Merge branch 'cleaner-posix2' into cleaner-posix3

387 files changed, 2508 insertions, 2564 deletions

diff --git a/src/core/channel/client_uchannel.c b/src/core/channel/client_uchannel.c
deleted file mode 100644
index d32327206e..0000000000
--- a/src/core/channel/client_uchannel.c
+++ /dev/null
@@ -1,233 +0,0 @@
-/*
- *
- * Copyright 2015-2016, Google Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-#include "src/core/channel/client_uchannel.h"
-
-#include <string.h>
-
-#include "src/core/census/grpc_filter.h"
-#include "src/core/channel/channel_args.h"
-#include "src/core/channel/client_channel.h"
-#include "src/core/channel/compress_filter.h"
-#include "src/core/channel/subchannel_call_holder.h"
-#include "src/core/iomgr/iomgr.h"
-#include "src/core/support/string.h"
-#include "src/core/surface/channel.h"
-#include "src/core/transport/connectivity_state.h"
-
-#include <grpc/support/alloc.h>
-#include <grpc/support/log.h>
-#include <grpc/support/sync.h>
-#include <grpc/support/useful.h>
-
-/** Microchannel (uchannel) implementation: a lightweight channel without any
- * load-balancing mechanisms meant for communication from within the core. */
-
-typedef struct client_uchannel_channel_data {
-  /** master channel - the grpc_channel instance that ultimately owns
-      this channel_data via its channel stack.
-      We occasionally use this to bump the refcount on the master channel
-      to keep ourselves alive through an asynchronous operation. */
-  grpc_channel_stack *owning_stack;
-
-  /** connectivity state being tracked */
-  grpc_connectivity_state_tracker state_tracker;
-
-  /** the subchannel wrapped by the microchannel */
-  grpc_connected_subchannel *connected_subchannel;
-
-  /** the callback used to stay subscribed to subchannel connectivity
-   * notifications */
-  grpc_closure connectivity_cb;
-
-  /** the current connectivity state of the wrapped subchannel */
-  grpc_connectivity_state subchannel_connectivity;
-
-  gpr_mu mu_state;
-} channel_data;
-
-typedef grpc_subchannel_call_holder call_data;
-
-static void monitor_subchannel(grpc_exec_ctx *exec_ctx, void *arg,
-                               bool iomgr_success) {
-  channel_data *chand = arg;
-  grpc_connectivity_state_set(exec_ctx, &chand->state_tracker,
-                              chand->subchannel_connectivity,
-                              "uchannel_monitor_subchannel");
-  grpc_connected_subchannel_notify_on_state_change(
-      exec_ctx, chand->connected_subchannel, NULL,
-      &chand->subchannel_connectivity, &chand->connectivity_cb);
-}
-
-static char *cuc_get_peer(grpc_exec_ctx *exec_ctx, grpc_call_element *elem) {
-  return grpc_subchannel_call_holder_get_peer(exec_ctx, elem->call_data);
-}
-
-static void cuc_start_transport_stream_op(grpc_exec_ctx *exec_ctx,
-                                          grpc_call_element *elem,
-                                          grpc_transport_stream_op *op) {
-  GRPC_CALL_LOG_OP(GPR_INFO, elem, op);
-  grpc_subchannel_call_holder_perform_op(exec_ctx, elem->call_data, op);
-}
-
-static void cuc_start_transport_op(grpc_exec_ctx *exec_ctx,
-                                   grpc_channel_element *elem,
-                                   grpc_transport_op *op) {
-  channel_data *chand = elem->channel_data;
-
-  grpc_exec_ctx_enqueue(exec_ctx, op->on_consumed, true, NULL);
-
-  GPR_ASSERT(op->set_accept_stream == false);
-  GPR_ASSERT(op->bind_pollset == NULL);
-
-  if (op->on_connectivity_state_change != NULL) {
-    grpc_connectivity_state_notify_on_state_change(
-        exec_ctx, &chand->state_tracker, op->connectivity_state,
-        op->on_connectivity_state_change);
-    op->on_connectivity_state_change = NULL;
-    op->connectivity_state = NULL;
-  }
-
-  if (op->disconnect) {
-    grpc_connectivity_state_set(exec_ctx, &chand->state_tracker,
-                                GRPC_CHANNEL_FATAL_FAILURE, "disconnect");
-  }
-}
-
-static int cuc_pick_subchannel(grpc_exec_ctx *exec_ctx, void *arg,
-                               grpc_metadata_batch *initial_metadata,
-                               grpc_connected_subchannel **connected_subchannel,
-                               grpc_closure *on_ready) {
-  channel_data *chand = arg;
-  GPR_ASSERT(initial_metadata != NULL);
-  *connected_subchannel = chand->connected_subchannel;
-  return 1;
-}
-
-/* Constructor for call_data */
-static void cuc_init_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
-                               grpc_call_element_args *args) {
-  grpc_subchannel_call_holder_init(elem->call_data, cuc_pick_subchannel,
-                                   elem->channel_data, args->call_stack);
-}
-
-/* Destructor for call_data */
-static void cuc_destroy_call_elem(grpc_exec_ctx *exec_ctx,
-                                  grpc_call_element *elem) {
-  grpc_subchannel_call_holder_destroy(exec_ctx, elem->call_data);
-}
-
-/* Constructor for channel_data */
-static void cuc_init_channel_elem(grpc_exec_ctx *exec_ctx,
-                                  grpc_channel_element *elem,
-                                  grpc_channel_element_args *args) {
-  channel_data *chand = elem->channel_data;
-  memset(chand, 0, sizeof(*chand));
-  grpc_closure_init(&chand->connectivity_cb, monitor_subchannel, chand);
-  GPR_ASSERT(args->is_last);
-  GPR_ASSERT(elem->filter == &grpc_client_uchannel_filter);
-  chand->owning_stack = args->channel_stack;
-  grpc_connectivity_state_init(&chand->state_tracker, GRPC_CHANNEL_IDLE,
-                               "client_uchannel");
-  gpr_mu_init(&chand->mu_state);
-}
-
-/* Destructor for channel_data */
-static void cuc_destroy_channel_elem(grpc_exec_ctx *exec_ctx,
-                                     grpc_channel_element *elem) {
-  channel_data *chand = elem->channel_data;
-  /* cancel subscription */
-  grpc_connected_subchannel_notify_on_state_change(
-      exec_ctx, chand->connected_subchannel, NULL, NULL,
-      &chand->connectivity_cb);
-  grpc_connectivity_state_destroy(exec_ctx, &chand->state_tracker);
-  gpr_mu_destroy(&chand->mu_state);
-  GRPC_CONNECTED_SUBCHANNEL_UNREF(exec_ctx, chand->connected_subchannel,
-                                  "uchannel");
-}
-
-static void cuc_set_pollset(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
-                            grpc_pollset *pollset) {
-  call_data *calld = elem->call_data;
-  calld->pollset = pollset;
-}
-
-const grpc_channel_filter grpc_client_uchannel_filter = {
-    cuc_start_transport_stream_op, cuc_start_transport_op, sizeof(call_data),
-    cuc_init_call_elem, cuc_set_pollset, cuc_destroy_call_elem,
-    sizeof(channel_data), cuc_init_channel_elem, cuc_destroy_channel_elem,
-    cuc_get_peer, "client-uchannel",
-};
-
-grpc_connectivity_state grpc_client_uchannel_check_connectivity_state(
-    grpc_exec_ctx *exec_ctx, grpc_channel_element *elem, int try_to_connect) {
-  channel_data *chand = elem->channel_data;
-  grpc_connectivity_state out;
-  gpr_mu_lock(&chand->mu_state);
-  out = grpc_connectivity_state_check(&chand->state_tracker);
-  gpr_mu_unlock(&chand->mu_state);
-  return out;
-}
-
-void grpc_client_uchannel_watch_connectivity_state(
-    grpc_exec_ctx *exec_ctx, grpc_channel_element *elem, grpc_pollset *pollset,
-    grpc_connectivity_state *state, grpc_closure *on_complete) {
-  channel_data *chand = elem->channel_data;
-  gpr_mu_lock(&chand->mu_state);
-  grpc_connectivity_state_notify_on_state_change(
-      exec_ctx, &chand->state_tracker, state, on_complete);
-  gpr_mu_unlock(&chand->mu_state);
-}
-
-grpc_channel *grpc_client_uchannel_create(grpc_subchannel *subchannel,
-                                          grpc_channel_args *args) {
-  grpc_channel *channel = NULL;
-  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-
-  channel =
-      grpc_channel_create(&exec_ctx, NULL, args, GRPC_CLIENT_UCHANNEL, NULL);
-
-  return channel;
-}
-
-void grpc_client_uchannel_set_connected_subchannel(
-    grpc_channel *uchannel, grpc_connected_subchannel *connected_subchannel) {
-  grpc_channel_element *elem =
-      grpc_channel_stack_last_element(grpc_channel_get_channel_stack(uchannel));
-  channel_data *chand = elem->channel_data;
-  GPR_ASSERT(elem->filter == &grpc_client_uchannel_filter);
-  gpr_mu_lock(&chand->mu_state);
-  chand->connected_subchannel = connected_subchannel;
-  GRPC_CONNECTED_SUBCHANNEL_REF(connected_subchannel, "uchannel");
-  gpr_mu_unlock(&chand->mu_state);
-}
diff --git a/src/core/httpcli/parser.c b/src/core/httpcli/parser.c
deleted file mode 100644
index c314f025a0..0000000000
--- a/src/core/httpcli/parser.c
+++ /dev/null
@@ -1,211 +0,0 @@
-/*
- *
- * Copyright 2015, Google Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-#include "src/core/httpcli/parser.h"
-
-#include <string.h>
-
-#include <grpc/support/alloc.h>
-#include <grpc/support/log.h>
-#include <grpc/support/useful.h>
-
-static int handle_response_line(grpc_httpcli_parser *parser) {
-  uint8_t *beg = parser->cur_line;
-  uint8_t *cur = beg;
-  uint8_t *end = beg + parser->cur_line_length;
-
-  if (cur == end || *cur++ != 'H') goto error;
-  if (cur == end || *cur++ != 'T') goto error;
-  if (cur == end || *cur++ != 'T') goto error;
-  if (cur == end || *cur++ != 'P') goto error;
-  if (cur == end || *cur++ != '/') goto error;
-  if (cur == end || *cur++ != '1') goto error;
-  if (cur == end || *cur++ != '.') goto error;
-  if (cur == end || *cur < '0' || *cur++ > '1') goto error;
-  if (cur == end || *cur++ != ' ') goto error;
-  if (cur == end || *cur < '1' || *cur++ > '9') goto error;
-  if (cur == end || *cur < '0' || *cur++ > '9') goto error;
-  if (cur == end || *cur < '0' || *cur++ > '9') goto error;
-  parser->r.status =
-      (cur[-3] - '0') * 100 + (cur[-2] - '0') * 10 + (cur[-1] - '0');
-  if (cur == end || *cur++ != ' ') goto error;
-
-  /* we don't really care about the status code message */
-
-  return 1;
-
-error:
-  gpr_log(GPR_ERROR, "Failed parsing response line");
-  return 0;
-}
-
-static char *buf2str(void *buffer, size_t length) {
-  char *out = gpr_malloc(length + 1);
-  memcpy(out, buffer, length);
-  out[length] = 0;
-  return out;
-}
-
-static int add_header(grpc_httpcli_parser *parser) {
-  uint8_t *beg = parser->cur_line;
-  uint8_t *cur = beg;
-  uint8_t *end = beg + parser->cur_line_length;
-  grpc_httpcli_header hdr = {NULL, NULL};
-
-  GPR_ASSERT(cur != end);
-
-  if (*cur == ' ' || *cur == '\t') {
-    gpr_log(GPR_ERROR, "Continued header lines not supported yet");
-    goto error;
-  }
-
-  while (cur != end && *cur != ':') {
-    cur++;
-  }
-  if (cur == end) {
-    gpr_log(GPR_ERROR, "Didn't find ':' in header string");
-    goto error;
-  }
-  GPR_ASSERT(cur >= beg);
-  hdr.key = buf2str(beg, (size_t)(cur - beg));
-  cur++; /* skip : */
-
-  while (cur != end && (*cur == ' ' || *cur == '\t')) {
-    cur++;
-  }
-  GPR_ASSERT(end - cur >= 2);
-  hdr.value = buf2str(cur, (size_t)(end - cur) - 2);
-
-  if (parser->r.hdr_count == parser->hdr_capacity) {
-    parser->hdr_capacity =
-        GPR_MAX(parser->hdr_capacity + 1, parser->hdr_capacity * 3 / 2);
-    parser->r.hdrs = gpr_realloc(
-        parser->r.hdrs, parser->hdr_capacity * sizeof(*parser->r.hdrs));
-  }
-  parser->r.hdrs[parser->r.hdr_count++] = hdr;
-  return 1;
-
-error:
-  gpr_free(hdr.key);
-  gpr_free(hdr.value);
-  return 0;
-}
-
-static int finish_line(grpc_httpcli_parser *parser) {
-  switch (parser->state) {
-    case GRPC_HTTPCLI_INITIAL_RESPONSE:
-      if (!handle_response_line(parser)) {
-        return 0;
-      }
-      parser->state = GRPC_HTTPCLI_HEADERS;
-      break;
-    case GRPC_HTTPCLI_HEADERS:
-      if (parser->cur_line_length == 2) {
-        parser->state = GRPC_HTTPCLI_BODY;
-        break;
-      }
-      if (!add_header(parser)) {
-        return 0;
-      }
-      break;
-    case GRPC_HTTPCLI_BODY:
-      GPR_UNREACHABLE_CODE(return 0);
-  }
-
-  parser->cur_line_length = 0;
-  return 1;
-}
-
-static int addbyte(grpc_httpcli_parser *parser, uint8_t byte) {
-  switch (parser->state) {
-    case GRPC_HTTPCLI_INITIAL_RESPONSE:
-    case GRPC_HTTPCLI_HEADERS:
-      if (parser->cur_line_length >= GRPC_HTTPCLI_MAX_HEADER_LENGTH) {
-        gpr_log(GPR_ERROR, "HTTP client max line length (%d) exceeded",
-                GRPC_HTTPCLI_MAX_HEADER_LENGTH);
-        return 0;
-      }
-      parser->cur_line[parser->cur_line_length] = byte;
-      parser->cur_line_length++;
-      if (parser->cur_line_length >= 2 &&
-          parser->cur_line[parser->cur_line_length - 2] == '\r' &&
-          parser->cur_line[parser->cur_line_length - 1] == '\n') {
-        return finish_line(parser);
-      } else {
-        return 1;
-      }
-      GPR_UNREACHABLE_CODE(return 0);
-    case GRPC_HTTPCLI_BODY:
-      if (parser->r.body_length == parser->body_capacity) {
-        parser->body_capacity = GPR_MAX(8, parser->body_capacity * 3 / 2);
-        parser->r.body =
-            gpr_realloc((void *)parser->r.body, parser->body_capacity);
-      }
-      parser->r.body[parser->r.body_length] = (char)byte;
-      parser->r.body_length++;
-      return 1;
-  }
-  GPR_UNREACHABLE_CODE(return 0);
-}
-
-void grpc_httpcli_parser_init(grpc_httpcli_parser *parser) {
-  memset(parser, 0, sizeof(*parser));
-  parser->state = GRPC_HTTPCLI_INITIAL_RESPONSE;
-  parser->r.status = 500;
-}
-
-void grpc_httpcli_parser_destroy(grpc_httpcli_parser *parser) {
-  size_t i;
-  gpr_free(parser->r.body);
-  for (i = 0; i < parser->r.hdr_count; i++) {
-    gpr_free(parser->r.hdrs[i].key);
-    gpr_free(parser->r.hdrs[i].value);
-  }
-  gpr_free(parser->r.hdrs);
-}
-
-int grpc_httpcli_parser_parse(grpc_httpcli_parser *parser, gpr_slice slice) {
-  size_t i;
-
-  for (i = 0; i < GPR_SLICE_LENGTH(slice); i++) {
-    if (!addbyte(parser, GPR_SLICE_START_PTR(slice)[i])) {
-      return 0;
-    }
-  }
-
-  return 1;
-}
-
-int grpc_httpcli_parser_eof(grpc_httpcli_parser *parser) {
-  return parser->state == GRPC_HTTPCLI_BODY;
-}
diff --git a/src/core/census/README.md b/src/core/lib/census/README.md
index fb615a2194..fb615a2194 100644
--- a/src/core/census/README.md
+++ b/src/core/lib/census/README.md
diff --git a/src/core/census/aggregation.h b/src/core/lib/census/aggregation.h
index e0ef9630c9..f353368b97 100644
--- a/src/core/census/aggregation.h
+++ b/src/core/lib/census/aggregation.h
@@ -33,8 +33,8 @@
 
 #include <stddef.h>
 
-#ifndef GRPC_CORE_CENSUS_AGGREGATION_H
-#define GRPC_CORE_CENSUS_AGGREGATION_H
+#ifndef GRPC_CORE_LIB_CENSUS_AGGREGATION_H
+#define GRPC_CORE_LIB_CENSUS_AGGREGATION_H
 
 /** Structure used to describe an aggregation type. */
 struct census_aggregation_ops {
@@ -63,4 +63,4 @@ struct census_aggregation_ops {
   size_t (*print)(const void *aggregation, char *buffer, size_t n);
 };
 
-#endif /* GRPC_CORE_CENSUS_AGGREGATION_H */
+#endif /* GRPC_CORE_LIB_CENSUS_AGGREGATION_H */
diff --git a/src/core/census/context.c b/src/core/lib/census/context.c
index 89b8ee0b39..5a118f46a9 100644
--- a/src/core/census/context.c
+++ b/src/core/lib/census/context.c
@@ -38,7 +38,7 @@
 #include <grpc/support/useful.h>
 #include <stdbool.h>
 #include <string.h>
-#include "src/core/support/string.h"
+#include "src/core/lib/support/string.h"
 
 // Functions in this file support the public context API, including
 // encoding/decoding as part of context propagation across RPC's. The overall
diff --git a/src/core/census/grpc_context.c b/src/core/lib/census/grpc_context.c
index 4b61382a2c..457c176355 100644
--- a/src/core/census/grpc_context.c
+++ b/src/core/lib/census/grpc_context.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -33,8 +33,8 @@
 
 #include <grpc/census.h>
 #include <grpc/grpc.h>
-#include "src/core/surface/api_trace.h"
-#include "src/core/surface/call.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/surface/call.h"
 
 void grpc_census_call_set_context(grpc_call *call, census_context *context) {
   GRPC_API_TRACE("grpc_census_call_set_context(call=%p, census_context=%p)", 2,
diff --git a/src/core/census/grpc_filter.c b/src/core/lib/census/grpc_filter.c
index c8aaf31e2d..d27d789aa1 100644
--- a/src/core/census/grpc_filter.c
+++ b/src/core/lib/census/grpc_filter.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/census/grpc_filter.h"
+#include "src/core/lib/census/grpc_filter.h"
 
 #include <stdio.h>
 #include <string.h>
@@ -42,10 +42,10 @@
 #include <grpc/support/slice.h>
 #include <grpc/support/time.h>
 
-#include "src/core/channel/channel_stack.h"
-#include "src/core/statistics/census_interface.h"
-#include "src/core/statistics/census_rpc_stats.h"
-#include "src/core/transport/static_metadata.h"
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/statistics/census_interface.h"
+#include "src/core/lib/statistics/census_rpc_stats.h"
+#include "src/core/lib/transport/static_metadata.h"
 
 typedef struct call_data {
   census_op_id op_id;
@@ -172,13 +172,27 @@ static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
 }
 
 const grpc_channel_filter grpc_client_census_filter = {
-    client_start_transport_op, grpc_channel_next_op, sizeof(call_data),
-    client_init_call_elem, grpc_call_stack_ignore_set_pollset,
-    client_destroy_call_elem, sizeof(channel_data), init_channel_elem,
-    destroy_channel_elem, grpc_call_next_get_peer, "census-client"};
+    client_start_transport_op,
+    grpc_channel_next_op,
+    sizeof(call_data),
+    client_init_call_elem,
+    grpc_call_stack_ignore_set_pollset,
+    client_destroy_call_elem,
+    sizeof(channel_data),
+    init_channel_elem,
+    destroy_channel_elem,
+    grpc_call_next_get_peer,
+    "census-client"};
 
 const grpc_channel_filter grpc_server_census_filter = {
-    server_start_transport_op, grpc_channel_next_op, sizeof(call_data),
-    server_init_call_elem, grpc_call_stack_ignore_set_pollset,
-    server_destroy_call_elem, sizeof(channel_data), init_channel_elem,
-    destroy_channel_elem, grpc_call_next_get_peer, "census-server"};
+    server_start_transport_op,
+    grpc_channel_next_op,
+    sizeof(call_data),
+    server_init_call_elem,
+    grpc_call_stack_ignore_set_pollset,
+    server_destroy_call_elem,
+    sizeof(channel_data),
+    init_channel_elem,
+    destroy_channel_elem,
+    grpc_call_next_get_peer,
+    "census-server"};
diff --git a/src/core/census/grpc_filter.h b/src/core/lib/census/grpc_filter.h
index 4699e4d692..7ceafe56e4 100644
--- a/src/core/census/grpc_filter.h
+++ b/src/core/lib/census/grpc_filter.h
@@ -31,14 +31,14 @@
  *
  */
 
-#ifndef GRPC_CORE_CENSUS_GRPC_FILTER_H
-#define GRPC_CORE_CENSUS_GRPC_FILTER_H
+#ifndef GRPC_CORE_LIB_CENSUS_GRPC_FILTER_H
+#define GRPC_CORE_LIB_CENSUS_GRPC_FILTER_H
 
-#include "src/core/channel/channel_stack.h"
+#include "src/core/lib/channel/channel_stack.h"
 
 /* Census filters: provides tracing and stats collection functionalities. It
    needs to reside right below the surface filter in the channel stack. */
 extern const grpc_channel_filter grpc_client_census_filter;
 extern const grpc_channel_filter grpc_server_census_filter;
 
-#endif /* GRPC_CORE_CENSUS_GRPC_FILTER_H */
+#endif /* GRPC_CORE_LIB_CENSUS_GRPC_FILTER_H */
diff --git a/src/core/census/grpc_plugin.c b/src/core/lib/census/grpc_plugin.c
index 3be2a48eb8..12aca76745 100644
--- a/src/core/census/grpc_plugin.c
+++ b/src/core/lib/census/grpc_plugin.c
@@ -31,15 +31,15 @@
  *
  */
 
-#include "src/core/census/grpc_plugin.h"
+#include "src/core/lib/census/grpc_plugin.h"
 
 #include <limits.h>
 
 #include <grpc/census.h>
 
-#include "src/core/census/grpc_filter.h"
-#include "src/core/surface/channel_init.h"
-#include "src/core/channel/channel_stack_builder.h"
+#include "src/core/lib/census/grpc_filter.h"
+#include "src/core/lib/channel/channel_stack_builder.h"
+#include "src/core/lib/surface/channel_init.h"
 
 static bool maybe_add_census_filter(grpc_channel_stack_builder *builder,
                                     void *arg_must_be_null) {
@@ -63,8 +63,6 @@ void census_grpc_plugin_init(void) {
   }
   grpc_channel_init_register_stage(GRPC_CLIENT_CHANNEL, INT_MAX,
                                    maybe_add_census_filter, NULL);
-  grpc_channel_init_register_stage(GRPC_CLIENT_UCHANNEL, INT_MAX,
-                                   maybe_add_census_filter, NULL);
   grpc_channel_init_register_stage(GRPC_SERVER_CHANNEL, INT_MAX,
                                    maybe_add_census_filter, NULL);
 }
diff --git a/src/core/census/grpc_plugin.h b/src/core/lib/census/grpc_plugin.h
index 9321c2c30f..33e5f0b701 100644
--- a/src/core/census/grpc_plugin.h
+++ b/src/core/lib/census/grpc_plugin.h
@@ -31,10 +31,10 @@
  *
  */
 
-#ifndef GRPC_CORE_CENSUS_GRPC_PLUGIN_H
-#define GRPC_CORE_CENSUS_GRPC_PLUGIN_H
+#ifndef GRPC_CORE_LIB_CENSUS_GRPC_PLUGIN_H
+#define GRPC_CORE_LIB_CENSUS_GRPC_PLUGIN_H
 
 void census_grpc_plugin_init(void);
 void census_grpc_plugin_destroy(void);
 
-#endif /* GRPC_CORE_CENSUS_GRPC_PLUGIN_H */
+#endif /* GRPC_CORE_LIB_CENSUS_GRPC_PLUGIN_H */
diff --git a/src/core/census/initialize.c b/src/core/lib/census/initialize.c
index ce7ec09b89..ce7ec09b89 100644
--- a/src/core/census/initialize.c
+++ b/src/core/lib/census/initialize.c
diff --git a/src/core/census/mlog.c b/src/core/lib/census/mlog.c
index a2cc46d3f2..9d47e80297 100644
--- a/src/core/census/mlog.c
+++ b/src/core/lib/census/mlog.c
@@ -88,7 +88,7 @@
 // include the name of the structure, which will be passed as the first
 // argument. E.g. cl_block_initialize() will initialize a cl_block.
 
-#include "src/core/census/mlog.h"
+#include "src/core/lib/census/mlog.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/atm.h>
 #include <grpc/support/cpu.h>
diff --git a/src/core/census/mlog.h b/src/core/lib/census/mlog.h
index bc6eaeaf28..7fbdeda986 100644
--- a/src/core/census/mlog.h
+++ b/src/core/lib/census/mlog.h
@@ -33,8 +33,8 @@
 
 /* A very fast in-memory log, optimized for multiple writers. */
 
-#ifndef GRPC_CORE_CENSUS_MLOG_H
-#define GRPC_CORE_CENSUS_MLOG_H
+#ifndef GRPC_CORE_LIB_CENSUS_MLOG_H
+#define GRPC_CORE_LIB_CENSUS_MLOG_H
 
 #include <grpc/support/port_platform.h>
 #include <stddef.h>
@@ -92,4 +92,4 @@ size_t census_log_remaining_space(void);
    out-of-space. */
 int64_t census_log_out_of_space_count(void);
 
-#endif /* GRPC_CORE_CENSUS_MLOG_H */
+#endif /* GRPC_CORE_LIB_CENSUS_MLOG_H */
diff --git a/src/core/census/operation.c b/src/core/lib/census/operation.c
index 5c58704372..315f9c3534 100644
--- a/src/core/census/operation.c
+++ b/src/core/lib/census/operation.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/core/census/placeholders.c b/src/core/lib/census/placeholders.c
index fe23d13971..fe23d13971 100644
--- a/src/core/census/placeholders.c
+++ b/src/core/lib/census/placeholders.c
diff --git a/src/core/census/rpc_metric_id.h b/src/core/lib/census/rpc_metric_id.h
index f8d8dad0bf..aad0588fb3 100644
--- a/src/core/census/rpc_metric_id.h
+++ b/src/core/lib/census/rpc_metric_id.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_CENSUS_RPC_METRIC_ID_H
-#define GRPC_CORE_CENSUS_RPC_METRIC_ID_H
+#ifndef GRPC_CORE_LIB_CENSUS_RPC_METRIC_ID_H
+#define GRPC_CORE_LIB_CENSUS_RPC_METRIC_ID_H
 
 /* Metric ID's used for RPC measurements. */
 /* Count of client requests sent. */
@@ -48,4 +48,4 @@
 /* Server side request latency. */
 #define CENSUS_METRIC_RPC_SERVER_LATENCY ((uint32_t)5)
 
-#endif /* GRPC_CORE_CENSUS_RPC_METRIC_ID_H */
+#endif /* GRPC_CORE_LIB_CENSUS_RPC_METRIC_ID_H */
diff --git a/src/core/census/tracing.c b/src/core/lib/census/tracing.c
index 3b5d6dab2b..e508996af3 100644
--- a/src/core/census/tracing.c
+++ b/src/core/lib/census/tracing.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/core/channel/channel_args.c b/src/core/lib/channel/channel_args.c
index bae7a90a01..1a02f1f4aa 100644
--- a/src/core/channel/channel_args.c
+++ b/src/core/lib/channel/channel_args.c
@@ -31,9 +31,9 @@
  *
  */
 
+#include "src/core/lib/channel/channel_args.h"
 #include <grpc/grpc.h>
-#include "src/core/channel/channel_args.h"
-#include "src/core/support/string.h"
+#include "src/core/lib/support/string.h"
 
 #include <grpc/census.h>
 #include <grpc/support/alloc.h>
diff --git a/src/core/channel/channel_args.h b/src/core/lib/channel/channel_args.h
index e19440f76f..67d287ec6b 100644
--- a/src/core/channel/channel_args.h
+++ b/src/core/lib/channel/channel_args.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_CHANNEL_CHANNEL_ARGS_H
-#define GRPC_CORE_CHANNEL_CHANNEL_ARGS_H
+#ifndef GRPC_CORE_LIB_CHANNEL_CHANNEL_ARGS_H
+#define GRPC_CORE_LIB_CHANNEL_CHANNEL_ARGS_H
 
 #include <grpc/compression.h>
 #include <grpc/grpc.h>
@@ -91,4 +91,4 @@ int grpc_channel_args_compression_algorithm_get_states(
 int grpc_channel_args_compare(const grpc_channel_args *a,
                               const grpc_channel_args *b);
 
-#endif /* GRPC_CORE_CHANNEL_CHANNEL_ARGS_H */
+#endif /* GRPC_CORE_LIB_CHANNEL_CHANNEL_ARGS_H */
diff --git a/src/core/channel/channel_stack.c b/src/core/lib/channel/channel_stack.c
index 3e61688364..52283e35fa 100644
--- a/src/core/channel/channel_stack.c
+++ b/src/core/lib/channel/channel_stack.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/channel/channel_stack.h"
+#include "src/core/lib/channel/channel_stack.h"
 #include <grpc/support/log.h>
 
 #include <stdlib.h>
diff --git a/src/core/channel/channel_stack.h b/src/core/lib/channel/channel_stack.h
index 52362f0b20..b29bee411d 100644
--- a/src/core/channel/channel_stack.h
+++ b/src/core/lib/channel/channel_stack.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_CHANNEL_CHANNEL_STACK_H
-#define GRPC_CORE_CHANNEL_CHANNEL_STACK_H
+#ifndef GRPC_CORE_LIB_CHANNEL_CHANNEL_STACK_H
+#define GRPC_CORE_LIB_CHANNEL_CHANNEL_STACK_H
 
 /* A channel filter defines how operations on a channel are implemented.
    Channel filters are chained together to create full channels, and if those
@@ -45,8 +45,8 @@
 
 #include <grpc/grpc.h>
 #include <grpc/support/log.h>
-#include "src/core/debug/trace.h"
-#include "src/core/transport/transport.h"
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/transport/transport.h"
 
 typedef struct grpc_channel_element grpc_channel_element;
 typedef struct grpc_call_element grpc_call_element;
@@ -257,4 +257,4 @@ extern int grpc_trace_channel;
 #define GRPC_CALL_LOG_OP(sev, elem, op) \
   if (grpc_trace_channel) grpc_call_log_op(sev, elem, op)
 
-#endif /* GRPC_CORE_CHANNEL_CHANNEL_STACK_H */
+#endif /* GRPC_CORE_LIB_CHANNEL_CHANNEL_STACK_H */
diff --git a/src/core/channel/channel_stack_builder.c b/src/core/lib/channel/channel_stack_builder.c
index 80e2e393f9..1ce0c4e07f 100644
--- a/src/core/channel/channel_stack_builder.c
+++ b/src/core/lib/channel/channel_stack_builder.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/channel/channel_stack_builder.h"
+#include "src/core/lib/channel/channel_stack_builder.h"
 
 #include <string.h>
 
@@ -216,7 +216,6 @@ void *grpc_channel_stack_builder_finish(grpc_exec_ctx *exec_ctx,
   // count the number of filters
   size_t num_filters = 0;
   for (filter_node *p = builder->begin.next; p != &builder->end; p = p->next) {
-    gpr_log(GPR_DEBUG, "%d: %s", num_filters, p->filter->name);
     num_filters++;
   }
 
diff --git a/src/core/channel/channel_stack_builder.h b/src/core/lib/channel/channel_stack_builder.h
index 15f395e8b8..8532c4462a 100644
--- a/src/core/channel/channel_stack_builder.h
+++ b/src/core/lib/channel/channel_stack_builder.h
@@ -31,13 +31,13 @@
  *
  */
 
-#ifndef GRPC_CORE_CHANNEL_CHANNEL_STACK_BUILDER_H
-#define GRPC_CORE_CHANNEL_CHANNEL_STACK_BUILDER_H
+#ifndef GRPC_CORE_LIB_CHANNEL_CHANNEL_STACK_BUILDER_H
+#define GRPC_CORE_LIB_CHANNEL_CHANNEL_STACK_BUILDER_H
 
 #include <stdbool.h>
 
-#include "src/core/channel/channel_args.h"
-#include "src/core/channel/channel_stack.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/channel_stack.h"
 
 /// grpc_channel_stack_builder offers a programmatic interface to selected
 /// and order channel filters
@@ -152,4 +152,4 @@ void grpc_channel_stack_builder_destroy(grpc_channel_stack_builder *builder);
 
 extern int grpc_trace_channel_stack_builder;
 
-#endif /* GRPC_CORE_CHANNEL_CHANNEL_STACK_BUILDER_H */
+#endif /* GRPC_CORE_LIB_CHANNEL_CHANNEL_STACK_BUILDER_H */
diff --git a/src/core/channel/client_channel.c b/src/core/lib/channel/client_channel.c
index f021a8ae32..9fdf803ecf 100644
--- a/src/core/channel/client_channel.c
+++ b/src/core/lib/channel/client_channel.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/channel/client_channel.h"
+#include "src/core/lib/channel/client_channel.h"
 
 #include <stdio.h>
 #include <string.h>
@@ -41,14 +41,14 @@
 #include <grpc/support/sync.h>
 #include <grpc/support/useful.h>
 
-#include "src/core/channel/channel_args.h"
-#include "src/core/channel/connected_channel.h"
-#include "src/core/channel/subchannel_call_holder.h"
-#include "src/core/iomgr/iomgr.h"
-#include "src/core/profiling/timers.h"
-#include "src/core/support/string.h"
-#include "src/core/surface/channel.h"
-#include "src/core/transport/connectivity_state.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/connected_channel.h"
+#include "src/core/lib/channel/subchannel_call_holder.h"
+#include "src/core/lib/iomgr/iomgr.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/support/string.h"
+#include "src/core/lib/surface/channel.h"
+#include "src/core/lib/transport/connectivity_state.h"
 
 /* Client channel implementation */
 
@@ -431,9 +431,17 @@ static void cc_set_pollset(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
 }
 
 const grpc_channel_filter grpc_client_channel_filter = {
-    cc_start_transport_stream_op, cc_start_transport_op, sizeof(call_data),
-    init_call_elem, cc_set_pollset, destroy_call_elem, sizeof(channel_data),
-    init_channel_elem, destroy_channel_elem, cc_get_peer, "client-channel",
+    cc_start_transport_stream_op,
+    cc_start_transport_op,
+    sizeof(call_data),
+    init_call_elem,
+    cc_set_pollset,
+    destroy_call_elem,
+    sizeof(channel_data),
+    init_channel_elem,
+    destroy_channel_elem,
+    cc_get_peer,
+    "client-channel",
 };
 
 void grpc_client_channel_set_resolver(grpc_exec_ctx *exec_ctx,
diff --git a/src/core/channel/client_channel.h b/src/core/lib/channel/client_channel.h
index 422f7f8374..8777796fb6 100644
--- a/src/core/channel/client_channel.h
+++ b/src/core/lib/channel/client_channel.h
@@ -31,11 +31,11 @@
  *
  */
 
-#ifndef GRPC_CORE_CHANNEL_CLIENT_CHANNEL_H
-#define GRPC_CORE_CHANNEL_CLIENT_CHANNEL_H
+#ifndef GRPC_CORE_LIB_CHANNEL_CLIENT_CHANNEL_H
+#define GRPC_CORE_LIB_CHANNEL_CLIENT_CHANNEL_H
 
-#include "src/core/channel/channel_stack.h"
-#include "src/core/client_config/resolver.h"
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/client_config/resolver.h"
 
 /* A client channel is a channel that begins disconnected, and can connect
    to some endpoint on demand. If that endpoint disconnects, it will be
@@ -60,4 +60,4 @@ void grpc_client_channel_watch_connectivity_state(
     grpc_exec_ctx *exec_ctx, grpc_channel_element *elem, grpc_pollset *pollset,
     grpc_connectivity_state *state, grpc_closure *on_complete);
 
-#endif /* GRPC_CORE_CHANNEL_CLIENT_CHANNEL_H */
+#endif /* GRPC_CORE_LIB_CHANNEL_CLIENT_CHANNEL_H */
diff --git a/src/core/channel/compress_filter.c b/src/core/lib/channel/compress_filter.c
index 3e7ca08fd2..04bb7cc76f 100644
--- a/src/core/channel/compress_filter.c
+++ b/src/core/lib/channel/compress_filter.c
@@ -39,13 +39,13 @@
 #include <grpc/support/log.h>
 #include <grpc/support/slice_buffer.h>
 
-#include "src/core/channel/channel_args.h"
-#include "src/core/channel/compress_filter.h"
-#include "src/core/compression/algorithm_metadata.h"
-#include "src/core/compression/message_compress.h"
-#include "src/core/profiling/timers.h"
-#include "src/core/support/string.h"
-#include "src/core/transport/static_metadata.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/compress_filter.h"
+#include "src/core/lib/compression/algorithm_metadata.h"
+#include "src/core/lib/compression/message_compress.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/support/string.h"
+#include "src/core/lib/transport/static_metadata.h"
 
 typedef struct call_data {
   gpr_slice_buffer slices; /**< Buffers up input slices to be compressed */
@@ -291,7 +291,14 @@ static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
                                  grpc_channel_element *elem) {}
 
 const grpc_channel_filter grpc_compress_filter = {
-    compress_start_transport_stream_op, grpc_channel_next_op, sizeof(call_data),
-    init_call_elem, grpc_call_stack_ignore_set_pollset, destroy_call_elem,
-    sizeof(channel_data), init_channel_elem, destroy_channel_elem,
-    grpc_call_next_get_peer, "compress"};
+    compress_start_transport_stream_op,
+    grpc_channel_next_op,
+    sizeof(call_data),
+    init_call_elem,
+    grpc_call_stack_ignore_set_pollset,
+    destroy_call_elem,
+    sizeof(channel_data),
+    init_channel_elem,
+    destroy_channel_elem,
+    grpc_call_next_get_peer,
+    "compress"};
diff --git a/src/core/channel/compress_filter.h b/src/core/lib/channel/compress_filter.h
index 8c208ac799..9010074335 100644
--- a/src/core/channel/compress_filter.h
+++ b/src/core/lib/channel/compress_filter.h
@@ -31,10 +31,10 @@
  *
  */
 
-#ifndef GRPC_CORE_CHANNEL_COMPRESS_FILTER_H
-#define GRPC_CORE_CHANNEL_COMPRESS_FILTER_H
+#ifndef GRPC_CORE_LIB_CHANNEL_COMPRESS_FILTER_H
+#define GRPC_CORE_LIB_CHANNEL_COMPRESS_FILTER_H
 
-#include "src/core/channel/channel_stack.h"
+#include "src/core/lib/channel/channel_stack.h"
 
 #define GRPC_COMPRESS_REQUEST_ALGORITHM_KEY "grpc-internal-encoding-request"
 
@@ -62,4 +62,4 @@
 
 extern const grpc_channel_filter grpc_compress_filter;
 
-#endif /* GRPC_CORE_CHANNEL_COMPRESS_FILTER_H */
+#endif /* GRPC_CORE_LIB_CHANNEL_COMPRESS_FILTER_H */
diff --git a/src/core/channel/connected_channel.c b/src/core/lib/channel/connected_channel.c
index e7ed3ccfeb..5e3a8974ce 100644
--- a/src/core/channel/connected_channel.c
+++ b/src/core/lib/channel/connected_channel.c
@@ -31,19 +31,19 @@
  *
  */
 
-#include "src/core/channel/connected_channel.h"
+#include "src/core/lib/channel/connected_channel.h"
 
 #include <stdarg.h>
 #include <stdio.h>
 #include <string.h>
 
-#include "src/core/support/string.h"
-#include "src/core/transport/transport.h"
-#include "src/core/profiling/timers.h"
 #include <grpc/byte_buffer.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/slice_buffer.h>
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/support/string.h"
+#include "src/core/lib/transport/transport.h"
 
 #define MAX_BUFFER_LENGTH 8192
 
@@ -132,9 +132,17 @@ static char *con_get_peer(grpc_exec_ctx *exec_ctx, grpc_call_element *elem) {
 }
 
 static const grpc_channel_filter connected_channel_filter = {
-    con_start_transport_stream_op, con_start_transport_op, sizeof(call_data),
-    init_call_elem, set_pollset, destroy_call_elem, sizeof(channel_data),
-    init_channel_elem, destroy_channel_elem, con_get_peer, "connected",
+    con_start_transport_stream_op,
+    con_start_transport_op,
+    sizeof(call_data),
+    init_call_elem,
+    set_pollset,
+    destroy_call_elem,
+    sizeof(channel_data),
+    init_channel_elem,
+    destroy_channel_elem,
+    con_get_peer,
+    "connected",
 };
 
 static void bind_transport(grpc_channel_stack *channel_stack,
diff --git a/src/core/channel/connected_channel.h b/src/core/lib/channel/connected_channel.h
index 7c0c8359a4..4f20b751cc 100644
--- a/src/core/channel/connected_channel.h
+++ b/src/core/lib/channel/connected_channel.h
@@ -31,12 +31,12 @@
  *
  */
 
-#ifndef GRPC_CORE_CHANNEL_CONNECTED_CHANNEL_H
-#define GRPC_CORE_CHANNEL_CONNECTED_CHANNEL_H
+#ifndef GRPC_CORE_LIB_CHANNEL_CONNECTED_CHANNEL_H
+#define GRPC_CORE_LIB_CHANNEL_CONNECTED_CHANNEL_H
 
-#include "src/core/channel/channel_stack_builder.h"
+#include "src/core/lib/channel/channel_stack_builder.h"
 
 bool grpc_add_connected_filter(grpc_channel_stack_builder *builder,
                                void *arg_must_be_null);
 
-#endif /* GRPC_CORE_CHANNEL_CONNECTED_CHANNEL_H */
+#endif /* GRPC_CORE_LIB_CHANNEL_CONNECTED_CHANNEL_H */
diff --git a/src/core/channel/context.h b/src/core/lib/channel/context.h
index db217dc133..bca102da9a 100644
--- a/src/core/channel/context.h
+++ b/src/core/lib/channel/context.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_CHANNEL_CONTEXT_H
-#define GRPC_CORE_CHANNEL_CONTEXT_H
+#ifndef GRPC_CORE_LIB_CHANNEL_CONTEXT_H
+#define GRPC_CORE_LIB_CHANNEL_CONTEXT_H
 
 /* Call object context pointers */
 typedef enum {
@@ -46,4 +46,4 @@ typedef struct {
   void (*destroy)(void *);
 } grpc_call_context_element;
 
-#endif /* GRPC_CORE_CHANNEL_CONTEXT_H */
+#endif /* GRPC_CORE_LIB_CHANNEL_CONTEXT_H */
diff --git a/src/core/channel/http_client_filter.c b/src/core/lib/channel/http_client_filter.c
index 1aa27208c2..7dbac38414 100644
--- a/src/core/channel/http_client_filter.c
+++ b/src/core/lib/channel/http_client_filter.c
@@ -30,14 +30,14 @@
  *
  */
 
-#include "src/core/channel/http_client_filter.h"
+#include "src/core/lib/channel/http_client_filter.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 #include <string.h>
-#include "src/core/profiling/timers.h"
-#include "src/core/support/string.h"
-#include "src/core/transport/static_metadata.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/support/string.h"
+#include "src/core/lib/transport/static_metadata.h"
 
 typedef struct call_data {
   grpc_linked_mdelem method;
@@ -242,7 +242,14 @@ static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
 }
 
 const grpc_channel_filter grpc_http_client_filter = {
-    hc_start_transport_op, grpc_channel_next_op, sizeof(call_data),
-    init_call_elem, grpc_call_stack_ignore_set_pollset, destroy_call_elem,
-    sizeof(channel_data), init_channel_elem, destroy_channel_elem,
-    grpc_call_next_get_peer, "http-client"};
+    hc_start_transport_op,
+    grpc_channel_next_op,
+    sizeof(call_data),
+    init_call_elem,
+    grpc_call_stack_ignore_set_pollset,
+    destroy_call_elem,
+    sizeof(channel_data),
+    init_channel_elem,
+    destroy_channel_elem,
+    grpc_call_next_get_peer,
+    "http-client"};
diff --git a/src/core/channel/http_client_filter.h b/src/core/lib/channel/http_client_filter.h
index 6f619bbf00..418426e9cc 100644
--- a/src/core/channel/http_client_filter.h
+++ b/src/core/lib/channel/http_client_filter.h
@@ -31,14 +31,14 @@
  *
  */
 
-#ifndef GRPC_CORE_CHANNEL_HTTP_CLIENT_FILTER_H
-#define GRPC_CORE_CHANNEL_HTTP_CLIENT_FILTER_H
+#ifndef GRPC_CORE_LIB_CHANNEL_HTTP_CLIENT_FILTER_H
+#define GRPC_CORE_LIB_CHANNEL_HTTP_CLIENT_FILTER_H
 
-#include "src/core/channel/channel_stack.h"
+#include "src/core/lib/channel/channel_stack.h"
 
 /* Processes metadata on the client side for HTTP2 transports */
 extern const grpc_channel_filter grpc_http_client_filter;
 
 #define GRPC_ARG_HTTP2_SCHEME "grpc.http2_scheme"
 
-#endif /* GRPC_CORE_CHANNEL_HTTP_CLIENT_FILTER_H */
+#endif /* GRPC_CORE_LIB_CHANNEL_HTTP_CLIENT_FILTER_H */
diff --git a/src/core/channel/http_server_filter.c b/src/core/lib/channel/http_server_filter.c
index 370f8dbe42..df99b77ab3 100644
--- a/src/core/channel/http_server_filter.c
+++ b/src/core/lib/channel/http_server_filter.c
@@ -31,13 +31,13 @@
  *
  */
 
-#include "src/core/channel/http_server_filter.h"
+#include "src/core/lib/channel/http_server_filter.h"
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <string.h>
-#include "src/core/profiling/timers.h"
-#include "src/core/transport/static_metadata.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/transport/static_metadata.h"
 
 typedef struct call_data {
   uint8_t seen_path;
@@ -227,7 +227,14 @@ static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
                                  grpc_channel_element *elem) {}
 
 const grpc_channel_filter grpc_http_server_filter = {
-    hs_start_transport_op, grpc_channel_next_op, sizeof(call_data),
-    init_call_elem, grpc_call_stack_ignore_set_pollset, destroy_call_elem,
-    sizeof(channel_data), init_channel_elem, destroy_channel_elem,
-    grpc_call_next_get_peer, "http-server"};
+    hs_start_transport_op,
+    grpc_channel_next_op,
+    sizeof(call_data),
+    init_call_elem,
+    grpc_call_stack_ignore_set_pollset,
+    destroy_call_elem,
+    sizeof(channel_data),
+    init_channel_elem,
+    destroy_channel_elem,
+    grpc_call_next_get_peer,
+    "http-server"};
diff --git a/src/core/channel/http_server_filter.h b/src/core/lib/channel/http_server_filter.h
index 528c8648fd..c8cf920ded 100644
--- a/src/core/channel/http_server_filter.h
+++ b/src/core/lib/channel/http_server_filter.h
@@ -31,12 +31,12 @@
  *
  */
 
-#ifndef GRPC_CORE_CHANNEL_HTTP_SERVER_FILTER_H
-#define GRPC_CORE_CHANNEL_HTTP_SERVER_FILTER_H
+#ifndef GRPC_CORE_LIB_CHANNEL_HTTP_SERVER_FILTER_H
+#define GRPC_CORE_LIB_CHANNEL_HTTP_SERVER_FILTER_H
 
-#include "src/core/channel/channel_stack.h"
+#include "src/core/lib/channel/channel_stack.h"
 
 /* Processes metadata on the client side for HTTP2 transports */
 extern const grpc_channel_filter grpc_http_server_filter;
 
-#endif /* GRPC_CORE_CHANNEL_HTTP_SERVER_FILTER_H */
+#endif /* GRPC_CORE_LIB_CHANNEL_HTTP_SERVER_FILTER_H */
diff --git a/src/core/channel/subchannel_call_holder.c b/src/core/lib/channel/subchannel_call_holder.c
index 9c087dc2a1..6c6d42dd73 100644
--- a/src/core/channel/subchannel_call_holder.c
+++ b/src/core/lib/channel/subchannel_call_holder.c
@@ -31,11 +31,11 @@
  *
  */
 
-#include "src/core/channel/subchannel_call_holder.h"
+#include "src/core/lib/channel/subchannel_call_holder.h"
 
 #include <grpc/support/alloc.h>
 
-#include "src/core/profiling/timers.h"
+#include "src/core/lib/profiling/timers.h"
 
 #define GET_CALL(holder) \
   ((grpc_subchannel_call *)(gpr_atm_acq_load(&(holder)->subchannel_call)))
diff --git a/src/core/channel/subchannel_call_holder.h b/src/core/lib/channel/subchannel_call_holder.h
index 9086cdc882..882f366792 100644
--- a/src/core/channel/subchannel_call_holder.h
+++ b/src/core/lib/channel/subchannel_call_holder.h
@@ -31,10 +31,10 @@
  *
  */
 
-#ifndef GRPC_CORE_CHANNEL_SUBCHANNEL_CALL_HOLDER_H
-#define GRPC_CORE_CHANNEL_SUBCHANNEL_CALL_HOLDER_H
+#ifndef GRPC_CORE_LIB_CHANNEL_SUBCHANNEL_CALL_HOLDER_H
+#define GRPC_CORE_LIB_CHANNEL_SUBCHANNEL_CALL_HOLDER_H
 
-#include "src/core/client_config/subchannel.h"
+#include "src/core/lib/client_config/subchannel.h"
 
 /** Pick a subchannel for grpc_subchannel_call_holder;
     Return 1 if subchannel is available immediately (in which case on_ready
@@ -55,15 +55,14 @@ typedef enum {
     for initial metadata before trying to create a call object,
     and handling cancellation gracefully.
 
-    Both the channel and uchannel filter use this as their call_data. */
+    The channel filter uses this as their call_data. */
 typedef struct grpc_subchannel_call_holder {
   /** either 0 for no call, 1 for cancelled, or a pointer to a
       grpc_subchannel_call */
   gpr_atm subchannel_call;
   /** Helper function to choose the subchannel on which to create
       the call object. Channel filter delegates to the load
-      balancing policy (once it's ready); uchannel returns
-      immediately */
+      balancing policy (once it's ready). */
   grpc_subchannel_call_holder_pick_subchannel pick_subchannel;
   void *pick_subchannel_arg;
 
@@ -95,4 +94,4 @@ void grpc_subchannel_call_holder_perform_op(grpc_exec_ctx *exec_ctx,
 char *grpc_subchannel_call_holder_get_peer(grpc_exec_ctx *exec_ctx,
                                            grpc_subchannel_call_holder *holder);
 
-#endif /* GRPC_CORE_CHANNEL_SUBCHANNEL_CALL_HOLDER_H */
+#endif /* GRPC_CORE_LIB_CHANNEL_SUBCHANNEL_CALL_HOLDER_H */
diff --git a/src/core/client_config/README.md b/src/core/lib/client_config/README.md
index fff7a5af5b..fff7a5af5b 100644
--- a/src/core/client_config/README.md
+++ b/src/core/lib/client_config/README.md
diff --git a/src/core/client_config/client_config.c b/src/core/lib/client_config/client_config.c
index c500af25ee..82c8d68099 100644
--- a/src/core/client_config/client_config.c
+++ b/src/core/lib/client_config/client_config.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/client_config/client_config.h"
+#include "src/core/lib/client_config/client_config.h"
 
 #include <string.h>
 
diff --git a/src/core/client_config/client_config.h b/src/core/lib/client_config/client_config.h
index 9b37fdc211..404ec0d3a5 100644
--- a/src/core/client_config/client_config.h
+++ b/src/core/lib/client_config/client_config.h
@@ -31,10 +31,10 @@
  *
  */
 
-#ifndef GRPC_CORE_CLIENT_CONFIG_CLIENT_CONFIG_H
-#define GRPC_CORE_CLIENT_CONFIG_CLIENT_CONFIG_H
+#ifndef GRPC_CORE_LIB_CLIENT_CONFIG_CLIENT_CONFIG_H
+#define GRPC_CORE_LIB_CLIENT_CONFIG_CLIENT_CONFIG_H
 
-#include "src/core/client_config/lb_policy.h"
+#include "src/core/lib/client_config/lb_policy.h"
 
 /** Total configuration for a client. Provided, and updated, by
     grpc_resolver */
@@ -50,4 +50,4 @@ void grpc_client_config_set_lb_policy(grpc_client_config *client_config,
 grpc_lb_policy *grpc_client_config_get_lb_policy(
     grpc_client_config *client_config);
 
-#endif /* GRPC_CORE_CLIENT_CONFIG_CLIENT_CONFIG_H */
+#endif /* GRPC_CORE_LIB_CLIENT_CONFIG_CLIENT_CONFIG_H */
diff --git a/src/core/client_config/connector.c b/src/core/lib/client_config/connector.c
index aa34aa7fab..f51d862c6d 100644
--- a/src/core/client_config/connector.c
+++ b/src/core/lib/client_config/connector.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/client_config/connector.h"
+#include "src/core/lib/client_config/connector.h"
 
 grpc_connector* grpc_connector_ref(grpc_connector* connector) {
   connector->vtable->ref(connector);
diff --git a/src/core/client_config/connector.h b/src/core/lib/client_config/connector.h
index 93248fca4b..21b925aade 100644
--- a/src/core/client_config/connector.h
+++ b/src/core/lib/client_config/connector.h
@@ -31,12 +31,12 @@
  *
  */
 
-#ifndef GRPC_CORE_CLIENT_CONFIG_CONNECTOR_H
-#define GRPC_CORE_CLIENT_CONFIG_CONNECTOR_H
+#ifndef GRPC_CORE_LIB_CLIENT_CONFIG_CONNECTOR_H
+#define GRPC_CORE_LIB_CLIENT_CONFIG_CONNECTOR_H
 
-#include "src/core/channel/channel_stack.h"
-#include "src/core/iomgr/sockaddr.h"
-#include "src/core/transport/transport.h"
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/iomgr/sockaddr.h"
+#include "src/core/lib/transport/transport.h"
 
 typedef struct grpc_connector grpc_connector;
 typedef struct grpc_connector_vtable grpc_connector_vtable;
@@ -89,4 +89,4 @@ void grpc_connector_connect(grpc_exec_ctx *exec_ctx, grpc_connector *connector,
 void grpc_connector_shutdown(grpc_exec_ctx *exec_ctx,
                              grpc_connector *connector);
 
-#endif /* GRPC_CORE_CLIENT_CONFIG_CONNECTOR_H */
+#endif /* GRPC_CORE_LIB_CLIENT_CONFIG_CONNECTOR_H */
diff --git a/src/core/client_config/default_initial_connect_string.c b/src/core/lib/client_config/default_initial_connect_string.c
index 6a4e23e6f2..86eb37de77 100644
--- a/src/core/client_config/default_initial_connect_string.c
+++ b/src/core/lib/client_config/default_initial_connect_string.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -32,7 +32,7 @@
  */
 
 #include <grpc/support/slice.h>
-#include "src/core/iomgr/sockaddr.h"
+#include "src/core/lib/iomgr/sockaddr.h"
 
 void grpc_set_default_initial_connect_string(struct sockaddr **addr,
                                              size_t *addr_len,
diff --git a/src/core/client_config/initial_connect_string.c b/src/core/lib/client_config/initial_connect_string.c
index 19afa1675a..95ae728316 100644
--- a/src/core/client_config/initial_connect_string.c
+++ b/src/core/lib/client_config/initial_connect_string.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/client_config/initial_connect_string.h"
+#include "src/core/lib/client_config/initial_connect_string.h"
 
 #include <stddef.h>
 
diff --git a/src/core/client_config/initial_connect_string.h b/src/core/lib/client_config/initial_connect_string.h
index e6d2d8f8fe..eec42fa240 100644
--- a/src/core/client_config/initial_connect_string.h
+++ b/src/core/lib/client_config/initial_connect_string.h
@@ -31,11 +31,11 @@
  *
  */
 
-#ifndef GRPC_CORE_CLIENT_CONFIG_INITIAL_CONNECT_STRING_H
-#define GRPC_CORE_CLIENT_CONFIG_INITIAL_CONNECT_STRING_H
+#ifndef GRPC_CORE_LIB_CLIENT_CONFIG_INITIAL_CONNECT_STRING_H
+#define GRPC_CORE_LIB_CLIENT_CONFIG_INITIAL_CONNECT_STRING_H
 
 #include <grpc/support/slice.h>
-#include "src/core/iomgr/sockaddr.h"
+#include "src/core/lib/iomgr/sockaddr.h"
 
 typedef void (*grpc_set_initial_connect_string_func)(struct sockaddr **addr,
                                                      size_t *addr_len,
@@ -47,4 +47,4 @@ void grpc_test_set_initial_connect_string_function(
 void grpc_set_initial_connect_string(struct sockaddr **addr, size_t *addr_len,
                                      gpr_slice *connect_string);
 
-#endif /* GRPC_CORE_CLIENT_CONFIG_INITIAL_CONNECT_STRING_H */
+#endif /* GRPC_CORE_LIB_CLIENT_CONFIG_INITIAL_CONNECT_STRING_H */
diff --git a/src/core/client_config/lb_policies/load_balancer_api.c b/src/core/lib/client_config/lb_policies/load_balancer_api.c
index a6b5785fe4..4cbed200df 100644
--- a/src/core/client_config/lb_policies/load_balancer_api.c
+++ b/src/core/lib/client_config/lb_policies/load_balancer_api.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/client_config/lb_policies/load_balancer_api.h"
+#include "src/core/lib/client_config/lb_policies/load_balancer_api.h"
 #include "third_party/nanopb/pb_decode.h"
 #include "third_party/nanopb/pb_encode.h"
 
diff --git a/src/core/client_config/lb_policies/load_balancer_api.h b/src/core/lib/client_config/lb_policies/load_balancer_api.h
index b7a4c9c8f5..83299adfa9 100644
--- a/src/core/client_config/lb_policies/load_balancer_api.h
+++ b/src/core/lib/client_config/lb_policies/load_balancer_api.h
@@ -31,13 +31,13 @@
  *
  */
 
-#ifndef GRPC_CORE_CLIENT_CONFIG_LB_POLICIES_LOAD_BALANCER_API_H
-#define GRPC_CORE_CLIENT_CONFIG_LB_POLICIES_LOAD_BALANCER_API_H
+#ifndef GRPC_CORE_LIB_CLIENT_CONFIG_LB_POLICIES_LOAD_BALANCER_API_H
+#define GRPC_CORE_LIB_CLIENT_CONFIG_LB_POLICIES_LOAD_BALANCER_API_H
 
 #include <grpc/support/slice_buffer.h>
 
-#include "src/core/client_config/lb_policy_factory.h"
-#include "src/core/proto/grpc/lb/v0/load_balancer.pb.h"
+#include "src/core/lib/client_config/lb_policy_factory.h"
+#include "src/core/lib/proto/grpc/lb/v0/load_balancer.pb.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -82,4 +82,4 @@ void grpc_grpclb_response_destroy(grpc_grpclb_response *response);
 }
 #endif
 
-#endif /* GRPC_CORE_CLIENT_CONFIG_LB_POLICIES_LOAD_BALANCER_API_H */
+#endif /* GRPC_CORE_LIB_CLIENT_CONFIG_LB_POLICIES_LOAD_BALANCER_API_H */
diff --git a/src/core/client_config/lb_policies/pick_first.c b/src/core/lib/client_config/lb_policies/pick_first.c
index 8ed1223d39..2e399b73f9 100644
--- a/src/core/client_config/lb_policies/pick_first.c
+++ b/src/core/lib/client_config/lb_policies/pick_first.c
@@ -31,13 +31,13 @@
  *
  */
 
-#include "src/core/client_config/lb_policies/pick_first.h"
-#include "src/core/client_config/lb_policy_factory.h"
+#include "src/core/lib/client_config/lb_policies/pick_first.h"
+#include "src/core/lib/client_config/lb_policy_factory.h"
 
 #include <string.h>
 
 #include <grpc/support/alloc.h>
-#include "src/core/transport/connectivity_state.h"
+#include "src/core/lib/transport/connectivity_state.h"
 
 typedef struct pending_pick {
   struct pending_pick *next;
@@ -378,8 +378,14 @@ void pf_ping_one(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
 }
 
 static const grpc_lb_policy_vtable pick_first_lb_policy_vtable = {
-    pf_destroy, pf_shutdown, pf_pick, pf_cancel_pick, pf_ping_one, pf_exit_idle,
-    pf_check_connectivity, pf_notify_on_state_change};
+    pf_destroy,
+    pf_shutdown,
+    pf_pick,
+    pf_cancel_pick,
+    pf_ping_one,
+    pf_exit_idle,
+    pf_check_connectivity,
+    pf_notify_on_state_change};
 
 static void pick_first_factory_ref(grpc_lb_policy_factory *factory) {}
 
diff --git a/src/core/client_config/lb_policies/pick_first.h b/src/core/lib/client_config/lb_policies/pick_first.h
index 3a3f195df5..dba86ea7ad 100644
--- a/src/core/client_config/lb_policies/pick_first.h
+++ b/src/core/lib/client_config/lb_policies/pick_first.h
@@ -31,13 +31,13 @@
  *
  */
 
-#ifndef GRPC_CORE_CLIENT_CONFIG_LB_POLICIES_PICK_FIRST_H
-#define GRPC_CORE_CLIENT_CONFIG_LB_POLICIES_PICK_FIRST_H
+#ifndef GRPC_CORE_LIB_CLIENT_CONFIG_LB_POLICIES_PICK_FIRST_H
+#define GRPC_CORE_LIB_CLIENT_CONFIG_LB_POLICIES_PICK_FIRST_H
 
-#include "src/core/client_config/lb_policy_factory.h"
+#include "src/core/lib/client_config/lb_policy_factory.h"
 
 /** Returns a load balancing factory for the pick first policy, which picks up
  * the first subchannel from \a subchannels to succesfully connect */
 grpc_lb_policy_factory *grpc_pick_first_lb_factory_create();
 
-#endif /* GRPC_CORE_CLIENT_CONFIG_LB_POLICIES_PICK_FIRST_H */
+#endif /* GRPC_CORE_LIB_CLIENT_CONFIG_LB_POLICIES_PICK_FIRST_H */
diff --git a/src/core/client_config/lb_policies/round_robin.c b/src/core/lib/client_config/lb_policies/round_robin.c
index 98d9acc75b..c904c5f921 100644
--- a/src/core/client_config/lb_policies/round_robin.c
+++ b/src/core/lib/client_config/lb_policies/round_robin.c
@@ -31,12 +31,12 @@
  *
  */
 
-#include "src/core/client_config/lb_policies/round_robin.h"
+#include "src/core/lib/client_config/lb_policies/round_robin.h"
 
 #include <string.h>
 
 #include <grpc/support/alloc.h>
-#include "src/core/transport/connectivity_state.h"
+#include "src/core/lib/transport/connectivity_state.h"
 
 typedef struct round_robin_lb_policy round_robin_lb_policy;
 
@@ -483,8 +483,14 @@ static void rr_ping_one(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
 }
 
 static const grpc_lb_policy_vtable round_robin_lb_policy_vtable = {
-    rr_destroy, rr_shutdown, rr_pick, rr_cancel_pick, rr_ping_one, rr_exit_idle,
-    rr_check_connectivity, rr_notify_on_state_change};
+    rr_destroy,
+    rr_shutdown,
+    rr_pick,
+    rr_cancel_pick,
+    rr_ping_one,
+    rr_exit_idle,
+    rr_check_connectivity,
+    rr_notify_on_state_change};
 
 static void round_robin_factory_ref(grpc_lb_policy_factory *factory) {}
 
diff --git a/src/core/client_config/lb_policies/round_robin.h b/src/core/lib/client_config/lb_policies/round_robin.h
index 7e6f1769e4..52db1caa0c 100644
--- a/src/core/client_config/lb_policies/round_robin.h
+++ b/src/core/lib/client_config/lb_policies/round_robin.h
@@ -31,16 +31,16 @@
  *
  */
 
-#ifndef GRPC_CORE_CLIENT_CONFIG_LB_POLICIES_ROUND_ROBIN_H
-#define GRPC_CORE_CLIENT_CONFIG_LB_POLICIES_ROUND_ROBIN_H
+#ifndef GRPC_CORE_LIB_CLIENT_CONFIG_LB_POLICIES_ROUND_ROBIN_H
+#define GRPC_CORE_LIB_CLIENT_CONFIG_LB_POLICIES_ROUND_ROBIN_H
 
-#include "src/core/client_config/lb_policy.h"
+#include "src/core/lib/client_config/lb_policy.h"
 
 extern int grpc_lb_round_robin_trace;
 
-#include "src/core/client_config/lb_policy_factory.h"
+#include "src/core/lib/client_config/lb_policy_factory.h"
 
 /** Returns a load balancing factory for the round robin policy */
 grpc_lb_policy_factory *grpc_round_robin_lb_factory_create();
 
-#endif /* GRPC_CORE_CLIENT_CONFIG_LB_POLICIES_ROUND_ROBIN_H */
+#endif /* GRPC_CORE_LIB_CLIENT_CONFIG_LB_POLICIES_ROUND_ROBIN_H */
diff --git a/src/core/client_config/lb_policy.c b/src/core/lib/client_config/lb_policy.c
index 0d8b007336..ee20ccd76a 100644
--- a/src/core/client_config/lb_policy.c
+++ b/src/core/lib/client_config/lb_policy.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/client_config/lb_policy.h"
+#include "src/core/lib/client_config/lb_policy.h"
 
 #define WEAK_REF_BITS 16
 
diff --git a/src/core/client_config/lb_policy.h b/src/core/lib/client_config/lb_policy.h
index ffebc2a69c..58a0a04d85 100644
--- a/src/core/client_config/lb_policy.h
+++ b/src/core/lib/client_config/lb_policy.h
@@ -31,11 +31,11 @@
  *
  */
 
-#ifndef GRPC_CORE_CLIENT_CONFIG_LB_POLICY_H
-#define GRPC_CORE_CLIENT_CONFIG_LB_POLICY_H
+#ifndef GRPC_CORE_LIB_CLIENT_CONFIG_LB_POLICY_H
+#define GRPC_CORE_LIB_CLIENT_CONFIG_LB_POLICY_H
 
-#include "src/core/client_config/subchannel.h"
-#include "src/core/transport/connectivity_state.h"
+#include "src/core/lib/client_config/subchannel.h"
+#include "src/core/lib/transport/connectivity_state.h"
 
 /** A load balancing policy: specified by a vtable and a struct (which
     is expected to be extended to contain some parameters) */
@@ -141,4 +141,4 @@ void grpc_lb_policy_notify_on_state_change(grpc_exec_ctx *exec_ctx,
 grpc_connectivity_state grpc_lb_policy_check_connectivity(
     grpc_exec_ctx *exec_ctx, grpc_lb_policy *policy);
 
-#endif /* GRPC_CORE_CLIENT_CONFIG_LB_POLICY_H */
+#endif /* GRPC_CORE_LIB_CLIENT_CONFIG_LB_POLICY_H */
diff --git a/src/core/client_config/lb_policy_factory.c b/src/core/lib/client_config/lb_policy_factory.c
index e49de544e3..2ca6f42f89 100644
--- a/src/core/client_config/lb_policy_factory.c
+++ b/src/core/lib/client_config/lb_policy_factory.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/client_config/lb_policy_factory.h"
+#include "src/core/lib/client_config/lb_policy_factory.h"
 
 void grpc_lb_policy_factory_ref(grpc_lb_policy_factory* factory) {
   factory->vtable->ref(factory);
diff --git a/src/core/client_config/lb_policy_factory.h b/src/core/lib/client_config/lb_policy_factory.h
index 842ba96098..36eaf178d9 100644
--- a/src/core/client_config/lb_policy_factory.h
+++ b/src/core/lib/client_config/lb_policy_factory.h
@@ -31,11 +31,11 @@
  *
  */
 
-#ifndef GRPC_CORE_CLIENT_CONFIG_LB_POLICY_FACTORY_H
-#define GRPC_CORE_CLIENT_CONFIG_LB_POLICY_FACTORY_H
+#ifndef GRPC_CORE_LIB_CLIENT_CONFIG_LB_POLICY_FACTORY_H
+#define GRPC_CORE_LIB_CLIENT_CONFIG_LB_POLICY_FACTORY_H
 
-#include "src/core/client_config/lb_policy.h"
-#include "src/core/client_config/subchannel.h"
+#include "src/core/lib/client_config/lb_policy.h"
+#include "src/core/lib/client_config/subchannel.h"
 
 typedef struct grpc_lb_policy_factory grpc_lb_policy_factory;
 typedef struct grpc_lb_policy_factory_vtable grpc_lb_policy_factory_vtable;
@@ -70,4 +70,4 @@ void grpc_lb_policy_factory_unref(grpc_lb_policy_factory *factory);
 grpc_lb_policy *grpc_lb_policy_factory_create_lb_policy(
     grpc_lb_policy_factory *factory, grpc_lb_policy_args *args);
 
-#endif /* GRPC_CORE_CLIENT_CONFIG_LB_POLICY_FACTORY_H */
+#endif /* GRPC_CORE_LIB_CLIENT_CONFIG_LB_POLICY_FACTORY_H */
diff --git a/src/core/client_config/lb_policy_registry.c b/src/core/lib/client_config/lb_policy_registry.c
index fc302e82d7..13acfe78cd 100644
--- a/src/core/client_config/lb_policy_registry.c
+++ b/src/core/lib/client_config/lb_policy_registry.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/client_config/lb_policy_registry.h"
+#include "src/core/lib/client_config/lb_policy_registry.h"
 
 #include <string.h>
 
diff --git a/src/core/client_config/lb_policy_registry.h b/src/core/lib/client_config/lb_policy_registry.h
index f3a08a3558..c251fd9f08 100644
--- a/src/core/client_config/lb_policy_registry.h
+++ b/src/core/lib/client_config/lb_policy_registry.h
@@ -31,10 +31,10 @@
  *
  */
 
-#ifndef GRPC_CORE_CLIENT_CONFIG_LB_POLICY_REGISTRY_H
-#define GRPC_CORE_CLIENT_CONFIG_LB_POLICY_REGISTRY_H
+#ifndef GRPC_CORE_LIB_CLIENT_CONFIG_LB_POLICY_REGISTRY_H
+#define GRPC_CORE_LIB_CLIENT_CONFIG_LB_POLICY_REGISTRY_H
 
-#include "src/core/client_config/lb_policy_factory.h"
+#include "src/core/lib/client_config/lb_policy_factory.h"
 
 /** Initialize the registry and set \a default_factory as the factory to be
  * returned when no name is provided in a lookup */
@@ -51,4 +51,4 @@ void grpc_register_lb_policy(grpc_lb_policy_factory *factory);
 grpc_lb_policy *grpc_lb_policy_create(const char *name,
                                       grpc_lb_policy_args *args);
 
-#endif /* GRPC_CORE_CLIENT_CONFIG_LB_POLICY_REGISTRY_H */
+#endif /* GRPC_CORE_LIB_CLIENT_CONFIG_LB_POLICY_REGISTRY_H */
diff --git a/src/core/client_config/resolver.c b/src/core/lib/client_config/resolver.c
index eda01e72ba..32f0643adb 100644
--- a/src/core/client_config/resolver.c
+++ b/src/core/lib/client_config/resolver.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/client_config/resolver.h"
+#include "src/core/lib/client_config/resolver.h"
 
 void grpc_resolver_init(grpc_resolver *resolver,
                         const grpc_resolver_vtable *vtable) {
diff --git a/src/core/client_config/resolver.h b/src/core/lib/client_config/resolver.h
index 96f88fef84..1ee879293a 100644
--- a/src/core/client_config/resolver.h
+++ b/src/core/lib/client_config/resolver.h
@@ -31,12 +31,12 @@
  *
  */
 
-#ifndef GRPC_CORE_CLIENT_CONFIG_RESOLVER_H
-#define GRPC_CORE_CLIENT_CONFIG_RESOLVER_H
+#ifndef GRPC_CORE_LIB_CLIENT_CONFIG_RESOLVER_H
+#define GRPC_CORE_LIB_CLIENT_CONFIG_RESOLVER_H
 
-#include "src/core/client_config/client_config.h"
-#include "src/core/client_config/subchannel.h"
-#include "src/core/iomgr/iomgr.h"
+#include "src/core/lib/client_config/client_config.h"
+#include "src/core/lib/client_config/subchannel.h"
+#include "src/core/lib/iomgr/iomgr.h"
 
 typedef struct grpc_resolver grpc_resolver;
 typedef struct grpc_resolver_vtable grpc_resolver_vtable;
@@ -91,4 +91,4 @@ void grpc_resolver_next(grpc_exec_ctx *exec_ctx, grpc_resolver *resolver,
                         grpc_client_config **target_config,
                         grpc_closure *on_complete);
 
-#endif /* GRPC_CORE_CLIENT_CONFIG_RESOLVER_H */
+#endif /* GRPC_CORE_LIB_CLIENT_CONFIG_RESOLVER_H */
diff --git a/src/core/client_config/resolver_factory.c b/src/core/lib/client_config/resolver_factory.c
index e7e9196ac4..0f76c664fa 100644
--- a/src/core/client_config/resolver_factory.c
+++ b/src/core/lib/client_config/resolver_factory.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/client_config/resolver_factory.h"
+#include "src/core/lib/client_config/resolver_factory.h"
 
 void grpc_resolver_factory_ref(grpc_resolver_factory* factory) {
   factory->vtable->ref(factory);
diff --git a/src/core/client_config/resolver_factory.h b/src/core/lib/client_config/resolver_factory.h
index 477f8db7f7..7765c3c844 100644
--- a/src/core/client_config/resolver_factory.h
+++ b/src/core/lib/client_config/resolver_factory.h
@@ -31,12 +31,12 @@
  *
  */
 
-#ifndef GRPC_CORE_CLIENT_CONFIG_RESOLVER_FACTORY_H
-#define GRPC_CORE_CLIENT_CONFIG_RESOLVER_FACTORY_H
+#ifndef GRPC_CORE_LIB_CLIENT_CONFIG_RESOLVER_FACTORY_H
+#define GRPC_CORE_LIB_CLIENT_CONFIG_RESOLVER_FACTORY_H
 
-#include "src/core/client_config/resolver.h"
-#include "src/core/client_config/subchannel_factory.h"
-#include "src/core/client_config/uri_parser.h"
+#include "src/core/lib/client_config/resolver.h"
+#include "src/core/lib/client_config/subchannel_factory.h"
+#include "src/core/lib/client_config/uri_parser.h"
 
 typedef struct grpc_resolver_factory grpc_resolver_factory;
 typedef struct grpc_resolver_factory_vtable grpc_resolver_factory_vtable;
@@ -79,4 +79,4 @@ grpc_resolver *grpc_resolver_factory_create_resolver(
 char *grpc_resolver_factory_get_default_authority(
     grpc_resolver_factory *factory, grpc_uri *uri);
 
-#endif /* GRPC_CORE_CLIENT_CONFIG_RESOLVER_FACTORY_H */
+#endif /* GRPC_CORE_LIB_CLIENT_CONFIG_RESOLVER_FACTORY_H */
diff --git a/src/core/client_config/resolver_registry.c b/src/core/lib/client_config/resolver_registry.c
index 89a945c2d3..29bd00c284 100644
--- a/src/core/client_config/resolver_registry.c
+++ b/src/core/lib/client_config/resolver_registry.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/client_config/resolver_registry.h"
+#include "src/core/lib/client_config/resolver_registry.h"
 
 #include <string.h>
 
diff --git a/src/core/client_config/resolver_registry.h b/src/core/lib/client_config/resolver_registry.h
index 1e4cebee0b..22289ca6bd 100644
--- a/src/core/client_config/resolver_registry.h
+++ b/src/core/lib/client_config/resolver_registry.h
@@ -31,10 +31,10 @@
  *
  */
 
-#ifndef GRPC_CORE_CLIENT_CONFIG_RESOLVER_REGISTRY_H
-#define GRPC_CORE_CLIENT_CONFIG_RESOLVER_REGISTRY_H
+#ifndef GRPC_CORE_LIB_CLIENT_CONFIG_RESOLVER_REGISTRY_H
+#define GRPC_CORE_LIB_CLIENT_CONFIG_RESOLVER_REGISTRY_H
 
-#include "src/core/client_config/resolver_factory.h"
+#include "src/core/lib/client_config/resolver_factory.h"
 
 void grpc_resolver_registry_init(const char *default_prefix);
 void grpc_resolver_registry_shutdown(void);
@@ -62,4 +62,4 @@ grpc_resolver *grpc_resolver_create(
     representing the default authority to pass from a client. */
 char *grpc_get_default_authority(const char *target);
 
-#endif /* GRPC_CORE_CLIENT_CONFIG_RESOLVER_REGISTRY_H */
+#endif /* GRPC_CORE_LIB_CLIENT_CONFIG_RESOLVER_REGISTRY_H */
diff --git a/src/core/client_config/resolvers/dns_resolver.c b/src/core/lib/client_config/resolvers/dns_resolver.c
index e28e4757a1..ab445730ad 100644
--- a/src/core/client_config/resolvers/dns_resolver.c
+++ b/src/core/lib/client_config/resolvers/dns_resolver.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/client_config/resolvers/dns_resolver.h"
+#include "src/core/lib/client_config/resolvers/dns_resolver.h"
 
 #include <string.h>
 
@@ -39,10 +39,16 @@
 #include <grpc/support/host_port.h>
 #include <grpc/support/string_util.h>
 
-#include "src/core/client_config/lb_policy_registry.h"
-#include "src/core/iomgr/resolve_address.h"
-#include "src/core/iomgr/timer.h"
-#include "src/core/support/string.h"
+#include "src/core/lib/client_config/lb_policy_registry.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/support/backoff.h"
+#include "src/core/lib/support/string.h"
+
+#define BACKOFF_MULTIPLIER 1.6
+#define BACKOFF_JITTER 0.2
+#define BACKOFF_MIN_SECONDS 1
+#define BACKOFF_MAX_SECONDS 120
 
 typedef struct {
   /** base class: must be first */
@@ -75,6 +81,8 @@ typedef struct {
   /** retry timer */
   bool have_retry_timer;
   grpc_timer retry_timer;
+  /** retry backoff state */
+  gpr_backoff backoff_state;
 } dns_resolver;
 
 static void dns_destroy(grpc_exec_ctx *exec_ctx, grpc_resolver *r);
@@ -111,6 +119,7 @@ static void dns_channel_saw_error(grpc_exec_ctx *exec_ctx,
   dns_resolver *r = (dns_resolver *)resolver;
   gpr_mu_lock(&r->mu);
   if (!r->resolving) {
+    gpr_backoff_reset(&r->backoff_state);
     dns_start_resolving_locked(r);
   }
   gpr_mu_unlock(&r->mu);
@@ -125,6 +134,7 @@ static void dns_next(grpc_exec_ctx *exec_ctx, grpc_resolver *resolver,
   r->next_completion = on_complete;
   r->target_config = target_config;
   if (r->resolved_version == 0 && !r->resolving) {
+    gpr_backoff_reset(&r->backoff_state);
     dns_start_resolving_locked(r);
   } else {
     dns_maybe_finish_next_locked(exec_ctx, r);
@@ -185,17 +195,16 @@ static void dns_on_resolved(grpc_exec_ctx *exec_ctx, void *arg,
     grpc_resolved_addresses_destroy(addresses);
     gpr_free(subchannels);
   } else {
-    int retry_seconds = 15;
-    gpr_log(GPR_DEBUG, "dns resolution failed: retrying in %d seconds",
-            retry_seconds);
+    gpr_timespec now = gpr_now(GPR_CLOCK_MONOTONIC);
+    gpr_timespec next_try = gpr_backoff_step(&r->backoff_state, now);
+    gpr_timespec timeout = gpr_time_sub(next_try, now);
+    gpr_log(GPR_DEBUG, "dns resolution failed: retrying in %d.%09d seconds",
+            timeout.tv_sec, timeout.tv_nsec);
     GPR_ASSERT(!r->have_retry_timer);
     r->have_retry_timer = true;
-    gpr_timespec now = gpr_now(GPR_CLOCK_MONOTONIC);
     GRPC_RESOLVER_REF(&r->base, "retry-timer");
-    grpc_timer_init(
-        exec_ctx, &r->retry_timer,
-        gpr_time_add(now, gpr_time_from_seconds(retry_seconds, GPR_TIMESPAN)),
-        dns_on_retry_timer, r, now);
+    grpc_timer_init(exec_ctx, &r->retry_timer, next_try, dns_on_retry_timer, r,
+                    now);
   }
   if (r->resolved_config) {
     grpc_client_config_unref(exec_ctx, r->resolved_config);
@@ -263,6 +272,8 @@ static grpc_resolver *dns_create(grpc_resolver_args *args,
   r->name = gpr_strdup(path);
   r->default_port = gpr_strdup(default_port);
   r->subchannel_factory = args->subchannel_factory;
+  gpr_backoff_init(&r->backoff_state, BACKOFF_MULTIPLIER, BACKOFF_JITTER,
+                   BACKOFF_MIN_SECONDS * 1000, BACKOFF_MAX_SECONDS * 1000);
   grpc_subchannel_factory_ref(r->subchannel_factory);
   r->lb_policy_name = gpr_strdup(lb_policy_name);
   return &r->base;
diff --git a/src/core/client_config/resolvers/dns_resolver.h b/src/core/lib/client_config/resolvers/dns_resolver.h
index b24280b507..eb46e41c77 100644
--- a/src/core/client_config/resolvers/dns_resolver.h
+++ b/src/core/lib/client_config/resolvers/dns_resolver.h
@@ -31,12 +31,12 @@
  *
  */
 
-#ifndef GRPC_CORE_CLIENT_CONFIG_RESOLVERS_DNS_RESOLVER_H
-#define GRPC_CORE_CLIENT_CONFIG_RESOLVERS_DNS_RESOLVER_H
+#ifndef GRPC_CORE_LIB_CLIENT_CONFIG_RESOLVERS_DNS_RESOLVER_H
+#define GRPC_CORE_LIB_CLIENT_CONFIG_RESOLVERS_DNS_RESOLVER_H
 
-#include "src/core/client_config/resolver_factory.h"
+#include "src/core/lib/client_config/resolver_factory.h"
 
 /** Create a dns resolver factory */
 grpc_resolver_factory *grpc_dns_resolver_factory_create(void);
 
-#endif /* GRPC_CORE_CLIENT_CONFIG_RESOLVERS_DNS_RESOLVER_H */
+#endif /* GRPC_CORE_LIB_CLIENT_CONFIG_RESOLVERS_DNS_RESOLVER_H */
diff --git a/src/core/client_config/resolvers/sockaddr_resolver.c b/src/core/lib/client_config/resolvers/sockaddr_resolver.c
index 68910ad975..66cddc3ed9 100644
--- a/src/core/client_config/resolvers/sockaddr_resolver.c
+++ b/src/core/lib/client_config/resolvers/sockaddr_resolver.c
@@ -33,21 +33,19 @@
 
 #include <grpc/support/port_platform.h>
 
-#include "src/core/client_config/resolvers/sockaddr_resolver.h"
+#include "src/core/lib/client_config/resolvers/sockaddr_resolver.h"
 
 #include <stdio.h>
 #include <string.h>
-#ifdef GPR_POSIX_SOCKET
-#include <sys/un.h>
-#endif
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/host_port.h>
 #include <grpc/support/string_util.h>
 
-#include "src/core/client_config/lb_policy_registry.h"
-#include "src/core/iomgr/resolve_address.h"
-#include "src/core/support/string.h"
+#include "src/core/lib/client_config/lb_policy_registry.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/iomgr/unix_sockets_posix.h"
+#include "src/core/lib/support/string.h"
 
 typedef struct {
   /** base class: must be first */
@@ -168,24 +166,6 @@ static void sockaddr_destroy(grpc_exec_ctx *exec_ctx, grpc_resolver *gr) {
   gpr_free(r);
 }
 
-#ifdef GPR_POSIX_SOCKET
-static int parse_unix(grpc_uri *uri, struct sockaddr_storage *addr,
-                      size_t *len) {
-  struct sockaddr_un *un = (struct sockaddr_un *)addr;
-
-  un->sun_family = AF_UNIX;
-  strcpy(un->sun_path, uri->path);
-  *len = strlen(un->sun_path) + sizeof(un->sun_family) + 1;
-
-  return 1;
-}
-
-static char *unix_get_default_authority(grpc_resolver_factory *factory,
-                                        grpc_uri *uri) {
-  return gpr_strdup("localhost");
-}
-#endif
-
 static char *ip_get_default_authority(grpc_uri *uri) {
   const char *path = uri->path;
   if (path[0] == '/') ++path;
@@ -371,21 +351,22 @@ static void sockaddr_factory_ref(grpc_resolver_factory *factory) {}
 
 static void sockaddr_factory_unref(grpc_resolver_factory *factory) {}
 
-#define DECL_FACTORY(name)                                                  \
+#define DECL_FACTORY(name, prefix)                                          \
   static grpc_resolver *name##_factory_create_resolver(                     \
       grpc_resolver_factory *factory, grpc_resolver_args *args) {           \
-    return sockaddr_create(args, "pick_first", parse_##name);               \
+    return sockaddr_create(args, "pick_first", prefix##parse_##name);       \
   }                                                                         \
   static const grpc_resolver_factory_vtable name##_factory_vtable = {       \
       sockaddr_factory_ref, sockaddr_factory_unref,                         \
-      name##_factory_create_resolver, name##_get_default_authority, #name}; \
+      name##_factory_create_resolver, prefix##name##_get_default_authority, \
+      #name};                                                               \
   static grpc_resolver_factory name##_resolver_factory = {                  \
       &name##_factory_vtable};                                              \
   grpc_resolver_factory *grpc_##name##_resolver_factory_create() {          \
     return &name##_resolver_factory;                                        \
   }
 
-#ifdef GPR_POSIX_SOCKET
-DECL_FACTORY(unix)
+#ifdef GPR_HAVE_UNIX_SOCKET
+DECL_FACTORY(unix, grpc_)
 #endif
-DECL_FACTORY(ipv4) DECL_FACTORY(ipv6)
+DECL_FACTORY(ipv4, ) DECL_FACTORY(ipv6, )
diff --git a/src/core/client_config/resolvers/sockaddr_resolver.h b/src/core/lib/client_config/resolvers/sockaddr_resolver.h
index f050329431..45c55bd160 100644
--- a/src/core/client_config/resolvers/sockaddr_resolver.h
+++ b/src/core/lib/client_config/resolvers/sockaddr_resolver.h
@@ -31,12 +31,12 @@
  *
  */
 
-#ifndef GRPC_CORE_CLIENT_CONFIG_RESOLVERS_SOCKADDR_RESOLVER_H
-#define GRPC_CORE_CLIENT_CONFIG_RESOLVERS_SOCKADDR_RESOLVER_H
+#ifndef GRPC_CORE_LIB_CLIENT_CONFIG_RESOLVERS_SOCKADDR_RESOLVER_H
+#define GRPC_CORE_LIB_CLIENT_CONFIG_RESOLVERS_SOCKADDR_RESOLVER_H
 
 #include <grpc/support/port_platform.h>
 
-#include "src/core/client_config/resolver_factory.h"
+#include "src/core/lib/client_config/resolver_factory.h"
 
 grpc_resolver_factory *grpc_ipv4_resolver_factory_create(void);
 
@@ -47,4 +47,4 @@ grpc_resolver_factory *grpc_ipv6_resolver_factory_create(void);
 grpc_resolver_factory *grpc_unix_resolver_factory_create(void);
 #endif
 
-#endif /* GRPC_CORE_CLIENT_CONFIG_RESOLVERS_SOCKADDR_RESOLVER_H */
+#endif /* GRPC_CORE_LIB_CLIENT_CONFIG_RESOLVERS_SOCKADDR_RESOLVER_H */
diff --git a/src/core/client_config/resolvers/zookeeper_resolver.c b/src/core/lib/client_config/resolvers/zookeeper_resolver.c
index 166738e768..3bb0bbdf5c 100644
--- a/src/core/client_config/resolvers/zookeeper_resolver.c
+++ b/src/core/lib/client_config/resolvers/zookeeper_resolver.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/client_config/resolvers/zookeeper_resolver.h"
+#include "src/core/lib/client_config/resolvers/zookeeper_resolver.h"
 
 #include <string.h>
 
@@ -41,12 +41,12 @@
 #include <grpc/grpc_zookeeper.h>
 #include <zookeeper/zookeeper.h>
 
-#include "src/core/client_config/lb_policy_registry.h"
-#include "src/core/client_config/resolver_registry.h"
-#include "src/core/iomgr/resolve_address.h"
-#include "src/core/support/string.h"
-#include "src/core/surface/api_trace.h"
-#include "src/core/json/json.h"
+#include "src/core/lib/client_config/lb_policy_registry.h"
+#include "src/core/lib/client_config/resolver_registry.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/json/json.h"
+#include "src/core/lib/support/string.h"
+#include "src/core/lib/surface/api_trace.h"
 
 /** Zookeeper session expiration time in milliseconds */
 #define GRPC_ZOOKEEPER_SESSION_TIMEOUT 15000
diff --git a/src/core/client_config/resolvers/zookeeper_resolver.h b/src/core/lib/client_config/resolvers/zookeeper_resolver.h
index 04bd3ca875..7ee7604360 100644
--- a/src/core/client_config/resolvers/zookeeper_resolver.h
+++ b/src/core/lib/client_config/resolvers/zookeeper_resolver.h
@@ -31,12 +31,12 @@
  *
  */
 
-#ifndef GRPC_CORE_CLIENT_CONFIG_RESOLVERS_ZOOKEEPER_RESOLVER_H
-#define GRPC_CORE_CLIENT_CONFIG_RESOLVERS_ZOOKEEPER_RESOLVER_H
+#ifndef GRPC_CORE_LIB_CLIENT_CONFIG_RESOLVERS_ZOOKEEPER_RESOLVER_H
+#define GRPC_CORE_LIB_CLIENT_CONFIG_RESOLVERS_ZOOKEEPER_RESOLVER_H
 
-#include "src/core/client_config/resolver_factory.h"
+#include "src/core/lib/client_config/resolver_factory.h"
 
 /** Create a zookeeper resolver factory */
 grpc_resolver_factory *grpc_zookeeper_resolver_factory_create(void);
 
-#endif /* GRPC_CORE_CLIENT_CONFIG_RESOLVERS_ZOOKEEPER_RESOLVER_H */
+#endif /* GRPC_CORE_LIB_CLIENT_CONFIG_RESOLVERS_ZOOKEEPER_RESOLVER_H */
diff --git a/src/core/client_config/subchannel.c b/src/core/lib/client_config/subchannel.c
index 8f150a8d81..41242f0dd7 100644
--- a/src/core/client_config/subchannel.c
+++ b/src/core/lib/client_config/subchannel.c
@@ -31,24 +31,24 @@
  *
  */
 
-#include "src/core/client_config/subchannel.h"
+#include "src/core/lib/client_config/subchannel.h"
 
 #include <string.h>
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/avl.h>
 
-#include "src/core/channel/channel_args.h"
-#include "src/core/channel/client_channel.h"
-#include "src/core/channel/connected_channel.h"
-#include "src/core/client_config/initial_connect_string.h"
-#include "src/core/client_config/subchannel_index.h"
-#include "src/core/iomgr/timer.h"
-#include "src/core/profiling/timers.h"
-#include "src/core/support/backoff.h"
-#include "src/core/surface/channel.h"
-#include "src/core/surface/channel_init.h"
-#include "src/core/transport/connectivity_state.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/client_channel.h"
+#include "src/core/lib/channel/connected_channel.h"
+#include "src/core/lib/client_config/initial_connect_string.h"
+#include "src/core/lib/client_config/subchannel_index.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/support/backoff.h"
+#include "src/core/lib/surface/channel.h"
+#include "src/core/lib/surface/channel_init.h"
+#include "src/core/lib/transport/connectivity_state.h"
 
 #define INTERNAL_REF_BITS 16
 #define STRONG_REF_MASK (~(gpr_atm)((1 << INTERNAL_REF_BITS) - 1))
@@ -185,8 +185,8 @@ static void connection_destroy(grpc_exec_ctx *exec_ctx, void *arg,
   gpr_free(c);
 }
 
-void grpc_connected_subchannel_ref(grpc_connected_subchannel *c
-                                       GRPC_SUBCHANNEL_REF_EXTRA_ARGS) {
+void grpc_connected_subchannel_ref(
+    grpc_connected_subchannel *c GRPC_SUBCHANNEL_REF_EXTRA_ARGS) {
   GRPC_CHANNEL_STACK_REF(CHANNEL_STACK_FROM_CONNECTION(c), REF_REASON);
 }
 
@@ -227,8 +227,8 @@ static gpr_atm ref_mutate(grpc_subchannel *c, gpr_atm delta,
   return old_val;
 }
 
-grpc_subchannel *grpc_subchannel_ref(grpc_subchannel *c
-                                         GRPC_SUBCHANNEL_REF_EXTRA_ARGS) {
+grpc_subchannel *grpc_subchannel_ref(
+    grpc_subchannel *c GRPC_SUBCHANNEL_REF_EXTRA_ARGS) {
   gpr_atm old_refs;
   old_refs = ref_mutate(c, (1 << INTERNAL_REF_BITS),
                         0 REF_MUTATE_PURPOSE("STRONG_REF"));
@@ -236,8 +236,8 @@ grpc_subchannel *grpc_subchannel_ref(grpc_subchannel *c
   return c;
 }
 
-grpc_subchannel *grpc_subchannel_weak_ref(grpc_subchannel *c
-                                              GRPC_SUBCHANNEL_REF_EXTRA_ARGS) {
+grpc_subchannel *grpc_subchannel_weak_ref(
+    grpc_subchannel *c GRPC_SUBCHANNEL_REF_EXTRA_ARGS) {
   gpr_atm old_refs;
   old_refs = ref_mutate(c, 1, 0 REF_MUTATE_PURPOSE("WEAK_REF"));
   GPR_ASSERT(old_refs != 0);
@@ -626,8 +626,8 @@ static void subchannel_call_destroy(grpc_exec_ctx *exec_ctx, void *call,
   GPR_TIMER_END("grpc_subchannel_call_unref.destroy", 0);
 }
 
-void grpc_subchannel_call_ref(grpc_subchannel_call *c
-                                  GRPC_SUBCHANNEL_REF_EXTRA_ARGS) {
+void grpc_subchannel_call_ref(
+    grpc_subchannel_call *c GRPC_SUBCHANNEL_REF_EXTRA_ARGS) {
   GRPC_CALL_STACK_REF(SUBCHANNEL_CALL_TO_CALL_STACK(c), REF_REASON);
 }
 
diff --git a/src/core/client_config/subchannel.h b/src/core/lib/client_config/subchannel.h
index ef9f2f1d1e..b4f545be52 100644
--- a/src/core/client_config/subchannel.h
+++ b/src/core/lib/client_config/subchannel.h
@@ -31,12 +31,12 @@
  *
  */
 
-#ifndef GRPC_CORE_CLIENT_CONFIG_SUBCHANNEL_H
-#define GRPC_CORE_CLIENT_CONFIG_SUBCHANNEL_H
+#ifndef GRPC_CORE_LIB_CLIENT_CONFIG_SUBCHANNEL_H
+#define GRPC_CORE_LIB_CLIENT_CONFIG_SUBCHANNEL_H
 
-#include "src/core/channel/channel_stack.h"
-#include "src/core/client_config/connector.h"
-#include "src/core/transport/connectivity_state.h"
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/client_config/connector.h"
+#include "src/core/lib/transport/connectivity_state.h"
 
 /** A (sub-)channel that knows how to connect to exactly one target
     address. Provides a target for load balancing. */
@@ -83,25 +83,25 @@ typedef struct grpc_subchannel_args grpc_subchannel_args;
 #define GRPC_SUBCHANNEL_REF_EXTRA_ARGS
 #endif
 
-grpc_subchannel *grpc_subchannel_ref(grpc_subchannel *channel
-                                         GRPC_SUBCHANNEL_REF_EXTRA_ARGS);
+grpc_subchannel *grpc_subchannel_ref(
+    grpc_subchannel *channel GRPC_SUBCHANNEL_REF_EXTRA_ARGS);
 grpc_subchannel *grpc_subchannel_ref_from_weak_ref(
     grpc_subchannel *channel GRPC_SUBCHANNEL_REF_EXTRA_ARGS);
 void grpc_subchannel_unref(grpc_exec_ctx *exec_ctx,
                            grpc_subchannel *channel
                                GRPC_SUBCHANNEL_REF_EXTRA_ARGS);
-grpc_subchannel *grpc_subchannel_weak_ref(grpc_subchannel *channel
-                                              GRPC_SUBCHANNEL_REF_EXTRA_ARGS);
+grpc_subchannel *grpc_subchannel_weak_ref(
+    grpc_subchannel *channel GRPC_SUBCHANNEL_REF_EXTRA_ARGS);
 void grpc_subchannel_weak_unref(grpc_exec_ctx *exec_ctx,
                                 grpc_subchannel *channel
                                     GRPC_SUBCHANNEL_REF_EXTRA_ARGS);
-void grpc_connected_subchannel_ref(grpc_connected_subchannel *channel
-                                       GRPC_SUBCHANNEL_REF_EXTRA_ARGS);
+void grpc_connected_subchannel_ref(
+    grpc_connected_subchannel *channel GRPC_SUBCHANNEL_REF_EXTRA_ARGS);
 void grpc_connected_subchannel_unref(grpc_exec_ctx *exec_ctx,
                                      grpc_connected_subchannel *channel
                                          GRPC_SUBCHANNEL_REF_EXTRA_ARGS);
-void grpc_subchannel_call_ref(grpc_subchannel_call *call
-                                  GRPC_SUBCHANNEL_REF_EXTRA_ARGS);
+void grpc_subchannel_call_ref(
+    grpc_subchannel_call *call GRPC_SUBCHANNEL_REF_EXTRA_ARGS);
 void grpc_subchannel_call_unref(grpc_exec_ctx *exec_ctx,
                                 grpc_subchannel_call *call
                                     GRPC_SUBCHANNEL_REF_EXTRA_ARGS);
@@ -171,4 +171,4 @@ grpc_subchannel *grpc_subchannel_create(grpc_exec_ctx *exec_ctx,
                                         grpc_connector *connector,
                                         grpc_subchannel_args *args);
 
-#endif /* GRPC_CORE_CLIENT_CONFIG_SUBCHANNEL_H */
+#endif /* GRPC_CORE_LIB_CLIENT_CONFIG_SUBCHANNEL_H */
diff --git a/src/core/client_config/subchannel_factory.c b/src/core/lib/client_config/subchannel_factory.c
index 2c64219e8b..727a48a6c8 100644
--- a/src/core/client_config/subchannel_factory.c
+++ b/src/core/lib/client_config/subchannel_factory.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/client_config/subchannel_factory.h"
+#include "src/core/lib/client_config/subchannel_factory.h"
 
 void grpc_subchannel_factory_ref(grpc_subchannel_factory* factory) {
   factory->vtable->ref(factory);
diff --git a/src/core/client_config/subchannel_factory.h b/src/core/lib/client_config/subchannel_factory.h
index c638f377a6..3ba2f860fe 100644
--- a/src/core/client_config/subchannel_factory.h
+++ b/src/core/lib/client_config/subchannel_factory.h
@@ -31,11 +31,11 @@
  *
  */
 
-#ifndef GRPC_CORE_CLIENT_CONFIG_SUBCHANNEL_FACTORY_H
-#define GRPC_CORE_CLIENT_CONFIG_SUBCHANNEL_FACTORY_H
+#ifndef GRPC_CORE_LIB_CLIENT_CONFIG_SUBCHANNEL_FACTORY_H
+#define GRPC_CORE_LIB_CLIENT_CONFIG_SUBCHANNEL_FACTORY_H
 
-#include "src/core/channel/channel_stack.h"
-#include "src/core/client_config/subchannel.h"
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/client_config/subchannel.h"
 
 typedef struct grpc_subchannel_factory grpc_subchannel_factory;
 typedef struct grpc_subchannel_factory_vtable grpc_subchannel_factory_vtable;
@@ -63,4 +63,4 @@ grpc_subchannel *grpc_subchannel_factory_create_subchannel(
     grpc_exec_ctx *exec_ctx, grpc_subchannel_factory *factory,
     grpc_subchannel_args *args);
 
-#endif /* GRPC_CORE_CLIENT_CONFIG_SUBCHANNEL_FACTORY_H */
+#endif /* GRPC_CORE_LIB_CLIENT_CONFIG_SUBCHANNEL_FACTORY_H */
diff --git a/src/core/client_config/subchannel_index.c b/src/core/lib/client_config/subchannel_index.c
index 24cc76cf22..2c545002a2 100644
--- a/src/core/client_config/subchannel_index.c
+++ b/src/core/lib/client_config/subchannel_index.c
@@ -31,7 +31,7 @@
 //
 //
 
-#include "src/core/client_config/subchannel_index.h"
+#include "src/core/lib/client_config/subchannel_index.h"
 
 #include <stdbool.h>
 #include <string.h>
@@ -40,7 +40,7 @@
 #include <grpc/support/avl.h>
 #include <grpc/support/tls.h>
 
-#include "src/core/channel/channel_args.h"
+#include "src/core/lib/channel/channel_args.h"
 
 // a map of subchannel_key --> subchannel, used for detecting connections
 // to the same destination in order to share them
diff --git a/src/core/client_config/subchannel_index.h b/src/core/lib/client_config/subchannel_index.h
index 3cd5d12349..bc5f03beb4 100644
--- a/src/core/client_config/subchannel_index.h
+++ b/src/core/lib/client_config/subchannel_index.h
@@ -31,11 +31,11 @@
  *
  */
 
-#ifndef GRPC_CORE_CLIENT_CONFIG_SUBCHANNEL_INDEX_H
-#define GRPC_CORE_CLIENT_CONFIG_SUBCHANNEL_INDEX_H
+#ifndef GRPC_CORE_LIB_CLIENT_CONFIG_SUBCHANNEL_INDEX_H
+#define GRPC_CORE_LIB_CLIENT_CONFIG_SUBCHANNEL_INDEX_H
 
-#include "src/core/client_config/connector.h"
-#include "src/core/client_config/subchannel.h"
+#include "src/core/lib/client_config/connector.h"
+#include "src/core/lib/client_config/subchannel.h"
 
 /** \file Provides an index of active subchannels so that they can be
     shared amongst channels */
@@ -74,4 +74,4 @@ void grpc_subchannel_index_init(void);
 /** Shutdown the subchannel index (global) */
 void grpc_subchannel_index_shutdown(void);
 
-#endif /* GRPC_CORE_CLIENT_CONFIG_SUBCHANNEL_INDEX_H */
+#endif /* GRPC_CORE_LIB_CLIENT_CONFIG_SUBCHANNEL_INDEX_H */
diff --git a/src/core/client_config/uri_parser.c b/src/core/lib/client_config/uri_parser.c
index cbdfffcf8e..d3228dec5f 100644
--- a/src/core/client_config/uri_parser.c
+++ b/src/core/lib/client_config/uri_parser.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/client_config/uri_parser.h"
+#include "src/core/lib/client_config/uri_parser.h"
 
 #include <string.h>
 
diff --git a/src/core/client_config/uri_parser.h b/src/core/lib/client_config/uri_parser.h
index af013d8cac..d70d451e60 100644
--- a/src/core/client_config/uri_parser.h
+++ b/src/core/lib/client_config/uri_parser.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_CLIENT_CONFIG_URI_PARSER_H
-#define GRPC_CORE_CLIENT_CONFIG_URI_PARSER_H
+#ifndef GRPC_CORE_LIB_CLIENT_CONFIG_URI_PARSER_H
+#define GRPC_CORE_LIB_CLIENT_CONFIG_URI_PARSER_H
 
 typedef struct {
   char *scheme;
@@ -48,4 +48,4 @@ grpc_uri *grpc_uri_parse(const char *uri_text, int suppress_errors);
 /** destroy a uri */
 void grpc_uri_destroy(grpc_uri *uri);
 
-#endif /* GRPC_CORE_CLIENT_CONFIG_URI_PARSER_H */
+#endif /* GRPC_CORE_LIB_CLIENT_CONFIG_URI_PARSER_H */
diff --git a/src/core/compression/algorithm_metadata.h b/src/core/lib/compression/algorithm_metadata.h
index 34abf1dba2..47f33abdc7 100644
--- a/src/core/compression/algorithm_metadata.h
+++ b/src/core/lib/compression/algorithm_metadata.h
@@ -31,11 +31,11 @@
  *
  */
 
-#ifndef GRPC_CORE_COMPRESSION_ALGORITHM_METADATA_H
-#define GRPC_CORE_COMPRESSION_ALGORITHM_METADATA_H
+#ifndef GRPC_CORE_LIB_COMPRESSION_ALGORITHM_METADATA_H
+#define GRPC_CORE_LIB_COMPRESSION_ALGORITHM_METADATA_H
 
 #include <grpc/compression.h>
-#include "src/core/transport/metadata.h"
+#include "src/core/lib/transport/metadata.h"
 
 /** Return compression algorithm based metadata value */
 grpc_mdstr *grpc_compression_algorithm_mdstr(
@@ -50,4 +50,4 @@ grpc_mdelem *grpc_compression_encoding_mdelem(
 grpc_compression_algorithm grpc_compression_algorithm_from_mdstr(
     grpc_mdstr *str);
 
-#endif /* GRPC_CORE_COMPRESSION_ALGORITHM_METADATA_H */
+#endif /* GRPC_CORE_LIB_COMPRESSION_ALGORITHM_METADATA_H */
diff --git a/src/core/compression/compression_algorithm.c b/src/core/lib/compression/compression_algorithm.c
index 2810a38b68..f781b45042 100644
--- a/src/core/compression/compression_algorithm.c
+++ b/src/core/lib/compression/compression_algorithm.c
@@ -37,9 +37,9 @@
 #include <grpc/compression.h>
 #include <grpc/support/useful.h>
 
-#include "src/core/compression/algorithm_metadata.h"
-#include "src/core/surface/api_trace.h"
-#include "src/core/transport/static_metadata.h"
+#include "src/core/lib/compression/algorithm_metadata.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/transport/static_metadata.h"
 
 int grpc_compression_algorithm_parse(const char *name, size_t name_length,
                                      grpc_compression_algorithm *algorithm) {
diff --git a/src/core/compression/message_compress.c b/src/core/lib/compression/message_compress.c
index edc21a9eb7..b4b6a2d75e 100644
--- a/src/core/compression/message_compress.c
+++ b/src/core/lib/compression/message_compress.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/compression/message_compress.h"
+#include "src/core/lib/compression/message_compress.h"
 
 #include <string.h>
 
diff --git a/src/core/compression/message_compress.h b/src/core/lib/compression/message_compress.h
index 20b78c063b..b71608139e 100644
--- a/src/core/compression/message_compress.h
+++ b/src/core/lib/compression/message_compress.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_COMPRESSION_MESSAGE_COMPRESS_H
-#define GRPC_CORE_COMPRESSION_MESSAGE_COMPRESS_H
+#ifndef GRPC_CORE_LIB_COMPRESSION_MESSAGE_COMPRESS_H
+#define GRPC_CORE_LIB_COMPRESSION_MESSAGE_COMPRESS_H
 
 #include <grpc/compression.h>
 #include <grpc/support/slice_buffer.h>
@@ -49,4 +49,4 @@ int grpc_msg_compress(grpc_compression_algorithm algorithm,
 int grpc_msg_decompress(grpc_compression_algorithm algorithm,
                         gpr_slice_buffer* input, gpr_slice_buffer* output);
 
-#endif /* GRPC_CORE_COMPRESSION_MESSAGE_COMPRESS_H */
+#endif /* GRPC_CORE_LIB_COMPRESSION_MESSAGE_COMPRESS_H */
diff --git a/src/core/debug/trace.c b/src/core/lib/debug/trace.c
index 3b35d81cd8..786dd9324f 100644
--- a/src/core/debug/trace.c
+++ b/src/core/lib/debug/trace.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,14 +31,14 @@
  *
  */
 
-#include "src/core/debug/trace.h"
+#include "src/core/lib/debug/trace.h"
 
 #include <string.h>
 
 #include <grpc/grpc.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
-#include "src/core/support/env.h"
+#include "src/core/lib/support/env.h"
 
 typedef struct tracer {
   const char *name;
diff --git a/src/core/debug/trace.h b/src/core/lib/debug/trace.h
index 91ec14052e..76ea5a7c64 100644
--- a/src/core/debug/trace.h
+++ b/src/core/lib/debug/trace.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_DEBUG_TRACE_H
-#define GRPC_CORE_DEBUG_TRACE_H
+#ifndef GRPC_CORE_LIB_DEBUG_TRACE_H
+#define GRPC_CORE_LIB_DEBUG_TRACE_H
 
 #include <grpc/support/port_platform.h>
 
@@ -40,4 +40,4 @@ void grpc_register_tracer(const char *name, int *flag);
 void grpc_tracer_init(const char *env_var_name);
 void grpc_tracer_shutdown(void);
 
-#endif /* GRPC_CORE_DEBUG_TRACE_H */
+#endif /* GRPC_CORE_LIB_DEBUG_TRACE_H */
diff --git a/src/core/httpcli/format_request.c b/src/core/lib/http/format_request.c
index 04f2a2d99a..95b3918646 100644
--- a/src/core/httpcli/format_request.c
+++ b/src/core/lib/http/format_request.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,22 +31,22 @@
  *
  */
 
-#include "src/core/httpcli/format_request.h"
+#include "src/core/lib/http/format_request.h"
 
 #include <stdarg.h>
 #include <stdio.h>
 #include <string.h>
 
-#include "src/core/support/string.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/slice.h>
 #include <grpc/support/string_util.h>
 #include <grpc/support/useful.h>
+#include "src/core/lib/support/string.h"
 
 static void fill_common_header(const grpc_httpcli_request *request,
                                gpr_strvec *buf) {
   size_t i;
-  gpr_strvec_add(buf, gpr_strdup(request->path));
+  gpr_strvec_add(buf, gpr_strdup(request->http.path));
   gpr_strvec_add(buf, gpr_strdup(" HTTP/1.0\r\n"));
   /* just in case some crazy server really expects HTTP/1.1 */
   gpr_strvec_add(buf, gpr_strdup("Host: "));
@@ -56,10 +56,10 @@ static void fill_common_header(const grpc_httpcli_request *request,
   gpr_strvec_add(buf,
                  gpr_strdup("User-Agent: " GRPC_HTTPCLI_USER_AGENT "\r\n"));
   /* user supplied headers */
-  for (i = 0; i < request->hdr_count; i++) {
-    gpr_strvec_add(buf, gpr_strdup(request->hdrs[i].key));
+  for (i = 0; i < request->http.hdr_count; i++) {
+    gpr_strvec_add(buf, gpr_strdup(request->http.hdrs[i].key));
     gpr_strvec_add(buf, gpr_strdup(": "));
-    gpr_strvec_add(buf, gpr_strdup(request->hdrs[i].value));
+    gpr_strvec_add(buf, gpr_strdup(request->http.hdrs[i].value));
     gpr_strvec_add(buf, gpr_strdup("\r\n"));
   }
 }
@@ -94,8 +94,8 @@ gpr_slice grpc_httpcli_format_post_request(const grpc_httpcli_request *request,
   fill_common_header(request, &out);
   if (body_bytes) {
     uint8_t has_content_type = 0;
-    for (i = 0; i < request->hdr_count; i++) {
-      if (strcmp(request->hdrs[i].key, "Content-Type") == 0) {
+    for (i = 0; i < request->http.hdr_count; i++) {
+      if (strcmp(request->http.hdrs[i].key, "Content-Type") == 0) {
         has_content_type = 1;
         break;
       }
diff --git a/src/core/httpcli/format_request.h b/src/core/lib/http/format_request.h
index eb47cc90ca..2e933d804b 100644
--- a/src/core/httpcli/format_request.h
+++ b/src/core/lib/http/format_request.h
@@ -31,15 +31,15 @@
  *
  */
 
-#ifndef GRPC_CORE_HTTPCLI_FORMAT_REQUEST_H
-#define GRPC_CORE_HTTPCLI_FORMAT_REQUEST_H
+#ifndef GRPC_CORE_LIB_HTTP_FORMAT_REQUEST_H
+#define GRPC_CORE_LIB_HTTP_FORMAT_REQUEST_H
 
-#include "src/core/httpcli/httpcli.h"
 #include <grpc/support/slice.h>
+#include "src/core/lib/http/httpcli.h"
 
 gpr_slice grpc_httpcli_format_get_request(const grpc_httpcli_request *request);
 gpr_slice grpc_httpcli_format_post_request(const grpc_httpcli_request *request,
                                            const char *body_bytes,
                                            size_t body_size);
 
-#endif /* GRPC_CORE_HTTPCLI_FORMAT_REQUEST_H */
+#endif /* GRPC_CORE_LIB_HTTP_FORMAT_REQUEST_H */
diff --git a/src/core/httpcli/httpcli.c b/src/core/lib/http/httpcli.c
index 1219c444c7..aab28ad8b6 100644
--- a/src/core/httpcli/httpcli.c
+++ b/src/core/lib/http/httpcli.c
@@ -31,8 +31,8 @@
  *
  */
 
-#include "src/core/httpcli/httpcli.h"
-#include "src/core/iomgr/sockaddr.h"
+#include "src/core/lib/http/httpcli.h"
+#include "src/core/lib/iomgr/sockaddr.h"
 
 #include <string.h>
 
@@ -40,17 +40,17 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 
-#include "src/core/httpcli/format_request.h"
-#include "src/core/httpcli/parser.h"
-#include "src/core/iomgr/endpoint.h"
-#include "src/core/iomgr/iomgr_internal.h"
-#include "src/core/iomgr/resolve_address.h"
-#include "src/core/iomgr/tcp_client.h"
-#include "src/core/support/string.h"
+#include "src/core/lib/http/format_request.h"
+#include "src/core/lib/http/parser.h"
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/iomgr/tcp_client.h"
+#include "src/core/lib/support/string.h"
 
 typedef struct {
   gpr_slice request_text;
-  grpc_httpcli_parser parser;
+  grpc_http_parser parser;
   grpc_resolved_addresses *addresses;
   size_t next_address;
   grpc_endpoint *ep;
@@ -99,8 +99,9 @@ static void finish(grpc_exec_ctx *exec_ctx, internal_request *req,
                    int success) {
   grpc_pollset_set_del_pollset(exec_ctx, req->context->pollset_set,
                                req->pollset);
-  req->on_response(exec_ctx, req->user_data, success ? &req->parser.r : NULL);
-  grpc_httpcli_parser_destroy(&req->parser);
+  req->on_response(exec_ctx, req->user_data,
+                   success ? &req->parser.http.response : NULL);
+  grpc_http_parser_destroy(&req->parser);
   if (req->addresses != NULL) {
     grpc_resolved_addresses_destroy(req->addresses);
   }
@@ -129,7 +130,7 @@ static void on_read(grpc_exec_ctx *exec_ctx, void *user_data, bool success) {
   for (i = 0; i < req->incoming.count; i++) {
     if (GPR_SLICE_LENGTH(req->incoming.slices[i])) {
       req->have_read_byte = 1;
-      if (!grpc_httpcli_parser_parse(&req->parser, req->incoming.slices[i])) {
+      if (!grpc_http_parser_parse(&req->parser, req->incoming.slices[i])) {
         finish(exec_ctx, req, 0);
         return;
       }
@@ -141,7 +142,11 @@ static void on_read(grpc_exec_ctx *exec_ctx, void *user_data, bool success) {
   } else if (!req->have_read_byte) {
     next_address(exec_ctx, req);
   } else {
-    finish(exec_ctx, req, grpc_httpcli_parser_eof(&req->parser));
+    int parse_success = grpc_http_parser_eof(&req->parser);
+    if (parse_success && (req->parser.type != GRPC_HTTP_RESPONSE)) {
+      parse_success = 0;
+    }
+    finish(exec_ctx, req, parse_success);
   }
 }
 
@@ -223,7 +228,7 @@ static void internal_request_begin(
   internal_request *req = gpr_malloc(sizeof(internal_request));
   memset(req, 0, sizeof(*req));
   req->request_text = request_text;
-  grpc_httpcli_parser_init(&req->parser);
+  grpc_http_parser_init(&req->parser);
   req->on_response = on_response;
   req->user_data = user_data;
   req->deadline = deadline;
@@ -255,7 +260,7 @@ void grpc_httpcli_get(grpc_exec_ctx *exec_ctx, grpc_httpcli_context *context,
       g_get_override(exec_ctx, request, deadline, on_response, user_data)) {
     return;
   }
-  gpr_asprintf(&name, "HTTP:GET:%s:%s", request->host, request->path);
+  gpr_asprintf(&name, "HTTP:GET:%s:%s", request->host, request->http.path);
   internal_request_begin(exec_ctx, context, pollset, request, deadline,
                          on_response, user_data, name,
                          grpc_httpcli_format_get_request(request));
@@ -274,7 +279,7 @@ void grpc_httpcli_post(grpc_exec_ctx *exec_ctx, grpc_httpcli_context *context,
                       on_response, user_data)) {
     return;
   }
-  gpr_asprintf(&name, "HTTP:POST:%s:%s", request->host, request->path);
+  gpr_asprintf(&name, "HTTP:POST:%s:%s", request->host, request->http.path);
   internal_request_begin(
       exec_ctx, context, pollset, request, deadline, on_response, user_data,
       name, grpc_httpcli_format_post_request(request, body_bytes, body_size));
diff --git a/src/core/httpcli/httpcli.h b/src/core/lib/http/httpcli.h
index 1fe5782657..b8d54a8586 100644
--- a/src/core/httpcli/httpcli.h
+++ b/src/core/lib/http/httpcli.h
@@ -31,27 +31,20 @@
  *
  */
 
-#ifndef GRPC_CORE_HTTPCLI_HTTPCLI_H
-#define GRPC_CORE_HTTPCLI_HTTPCLI_H
+#ifndef GRPC_CORE_LIB_HTTP_HTTPCLI_H
+#define GRPC_CORE_LIB_HTTP_HTTPCLI_H
 
 #include <stddef.h>
 
 #include <grpc/support/time.h>
 
-#include "src/core/iomgr/endpoint.h"
-#include "src/core/iomgr/iomgr_internal.h"
-#include "src/core/iomgr/pollset_set.h"
+#include "src/core/lib/http/parser.h"
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
+#include "src/core/lib/iomgr/pollset_set.h"
 
 /* User agent this library reports */
 #define GRPC_HTTPCLI_USER_AGENT "grpc-httpcli/0.0"
-/* Maximum length of a header string of the form 'Key: Value\r\n' */
-#define GRPC_HTTPCLI_MAX_HEADER_LENGTH 4096
-
-/* A single header to be passed in a request */
-typedef struct grpc_httpcli_header {
-  char *key;
-  char *value;
-} grpc_httpcli_header;
 
 /* Tracks in-progress http requests
    TODO(ctiller): allow caching and capturing multiple requests for the
@@ -77,33 +70,21 @@ typedef struct grpc_httpcli_request {
   char *host;
   /* The host to verify in the SSL handshake (or NULL) */
   char *ssl_host_override;
-  /* The path of the resource to fetch */
-  char *path;
-  /* Additional headers: count and key/values; the following are supplied
-     automatically and MUST NOT be set here:
+  /* The main part of the request
+     The following headers are supplied automatically and MUST NOT be set here:
      Host, Connection, User-Agent */
-  size_t hdr_count;
-  grpc_httpcli_header *hdrs;
+  grpc_http_request http;
   /* handshaker to use ssl for the request */
   const grpc_httpcli_handshaker *handshaker;
 } grpc_httpcli_request;
 
-/* A response */
-typedef struct grpc_httpcli_response {
-  /* HTTP status code */
-  int status;
-  /* Headers: count and key/values */
-  size_t hdr_count;
-  grpc_httpcli_header *hdrs;
-  /* Body: length and contents; contents are NOT null-terminated */
-  size_t body_length;
-  char *body;
-} grpc_httpcli_response;
+/* Expose the parser response type as a httpcli response too */
+typedef struct grpc_http_response grpc_httpcli_response;
 
 /* Callback for grpc_httpcli_get and grpc_httpcli_post. */
 typedef void (*grpc_httpcli_response_cb)(grpc_exec_ctx *exec_ctx,
                                          void *user_data,
-                                         const grpc_httpcli_response *response);
+                                         const grpc_http_response *response);
 
 void grpc_httpcli_context_init(grpc_httpcli_context *context);
 void grpc_httpcli_context_destroy(grpc_httpcli_context *context);
@@ -160,4 +141,4 @@ typedef int (*grpc_httpcli_post_override)(
 void grpc_httpcli_set_override(grpc_httpcli_get_override get,
                                grpc_httpcli_post_override post);
 
-#endif /* GRPC_CORE_HTTPCLI_HTTPCLI_H */
+#endif /* GRPC_CORE_LIB_HTTP_HTTPCLI_H */
diff --git a/src/core/httpcli/httpcli_security_connector.c b/src/core/lib/http/httpcli_security_connector.c
index 156961a377..6f1630ac1f 100644
--- a/src/core/httpcli/httpcli_security_connector.c
+++ b/src/core/lib/http/httpcli_security_connector.c
@@ -31,16 +31,16 @@
  *
  */
 
-#include "src/core/httpcli/httpcli.h"
+#include "src/core/lib/http/httpcli.h"
 
 #include <string.h>
 
-#include "src/core/security/handshake.h"
-#include "src/core/support/string.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
-#include "src/core/tsi/ssl_transport_security.h"
+#include "src/core/lib/security/handshake.h"
+#include "src/core/lib/support/string.h"
+#include "src/core/lib/tsi/ssl_transport_security.h"
 
 typedef struct {
   grpc_channel_security_connector base;
diff --git a/src/core/lib/http/parser.c b/src/core/lib/http/parser.c
new file mode 100644
index 0000000000..5d4e304615
--- /dev/null
+++ b/src/core/lib/http/parser.c
@@ -0,0 +1,313 @@
+/*
+ *
+ * Copyright 2015-2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "src/core/lib/http/parser.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/useful.h>
+
+static char *buf2str(void *buffer, size_t length) {
+  char *out = gpr_malloc(length + 1);
+  memcpy(out, buffer, length);
+  out[length] = 0;
+  return out;
+}
+
+static int handle_response_line(grpc_http_parser *parser) {
+  uint8_t *beg = parser->cur_line;
+  uint8_t *cur = beg;
+  uint8_t *end = beg + parser->cur_line_length;
+
+  if (cur == end || *cur++ != 'H') goto error;
+  if (cur == end || *cur++ != 'T') goto error;
+  if (cur == end || *cur++ != 'T') goto error;
+  if (cur == end || *cur++ != 'P') goto error;
+  if (cur == end || *cur++ != '/') goto error;
+  if (cur == end || *cur++ != '1') goto error;
+  if (cur == end || *cur++ != '.') goto error;
+  if (cur == end || *cur < '0' || *cur++ > '1') goto error;
+  if (cur == end || *cur++ != ' ') goto error;
+  if (cur == end || *cur < '1' || *cur++ > '9') goto error;
+  if (cur == end || *cur < '0' || *cur++ > '9') goto error;
+  if (cur == end || *cur < '0' || *cur++ > '9') goto error;
+  parser->http.response.status =
+      (cur[-3] - '0') * 100 + (cur[-2] - '0') * 10 + (cur[-1] - '0');
+  if (cur == end || *cur++ != ' ') goto error;
+
+  /* we don't really care about the status code message */
+
+  return 1;
+
+error:
+  gpr_log(GPR_ERROR, "Failed parsing response line");
+  return 0;
+}
+
+static int handle_request_line(grpc_http_parser *parser) {
+  uint8_t *beg = parser->cur_line;
+  uint8_t *cur = beg;
+  uint8_t *end = beg + parser->cur_line_length;
+  uint8_t vers_major = 0;
+  uint8_t vers_minor = 0;
+
+  while (cur != end && *cur++ != ' ')
+    ;
+  if (cur == end) goto error;
+  parser->http.request.method = buf2str(beg, (size_t)(cur - beg - 1));
+
+  beg = cur;
+  while (cur != end && *cur++ != ' ')
+    ;
+  if (cur == end) goto error;
+  parser->http.request.path = buf2str(beg, (size_t)(cur - beg - 1));
+
+  if (cur == end || *cur++ != 'H') goto error;
+  if (cur == end || *cur++ != 'T') goto error;
+  if (cur == end || *cur++ != 'T') goto error;
+  if (cur == end || *cur++ != 'P') goto error;
+  if (cur == end || *cur++ != '/') goto error;
+  vers_major = (uint8_t)(*cur++ - '1' + 1);
+  ++cur;
+  if (cur == end) goto error;
+  vers_minor = (uint8_t)(*cur++ - '1' + 1);
+
+  if (vers_major == 1) {
+    if (vers_minor == 0) {
+      parser->http.request.version = GRPC_HTTP_HTTP10;
+    } else if (vers_minor == 1) {
+      parser->http.request.version = GRPC_HTTP_HTTP11;
+    } else {
+      goto error;
+    }
+  } else if (vers_major == 2) {
+    if (vers_minor == 0) {
+      parser->http.request.version = GRPC_HTTP_HTTP20;
+    } else {
+      goto error;
+    }
+  } else {
+    goto error;
+  }
+
+  return 1;
+
+error:
+  gpr_log(GPR_ERROR, "Failed parsing request line");
+  return 0;
+}
+
+static int handle_first_line(grpc_http_parser *parser) {
+  if (parser->cur_line[0] == 'H') {
+    parser->type = GRPC_HTTP_RESPONSE;
+    return handle_response_line(parser);
+  } else {
+    parser->type = GRPC_HTTP_REQUEST;
+    return handle_request_line(parser);
+  }
+}
+
+static int add_header(grpc_http_parser *parser) {
+  uint8_t *beg = parser->cur_line;
+  uint8_t *cur = beg;
+  uint8_t *end = beg + parser->cur_line_length;
+  size_t *hdr_count = NULL;
+  grpc_http_header **hdrs = NULL;
+  grpc_http_header hdr = {NULL, NULL};
+
+  GPR_ASSERT(cur != end);
+
+  if (*cur == ' ' || *cur == '\t') {
+    gpr_log(GPR_ERROR, "Continued header lines not supported yet");
+    goto error;
+  }
+
+  while (cur != end && *cur != ':') {
+    cur++;
+  }
+  if (cur == end) {
+    gpr_log(GPR_ERROR, "Didn't find ':' in header string");
+    goto error;
+  }
+  GPR_ASSERT(cur >= beg);
+  hdr.key = buf2str(beg, (size_t)(cur - beg));
+  cur++; /* skip : */
+
+  while (cur != end && (*cur == ' ' || *cur == '\t')) {
+    cur++;
+  }
+  GPR_ASSERT(end - cur >= 2);
+  hdr.value = buf2str(cur, (size_t)(end - cur) - 2);
+
+  if (parser->type == GRPC_HTTP_RESPONSE) {
+    hdr_count = &parser->http.response.hdr_count;
+    hdrs = &parser->http.response.hdrs;
+  } else if (parser->type == GRPC_HTTP_REQUEST) {
+    hdr_count = &parser->http.request.hdr_count;
+    hdrs = &parser->http.request.hdrs;
+  } else {
+    return 0;
+  }
+
+  if (*hdr_count == parser->hdr_capacity) {
+    parser->hdr_capacity =
+        GPR_MAX(parser->hdr_capacity + 1, parser->hdr_capacity * 3 / 2);
+    *hdrs = gpr_realloc(*hdrs, parser->hdr_capacity * sizeof(**hdrs));
+  }
+  (*hdrs)[(*hdr_count)++] = hdr;
+  return 1;
+
+error:
+  gpr_free(hdr.key);
+  gpr_free(hdr.value);
+  return 0;
+}
+
+static int finish_line(grpc_http_parser *parser) {
+  switch (parser->state) {
+    case GRPC_HTTP_FIRST_LINE:
+      if (!handle_first_line(parser)) {
+        return 0;
+      }
+      parser->state = GRPC_HTTP_HEADERS;
+      break;
+    case GRPC_HTTP_HEADERS:
+      if (parser->cur_line_length == 2) {
+        parser->state = GRPC_HTTP_BODY;
+        break;
+      }
+      if (!add_header(parser)) {
+        return 0;
+      }
+      break;
+    case GRPC_HTTP_BODY:
+      GPR_UNREACHABLE_CODE(return 0);
+  }
+
+  parser->cur_line_length = 0;
+  return 1;
+}
+
+static int addbyte_body(grpc_http_parser *parser, uint8_t byte) {
+  size_t *body_length = NULL;
+  char **body = NULL;
+
+  if (parser->type == GRPC_HTTP_RESPONSE) {
+    body_length = &parser->http.response.body_length;
+    body = &parser->http.response.body;
+  } else if (parser->type == GRPC_HTTP_REQUEST) {
+    body_length = &parser->http.request.body_length;
+    body = &parser->http.request.body;
+  } else {
+    return 0;
+  }
+
+  if (*body_length == parser->body_capacity) {
+    parser->body_capacity = GPR_MAX(8, parser->body_capacity * 3 / 2);
+    *body = gpr_realloc((void *)*body, parser->body_capacity);
+  }
+  (*body)[*body_length] = (char)byte;
+  (*body_length)++;
+
+  return 1;
+}
+
+static int addbyte(grpc_http_parser *parser, uint8_t byte) {
+  switch (parser->state) {
+    case GRPC_HTTP_FIRST_LINE:
+    case GRPC_HTTP_HEADERS:
+      if (parser->cur_line_length >= GRPC_HTTP_PARSER_MAX_HEADER_LENGTH) {
+        gpr_log(GPR_ERROR, "HTTP client max line length (%d) exceeded",
+                GRPC_HTTP_PARSER_MAX_HEADER_LENGTH);
+        return 0;
+      }
+      parser->cur_line[parser->cur_line_length] = byte;
+      parser->cur_line_length++;
+      if (parser->cur_line_length >= 2 &&
+          parser->cur_line[parser->cur_line_length - 2] == '\r' &&
+          parser->cur_line[parser->cur_line_length - 1] == '\n') {
+        return finish_line(parser);
+      } else {
+        return 1;
+      }
+      GPR_UNREACHABLE_CODE(return 0);
+    case GRPC_HTTP_BODY:
+      return addbyte_body(parser, byte);
+  }
+  GPR_UNREACHABLE_CODE(return 0);
+}
+
+void grpc_http_parser_init(grpc_http_parser *parser) {
+  memset(parser, 0, sizeof(*parser));
+  parser->state = GRPC_HTTP_FIRST_LINE;
+  parser->type = GRPC_HTTP_UNKNOWN;
+}
+
+void grpc_http_parser_destroy(grpc_http_parser *parser) {
+  size_t i;
+  if (parser->type == GRPC_HTTP_RESPONSE) {
+    gpr_free(parser->http.response.body);
+    for (i = 0; i < parser->http.response.hdr_count; i++) {
+      gpr_free(parser->http.response.hdrs[i].key);
+      gpr_free(parser->http.response.hdrs[i].value);
+    }
+    gpr_free(parser->http.response.hdrs);
+  } else if (parser->type == GRPC_HTTP_REQUEST) {
+    gpr_free(parser->http.request.body);
+    for (i = 0; i < parser->http.request.hdr_count; i++) {
+      gpr_free(parser->http.request.hdrs[i].key);
+      gpr_free(parser->http.request.hdrs[i].value);
+    }
+    gpr_free(parser->http.request.hdrs);
+    gpr_free(parser->http.request.method);
+    gpr_free(parser->http.request.path);
+  }
+}
+
+int grpc_http_parser_parse(grpc_http_parser *parser, gpr_slice slice) {
+  size_t i;
+
+  for (i = 0; i < GPR_SLICE_LENGTH(slice); i++) {
+    if (!addbyte(parser, GPR_SLICE_START_PTR(slice)[i])) {
+      return 0;
+    }
+  }
+
+  return 1;
+}
+
+int grpc_http_parser_eof(grpc_http_parser *parser) {
+  return parser->state == GRPC_HTTP_BODY;
+}
diff --git a/src/core/lib/http/parser.h b/src/core/lib/http/parser.h
new file mode 100644
index 0000000000..6a72174aa6
--- /dev/null
+++ b/src/core/lib/http/parser.h
@@ -0,0 +1,116 @@
+/*
+ *
+ * Copyright 2015-2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_HTTP_PARSER_H
+#define GRPC_CORE_LIB_HTTP_PARSER_H
+
+#include <grpc/support/port_platform.h>
+#include <grpc/support/slice.h>
+
+/* Maximum length of a header string of the form 'Key: Value\r\n' */
+#define GRPC_HTTP_PARSER_MAX_HEADER_LENGTH 4096
+
+/* A single header to be passed in a request */
+typedef struct grpc_http_header {
+  char *key;
+  char *value;
+} grpc_http_header;
+
+typedef enum {
+  GRPC_HTTP_FIRST_LINE,
+  GRPC_HTTP_HEADERS,
+  GRPC_HTTP_BODY
+} grpc_http_parser_state;
+
+typedef enum {
+  GRPC_HTTP_HTTP10,
+  GRPC_HTTP_HTTP11,
+  GRPC_HTTP_HTTP20,
+} grpc_http_version;
+
+typedef enum {
+  GRPC_HTTP_RESPONSE,
+  GRPC_HTTP_REQUEST,
+  GRPC_HTTP_UNKNOWN
+} grpc_http_type;
+
+/* A request */
+typedef struct grpc_http_request {
+  /* Method of the request (e.g. GET, POST) */
+  char *method;
+  /* The path of the resource to fetch */
+  char *path;
+  /* HTTP version to use */
+  grpc_http_version version;
+  /* Headers attached to the request */
+  size_t hdr_count;
+  grpc_http_header *hdrs;
+  /* Body: length and contents; contents are NOT null-terminated */
+  size_t body_length;
+  char *body;
+} grpc_http_request;
+
+/* A response */
+typedef struct grpc_http_response {
+  /* HTTP status code */
+  int status;
+  /* Headers: count and key/values */
+  size_t hdr_count;
+  grpc_http_header *hdrs;
+  /* Body: length and contents; contents are NOT null-terminated */
+  size_t body_length;
+  char *body;
+} grpc_http_response;
+
+typedef struct {
+  grpc_http_parser_state state;
+  grpc_http_type type;
+
+  union {
+    grpc_http_response response;
+    grpc_http_request request;
+  } http;
+  size_t body_capacity;
+  size_t hdr_capacity;
+
+  uint8_t cur_line[GRPC_HTTP_PARSER_MAX_HEADER_LENGTH];
+  size_t cur_line_length;
+} grpc_http_parser;
+
+void grpc_http_parser_init(grpc_http_parser *parser);
+void grpc_http_parser_destroy(grpc_http_parser *parser);
+
+int grpc_http_parser_parse(grpc_http_parser *parser, gpr_slice slice);
+int grpc_http_parser_eof(grpc_http_parser *parser);
+
+#endif /* GRPC_CORE_LIB_HTTP_PARSER_H */
diff --git a/src/core/iomgr/closure.c b/src/core/lib/iomgr/closure.c
index 3a96f7385f..724ebc284a 100644
--- a/src/core/iomgr/closure.c
+++ b/src/core/lib/iomgr/closure.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/iomgr/closure.h"
+#include "src/core/lib/iomgr/closure.h"
 
 #include <grpc/support/alloc.h>
 
diff --git a/src/core/iomgr/closure.h b/src/core/lib/iomgr/closure.h
index d5e1f455b9..2597cf1706 100644
--- a/src/core/iomgr/closure.h
+++ b/src/core/lib/iomgr/closure.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_IOMGR_CLOSURE_H
-#define GRPC_CORE_IOMGR_CLOSURE_H
+#ifndef GRPC_CORE_LIB_IOMGR_CLOSURE_H
+#define GRPC_CORE_LIB_IOMGR_CLOSURE_H
 
 #include <grpc/support/port_platform.h>
 #include <stdbool.h>
@@ -95,4 +95,4 @@ bool grpc_closure_list_empty(grpc_closure_list list);
 /** return the next pointer for a queued closure list */
 grpc_closure *grpc_closure_next(grpc_closure *closure);
 
-#endif /* GRPC_CORE_IOMGR_CLOSURE_H */
+#endif /* GRPC_CORE_LIB_IOMGR_CLOSURE_H */
diff --git a/src/core/iomgr/endpoint.c b/src/core/lib/iomgr/endpoint.c
index bd64707669..576b5a6e5c 100644
--- a/src/core/iomgr/endpoint.c
+++ b/src/core/lib/iomgr/endpoint.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/endpoint.h"
 
 void grpc_endpoint_read(grpc_exec_ctx* exec_ctx, grpc_endpoint* ep,
                         gpr_slice_buffer* slices, grpc_closure* cb) {
diff --git a/src/core/iomgr/endpoint.h b/src/core/lib/iomgr/endpoint.h
index 788f3ac5bc..918e705fbd 100644
--- a/src/core/iomgr/endpoint.h
+++ b/src/core/lib/iomgr/endpoint.h
@@ -31,14 +31,14 @@
  *
  */
 
-#ifndef GRPC_CORE_IOMGR_ENDPOINT_H
-#define GRPC_CORE_IOMGR_ENDPOINT_H
+#ifndef GRPC_CORE_LIB_IOMGR_ENDPOINT_H
+#define GRPC_CORE_LIB_IOMGR_ENDPOINT_H
 
-#include "src/core/iomgr/pollset.h"
-#include "src/core/iomgr/pollset_set.h"
 #include <grpc/support/slice.h>
 #include <grpc/support/slice_buffer.h>
 #include <grpc/support/time.h>
+#include "src/core/lib/iomgr/pollset.h"
+#include "src/core/lib/iomgr/pollset_set.h"
 
 /* An endpoint caps a streaming channel between two communicating processes.
    Examples may be: a tcp socket, <stdin+stdout>, or some shared memory. */
@@ -99,4 +99,4 @@ struct grpc_endpoint {
   const grpc_endpoint_vtable *vtable;
 };
 
-#endif /* GRPC_CORE_IOMGR_ENDPOINT_H */
+#endif /* GRPC_CORE_LIB_IOMGR_ENDPOINT_H */
diff --git a/src/core/iomgr/endpoint_pair.h b/src/core/lib/iomgr/endpoint_pair.h
index 59015d8ffb..bef8bb3518 100644
--- a/src/core/iomgr/endpoint_pair.h
+++ b/src/core/lib/iomgr/endpoint_pair.h
@@ -31,10 +31,10 @@
  *
  */
 
-#ifndef GRPC_CORE_IOMGR_ENDPOINT_PAIR_H
-#define GRPC_CORE_IOMGR_ENDPOINT_PAIR_H
+#ifndef GRPC_CORE_LIB_IOMGR_ENDPOINT_PAIR_H
+#define GRPC_CORE_LIB_IOMGR_ENDPOINT_PAIR_H
 
-#include "src/core/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/endpoint.h"
 
 typedef struct {
   grpc_endpoint *client;
@@ -44,4 +44,4 @@ typedef struct {
 grpc_endpoint_pair grpc_iomgr_create_endpoint_pair(const char *name,
                                                    size_t read_slice_size);
 
-#endif /* GRPC_CORE_IOMGR_ENDPOINT_PAIR_H */
+#endif /* GRPC_CORE_LIB_IOMGR_ENDPOINT_PAIR_H */
diff --git a/src/core/iomgr/endpoint_pair_posix.c b/src/core/lib/iomgr/endpoint_pair_posix.c
index 56f6f146fd..e0ce47c773 100644
--- a/src/core/iomgr/endpoint_pair_posix.c
+++ b/src/core/lib/iomgr/endpoint_pair_posix.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -35,24 +35,25 @@
 
 #ifdef GPR_POSIX_SOCKET
 
-#include "src/core/iomgr/endpoint_pair.h"
-#include "src/core/iomgr/socket_utils_posix.h"
+#include "src/core/lib/iomgr/endpoint_pair.h"
+#include "src/core/lib/iomgr/socket_utils_posix.h"
+#include "src/core/lib/iomgr/unix_sockets_posix.h"
 
 #include <errno.h>
 #include <fcntl.h>
 #include <string.h>
-#include <sys/types.h>
 #include <sys/socket.h>
+#include <sys/types.h>
 
-#include "src/core/iomgr/tcp_posix.h"
-#include "src/core/support/string.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
+#include "src/core/lib/iomgr/tcp_posix.h"
+#include "src/core/lib/support/string.h"
 
 static void create_sockets(int sv[2]) {
   int flags;
-  GPR_ASSERT(socketpair(AF_UNIX, SOCK_STREAM, 0, sv) == 0);
+  grpc_create_socketpair_if_unix(sv);
   flags = fcntl(sv[0], F_GETFL, 0);
   GPR_ASSERT(fcntl(sv[0], F_SETFL, flags | O_NONBLOCK) == 0);
   flags = fcntl(sv[1], F_GETFL, 0);
diff --git a/src/core/iomgr/endpoint_pair_windows.c b/src/core/lib/iomgr/endpoint_pair_windows.c
index db9d092dca..cba18db81f 100644
--- a/src/core/iomgr/endpoint_pair_windows.c
+++ b/src/core/lib/iomgr/endpoint_pair_windows.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -34,16 +34,16 @@
 #include <grpc/support/port_platform.h>
 
 #ifdef GPR_WINSOCK_SOCKET
-#include "src/core/iomgr/sockaddr_utils.h"
-#include "src/core/iomgr/endpoint_pair.h"
+#include "src/core/lib/iomgr/endpoint_pair.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
 
 #include <errno.h>
 #include <fcntl.h>
 #include <string.h>
 
-#include "src/core/iomgr/tcp_windows.h"
-#include "src/core/iomgr/socket_windows.h"
 #include <grpc/support/log.h>
+#include "src/core/lib/iomgr/socket_windows.h"
+#include "src/core/lib/iomgr/tcp_windows.h"
 
 static void create_sockets(SOCKET sv[2]) {
   SOCKET svr_sock = INVALID_SOCKET;
diff --git a/src/core/iomgr/ev_poll_and_epoll_posix.c b/src/core/lib/iomgr/ev_poll_and_epoll_posix.c
index fd554107bf..85e9521e1d 100644
--- a/src/core/iomgr/ev_poll_and_epoll_posix.c
+++ b/src/core/lib/iomgr/ev_poll_and_epoll_posix.c
@@ -46,7 +46,7 @@
 
 #ifdef GPR_POSIX_SOCKET
 
-#include "src/core/iomgr/ev_poll_and_epoll_posix.h"
+#include "src/core/lib/iomgr/ev_poll_and_epoll_posix.h"
 
 #include <assert.h>
 #include <errno.h>
@@ -61,10 +61,10 @@
 #include <grpc/support/tls.h>
 #include <grpc/support/useful.h>
 
-#include "src/core/iomgr/iomgr_internal.h"
-#include "src/core/iomgr/wakeup_fd_posix.h"
-#include "src/core/profiling/timers.h"
-#include "src/core/support/block_annotate.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
+#include "src/core/lib/iomgr/wakeup_fd_posix.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/support/block_annotate.h"
 
 /*******************************************************************************
  * FD declarations
@@ -329,6 +329,7 @@ static grpc_fd *alloc_fd(int fd) {
     gpr_mu_init(&r->mu);
   }
 
+  gpr_mu_lock(&r->mu);
   gpr_atm_rel_store(&r->refst, 1);
   r->shutdown = 0;
   r->read_closure = CLOSURE_NOT_READY;
@@ -341,6 +342,7 @@ static grpc_fd *alloc_fd(int fd) {
   r->on_done_closure = NULL;
   r->closed = 0;
   r->released = 0;
+  gpr_mu_unlock(&r->mu);
   return r;
 }
 
@@ -1336,8 +1338,8 @@ static void multipoll_with_poll_pollset_maybe_work_and_unlock(
 
   for (i = 2; i < pfd_count; i++) {
     grpc_fd *fd = watchers[i].fd;
-    pfds[i].events = (short)fd_begin_poll(fd, pollset, worker, POLLIN,
-                                               POLLOUT, &watchers[i]);
+    pfds[i].events = (short)fd_begin_poll(fd, pollset, worker, POLLIN, POLLOUT,
+                                          &watchers[i]);
     GRPC_FD_UNREF(fd, "multipoller_start");
   }
 
@@ -1443,9 +1445,9 @@ static void poll_become_multipoller(grpc_exec_ctx *exec_ctx,
 #include <grpc/support/log.h>
 #include <grpc/support/useful.h>
 
-#include "src/core/iomgr/ev_posix.h"
-#include "src/core/profiling/timers.h"
-#include "src/core/support/block_annotate.h"
+#include "src/core/lib/iomgr/ev_posix.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/support/block_annotate.h"
 
 static void set_ready(grpc_exec_ctx *exec_ctx, grpc_fd *fd, grpc_closure **st) {
   /* only one set_ready can be active at once (but there may be a racing
diff --git a/src/core/iomgr/ev_poll_and_epoll_posix.h b/src/core/lib/iomgr/ev_poll_and_epoll_posix.h
index aacdbdf208..4ca371f4f5 100644
--- a/src/core/iomgr/ev_poll_and_epoll_posix.h
+++ b/src/core/lib/iomgr/ev_poll_and_epoll_posix.h
@@ -34,7 +34,7 @@
 #ifndef GRPC_CORE_IOMGR_EV_POLL_AND_EPOLL_POSIX_H
 #define GRPC_CORE_IOMGR_EV_POLL_AND_EPOLL_POSIX_H
 
-#include "src/core/iomgr/ev_posix.h"
+#include "src/core/lib/iomgr/ev_posix.h"
 
 const grpc_event_engine_vtable *grpc_init_poll_and_epoll_posix(void);
 
diff --git a/src/core/iomgr/ev_poll_posix.c b/src/core/lib/iomgr/ev_poll_posix.c
index 5cc5bc3c68..69489f4b53 100644
--- a/src/core/iomgr/ev_poll_posix.c
+++ b/src/core/lib/iomgr/ev_poll_posix.c
@@ -35,7 +35,7 @@
 
 #ifdef GPR_POSIX_SOCKET
 
-#include "src/core/iomgr/ev_poll_and_epoll_posix.h"
+#include "src/core/lib/iomgr/ev_poll_posix.h"
 
 #include <assert.h>
 #include <errno.h>
@@ -50,10 +50,10 @@
 #include <grpc/support/tls.h>
 #include <grpc/support/useful.h>
 
-#include "src/core/iomgr/iomgr_internal.h"
-#include "src/core/iomgr/wakeup_fd_posix.h"
-#include "src/core/profiling/timers.h"
-#include "src/core/support/block_annotate.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
+#include "src/core/lib/iomgr/wakeup_fd_posix.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/support/block_annotate.h"
 
 /*******************************************************************************
  * FD declarations
@@ -893,7 +893,7 @@ static void pollset_work(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
       for (i = 2; i < pfd_count; i++) {
         grpc_fd *fd = watchers[i].fd;
         pfds[i].events = (short)fd_begin_poll(fd, pollset, &worker, POLLIN,
-                                                   POLLOUT, &watchers[i]);
+                                              POLLOUT, &watchers[i]);
         GRPC_FD_UNREF(fd, "multipoller_start");
       }
 
diff --git a/src/core/iomgr/ev_poll_posix.h b/src/core/lib/iomgr/ev_poll_posix.h
index 39dbc16442..6acf50db08 100644
--- a/src/core/iomgr/ev_poll_posix.h
+++ b/src/core/lib/iomgr/ev_poll_posix.h
@@ -34,7 +34,7 @@
 #ifndef GRPC_INTERNAL_CORE_IOMGR_EV_POLL_POSIX_H
 #define GRPC_INTERNAL_CORE_IOMGR_EV_POLL_POSIX_H
 
-#include "src/core/iomgr/ev_posix.h"
+#include "src/core/lib/iomgr/ev_posix.h"
 
 const grpc_event_engine_vtable *grpc_init_poll_posix(void);
 
diff --git a/src/core/iomgr/ev_posix.c b/src/core/lib/iomgr/ev_posix.c
index 0c0c9be9ad..c8da5b1347 100644
--- a/src/core/iomgr/ev_posix.c
+++ b/src/core/lib/iomgr/ev_posix.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/iomgr/ev_posix.h"
+#include "src/core/lib/iomgr/ev_posix.h"
 
 #include <string.h>
 
@@ -40,9 +40,9 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/useful.h>
 
-#include "src/core/iomgr/ev_poll_and_epoll_posix.h"
-#include "src/core/iomgr/ev_poll_posix.h"
-#include "src/core/support/env.h"
+#include "src/core/lib/iomgr/ev_poll_and_epoll_posix.h"
+#include "src/core/lib/iomgr/ev_poll_posix.h"
+#include "src/core/lib/support/env.h"
 
 /** Default poll() function - a pointer so that it can be overridden by some
  *  tests */
@@ -132,7 +132,10 @@ void grpc_event_engine_init(void) {
   }
 }
 
-void grpc_event_engine_shutdown(void) { g_event_engine->shutdown_engine(); g_event_engine = NULL; }
+void grpc_event_engine_shutdown(void) {
+  g_event_engine->shutdown_engine();
+  g_event_engine = NULL;
+}
 
 grpc_fd *grpc_fd_create(int fd, const char *name) {
   return g_event_engine->fd_create(fd, name);
diff --git a/src/core/iomgr/ev_posix.h b/src/core/lib/iomgr/ev_posix.h
index a7c23d5aa6..8c909f1a3f 100644
--- a/src/core/iomgr/ev_posix.h
+++ b/src/core/lib/iomgr/ev_posix.h
@@ -36,10 +36,10 @@
 
 #include <poll.h>
 
-#include "src/core/iomgr/exec_ctx.h"
-#include "src/core/iomgr/pollset.h"
-#include "src/core/iomgr/pollset_set.h"
-#include "src/core/iomgr/wakeup_fd_posix.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/pollset.h"
+#include "src/core/lib/iomgr/pollset_set.h"
+#include "src/core/lib/iomgr/wakeup_fd_posix.h"
 
 typedef struct grpc_fd grpc_fd;
 
diff --git a/src/core/iomgr/exec_ctx.c b/src/core/lib/iomgr/exec_ctx.c
index 893fe4515c..1ed6da623a 100644
--- a/src/core/iomgr/exec_ctx.c
+++ b/src/core/lib/iomgr/exec_ctx.c
@@ -31,13 +31,13 @@
  *
  */
 
-#include "src/core/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
 
 #include <grpc/support/log.h>
 #include <grpc/support/sync.h>
 #include <grpc/support/thd.h>
 
-#include "src/core/profiling/timers.h"
+#include "src/core/lib/profiling/timers.h"
 
 #ifndef GRPC_EXECUTION_CONTEXT_SANITIZER
 bool grpc_exec_ctx_flush(grpc_exec_ctx *exec_ctx) {
diff --git a/src/core/iomgr/exec_ctx.h b/src/core/lib/iomgr/exec_ctx.h
index 07b54a0ab8..e62ea2dedf 100644
--- a/src/core/iomgr/exec_ctx.h
+++ b/src/core/lib/iomgr/exec_ctx.h
@@ -31,10 +31,10 @@
  *
  */
 
-#ifndef GRPC_CORE_IOMGR_EXEC_CTX_H
-#define GRPC_CORE_IOMGR_EXEC_CTX_H
+#ifndef GRPC_CORE_LIB_IOMGR_EXEC_CTX_H
+#define GRPC_CORE_LIB_IOMGR_EXEC_CTX_H
 
-#include "src/core/iomgr/closure.h"
+#include "src/core/lib/iomgr/closure.h"
 
 /* #define GRPC_EXECUTION_CONTEXT_SANITIZER 1 */
 
@@ -95,4 +95,4 @@ void grpc_exec_ctx_enqueue_list(grpc_exec_ctx *exec_ctx,
 void grpc_exec_ctx_global_init(void);
 void grpc_exec_ctx_global_shutdown(void);
 
-#endif /* GRPC_CORE_IOMGR_EXEC_CTX_H */
+#endif /* GRPC_CORE_LIB_IOMGR_EXEC_CTX_H */
diff --git a/src/core/iomgr/executor.c b/src/core/lib/iomgr/executor.c
index f22d8f30ac..42a9db3cbb 100644
--- a/src/core/iomgr/executor.c
+++ b/src/core/lib/iomgr/executor.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/iomgr/executor.h"
+#include "src/core/lib/iomgr/executor.h"
 
 #include <string.h>
 
@@ -39,7 +39,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/sync.h>
 #include <grpc/support/thd.h>
-#include "src/core/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
 
 typedef struct grpc_executor_data {
   int busy;          /**< is the thread currently running? */
diff --git a/src/core/iomgr/executor.h b/src/core/lib/iomgr/executor.h
index f66b3560e3..f1871416a0 100644
--- a/src/core/iomgr/executor.h
+++ b/src/core/lib/iomgr/executor.h
@@ -31,10 +31,10 @@
  *
  */
 
-#ifndef GRPC_CORE_IOMGR_EXECUTOR_H
-#define GRPC_CORE_IOMGR_EXECUTOR_H
+#ifndef GRPC_CORE_LIB_IOMGR_EXECUTOR_H
+#define GRPC_CORE_LIB_IOMGR_EXECUTOR_H
 
-#include "src/core/iomgr/closure.h"
+#include "src/core/lib/iomgr/closure.h"
 
 /** Initialize the global executor.
  *
@@ -50,4 +50,4 @@ void grpc_executor_enqueue(grpc_closure *closure, bool success);
 /** Shutdown the executor, running all pending work as part of the call */
 void grpc_executor_shutdown();
 
-#endif /* GRPC_CORE_IOMGR_EXECUTOR_H */
+#endif /* GRPC_CORE_LIB_IOMGR_EXECUTOR_H */
diff --git a/src/core/iomgr/iocp_windows.c b/src/core/lib/iomgr/iocp_windows.c
index fa87e5246b..682a32c0da 100644
--- a/src/core/iomgr/iocp_windows.c
+++ b/src/core/lib/iomgr/iocp_windows.c
@@ -37,15 +37,15 @@
 
 #include <winsock2.h>
 
+#include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/log_win32.h>
-#include <grpc/support/alloc.h>
 #include <grpc/support/thd.h>
 
-#include "src/core/iomgr/timer.h"
-#include "src/core/iomgr/iocp_windows.h"
-#include "src/core/iomgr/iomgr_internal.h"
-#include "src/core/iomgr/socket_windows.h"
+#include "src/core/lib/iomgr/iocp_windows.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
+#include "src/core/lib/iomgr/socket_windows.h"
+#include "src/core/lib/iomgr/timer.h"
 
 static ULONG g_iocp_kick_token;
 static OVERLAPPED g_iocp_custom_overlap;
diff --git a/src/core/iomgr/iocp_windows.h b/src/core/lib/iomgr/iocp_windows.h
index 570b8925aa..856c837fb4 100644
--- a/src/core/iomgr/iocp_windows.h
+++ b/src/core/lib/iomgr/iocp_windows.h
@@ -31,12 +31,12 @@
  *
  */
 
-#ifndef GRPC_CORE_IOMGR_IOCP_WINDOWS_H
-#define GRPC_CORE_IOMGR_IOCP_WINDOWS_H
+#ifndef GRPC_CORE_LIB_IOMGR_IOCP_WINDOWS_H
+#define GRPC_CORE_LIB_IOMGR_IOCP_WINDOWS_H
 
 #include <grpc/support/sync.h>
 
-#include "src/core/iomgr/socket_windows.h"
+#include "src/core/lib/iomgr/socket_windows.h"
 
 typedef enum {
   GRPC_IOCP_WORK_WORK,
@@ -60,4 +60,4 @@ void grpc_socket_notify_on_read(grpc_exec_ctx *exec_ctx,
                                 grpc_winsocket *winsocket,
                                 grpc_closure *closure);
 
-#endif /* GRPC_CORE_IOMGR_IOCP_WINDOWS_H */
+#endif /* GRPC_CORE_LIB_IOMGR_IOCP_WINDOWS_H */
diff --git a/src/core/iomgr/iomgr.c b/src/core/lib/iomgr/iomgr.c
index f009a6d32c..e74a7c29df 100644
--- a/src/core/iomgr/iomgr.c
+++ b/src/core/lib/iomgr/iomgr.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/iomgr/iomgr.h"
+#include "src/core/lib/iomgr/iomgr.h"
 
 #include <stdlib.h>
 #include <string.h>
@@ -43,11 +43,11 @@
 #include <grpc/support/thd.h>
 #include <grpc/support/useful.h>
 
-#include "src/core/iomgr/exec_ctx.h"
-#include "src/core/iomgr/iomgr_internal.h"
-#include "src/core/iomgr/timer.h"
-#include "src/core/support/env.h"
-#include "src/core/support/string.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/support/env.h"
+#include "src/core/lib/support/string.h"
 
 static gpr_mu g_mu;
 static gpr_cv g_rcv;
diff --git a/src/core/iomgr/iomgr.h b/src/core/lib/iomgr/iomgr.h
index e1237a4533..babf0a85b7 100644
--- a/src/core/iomgr/iomgr.h
+++ b/src/core/lib/iomgr/iomgr.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_IOMGR_IOMGR_H
-#define GRPC_CORE_IOMGR_IOMGR_H
+#ifndef GRPC_CORE_LIB_IOMGR_IOMGR_H
+#define GRPC_CORE_LIB_IOMGR_IOMGR_H
 
 /** Initializes the iomgr. */
 void grpc_iomgr_init(void);
@@ -40,4 +40,4 @@ void grpc_iomgr_init(void);
 /** Signals the intention to shutdown the iomgr. */
 void grpc_iomgr_shutdown(void);
 
-#endif /* GRPC_CORE_IOMGR_IOMGR_H */
+#endif /* GRPC_CORE_LIB_IOMGR_IOMGR_H */
diff --git a/src/core/iomgr/iomgr_internal.h b/src/core/lib/iomgr/iomgr_internal.h
index 733893ef2e..404f402c9a 100644
--- a/src/core/iomgr/iomgr_internal.h
+++ b/src/core/lib/iomgr/iomgr_internal.h
@@ -31,12 +31,12 @@
  *
  */
 
-#ifndef GRPC_CORE_IOMGR_IOMGR_INTERNAL_H
-#define GRPC_CORE_IOMGR_IOMGR_INTERNAL_H
+#ifndef GRPC_CORE_LIB_IOMGR_IOMGR_INTERNAL_H
+#define GRPC_CORE_LIB_IOMGR_IOMGR_INTERNAL_H
 
 #include <stdbool.h>
 
-#include "src/core/iomgr/iomgr.h"
+#include "src/core/lib/iomgr/iomgr.h"
 
 typedef struct grpc_iomgr_object {
   char *name;
@@ -55,4 +55,4 @@ void grpc_iomgr_platform_shutdown(void);
 
 bool grpc_iomgr_abort_on_leaks(void);
 
-#endif /* GRPC_CORE_IOMGR_IOMGR_INTERNAL_H */
+#endif /* GRPC_CORE_LIB_IOMGR_IOMGR_INTERNAL_H */
diff --git a/src/core/iomgr/iomgr_posix.c b/src/core/lib/iomgr/iomgr_posix.c
index e56f415493..84673ce78c 100644
--- a/src/core/iomgr/iomgr_posix.c
+++ b/src/core/lib/iomgr/iomgr_posix.c
@@ -35,11 +35,10 @@
 
 #ifdef GPR_POSIX_SOCKET
 
-#include "src/core/debug/trace.h"
-#include "src/core/iomgr/ev_posix.h"
-#include "src/core/iomgr/iomgr_posix.h"
-#include "src/core/iomgr/tcp_posix.h"
-#include "src/core/iomgr/wakeup_fd_posix.h"
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/iomgr/ev_posix.h"
+#include "src/core/lib/iomgr/iomgr_posix.h"
+#include "src/core/lib/iomgr/tcp_posix.h"
 
 void grpc_iomgr_platform_init(void) {
   grpc_wakeup_fd_global_init();
@@ -49,6 +48,9 @@ void grpc_iomgr_platform_init(void) {
 
 void grpc_iomgr_platform_flush(void) {}
 
-void grpc_iomgr_platform_shutdown(void) { grpc_event_engine_shutdown(); grpc_wakeup_fd_global_destroy(); }
+void grpc_iomgr_platform_shutdown(void) {
+  grpc_event_engine_shutdown();
+  grpc_wakeup_fd_global_destroy();
+}
 
 #endif /* GRPC_POSIX_SOCKET */
diff --git a/src/core/iomgr/iomgr_posix.h b/src/core/lib/iomgr/iomgr_posix.h
index 698fb6aee7..6a8996e403 100644
--- a/src/core/iomgr/iomgr_posix.h
+++ b/src/core/lib/iomgr/iomgr_posix.h
@@ -31,9 +31,9 @@
  *
  */
 
-#ifndef GRPC_CORE_IOMGR_IOMGR_POSIX_H
-#define GRPC_CORE_IOMGR_IOMGR_POSIX_H
+#ifndef GRPC_CORE_LIB_IOMGR_IOMGR_POSIX_H
+#define GRPC_CORE_LIB_IOMGR_IOMGR_POSIX_H
 
-#include "src/core/iomgr/iomgr_internal.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
 
-#endif /* GRPC_CORE_IOMGR_IOMGR_POSIX_H */
+#endif /* GRPC_CORE_LIB_IOMGR_IOMGR_POSIX_H */
diff --git a/src/core/iomgr/iomgr_windows.c b/src/core/lib/iomgr/iomgr_windows.c
index 14775516bb..af7e616394 100644
--- a/src/core/iomgr/iomgr_windows.c
+++ b/src/core/lib/iomgr/iomgr_windows.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -35,13 +35,13 @@
 
 #ifdef GPR_WINSOCK_SOCKET
 
-#include "src/core/iomgr/sockaddr_win32.h"
+#include "src/core/lib/iomgr/sockaddr_win32.h"
 
 #include <grpc/support/log.h>
 
-#include "src/core/iomgr/socket_windows.h"
-#include "src/core/iomgr/iocp_windows.h"
-#include "src/core/iomgr/iomgr.h"
+#include "src/core/lib/iomgr/iocp_windows.h"
+#include "src/core/lib/iomgr/iomgr.h"
+#include "src/core/lib/iomgr/socket_windows.h"
 
 /* Windows' io manager is going to be fully designed using IO completion
    ports. All of what we're doing here is basically make sure that
diff --git a/src/core/iomgr/pollset.h b/src/core/lib/iomgr/pollset.h
index 9500b1a73a..6156124862 100644
--- a/src/core/iomgr/pollset.h
+++ b/src/core/lib/iomgr/pollset.h
@@ -31,14 +31,14 @@
  *
  */
 
-#ifndef GRPC_CORE_IOMGR_POLLSET_H
-#define GRPC_CORE_IOMGR_POLLSET_H
+#ifndef GRPC_CORE_LIB_IOMGR_POLLSET_H
+#define GRPC_CORE_LIB_IOMGR_POLLSET_H
 
 #include <grpc/support/port_platform.h>
 #include <grpc/support/sync.h>
 #include <grpc/support/time.h>
 
-#include "src/core/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
 
 #define GRPC_POLLSET_KICK_BROADCAST ((grpc_pollset_worker *)1)
 
@@ -91,4 +91,4 @@ void grpc_pollset_work(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
 void grpc_pollset_kick(grpc_pollset *pollset,
                        grpc_pollset_worker *specific_worker);
 
-#endif /* GRPC_CORE_IOMGR_POLLSET_H */
+#endif /* GRPC_CORE_LIB_IOMGR_POLLSET_H */
diff --git a/src/core/iomgr/pollset_set.h b/src/core/lib/iomgr/pollset_set.h
index 204c625933..fb29d692d7 100644
--- a/src/core/iomgr/pollset_set.h
+++ b/src/core/lib/iomgr/pollset_set.h
@@ -31,10 +31,10 @@
  *
  */
 
-#ifndef GRPC_CORE_IOMGR_POLLSET_SET_H
-#define GRPC_CORE_IOMGR_POLLSET_SET_H
+#ifndef GRPC_CORE_LIB_IOMGR_POLLSET_SET_H
+#define GRPC_CORE_LIB_IOMGR_POLLSET_SET_H
 
-#include "src/core/iomgr/pollset.h"
+#include "src/core/lib/iomgr/pollset.h"
 
 /* A grpc_pollset_set is a set of pollsets that are interested in an
    action. Adding a pollset to a pollset_set automatically adds any
@@ -58,4 +58,4 @@ void grpc_pollset_set_del_pollset_set(grpc_exec_ctx *exec_ctx,
                                       grpc_pollset_set *bag,
                                       grpc_pollset_set *item);
 
-#endif /* GRPC_CORE_IOMGR_POLLSET_SET_H */
+#endif /* GRPC_CORE_LIB_IOMGR_POLLSET_SET_H */
diff --git a/src/core/iomgr/pollset_set_windows.c b/src/core/lib/iomgr/pollset_set_windows.c
index 3b8eca28e6..0b14e446ae 100644
--- a/src/core/iomgr/pollset_set_windows.c
+++ b/src/core/lib/iomgr/pollset_set_windows.c
@@ -35,7 +35,7 @@
 
 #ifdef GPR_WINSOCK_SOCKET
 
-#include "src/core/iomgr/pollset_set_windows.h"
+#include "src/core/lib/iomgr/pollset_set_windows.h"
 
 grpc_pollset_set* grpc_pollset_set_create(pollset_set) { return NULL; }
 
diff --git a/src/core/iomgr/pollset_set_windows.h b/src/core/lib/iomgr/pollset_set_windows.h
index 0f040fef82..7c2cea23de 100644
--- a/src/core/iomgr/pollset_set_windows.h
+++ b/src/core/lib/iomgr/pollset_set_windows.h
@@ -31,9 +31,9 @@
  *
  */
 
-#ifndef GRPC_CORE_IOMGR_POLLSET_SET_WINDOWS_H
-#define GRPC_CORE_IOMGR_POLLSET_SET_WINDOWS_H
+#ifndef GRPC_CORE_LIB_IOMGR_POLLSET_SET_WINDOWS_H
+#define GRPC_CORE_LIB_IOMGR_POLLSET_SET_WINDOWS_H
 
-#include "src/core/iomgr/pollset_set.h"
+#include "src/core/lib/iomgr/pollset_set.h"
 
-#endif /* GRPC_CORE_IOMGR_POLLSET_SET_WINDOWS_H */
+#endif /* GRPC_CORE_LIB_IOMGR_POLLSET_SET_WINDOWS_H */
diff --git a/src/core/iomgr/pollset_windows.c b/src/core/lib/iomgr/pollset_windows.c
index c7f30f435f..6b339127a8 100644
--- a/src/core/iomgr/pollset_windows.c
+++ b/src/core/lib/iomgr/pollset_windows.c
@@ -38,10 +38,10 @@
 #include <grpc/support/log.h>
 #include <grpc/support/thd.h>
 
-#include "src/core/iomgr/iomgr_internal.h"
-#include "src/core/iomgr/iocp_windows.h"
-#include "src/core/iomgr/pollset.h"
-#include "src/core/iomgr/pollset_windows.h"
+#include "src/core/lib/iomgr/iocp_windows.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
+#include "src/core/lib/iomgr/pollset.h"
+#include "src/core/lib/iomgr/pollset_windows.h"
 
 gpr_mu grpc_polling_mu;
 static grpc_pollset_worker *g_active_poller;
diff --git a/src/core/iomgr/pollset_windows.h b/src/core/lib/iomgr/pollset_windows.h
index f1d1585922..fa9553ffea 100644
--- a/src/core/iomgr/pollset_windows.h
+++ b/src/core/lib/iomgr/pollset_windows.h
@@ -31,12 +31,12 @@
  *
  */
 
-#ifndef GRPC_CORE_IOMGR_POLLSET_WINDOWS_H
-#define GRPC_CORE_IOMGR_POLLSET_WINDOWS_H
+#ifndef GRPC_CORE_LIB_IOMGR_POLLSET_WINDOWS_H
+#define GRPC_CORE_LIB_IOMGR_POLLSET_WINDOWS_H
 
 #include <grpc/support/sync.h>
 
-#include "src/core/iomgr/socket_windows.h"
+#include "src/core/lib/iomgr/socket_windows.h"
 
 /* There isn't really any such thing as a pollset under Windows, due to the
    nature of the IO completion ports. A Windows "pollset" is merely a mutex
@@ -72,4 +72,4 @@ struct grpc_pollset {
   grpc_closure *on_shutdown;
 };
 
-#endif /* GRPC_CORE_IOMGR_POLLSET_WINDOWS_H */
+#endif /* GRPC_CORE_LIB_IOMGR_POLLSET_WINDOWS_H */
diff --git a/src/core/iomgr/resolve_address.h b/src/core/lib/iomgr/resolve_address.h
index aa0d7d194b..f748288685 100644
--- a/src/core/iomgr/resolve_address.h
+++ b/src/core/lib/iomgr/resolve_address.h
@@ -31,12 +31,12 @@
  *
  */
 
-#ifndef GRPC_CORE_IOMGR_RESOLVE_ADDRESS_H
-#define GRPC_CORE_IOMGR_RESOLVE_ADDRESS_H
+#ifndef GRPC_CORE_LIB_IOMGR_RESOLVE_ADDRESS_H
+#define GRPC_CORE_LIB_IOMGR_RESOLVE_ADDRESS_H
 
 #include <stddef.h>
-#include "src/core/iomgr/exec_ctx.h"
-#include "src/core/iomgr/iomgr.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/iomgr.h"
 
 #define GRPC_MAX_SOCKADDR_SIZE 128
 
@@ -69,4 +69,4 @@ void grpc_resolved_addresses_destroy(grpc_resolved_addresses *addresses);
 extern grpc_resolved_addresses *(*grpc_blocking_resolve_address)(
     const char *name, const char *default_port);
 
-#endif /* GRPC_CORE_IOMGR_RESOLVE_ADDRESS_H */
+#endif /* GRPC_CORE_LIB_IOMGR_RESOLVE_ADDRESS_H */
diff --git a/src/core/iomgr/resolve_address_posix.c b/src/core/lib/iomgr/resolve_address_posix.c
index a6c9893f23..ebecb39c16 100644
--- a/src/core/iomgr/resolve_address_posix.c
+++ b/src/core/lib/iomgr/resolve_address_posix.c
@@ -34,12 +34,11 @@
 #include <grpc/support/port_platform.h>
 #ifdef GPR_POSIX_SOCKET
 
-#include "src/core/iomgr/resolve_address.h"
-#include "src/core/iomgr/sockaddr.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/iomgr/sockaddr.h"
 
 #include <string.h>
 #include <sys/types.h>
-#include <sys/un.h>
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/host_port.h>
@@ -48,11 +47,12 @@
 #include <grpc/support/thd.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
-#include "src/core/iomgr/executor.h"
-#include "src/core/iomgr/iomgr_internal.h"
-#include "src/core/iomgr/sockaddr_utils.h"
-#include "src/core/support/block_annotate.h"
-#include "src/core/support/string.h"
+#include "src/core/lib/iomgr/executor.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/iomgr/unix_sockets_posix.h"
+#include "src/core/lib/support/block_annotate.h"
+#include "src/core/lib/support/string.h"
 
 typedef struct {
   char *name;
@@ -71,18 +71,10 @@ static grpc_resolved_addresses *blocking_resolve_address_impl(
   int s;
   size_t i;
   grpc_resolved_addresses *addrs = NULL;
-  struct sockaddr_un *un;
 
   if (name[0] == 'u' && name[1] == 'n' && name[2] == 'i' && name[3] == 'x' &&
       name[4] == ':' && name[5] != 0) {
-    addrs = gpr_malloc(sizeof(grpc_resolved_addresses));
-    addrs->naddrs = 1;
-    addrs->addrs = gpr_malloc(sizeof(grpc_resolved_address));
-    un = (struct sockaddr_un *)addrs->addrs->addr;
-    un->sun_family = AF_UNIX;
-    strcpy(un->sun_path, name + 5);
-    addrs->addrs->len = strlen(un->sun_path) + sizeof(un->sun_family) + 1;
-    return addrs;
+    return grpc_resolve_unix_domain_address(name + 5);
   }
 
   /* parse name, splitting it into host and port parts */
diff --git a/src/core/iomgr/resolve_address_windows.c b/src/core/lib/iomgr/resolve_address_windows.c
index 472e797163..bde1f1b7f7 100644
--- a/src/core/iomgr/resolve_address_windows.c
+++ b/src/core/lib/iomgr/resolve_address_windows.c
@@ -34,8 +34,8 @@
 #include <grpc/support/port_platform.h>
 #ifdef GPR_WINSOCK_SOCKET
 
-#include "src/core/iomgr/resolve_address.h"
-#include "src/core/iomgr/sockaddr.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/iomgr/sockaddr.h"
 
 #include <string.h>
 #include <sys/types.h>
@@ -47,11 +47,11 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/thd.h>
 #include <grpc/support/time.h>
-#include "src/core/iomgr/executor.h"
-#include "src/core/iomgr/iomgr_internal.h"
-#include "src/core/iomgr/sockaddr_utils.h"
-#include "src/core/support/block_annotate.h"
-#include "src/core/support/string.h"
+#include "src/core/lib/iomgr/executor.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/support/block_annotate.h"
+#include "src/core/lib/support/string.h"
 
 typedef struct {
   char *name;
diff --git a/src/core/iomgr/sockaddr.h b/src/core/lib/iomgr/sockaddr.h
index 68241bdd55..66a930ee6a 100644
--- a/src/core/iomgr/sockaddr.h
+++ b/src/core/lib/iomgr/sockaddr.h
@@ -31,17 +31,17 @@
  *
  */
 
-#ifndef GRPC_CORE_IOMGR_SOCKADDR_H
-#define GRPC_CORE_IOMGR_SOCKADDR_H
+#ifndef GRPC_CORE_LIB_IOMGR_SOCKADDR_H
+#define GRPC_CORE_LIB_IOMGR_SOCKADDR_H
 
 #include <grpc/support/port_platform.h>
 
 #ifdef GPR_WIN32
-#include "src/core/iomgr/sockaddr_win32.h"
+#include "src/core/lib/iomgr/sockaddr_win32.h"
 #endif
 
 #ifdef GPR_POSIX_SOCKETADDR
-#include "src/core/iomgr/sockaddr_posix.h"
+#include "src/core/lib/iomgr/sockaddr_posix.h"
 #endif
 
-#endif /* GRPC_CORE_IOMGR_SOCKADDR_H */
+#endif /* GRPC_CORE_LIB_IOMGR_SOCKADDR_H */
diff --git a/src/core/iomgr/sockaddr_posix.h b/src/core/lib/iomgr/sockaddr_posix.h
index e4425ed735..79a7467c5d 100644
--- a/src/core/iomgr/sockaddr_posix.h
+++ b/src/core/lib/iomgr/sockaddr_posix.h
@@ -31,14 +31,14 @@
  *
  */
 
-#ifndef GRPC_CORE_IOMGR_SOCKADDR_POSIX_H
-#define GRPC_CORE_IOMGR_SOCKADDR_POSIX_H
+#ifndef GRPC_CORE_LIB_IOMGR_SOCKADDR_POSIX_H
+#define GRPC_CORE_LIB_IOMGR_SOCKADDR_POSIX_H
 
 #include <arpa/inet.h>
+#include <netdb.h>
+#include <netinet/in.h>
 #include <sys/socket.h>
 #include <sys/types.h>
-#include <netinet/in.h>
-#include <netdb.h>
 #include <unistd.h>
 
-#endif /* GRPC_CORE_IOMGR_SOCKADDR_POSIX_H */
+#endif /* GRPC_CORE_LIB_IOMGR_SOCKADDR_POSIX_H */
diff --git a/src/core/iomgr/sockaddr_utils.c b/src/core/lib/iomgr/sockaddr_utils.c
index 61006d7a7a..127d95c618 100644
--- a/src/core/iomgr/sockaddr_utils.c
+++ b/src/core/lib/iomgr/sockaddr_utils.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,22 +31,19 @@
  *
  */
 
-#include "src/core/iomgr/sockaddr_utils.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
 
 #include <errno.h>
 #include <string.h>
 
-#ifdef GPR_POSIX_SOCKET
-#include <sys/un.h>
-#endif
-
 #include <grpc/support/alloc.h>
 #include <grpc/support/host_port.h>
 #include <grpc/support/log.h>
 #include <grpc/support/port_platform.h>
 #include <grpc/support/string_util.h>
 
-#include "src/core/support/string.h"
+#include "src/core/lib/iomgr/unix_sockets_posix.h"
+#include "src/core/lib/support/string.h"
 
 static const uint8_t kV4MappedPrefix[] = {0, 0, 0, 0, 0,    0,
                                           0, 0, 0, 0, 0xff, 0xff};
@@ -191,14 +188,9 @@ char *grpc_sockaddr_to_uri(const struct sockaddr *addr) {
       gpr_asprintf(&result, "ipv6:%s", temp);
       gpr_free(temp);
       return result;
-#ifdef GPR_POSIX_SOCKET
-    case AF_UNIX:
-      gpr_asprintf(&result, "unix:%s", ((struct sockaddr_un *)addr)->sun_path);
-      return result;
-#endif
+    default:
+      return grpc_sockaddr_to_uri_unix_if_possible(addr);
   }
-
-  return NULL;
 }
 
 int grpc_sockaddr_get_port(const struct sockaddr *addr) {
@@ -207,9 +199,10 @@ int grpc_sockaddr_get_port(const struct sockaddr *addr) {
       return ntohs(((struct sockaddr_in *)addr)->sin_port);
     case AF_INET6:
       return ntohs(((struct sockaddr_in6 *)addr)->sin6_port);
-    case AF_UNIX:
-      return 1;
     default:
+      if (grpc_is_unix_socket(addr)) {
+        return 1;
+      }
       gpr_log(GPR_ERROR, "Unknown socket family %d in grpc_sockaddr_get_port",
               addr->sa_family);
       return 0;
diff --git a/src/core/iomgr/sockaddr_utils.h b/src/core/lib/iomgr/sockaddr_utils.h
index 43dc7a45ec..20a3e3bec3 100644
--- a/src/core/iomgr/sockaddr_utils.h
+++ b/src/core/lib/iomgr/sockaddr_utils.h
@@ -31,10 +31,10 @@
  *
  */
 
-#ifndef GRPC_CORE_IOMGR_SOCKADDR_UTILS_H
-#define GRPC_CORE_IOMGR_SOCKADDR_UTILS_H
+#ifndef GRPC_CORE_LIB_IOMGR_SOCKADDR_UTILS_H
+#define GRPC_CORE_LIB_IOMGR_SOCKADDR_UTILS_H
 
-#include "src/core/iomgr/sockaddr.h"
+#include "src/core/lib/iomgr/sockaddr.h"
 
 /* Returns true if addr is an IPv4-mapped IPv6 address within the
    ::ffff:0.0.0.0/96 range, or false otherwise.
@@ -86,4 +86,4 @@ int grpc_sockaddr_to_string(char **out, const struct sockaddr *addr,
 
 char *grpc_sockaddr_to_uri(const struct sockaddr *addr);
 
-#endif /* GRPC_CORE_IOMGR_SOCKADDR_UTILS_H */
+#endif /* GRPC_CORE_LIB_IOMGR_SOCKADDR_UTILS_H */
diff --git a/src/core/iomgr/sockaddr_win32.h b/src/core/lib/iomgr/sockaddr_win32.h
index 7acb8f7f57..2dd7111240 100644
--- a/src/core/iomgr/sockaddr_win32.h
+++ b/src/core/lib/iomgr/sockaddr_win32.h
@@ -31,11 +31,13 @@
  *
  */
 
-#ifndef GRPC_CORE_IOMGR_SOCKADDR_WIN32_H
-#define GRPC_CORE_IOMGR_SOCKADDR_WIN32_H
+#ifndef GRPC_CORE_LIB_IOMGR_SOCKADDR_WIN32_H
+#define GRPC_CORE_LIB_IOMGR_SOCKADDR_WIN32_H
 
 #include <winsock2.h>
 #include <ws2tcpip.h>
+
+// must be included after the above
 #include <mswsock.h>
 
-#endif /* GRPC_CORE_IOMGR_SOCKADDR_WIN32_H */
+#endif /* GRPC_CORE_LIB_IOMGR_SOCKADDR_WIN32_H */
diff --git a/src/core/iomgr/socket_utils_common_posix.c b/src/core/lib/iomgr/socket_utils_common_posix.c
index a9af594700..9dbc2784e4 100644
--- a/src/core/iomgr/socket_utils_common_posix.c
+++ b/src/core/lib/iomgr/socket_utils_common_posix.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -35,26 +35,26 @@
 
 #ifdef GPR_POSIX_SOCKET
 
-#include "src/core/iomgr/socket_utils_posix.h"
+#include "src/core/lib/iomgr/socket_utils_posix.h"
 
 #include <arpa/inet.h>
-#include <limits.h>
+#include <errno.h>
 #include <fcntl.h>
+#include <limits.h>
 #include <netinet/in.h>
 #include <netinet/tcp.h>
 #include <stdio.h>
-#include <sys/types.h>
+#include <string.h>
 #include <sys/socket.h>
+#include <sys/types.h>
 #include <unistd.h>
-#include <string.h>
-#include <errno.h>
 
-#include "src/core/iomgr/sockaddr_utils.h"
-#include "src/core/support/string.h"
 #include <grpc/support/host_port.h>
 #include <grpc/support/log.h>
 #include <grpc/support/port_platform.h>
 #include <grpc/support/sync.h>
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/support/string.h"
 
 /* set a socket to non blocking mode */
 int grpc_set_socket_nonblocking(int fd, int non_blocking) {
diff --git a/src/core/iomgr/socket_utils_linux.c b/src/core/lib/iomgr/socket_utils_linux.c
index a87625262b..e7dfe892ca 100644
--- a/src/core/iomgr/socket_utils_linux.c
+++ b/src/core/lib/iomgr/socket_utils_linux.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -35,10 +35,10 @@
 
 #ifdef GPR_LINUX_SOCKETUTILS
 
-#include "src/core/iomgr/socket_utils_posix.h"
+#include "src/core/lib/iomgr/socket_utils_posix.h"
 
-#include <sys/types.h>
 #include <sys/socket.h>
+#include <sys/types.h>
 
 int grpc_accept4(int sockfd, struct sockaddr *addr, socklen_t *addrlen,
                  int nonblock, int cloexec) {
diff --git a/src/core/iomgr/socket_utils_posix.c b/src/core/lib/iomgr/socket_utils_posix.c
index 3c56b46744..b2fa00c5c1 100644
--- a/src/core/iomgr/socket_utils_posix.c
+++ b/src/core/lib/iomgr/socket_utils_posix.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -35,7 +35,7 @@
 
 #ifdef GPR_POSIX_SOCKETUTILS
 
-#include "src/core/iomgr/socket_utils_posix.h"
+#include "src/core/lib/iomgr/socket_utils_posix.h"
 
 #include <fcntl.h>
 #include <sys/socket.h>
diff --git a/src/core/iomgr/socket_utils_posix.h b/src/core/lib/iomgr/socket_utils_posix.h
index b01e28b6f2..063f298d72 100644
--- a/src/core/iomgr/socket_utils_posix.h
+++ b/src/core/lib/iomgr/socket_utils_posix.h
@@ -31,11 +31,11 @@
  *
  */
 
-#ifndef GRPC_CORE_IOMGR_SOCKET_UTILS_POSIX_H
-#define GRPC_CORE_IOMGR_SOCKET_UTILS_POSIX_H
+#ifndef GRPC_CORE_LIB_IOMGR_SOCKET_UTILS_POSIX_H
+#define GRPC_CORE_LIB_IOMGR_SOCKET_UTILS_POSIX_H
 
-#include <unistd.h>
 #include <sys/socket.h>
+#include <unistd.h>
 
 /* a wrapper for accept or accept4 */
 int grpc_accept4(int sockfd, struct sockaddr *addr, socklen_t *addrlen,
@@ -110,4 +110,4 @@ extern int grpc_forbid_dualstack_sockets_for_testing;
 int grpc_create_dualstack_socket(const struct sockaddr *addr, int type,
                                  int protocol, grpc_dualstack_mode *dsmode);
 
-#endif /* GRPC_CORE_IOMGR_SOCKET_UTILS_POSIX_H */
+#endif /* GRPC_CORE_LIB_IOMGR_SOCKET_UTILS_POSIX_H */
diff --git a/src/core/iomgr/socket_windows.c b/src/core/lib/iomgr/socket_windows.c
index fafb7b6622..1023a6d4f8 100644
--- a/src/core/iomgr/socket_windows.c
+++ b/src/core/lib/iomgr/socket_windows.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -36,6 +36,8 @@
 #ifdef GPR_WINSOCK_SOCKET
 
 #include <winsock2.h>
+
+// must be included after winsock2.h
 #include <mswsock.h>
 
 #include <grpc/support/alloc.h>
@@ -43,11 +45,11 @@
 #include <grpc/support/log_win32.h>
 #include <grpc/support/string_util.h>
 
-#include "src/core/iomgr/iocp_windows.h"
-#include "src/core/iomgr/iomgr_internal.h"
-#include "src/core/iomgr/pollset.h"
-#include "src/core/iomgr/pollset_windows.h"
-#include "src/core/iomgr/socket_windows.h"
+#include "src/core/lib/iomgr/iocp_windows.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
+#include "src/core/lib/iomgr/pollset.h"
+#include "src/core/lib/iomgr/pollset_windows.h"
+#include "src/core/lib/iomgr/socket_windows.h"
 
 grpc_winsocket *grpc_winsocket_create(SOCKET socket, const char *name) {
   char *final_name;
diff --git a/src/core/iomgr/socket_windows.h b/src/core/lib/iomgr/socket_windows.h
index 8e50e7a953..74447896c9 100644
--- a/src/core/iomgr/socket_windows.h
+++ b/src/core/lib/iomgr/socket_windows.h
@@ -31,17 +31,17 @@
  *
  */
 
-#ifndef GRPC_CORE_IOMGR_SOCKET_WINDOWS_H
-#define GRPC_CORE_IOMGR_SOCKET_WINDOWS_H
+#ifndef GRPC_CORE_LIB_IOMGR_SOCKET_WINDOWS_H
+#define GRPC_CORE_LIB_IOMGR_SOCKET_WINDOWS_H
 
 #include <grpc/support/port_platform.h>
 #include <winsock2.h>
 
-#include <grpc/support/sync.h>
 #include <grpc/support/atm.h>
+#include <grpc/support/sync.h>
 
-#include "src/core/iomgr/iomgr_internal.h"
-#include "src/core/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
 
 /* This holds the data for an outstanding read or write on a socket.
    The mutex to protect the concurrent access to that data is the one
@@ -108,4 +108,4 @@ void grpc_winsocket_shutdown(grpc_winsocket *socket);
 /* Destroy a socket. Should only be called if there's no pending operation. */
 void grpc_winsocket_destroy(grpc_winsocket *socket);
 
-#endif /* GRPC_CORE_IOMGR_SOCKET_WINDOWS_H */
+#endif /* GRPC_CORE_LIB_IOMGR_SOCKET_WINDOWS_H */
diff --git a/src/core/iomgr/tcp_client.h b/src/core/lib/iomgr/tcp_client.h
index 2e29833b70..6bbe26445a 100644
--- a/src/core/iomgr/tcp_client.h
+++ b/src/core/lib/iomgr/tcp_client.h
@@ -31,13 +31,13 @@
  *
  */
 
-#ifndef GRPC_CORE_IOMGR_TCP_CLIENT_H
-#define GRPC_CORE_IOMGR_TCP_CLIENT_H
+#ifndef GRPC_CORE_LIB_IOMGR_TCP_CLIENT_H
+#define GRPC_CORE_LIB_IOMGR_TCP_CLIENT_H
 
-#include "src/core/iomgr/endpoint.h"
-#include "src/core/iomgr/pollset_set.h"
-#include "src/core/iomgr/sockaddr.h"
 #include <grpc/support/time.h>
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/pollset_set.h"
+#include "src/core/lib/iomgr/sockaddr.h"
 
 /* Asynchronously connect to an address (specified as (addr, len)), and call
    cb with arg and the completed connection when done (or call cb with arg and
@@ -50,4 +50,4 @@ void grpc_tcp_client_connect(grpc_exec_ctx *exec_ctx, grpc_closure *on_connect,
                              const struct sockaddr *addr, size_t addr_len,
                              gpr_timespec deadline);
 
-#endif /* GRPC_CORE_IOMGR_TCP_CLIENT_H */
+#endif /* GRPC_CORE_LIB_IOMGR_TCP_CLIENT_H */
diff --git a/src/core/iomgr/tcp_client_posix.c b/src/core/lib/iomgr/tcp_client_posix.c
index f940eb558f..5f948d0d19 100644
--- a/src/core/iomgr/tcp_client_posix.c
+++ b/src/core/lib/iomgr/tcp_client_posix.c
@@ -35,7 +35,7 @@
 
 #ifdef GPR_POSIX_SOCKET
 
-#include "src/core/iomgr/tcp_client.h"
+#include "src/core/lib/iomgr/tcp_client.h"
 
 #include <errno.h>
 #include <netinet/in.h>
@@ -47,13 +47,14 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/time.h>
 
-#include "src/core/iomgr/ev_posix.h"
-#include "src/core/iomgr/iomgr_posix.h"
-#include "src/core/iomgr/sockaddr_utils.h"
-#include "src/core/iomgr/socket_utils_posix.h"
-#include "src/core/iomgr/tcp_posix.h"
-#include "src/core/iomgr/timer.h"
-#include "src/core/support/string.h"
+#include "src/core/lib/iomgr/ev_posix.h"
+#include "src/core/lib/iomgr/iomgr_posix.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/iomgr/socket_utils_posix.h"
+#include "src/core/lib/iomgr/tcp_posix.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/iomgr/unix_sockets_posix.h"
+#include "src/core/lib/support/string.h"
 
 extern int grpc_tcp_trace;
 
@@ -76,13 +77,12 @@ static int prepare_socket(const struct sockaddr *addr, int fd) {
   }
 
   if (!grpc_set_socket_nonblocking(fd, 1) || !grpc_set_socket_cloexec(fd, 1) ||
-      (addr->sa_family != AF_UNIX && !grpc_set_socket_low_latency(fd, 1)) ||
+      (!grpc_is_unix_socket(addr) && !grpc_set_socket_low_latency(fd, 1)) ||
       !grpc_set_socket_no_sigpipe_if_possible(fd)) {
     gpr_log(GPR_ERROR, "Unable to configure socket %d: %s", fd,
             strerror(errno));
     goto error;
   }
-
   return 1;
 
 error:
diff --git a/src/core/iomgr/tcp_client_windows.c b/src/core/lib/iomgr/tcp_client_windows.c
index 689c6f7b10..86b8d58975 100644
--- a/src/core/iomgr/tcp_client_windows.c
+++ b/src/core/lib/iomgr/tcp_client_windows.c
@@ -35,7 +35,7 @@
 
 #ifdef GPR_WINSOCK_SOCKET
 
-#include "src/core/iomgr/sockaddr_win32.h"
+#include "src/core/lib/iomgr/sockaddr_win32.h"
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
@@ -43,13 +43,13 @@
 #include <grpc/support/slice_buffer.h>
 #include <grpc/support/useful.h>
 
-#include "src/core/iomgr/timer.h"
-#include "src/core/iomgr/iocp_windows.h"
-#include "src/core/iomgr/tcp_client.h"
-#include "src/core/iomgr/tcp_windows.h"
-#include "src/core/iomgr/sockaddr.h"
-#include "src/core/iomgr/sockaddr_utils.h"
-#include "src/core/iomgr/socket_windows.h"
+#include "src/core/lib/iomgr/iocp_windows.h"
+#include "src/core/lib/iomgr/sockaddr.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/iomgr/socket_windows.h"
+#include "src/core/lib/iomgr/tcp_client.h"
+#include "src/core/lib/iomgr/tcp_windows.h"
+#include "src/core/lib/iomgr/timer.h"
 
 typedef struct {
   grpc_closure *on_done;
diff --git a/src/core/iomgr/tcp_posix.c b/src/core/lib/iomgr/tcp_posix.c
index f707e2b988..64ccaf92ff 100644
--- a/src/core/iomgr/tcp_posix.c
+++ b/src/core/lib/iomgr/tcp_posix.c
@@ -35,7 +35,7 @@
 
 #ifdef GPR_POSIX_SOCKET
 
-#include "src/core/iomgr/tcp_posix.h"
+#include "src/core/lib/iomgr/tcp_posix.h"
 
 #include <errno.h>
 #include <stdlib.h>
@@ -51,10 +51,10 @@
 #include <grpc/support/sync.h>
 #include <grpc/support/time.h>
 
-#include "src/core/debug/trace.h"
-#include "src/core/iomgr/ev_posix.h"
-#include "src/core/profiling/timers.h"
-#include "src/core/support/string.h"
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/iomgr/ev_posix.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/support/string.h"
 
 #ifdef GPR_HAVE_MSG_NOSIGNAL
 #define SENDMSG_FLAGS MSG_NOSIGNAL
@@ -296,7 +296,7 @@ static flush_result tcp_flush(grpc_tcp *tcp) {
     unwind_slice_idx = tcp->outgoing_slice_idx;
     unwind_byte_idx = tcp->outgoing_byte_idx;
     for (iov_size = 0; tcp->outgoing_slice_idx != tcp->outgoing_buffer->count &&
-                           iov_size != MAX_WRITE_IOVEC;
+                       iov_size != MAX_WRITE_IOVEC;
          iov_size++) {
       iov[iov_size].iov_base =
           GPR_SLICE_START_PTR(
@@ -445,7 +445,7 @@ static char *tcp_get_peer(grpc_endpoint *ep) {
 }
 
 static const grpc_endpoint_vtable vtable = {
-    tcp_read, tcp_write, tcp_add_to_pollset, tcp_add_to_pollset_set,
+    tcp_read,     tcp_write,   tcp_add_to_pollset, tcp_add_to_pollset_set,
     tcp_shutdown, tcp_destroy, tcp_get_peer};
 
 grpc_endpoint *grpc_tcp_create(grpc_fd *em_fd, size_t slice_size,
diff --git a/src/core/iomgr/tcp_posix.h b/src/core/lib/iomgr/tcp_posix.h
index 2dc81b0be6..c9b70aaa33 100644
--- a/src/core/iomgr/tcp_posix.h
+++ b/src/core/lib/iomgr/tcp_posix.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_IOMGR_TCP_POSIX_H
-#define GRPC_CORE_IOMGR_TCP_POSIX_H
+#ifndef GRPC_CORE_LIB_IOMGR_TCP_POSIX_H
+#define GRPC_CORE_LIB_IOMGR_TCP_POSIX_H
 /*
    Low level TCP "bottom half" implementation, for use by transports built on
    top of a TCP connection.
@@ -44,8 +44,8 @@
    otherwise specified.
 */
 
-#include "src/core/iomgr/endpoint.h"
-#include "src/core/iomgr/ev_posix.h"
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/ev_posix.h"
 
 #define GRPC_TCP_DEFAULT_READ_SLICE_SIZE 8192
 
@@ -68,4 +68,4 @@ int grpc_tcp_fd(grpc_endpoint *ep);
 void grpc_tcp_destroy_and_release_fd(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
                                      int *fd, grpc_closure *done);
 
-#endif /* GRPC_CORE_IOMGR_TCP_POSIX_H */
+#endif /* GRPC_CORE_LIB_IOMGR_TCP_POSIX_H */
diff --git a/src/core/iomgr/tcp_server.h b/src/core/lib/iomgr/tcp_server.h
index 93247e9e4e..81edb61997 100644
--- a/src/core/iomgr/tcp_server.h
+++ b/src/core/lib/iomgr/tcp_server.h
@@ -31,11 +31,11 @@
  *
  */
 
-#ifndef GRPC_CORE_IOMGR_TCP_SERVER_H
-#define GRPC_CORE_IOMGR_TCP_SERVER_H
+#ifndef GRPC_CORE_LIB_IOMGR_TCP_SERVER_H
+#define GRPC_CORE_LIB_IOMGR_TCP_SERVER_H
 
-#include "src/core/iomgr/closure.h"
-#include "src/core/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/closure.h"
+#include "src/core/lib/iomgr/endpoint.h"
 
 /* Forward decl of grpc_tcp_server */
 typedef struct grpc_tcp_server grpc_tcp_server;
@@ -100,4 +100,4 @@ void grpc_tcp_server_shutdown_starting_add(grpc_tcp_server *s,
    a call (exec_ctx!=NULL) to shutdown_complete. */
 void grpc_tcp_server_unref(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s);
 
-#endif /* GRPC_CORE_IOMGR_TCP_SERVER_H */
+#endif /* GRPC_CORE_LIB_IOMGR_TCP_SERVER_H */
diff --git a/src/core/iomgr/tcp_server_posix.c b/src/core/lib/iomgr/tcp_server_posix.c
index e8696aca1f..313ec226c9 100644
--- a/src/core/iomgr/tcp_server_posix.c
+++ b/src/core/lib/iomgr/tcp_server_posix.c
@@ -40,7 +40,7 @@
 
 #ifdef GPR_POSIX_SOCKET
 
-#include "src/core/iomgr/tcp_server.h"
+#include "src/core/lib/iomgr/tcp_server.h"
 
 #include <errno.h>
 #include <fcntl.h>
@@ -52,7 +52,6 @@
 #include <sys/socket.h>
 #include <sys/stat.h>
 #include <sys/types.h>
-#include <sys/un.h>
 #include <unistd.h>
 
 #include <grpc/support/alloc.h>
@@ -60,12 +59,12 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/sync.h>
 #include <grpc/support/time.h>
-
-#include "src/core/iomgr/resolve_address.h"
-#include "src/core/iomgr/sockaddr_utils.h"
-#include "src/core/iomgr/socket_utils_posix.h"
-#include "src/core/iomgr/tcp_posix.h"
-#include "src/core/support/string.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/iomgr/socket_utils_posix.h"
+#include "src/core/lib/iomgr/tcp_posix.h"
+#include "src/core/lib/iomgr/unix_sockets_posix.h"
+#include "src/core/lib/support/string.h"
 
 #define MIN_SAFE_ACCEPT_QUEUE_SIZE 100
 
@@ -81,7 +80,6 @@ struct grpc_tcp_listener {
   union {
     uint8_t untyped[GRPC_MAX_SOCKADDR_SIZE];
     struct sockaddr sockaddr;
-    struct sockaddr_un un;
   } addr;
   size_t addr_len;
   int port;
@@ -98,14 +96,6 @@ struct grpc_tcp_listener {
   int is_sibling;
 };
 
-static void unlink_if_unix_domain_socket(const struct sockaddr_un *un) {
-  struct stat st;
-
-  if (stat(un->sun_path, &st) == 0 && (st.st_mode & S_IFMT) == S_IFSOCK) {
-    unlink(un->sun_path);
-  }
-}
-
 /* the overall server */
 struct grpc_tcp_server {
   gpr_refcount refs;
@@ -203,9 +193,7 @@ static void deactivated_all_ports(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s) {
   if (s->head) {
     grpc_tcp_listener *sp;
     for (sp = s->head; sp; sp = sp->next) {
-      if (sp->addr.sockaddr.sa_family == AF_UNIX) {
-        unlink_if_unix_domain_socket(&sp->addr.un);
-      }
+      grpc_unlink_if_unix_domain_socket(&sp->addr.sockaddr);
       sp->destroyed_closure.cb = destroyed_port;
       sp->destroyed_closure.cb_arg = s;
       grpc_fd_orphan(exec_ctx, sp->emfd, &sp->destroyed_closure, NULL,
@@ -281,7 +269,7 @@ static int prepare_socket(int fd, const struct sockaddr *addr,
   }
 
   if (!grpc_set_socket_nonblocking(fd, 1) || !grpc_set_socket_cloexec(fd, 1) ||
-      (addr->sa_family != AF_UNIX && (!grpc_set_socket_low_latency(fd, 1) ||
+      (!grpc_is_unix_socket(addr) && (!grpc_set_socket_low_latency(fd, 1) ||
                                       !grpc_set_socket_reuse_addr(fd, 1))) ||
       !grpc_set_socket_no_sigpipe_if_possible(fd)) {
     gpr_log(GPR_ERROR, "Unable to configure socket %d: %s", fd,
@@ -451,9 +439,7 @@ int grpc_tcp_server_add_port(grpc_tcp_server *s, const void *addr,
   if (s->tail != NULL) {
     port_index = s->tail->port_index + 1;
   }
-  if (((struct sockaddr *)addr)->sa_family == AF_UNIX) {
-    unlink_if_unix_domain_socket(addr);
-  }
+  grpc_unlink_if_unix_domain_socket((struct sockaddr *)addr);
 
   /* Check if this is a wildcard port, and if so, try to keep the port the same
      as some previously created listener. */
@@ -499,7 +485,6 @@ int grpc_tcp_server_add_port(grpc_tcp_server *s, const void *addr,
     /* If we didn't get a dualstack socket, also listen on 0.0.0.0. */
     if (port == 0 && sp != NULL) {
       grpc_sockaddr_set_port((struct sockaddr *)&wild4, sp->port);
-      sp2 = sp;
     }
     addr = (struct sockaddr *)&wild4;
     addr_len = sizeof(wild4);
@@ -508,16 +493,18 @@ int grpc_tcp_server_add_port(grpc_tcp_server *s, const void *addr,
   fd = grpc_create_dualstack_socket(addr, SOCK_STREAM, 0, &dsmode);
   if (fd < 0) {
     gpr_log(GPR_ERROR, "Unable to create socket: %s", strerror(errno));
-  }
-  if (dsmode == GRPC_DSMODE_IPV4 &&
-      grpc_sockaddr_is_v4mapped(addr, &addr4_copy)) {
-    addr = (struct sockaddr *)&addr4_copy;
-    addr_len = sizeof(addr4_copy);
-  }
-  sp = add_socket_to_server(s, fd, addr, addr_len, port_index, fd_index);
-  if (sp2 != NULL && sp != NULL) {
-    sp2->sibling = sp;
-    sp->is_sibling = 1;
+  } else {
+    if (dsmode == GRPC_DSMODE_IPV4 &&
+        grpc_sockaddr_is_v4mapped(addr, &addr4_copy)) {
+      addr = (struct sockaddr *)&addr4_copy;
+      addr_len = sizeof(addr4_copy);
+    }
+    sp2 = sp;
+    sp = add_socket_to_server(s, fd, addr, addr_len, port_index, fd_index);
+    if (sp2 != NULL && sp != NULL) {
+      sp2->sibling = sp;
+      sp->is_sibling = 1;
+    }
   }
 
 done:
diff --git a/src/core/iomgr/tcp_server_windows.c b/src/core/lib/iomgr/tcp_server_windows.c
index a4abc5b974..3d6a29b2e2 100644
--- a/src/core/iomgr/tcp_server_windows.c
+++ b/src/core/lib/iomgr/tcp_server_windows.c
@@ -37,7 +37,7 @@
 
 #include <io.h>
 
-#include "src/core/iomgr/sockaddr_utils.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
@@ -46,11 +46,11 @@
 #include <grpc/support/sync.h>
 #include <grpc/support/time.h>
 
-#include "src/core/iomgr/iocp_windows.h"
-#include "src/core/iomgr/pollset_windows.h"
-#include "src/core/iomgr/socket_windows.h"
-#include "src/core/iomgr/tcp_server.h"
-#include "src/core/iomgr/tcp_windows.h"
+#include "src/core/lib/iomgr/iocp_windows.h"
+#include "src/core/lib/iomgr/pollset_windows.h"
+#include "src/core/lib/iomgr/socket_windows.h"
+#include "src/core/lib/iomgr/tcp_server.h"
+#include "src/core/lib/iomgr/tcp_windows.h"
 
 #define MIN_SAFE_ACCEPT_QUEUE_SIZE 100
 
diff --git a/src/core/iomgr/tcp_windows.c b/src/core/lib/iomgr/tcp_windows.c
index 038e4158c8..c1ce725f2c 100644
--- a/src/core/iomgr/tcp_windows.c
+++ b/src/core/lib/iomgr/tcp_windows.c
@@ -35,7 +35,7 @@
 
 #ifdef GPR_WINSOCK_SOCKET
 
-#include "src/core/iomgr/sockaddr_win32.h"
+#include "src/core/lib/iomgr/sockaddr_win32.h"
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
@@ -44,12 +44,12 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/useful.h>
 
-#include "src/core/iomgr/timer.h"
-#include "src/core/iomgr/iocp_windows.h"
-#include "src/core/iomgr/sockaddr.h"
-#include "src/core/iomgr/sockaddr_utils.h"
-#include "src/core/iomgr/socket_windows.h"
-#include "src/core/iomgr/tcp_client.h"
+#include "src/core/lib/iomgr/iocp_windows.h"
+#include "src/core/lib/iomgr/sockaddr.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/iomgr/socket_windows.h"
+#include "src/core/lib/iomgr/tcp_client.h"
+#include "src/core/lib/iomgr/timer.h"
 
 static int set_non_block(SOCKET sock) {
   int status;
@@ -146,8 +146,8 @@ static void on_read(grpc_exec_ctx *exec_ctx, void *tcpp, bool success) {
   grpc_winsocket_callback_info *info = &socket->read_info;
 
   if (success) {
-    if (socket->read_info.wsa_error != 0 && !tcp->shutting_down) {
-      if (socket->read_info.wsa_error != WSAECONNRESET) {
+    if (info->wsa_error != 0 && !tcp->shutting_down) {
+      if (info->wsa_error != WSAECONNRESET) {
         char *utf8_message = gpr_format_message(info->wsa_error);
         gpr_log(GPR_ERROR, "ReadFile overlapped error: %s", utf8_message);
         gpr_free(utf8_message);
@@ -306,7 +306,7 @@ static void win_write(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
       ok = true;
       GPR_ASSERT(bytes_sent == tcp->write_slices->length);
     } else {
-      if (socket->read_info.wsa_error != WSAECONNRESET) {
+      if (info->wsa_error != WSAECONNRESET) {
         char *utf8_message = gpr_format_message(info->wsa_error);
         gpr_log(GPR_ERROR, "WSASend error: %s", utf8_message);
         gpr_free(utf8_message);
@@ -382,9 +382,9 @@ static char *win_get_peer(grpc_endpoint *ep) {
   return gpr_strdup(tcp->peer_string);
 }
 
-static grpc_endpoint_vtable vtable = {win_read, win_write, win_add_to_pollset,
-                                      win_add_to_pollset_set, win_shutdown,
-                                      win_destroy, win_get_peer};
+static grpc_endpoint_vtable vtable = {
+    win_read,     win_write,   win_add_to_pollset, win_add_to_pollset_set,
+    win_shutdown, win_destroy, win_get_peer};
 
 grpc_endpoint *grpc_tcp_create(grpc_winsocket *socket, char *peer_string) {
   grpc_tcp *tcp = (grpc_tcp *)gpr_malloc(sizeof(grpc_tcp));
diff --git a/src/core/iomgr/tcp_windows.h b/src/core/lib/iomgr/tcp_windows.h
index 78bc13389a..7a9ebd85eb 100644
--- a/src/core/iomgr/tcp_windows.h
+++ b/src/core/lib/iomgr/tcp_windows.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_IOMGR_TCP_WINDOWS_H
-#define GRPC_CORE_IOMGR_TCP_WINDOWS_H
+#ifndef GRPC_CORE_LIB_IOMGR_TCP_WINDOWS_H
+#define GRPC_CORE_LIB_IOMGR_TCP_WINDOWS_H
 /*
    Low level TCP "bottom half" implementation, for use by transports built on
    top of a TCP connection.
@@ -44,8 +44,8 @@
    otherwise specified.
 */
 
-#include "src/core/iomgr/endpoint.h"
-#include "src/core/iomgr/socket_windows.h"
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/socket_windows.h"
 
 /* Create a tcp endpoint given a winsock handle.
  * Takes ownership of the handle.
@@ -54,4 +54,4 @@ grpc_endpoint *grpc_tcp_create(grpc_winsocket *socket, char *peer_string);
 
 int grpc_tcp_prepare_socket(SOCKET sock);
 
-#endif /* GRPC_CORE_IOMGR_TCP_WINDOWS_H */
+#endif /* GRPC_CORE_LIB_IOMGR_TCP_WINDOWS_H */
diff --git a/src/core/iomgr/time_averaged_stats.c b/src/core/lib/iomgr/time_averaged_stats.c
index e075db4373..f24d68087e 100644
--- a/src/core/iomgr/time_averaged_stats.c
+++ b/src/core/lib/iomgr/time_averaged_stats.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/iomgr/time_averaged_stats.h"
+#include "src/core/lib/iomgr/time_averaged_stats.h"
 
 void grpc_time_averaged_stats_init(grpc_time_averaged_stats* stats,
                                    double init_avg, double regress_weight,
diff --git a/src/core/iomgr/time_averaged_stats.h b/src/core/lib/iomgr/time_averaged_stats.h
index 048e244bcc..4a662e17ec 100644
--- a/src/core/iomgr/time_averaged_stats.h
+++ b/src/core/lib/iomgr/time_averaged_stats.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_IOMGR_TIME_AVERAGED_STATS_H
-#define GRPC_CORE_IOMGR_TIME_AVERAGED_STATS_H
+#ifndef GRPC_CORE_LIB_IOMGR_TIME_AVERAGED_STATS_H
+#define GRPC_CORE_LIB_IOMGR_TIME_AVERAGED_STATS_H
 
 /* This tracks a time-decaying weighted average.  It works by collecting
    batches of samples and then mixing their average into a time-decaying
@@ -85,4 +85,4 @@ void grpc_time_averaged_stats_add_sample(grpc_time_averaged_stats* stats,
    value. */
 double grpc_time_averaged_stats_update_average(grpc_time_averaged_stats* stats);
 
-#endif /* GRPC_CORE_IOMGR_TIME_AVERAGED_STATS_H */
+#endif /* GRPC_CORE_LIB_IOMGR_TIME_AVERAGED_STATS_H */
diff --git a/src/core/iomgr/timer.c b/src/core/lib/iomgr/timer.c
index f444643428..4748f9b270 100644
--- a/src/core/iomgr/timer.c
+++ b/src/core/lib/iomgr/timer.c
@@ -31,13 +31,13 @@
  *
  */
 
-#include "src/core/iomgr/timer.h"
+#include "src/core/lib/iomgr/timer.h"
 
 #include <grpc/support/log.h>
 #include <grpc/support/sync.h>
 #include <grpc/support/useful.h>
-#include "src/core/iomgr/time_averaged_stats.h"
-#include "src/core/iomgr/timer_heap.h"
+#include "src/core/lib/iomgr/time_averaged_stats.h"
+#include "src/core/lib/iomgr/timer_heap.h"
 
 #define INVALID_HEAP_INDEX 0xffffffffu
 
diff --git a/src/core/iomgr/timer.h b/src/core/lib/iomgr/timer.h
index 63505df427..54f301c5ed 100644
--- a/src/core/iomgr/timer.h
+++ b/src/core/lib/iomgr/timer.h
@@ -31,13 +31,13 @@
  *
  */
 
-#ifndef GRPC_CORE_IOMGR_TIMER_H
-#define GRPC_CORE_IOMGR_TIMER_H
+#ifndef GRPC_CORE_LIB_IOMGR_TIMER_H
+#define GRPC_CORE_LIB_IOMGR_TIMER_H
 
-#include "src/core/iomgr/iomgr.h"
-#include "src/core/iomgr/exec_ctx.h"
 #include <grpc/support/port_platform.h>
 #include <grpc/support/time.h>
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/iomgr.h"
 
 typedef struct grpc_timer {
   gpr_timespec deadline;
@@ -105,4 +105,4 @@ void grpc_timer_list_shutdown(grpc_exec_ctx *exec_ctx);
 
 void grpc_kick_poller(void);
 
-#endif /* GRPC_CORE_IOMGR_TIMER_H */
+#endif /* GRPC_CORE_LIB_IOMGR_TIMER_H */
diff --git a/src/core/iomgr/timer_heap.c b/src/core/lib/iomgr/timer_heap.c
index b5df566c45..d43b6ccf75 100644
--- a/src/core/iomgr/timer_heap.c
+++ b/src/core/lib/iomgr/timer_heap.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/iomgr/timer_heap.h"
+#include "src/core/lib/iomgr/timer_heap.h"
 
 #include <string.h>
 
diff --git a/src/core/iomgr/timer_heap.h b/src/core/lib/iomgr/timer_heap.h
index c2912ef45d..d5112cf0de 100644
--- a/src/core/iomgr/timer_heap.h
+++ b/src/core/lib/iomgr/timer_heap.h
@@ -31,10 +31,10 @@
  *
  */
 
-#ifndef GRPC_CORE_IOMGR_TIMER_HEAP_H
-#define GRPC_CORE_IOMGR_TIMER_HEAP_H
+#ifndef GRPC_CORE_LIB_IOMGR_TIMER_HEAP_H
+#define GRPC_CORE_LIB_IOMGR_TIMER_HEAP_H
 
-#include "src/core/iomgr/timer.h"
+#include "src/core/lib/iomgr/timer.h"
 
 typedef struct {
   grpc_timer **timers;
@@ -54,4 +54,4 @@ void grpc_timer_heap_pop(grpc_timer_heap *heap);
 
 int grpc_timer_heap_is_empty(grpc_timer_heap *heap);
 
-#endif /* GRPC_CORE_IOMGR_TIMER_HEAP_H */
+#endif /* GRPC_CORE_LIB_IOMGR_TIMER_HEAP_H */
diff --git a/src/core/iomgr/udp_server.c b/src/core/lib/iomgr/udp_server.c
index cb3923123f..deab40ef82 100644
--- a/src/core/iomgr/udp_server.c
+++ b/src/core/lib/iomgr/udp_server.c
@@ -41,7 +41,7 @@
 #ifdef GRPC_NEED_UDP
 #ifdef GPR_POSIX_SOCKET
 
-#include "src/core/iomgr/udp_server.h"
+#include "src/core/lib/iomgr/udp_server.h"
 
 #include <errno.h>
 #include <fcntl.h>
@@ -52,19 +52,19 @@
 #include <sys/socket.h>
 #include <sys/stat.h>
 #include <sys/types.h>
-#include <sys/un.h>
 #include <unistd.h>
 
-#include "src/core/iomgr/ev_posix.h"
-#include "src/core/iomgr/resolve_address.h"
-#include "src/core/iomgr/sockaddr_utils.h"
-#include "src/core/iomgr/socket_utils_posix.h"
-#include "src/core/support/string.h"
+#include <grpc/grpc.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
-#include <grpc/support/sync.h>
 #include <grpc/support/string_util.h>
+#include <grpc/support/sync.h>
 #include <grpc/support/time.h>
+#include "src/core/lib/iomgr/ev_posix.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/iomgr/socket_utils_posix.h"
+#include "src/core/lib/support/string.h"
 
 #define INIT_PORT_CAP 2
 
@@ -76,7 +76,6 @@ typedef struct {
   union {
     uint8_t untyped[GRPC_MAX_SOCKADDR_SIZE];
     struct sockaddr sockaddr;
-    struct sockaddr_un un;
   } addr;
   size_t addr_len;
   grpc_closure read_closure;
@@ -84,14 +83,6 @@ typedef struct {
   grpc_udp_server_read_cb read_cb;
 } server_port;
 
-static void unlink_if_unix_domain_socket(const struct sockaddr_un *un) {
-  struct stat st;
-
-  if (stat(un->sun_path, &st) == 0 && (st.st_mode & S_IFMT) == S_IFSOCK) {
-    unlink(un->sun_path);
-  }
-}
-
 /* the overall server */
 struct grpc_udp_server {
   gpr_mu mu;
@@ -175,9 +166,7 @@ static void deactivated_all_ports(grpc_exec_ctx *exec_ctx, grpc_udp_server *s) {
   if (s->nports) {
     for (i = 0; i < s->nports; i++) {
       server_port *sp = &s->ports[i];
-      if (sp->addr.sockaddr.sa_family == AF_UNIX) {
-        unlink_if_unix_domain_socket(&sp->addr.un);
-      }
+      grpc_unlink_if_unix_domain_socket(&sp->addr.sockaddr);
       sp->destroyed_closure.cb = destroyed_port;
       sp->destroyed_closure.cb_arg = s;
       grpc_fd_orphan(exec_ctx, sp->emfd, &sp->destroyed_closure, NULL,
@@ -335,9 +324,7 @@ int grpc_udp_server_add_port(grpc_udp_server *s, const void *addr,
   socklen_t sockname_len;
   int port;
 
-  if (((struct sockaddr *)addr)->sa_family == AF_UNIX) {
-    unlink_if_unix_domain_socket(addr);
-  }
+  grpc_unlink_if_unix_domain_socket((struct sockaddr *)addr);
 
   /* Check if this is a wildcard port, and if so, try to keep the port the same
      as some previously created listener. */
diff --git a/src/core/iomgr/udp_server.h b/src/core/lib/iomgr/udp_server.h
index e47f9a200a..f3fb0c59f0 100644
--- a/src/core/iomgr/udp_server.h
+++ b/src/core/lib/iomgr/udp_server.h
@@ -31,21 +31,22 @@
  *
  */
 
-#ifndef GRPC_CORE_IOMGR_UDP_SERVER_H
-#define GRPC_CORE_IOMGR_UDP_SERVER_H
+#ifndef GRPC_CORE_LIB_IOMGR_UDP_SERVER_H
+#define GRPC_CORE_LIB_IOMGR_UDP_SERVER_H
 
-#include "src/core/iomgr/endpoint.h"
-#include "src/core/iomgr/ev_posix.h"
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/ev_posix.h"
 
-/* Forward decl of grpc_server */
-typedef struct grpc_server grpc_server;
+/* Forward decl of struct grpc_server */
+/* This is not typedef'ed to avoid a typedef-redefinition error */
+struct grpc_server;
 
 /* Forward decl of grpc_udp_server */
 typedef struct grpc_udp_server grpc_udp_server;
 
 /* Called when data is available to read from the socket. */
 typedef void (*grpc_udp_server_read_cb)(grpc_exec_ctx *exec_ctx, grpc_fd *emfd,
-                                        grpc_server *server);
+                                        struct grpc_server *server);
 
 /* Create a server, initially not bound to any ports */
 grpc_udp_server *grpc_udp_server_create(void);
@@ -53,7 +54,7 @@ grpc_udp_server *grpc_udp_server_create(void);
 /* Start listening to bound ports */
 void grpc_udp_server_start(grpc_exec_ctx *exec_ctx, grpc_udp_server *udp_server,
                            grpc_pollset **pollsets, size_t pollset_count,
-                           grpc_server *server);
+                           struct grpc_server *server);
 
 int grpc_udp_server_get_fd(grpc_udp_server *s, unsigned index);
 
@@ -73,4 +74,4 @@ int grpc_udp_server_add_port(grpc_udp_server *s, const void *addr,
 void grpc_udp_server_destroy(grpc_exec_ctx *exec_ctx, grpc_udp_server *server,
                              grpc_closure *on_done);
 
-#endif /* GRPC_CORE_IOMGR_UDP_SERVER_H */
+#endif /* GRPC_CORE_LIB_IOMGR_UDP_SERVER_H */
diff --git a/src/core/lib/iomgr/unix_sockets_posix.c b/src/core/lib/iomgr/unix_sockets_posix.c
new file mode 100644
index 0000000000..42e44989e0
--- /dev/null
+++ b/src/core/lib/iomgr/unix_sockets_posix.c
@@ -0,0 +1,103 @@
+/*
+ *
+ * Copyright 2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "src/core/lib/iomgr/unix_sockets_posix.h"
+
+#ifdef GPR_HAVE_UNIX_SOCKET
+
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/un.h>
+
+#include <grpc/support/alloc.h>
+
+void grpc_create_socketpair_if_unix(int sv[2]) {
+  GPR_ASSERT(socketpair(AF_UNIX, SOCK_STREAM, 0, sv) == 0);
+}
+
+grpc_resolved_addresses *grpc_resolve_unix_domain_address(const char *name) {
+  struct sockaddr_un *un;
+
+  grpc_resolved_addresses *addrs = gpr_malloc(sizeof(grpc_resolved_addresses));
+  addrs->naddrs = 1;
+  addrs->addrs = gpr_malloc(sizeof(grpc_resolved_address));
+  un = (struct sockaddr_un *)addrs->addrs->addr;
+  un->sun_family = AF_UNIX;
+  strcpy(un->sun_path, name);
+  addrs->addrs->len = strlen(un->sun_path) + sizeof(un->sun_family) + 1;
+  return addrs;
+}
+
+int grpc_is_unix_socket(const struct sockaddr *addr) {
+  return addr->sa_family == AF_UNIX;
+}
+
+void grpc_unlink_if_unix_domain_socket(const struct sockaddr *addr) {
+  if (addr->sa_family != AF_UNIX) {
+    return;
+  }
+  struct sockaddr_un *un = (struct sockaddr_un *)addr;
+  struct stat st;
+
+  if (stat(un->sun_path, &st) == 0 && (st.st_mode & S_IFMT) == S_IFSOCK) {
+    unlink(un->sun_path);
+  }
+}
+
+int grpc_parse_unix(grpc_uri *uri, struct sockaddr_storage *addr, size_t *len) {
+  struct sockaddr_un *un = (struct sockaddr_un *)addr;
+
+  un->sun_family = AF_UNIX;
+  strcpy(un->sun_path, uri->path);
+  *len = strlen(un->sun_path) + sizeof(un->sun_family) + 1;
+
+  return 1;
+}
+
+char *grpc_unix_get_default_authority(grpc_resolver_factory *factory,
+                                      grpc_uri *uri) {
+  return gpr_strdup("localhost");
+}
+
+char *grpc_sockaddr_to_uri_unix_if_possible(const struct sockaddr *addr) {
+  if (addr->sa_family != AF_UNIX) {
+    return NULL;
+  }
+
+  char *result;
+  gpr_asprintf(&result, "unix:%s", ((struct sockaddr_un *)addr)->sun_path);
+  return result;
+}
+
+#endif
diff --git a/src/core/channel/client_uchannel.h b/src/core/lib/iomgr/unix_sockets_posix.h
index 8bb288e7d4..752cab85a5 100644
--- a/src/core/channel/client_uchannel.h
+++ b/src/core/lib/iomgr/unix_sockets_posix.h
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015-2016, Google Inc.
+ * Copyright 2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,30 +31,31 @@
  *
  */
 
-#ifndef GRPC_CORE_CHANNEL_CLIENT_UCHANNEL_H
-#define GRPC_CORE_CHANNEL_CLIENT_UCHANNEL_H
+#ifndef GRPC_CORE_LIB_IOMGR_UNIX_SOCKETS_POSIX_H
+#define GRPC_CORE_LIB_IOMGR_UNIX_SOCKETS_POSIX_H
 
-#include "src/core/channel/channel_stack.h"
-#include "src/core/client_config/resolver.h"
+#include <grpc/support/port_platform.h>
 
-#define GRPC_MICROCHANNEL_SUBCHANNEL_ARG "grpc.microchannel_subchannel_key"
+#include <grpc/support/string_util.h>
 
-/* A client microchannel (aka uchannel) is a channel wrapping a subchannel, for
- * the purposes of lightweight RPC communications from within the core.*/
+#include "src/core/lib/client_config/resolver_factory.h"
+#include "src/core/lib/client_config/uri_parser.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/iomgr/sockaddr.h"
 
-extern const grpc_channel_filter grpc_client_uchannel_filter;
+void grpc_create_socketpair_if_unix(int sv[2]);
 
-grpc_connectivity_state grpc_client_uchannel_check_connectivity_state(
-    grpc_exec_ctx *exec_ctx, grpc_channel_element *elem, int try_to_connect);
+grpc_resolved_addresses *grpc_resolve_unix_domain_address(const char *name);
 
-void grpc_client_uchannel_watch_connectivity_state(
-    grpc_exec_ctx *exec_ctx, grpc_channel_element *elem, grpc_pollset *pollset,
-    grpc_connectivity_state *state, grpc_closure *on_complete);
+int grpc_is_unix_socket(const struct sockaddr *addr);
 
-grpc_channel *grpc_client_uchannel_create(grpc_subchannel *subchannel,
-                                          grpc_channel_args *args);
+void grpc_unlink_if_unix_domain_socket(const struct sockaddr *addr);
 
-void grpc_client_uchannel_set_connected_subchannel(
-    grpc_channel *uchannel, grpc_connected_subchannel *connected_subchannel);
+int grpc_parse_unix(grpc_uri *uri, struct sockaddr_storage *addr, size_t *len);
 
-#endif /* GRPC_CORE_CHANNEL_CLIENT_UCHANNEL_H */
+char *grpc_unix_get_default_authority(grpc_resolver_factory *factory,
+                                      grpc_uri *uri);
+
+char *grpc_sockaddr_to_uri_unix_if_possible(const struct sockaddr *addr);
+
+#endif /* GRPC_CORE_LIB_IOMGR_UNIX_SOCKETS_POSIX_H */
diff --git a/src/core/httpcli/parser.h b/src/core/lib/iomgr/unix_sockets_posix_noop.c
index cd4a737245..06f6ee05e7 100644
--- a/src/core/httpcli/parser.h
+++ b/src/core/lib/iomgr/unix_sockets_posix_noop.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015-2016, Google Inc.
+ * Copyright 2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,34 +31,31 @@
  *
  */
 
-#ifndef GRPC_CORE_HTTPCLI_PARSER_H
-#define GRPC_CORE_HTTPCLI_PARSER_H
+#include "src/core/lib/iomgr/unix_sockets_posix.h"
 
-#include "src/core/httpcli/httpcli.h"
-#include <grpc/support/port_platform.h>
-#include <grpc/support/slice.h>
+#ifndef GPR_HAVE_UNIX_SOCKET
 
-typedef enum {
-  GRPC_HTTPCLI_INITIAL_RESPONSE,
-  GRPC_HTTPCLI_HEADERS,
-  GRPC_HTTPCLI_BODY
-} grpc_httpcli_parser_state;
+void grpc_create_socketpair_if_unix(int sv[2]) {}
 
-typedef struct {
-  grpc_httpcli_parser_state state;
+grpc_resolved_addresses *grpc_resolve_unix_domain_address(const char *name) {
+  return NULL;
+}
 
-  grpc_httpcli_response r;
-  size_t body_capacity;
-  size_t hdr_capacity;
+int grpc_is_unix_socket(const struct sockaddr *addr) { return false; }
 
-  uint8_t cur_line[GRPC_HTTPCLI_MAX_HEADER_LENGTH];
-  size_t cur_line_length;
-} grpc_httpcli_parser;
+void grpc_unlink_if_unix_domain_socket(const struct sockaddr *addr) {}
 
-void grpc_httpcli_parser_init(grpc_httpcli_parser* parser);
-void grpc_httpcli_parser_destroy(grpc_httpcli_parser* parser);
+int grpc_parse_unix(grpc_uri *uri, struct sockaddr_storage *addr, size_t *len) {
+  return 0;
+}
 
-int grpc_httpcli_parser_parse(grpc_httpcli_parser* parser, gpr_slice slice);
-int grpc_httpcli_parser_eof(grpc_httpcli_parser* parser);
+char *grpc_unix_get_default_authority(grpc_resolver_factory *factory,
+                                      grpc_uri *uri) {
+  return NULL;
+}
 
-#endif /* GRPC_CORE_HTTPCLI_PARSER_H */
+char *grpc_sockaddr_to_uri_unix_if_possible(const struct sockaddr *addr) {
+  return NULL;
+}
+
+#endif
diff --git a/src/core/iomgr/wakeup_fd_eventfd.c b/src/core/lib/iomgr/wakeup_fd_eventfd.c
index f67379e4fc..41ded0ca4d 100644
--- a/src/core/iomgr/wakeup_fd_eventfd.c
+++ b/src/core/lib/iomgr/wakeup_fd_eventfd.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -41,8 +41,8 @@
 
 #include <grpc/support/log.h>
 
-#include "src/core/iomgr/wakeup_fd_posix.h"
-#include "src/core/profiling/timers.h"
+#include "src/core/lib/iomgr/wakeup_fd_posix.h"
+#include "src/core/lib/profiling/timers.h"
 
 static void eventfd_create(grpc_wakeup_fd* fd_info) {
   int efd = eventfd(0, EFD_NONBLOCK | EFD_CLOEXEC);
diff --git a/src/core/iomgr/wakeup_fd_nospecial.c b/src/core/lib/iomgr/wakeup_fd_nospecial.c
index 78d763c103..39defa65c6 100644
--- a/src/core/iomgr/wakeup_fd_nospecial.c
+++ b/src/core/lib/iomgr/wakeup_fd_nospecial.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -40,8 +40,8 @@
 
 #ifdef GPR_POSIX_NO_SPECIAL_WAKEUP_FD
 
-#include "src/core/iomgr/wakeup_fd_posix.h"
 #include <stddef.h>
+#include "src/core/lib/iomgr/wakeup_fd_posix.h"
 
 static int check_availability_invalid(void) { return 0; }
 
diff --git a/src/core/iomgr/wakeup_fd_pipe.c b/src/core/lib/iomgr/wakeup_fd_pipe.c
index 80de181d9d..820919e4dd 100644
--- a/src/core/iomgr/wakeup_fd_pipe.c
+++ b/src/core/lib/iomgr/wakeup_fd_pipe.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -35,19 +35,24 @@
 
 #ifdef GPR_POSIX_WAKEUP_FD
 
-#include "src/core/iomgr/wakeup_fd_posix.h"
+#include "src/core/lib/iomgr/wakeup_fd_posix.h"
 
 #include <errno.h>
 #include <string.h>
 #include <unistd.h>
 
-#include "src/core/iomgr/socket_utils_posix.h"
 #include <grpc/support/log.h>
 
+#include "src/core/lib/iomgr/socket_utils_posix.h"
+
 static void pipe_init(grpc_wakeup_fd* fd_info) {
   int pipefd[2];
   /* TODO(klempner): Make this nonfatal */
-  GPR_ASSERT(0 == pipe(pipefd));
+  int r = pipe(pipefd);
+  if (0 != r) {
+    gpr_log(GPR_ERROR, "pipe creation failed (%d): %s", errno, strerror(errno));
+    abort();
+  }
   GPR_ASSERT(grpc_set_socket_nonblocking(pipefd[0], 1));
   GPR_ASSERT(grpc_set_socket_nonblocking(pipefd[1], 1));
   fd_info->read_fd = pipefd[0];
diff --git a/src/core/iomgr/wakeup_fd_pipe.h b/src/core/lib/iomgr/wakeup_fd_pipe.h
index eb3e02b482..bbdb1fc448 100644
--- a/src/core/iomgr/wakeup_fd_pipe.h
+++ b/src/core/lib/iomgr/wakeup_fd_pipe.h
@@ -31,11 +31,11 @@
  *
  */
 
-#ifndef GRPC_CORE_IOMGR_WAKEUP_FD_PIPE_H
-#define GRPC_CORE_IOMGR_WAKEUP_FD_PIPE_H
+#ifndef GRPC_CORE_LIB_IOMGR_WAKEUP_FD_PIPE_H
+#define GRPC_CORE_LIB_IOMGR_WAKEUP_FD_PIPE_H
 
-#include "src/core/iomgr/wakeup_fd_posix.h"
+#include "src/core/lib/iomgr/wakeup_fd_posix.h"
 
 extern grpc_wakeup_fd_vtable grpc_pipe_wakeup_fd_vtable;
 
-#endif /* GRPC_CORE_IOMGR_WAKEUP_FD_PIPE_H */
+#endif /* GRPC_CORE_LIB_IOMGR_WAKEUP_FD_PIPE_H */
diff --git a/src/core/iomgr/wakeup_fd_posix.c b/src/core/lib/iomgr/wakeup_fd_posix.c
index f40be081b0..c4d174fb34 100644
--- a/src/core/iomgr/wakeup_fd_posix.c
+++ b/src/core/lib/iomgr/wakeup_fd_posix.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -35,9 +35,9 @@
 
 #ifdef GPR_POSIX_WAKEUP_FD
 
-#include "src/core/iomgr/wakeup_fd_posix.h"
-#include "src/core/iomgr/wakeup_fd_pipe.h"
 #include <stddef.h>
+#include "src/core/lib/iomgr/wakeup_fd_pipe.h"
+#include "src/core/lib/iomgr/wakeup_fd_posix.h"
 
 static const grpc_wakeup_fd_vtable *wakeup_fd_vtable = NULL;
 int grpc_allow_specialized_wakeup_fd = 1;
diff --git a/src/core/iomgr/wakeup_fd_posix.h b/src/core/lib/iomgr/wakeup_fd_posix.h
index d7e3cf4673..20988d5fd3 100644
--- a/src/core/iomgr/wakeup_fd_posix.h
+++ b/src/core/lib/iomgr/wakeup_fd_posix.h
@@ -59,8 +59,8 @@
  * 2. If the polling thread was awakened by a wakeup_fd event, call
  *    grpc_wakeup_fd_consume_wakeup() on it.
  */
-#ifndef GRPC_CORE_IOMGR_WAKEUP_FD_POSIX_H
-#define GRPC_CORE_IOMGR_WAKEUP_FD_POSIX_H
+#ifndef GRPC_CORE_LIB_IOMGR_WAKEUP_FD_POSIX_H
+#define GRPC_CORE_LIB_IOMGR_WAKEUP_FD_POSIX_H
 
 void grpc_wakeup_fd_global_init(void);
 void grpc_wakeup_fd_global_destroy(void);
@@ -98,4 +98,4 @@ void grpc_wakeup_fd_destroy(grpc_wakeup_fd* fd_info);
  * wakeup_fd_nospecial.c if no such implementation exists. */
 extern const grpc_wakeup_fd_vtable grpc_specialized_wakeup_fd_vtable;
 
-#endif /* GRPC_CORE_IOMGR_WAKEUP_FD_POSIX_H */
+#endif /* GRPC_CORE_LIB_IOMGR_WAKEUP_FD_POSIX_H */
diff --git a/src/core/iomgr/workqueue.h b/src/core/lib/iomgr/workqueue.h
index 2ba1e5d9a2..9c420c57de 100644
--- a/src/core/iomgr/workqueue.h
+++ b/src/core/lib/iomgr/workqueue.h
@@ -31,20 +31,20 @@
  *
  */
 
-#ifndef GRPC_CORE_IOMGR_WORKQUEUE_H
-#define GRPC_CORE_IOMGR_WORKQUEUE_H
+#ifndef GRPC_CORE_LIB_IOMGR_WORKQUEUE_H
+#define GRPC_CORE_LIB_IOMGR_WORKQUEUE_H
 
-#include "src/core/iomgr/iomgr.h"
-#include "src/core/iomgr/pollset.h"
-#include "src/core/iomgr/closure.h"
-#include "src/core/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/closure.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/iomgr.h"
+#include "src/core/lib/iomgr/pollset.h"
 
 #ifdef GPR_POSIX_SOCKET
-#include "src/core/iomgr/workqueue_posix.h"
+#include "src/core/lib/iomgr/workqueue_posix.h"
 #endif
 
 #ifdef GPR_WIN32
-#include "src/core/iomgr/workqueue_windows.h"
+#include "src/core/lib/iomgr/workqueue_windows.h"
 #endif
 
 /* grpc_workqueue is forward declared in exec_ctx.h */
@@ -80,4 +80,4 @@ void grpc_workqueue_add_to_pollset(grpc_exec_ctx *exec_ctx,
 void grpc_workqueue_push(grpc_workqueue *workqueue, grpc_closure *closure,
                          int success);
 
-#endif /* GRPC_CORE_IOMGR_WORKQUEUE_H */
+#endif /* GRPC_CORE_LIB_IOMGR_WORKQUEUE_H */
diff --git a/src/core/iomgr/workqueue_posix.c b/src/core/lib/iomgr/workqueue_posix.c
index ffc4611c07..08c48b8c35 100644
--- a/src/core/iomgr/workqueue_posix.c
+++ b/src/core/lib/iomgr/workqueue_posix.c
@@ -35,7 +35,7 @@
 
 #ifdef GPR_POSIX_SOCKET
 
-#include "src/core/iomgr/workqueue.h"
+#include "src/core/lib/iomgr/workqueue.h"
 
 #include <stdio.h>
 
@@ -43,7 +43,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/useful.h>
 
-#include "src/core/iomgr/ev_posix.h"
+#include "src/core/lib/iomgr/ev_posix.h"
 
 static void on_readable(grpc_exec_ctx *exec_ctx, void *arg, bool success);
 
diff --git a/src/core/iomgr/workqueue_posix.h b/src/core/lib/iomgr/workqueue_posix.h
index 89937b1ea8..956de8fb27 100644
--- a/src/core/iomgr/workqueue_posix.h
+++ b/src/core/lib/iomgr/workqueue_posix.h
@@ -31,10 +31,10 @@
  *
  */
 
-#ifndef GRPC_CORE_IOMGR_WORKQUEUE_POSIX_H
-#define GRPC_CORE_IOMGR_WORKQUEUE_POSIX_H
+#ifndef GRPC_CORE_LIB_IOMGR_WORKQUEUE_POSIX_H
+#define GRPC_CORE_LIB_IOMGR_WORKQUEUE_POSIX_H
 
-#include "src/core/iomgr/wakeup_fd_posix.h"
+#include "src/core/lib/iomgr/wakeup_fd_posix.h"
 
 struct grpc_fd;
 
@@ -50,4 +50,4 @@ struct grpc_workqueue {
   grpc_closure read_closure;
 };
 
-#endif /* GRPC_CORE_IOMGR_WORKQUEUE_POSIX_H */
+#endif /* GRPC_CORE_LIB_IOMGR_WORKQUEUE_POSIX_H */
diff --git a/src/core/iomgr/workqueue_windows.c b/src/core/lib/iomgr/workqueue_windows.c
index f9ca57557b..6697f93498 100644
--- a/src/core/iomgr/workqueue_windows.c
+++ b/src/core/lib/iomgr/workqueue_windows.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -35,6 +35,6 @@
 
 #ifdef GPR_WIN32
 
-#include "src/core/iomgr/workqueue.h"
+#include "src/core/lib/iomgr/workqueue.h"
 
 #endif /* GPR_WIN32 */
diff --git a/src/core/iomgr/workqueue_windows.h b/src/core/lib/iomgr/workqueue_windows.h
index 7e8186921e..8e6980b6d9 100644
--- a/src/core/iomgr/workqueue_windows.h
+++ b/src/core/lib/iomgr/workqueue_windows.h
@@ -31,7 +31,7 @@
  *
  */
 
-#ifndef GRPC_CORE_IOMGR_WORKQUEUE_WINDOWS_H
-#define GRPC_CORE_IOMGR_WORKQUEUE_WINDOWS_H
+#ifndef GRPC_CORE_LIB_IOMGR_WORKQUEUE_WINDOWS_H
+#define GRPC_CORE_LIB_IOMGR_WORKQUEUE_WINDOWS_H
 
-#endif /* GRPC_CORE_IOMGR_WORKQUEUE_WINDOWS_H */
+#endif /* GRPC_CORE_LIB_IOMGR_WORKQUEUE_WINDOWS_H */
diff --git a/src/core/json/json.c b/src/core/lib/json/json.c
index 96e11eebb1..9793045d91 100644
--- a/src/core/json/json.c
+++ b/src/core/lib/json/json.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -35,7 +35,7 @@
 
 #include <grpc/support/alloc.h>
 
-#include "src/core/json/json.h"
+#include "src/core/lib/json/json.h"
 
 grpc_json *grpc_json_create(grpc_json_type type) {
   grpc_json *json = gpr_malloc(sizeof(*json));
diff --git a/src/core/json/json.h b/src/core/lib/json/json.h
index aea9d5dadb..41d87dd5ce 100644
--- a/src/core/json/json.h
+++ b/src/core/lib/json/json.h
@@ -31,12 +31,12 @@
  *
  */
 
-#ifndef GRPC_CORE_JSON_JSON_H
-#define GRPC_CORE_JSON_JSON_H
+#ifndef GRPC_CORE_LIB_JSON_JSON_H
+#define GRPC_CORE_LIB_JSON_JSON_H
 
 #include <stdlib.h>
 
-#include "src/core/json/json_common.h"
+#include "src/core/lib/json/json_common.h"
 
 /* A tree-like structure to hold json values. The key and value pointers
  * are not owned by it.
@@ -85,4 +85,4 @@ char *grpc_json_dump_to_string(grpc_json *json, int indent);
 grpc_json *grpc_json_create(grpc_json_type type);
 void grpc_json_destroy(grpc_json *json);
 
-#endif /* GRPC_CORE_JSON_JSON_H */
+#endif /* GRPC_CORE_LIB_JSON_JSON_H */
diff --git a/src/core/json/json_common.h b/src/core/lib/json/json_common.h
index 7205a94685..ce980040f8 100644
--- a/src/core/json/json_common.h
+++ b/src/core/lib/json/json_common.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_JSON_JSON_COMMON_H
-#define GRPC_CORE_JSON_JSON_COMMON_H
+#ifndef GRPC_CORE_LIB_JSON_JSON_COMMON_H
+#define GRPC_CORE_LIB_JSON_JSON_COMMON_H
 
 /* The various json types. */
 typedef enum {
@@ -46,4 +46,4 @@ typedef enum {
   GRPC_JSON_TOP_LEVEL
 } grpc_json_type;
 
-#endif /* GRPC_CORE_JSON_JSON_COMMON_H */
+#endif /* GRPC_CORE_LIB_JSON_JSON_COMMON_H */
diff --git a/src/core/json/json_reader.c b/src/core/lib/json/json_reader.c
index 30da6f28f3..0807f029ce 100644
--- a/src/core/json/json_reader.c
+++ b/src/core/lib/json/json_reader.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -37,7 +37,7 @@
 
 #include <grpc/support/log.h>
 
-#include "src/core/json/json_reader.h"
+#include "src/core/lib/json/json_reader.h"
 
 static void json_reader_string_clear(grpc_json_reader *reader) {
   reader->vtable->string_clear(reader->userdata);
diff --git a/src/core/json/json_reader.h b/src/core/lib/json/json_reader.h
index f25f44b2ef..37a838889d 100644
--- a/src/core/json/json_reader.h
+++ b/src/core/lib/json/json_reader.h
@@ -31,11 +31,11 @@
  *
  */
 
-#ifndef GRPC_CORE_JSON_JSON_READER_H
-#define GRPC_CORE_JSON_JSON_READER_H
+#ifndef GRPC_CORE_LIB_JSON_JSON_READER_H
+#define GRPC_CORE_LIB_JSON_JSON_READER_H
 
 #include <grpc/support/port_platform.h>
-#include "src/core/json/json_common.h"
+#include "src/core/lib/json/json_common.h"
 
 typedef enum {
   GRPC_JSON_STATE_OBJECT_KEY_BEGIN,
@@ -157,4 +157,4 @@ void grpc_json_reader_init(grpc_json_reader *reader,
  */
 int grpc_json_reader_is_complete(grpc_json_reader *reader);
 
-#endif /* GRPC_CORE_JSON_JSON_READER_H */
+#endif /* GRPC_CORE_LIB_JSON_JSON_READER_H */
diff --git a/src/core/json/json_string.c b/src/core/lib/json/json_string.c
index 2bc0b513d5..8e6f1253dc 100644
--- a/src/core/json/json_string.c
+++ b/src/core/lib/json/json_string.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,15 +31,15 @@
  *
  */
 
-#include <string.h>
 #include <stdlib.h>
+#include <string.h>
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 
-#include "src/core/json/json.h"
-#include "src/core/json/json_reader.h"
-#include "src/core/json/json_writer.h"
+#include "src/core/lib/json/json.h"
+#include "src/core/lib/json/json_reader.h"
+#include "src/core/lib/json/json_writer.h"
 
 /* The json reader will construct a bunch of grpc_json objects and
  * link them all up together in a tree-like structure that will represent
diff --git a/src/core/json/json_writer.c b/src/core/lib/json/json_writer.c
index 326ec2d431..d614a72fc4 100644
--- a/src/core/json/json_writer.c
+++ b/src/core/lib/json/json_writer.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -35,7 +35,7 @@
 
 #include <grpc/support/port_platform.h>
 
-#include "src/core/json/json_writer.h"
+#include "src/core/lib/json/json_writer.h"
 
 static void json_writer_output_char(grpc_json_writer *writer, char c) {
   writer->vtable->output_char(writer->userdata, c);
diff --git a/src/core/json/json_writer.h b/src/core/lib/json/json_writer.h
index c392126950..f90e79cd74 100644
--- a/src/core/json/json_writer.h
+++ b/src/core/lib/json/json_writer.h
@@ -43,12 +43,12 @@
  * a valid UTF-8 string overall.
  */
 
-#ifndef GRPC_CORE_JSON_JSON_WRITER_H
-#define GRPC_CORE_JSON_JSON_WRITER_H
+#ifndef GRPC_CORE_LIB_JSON_JSON_WRITER_H
+#define GRPC_CORE_LIB_JSON_JSON_WRITER_H
 
 #include <stdlib.h>
 
-#include "src/core/json/json_common.h"
+#include "src/core/lib/json/json_common.h"
 
 typedef struct grpc_json_writer_vtable {
   /* Adds a character to the output stream. */
@@ -94,4 +94,4 @@ void grpc_json_writer_value_raw_with_len(grpc_json_writer *writer,
 void grpc_json_writer_value_string(grpc_json_writer *writer,
                                    const char *string);
 
-#endif /* GRPC_CORE_JSON_JSON_WRITER_H */
+#endif /* GRPC_CORE_LIB_JSON_JSON_WRITER_H */
diff --git a/src/core/profiling/basic_timers.c b/src/core/lib/profiling/basic_timers.c
index df32472d1c..15a9584981 100644
--- a/src/core/profiling/basic_timers.c
+++ b/src/core/lib/profiling/basic_timers.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -35,13 +35,13 @@
 
 #ifdef GRPC_BASIC_PROFILER
 
-#include "src/core/profiling/timers.h"
+#include "src/core/lib/profiling/timers.h"
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
-#include <grpc/support/time.h>
 #include <grpc/support/sync.h>
 #include <grpc/support/thd.h>
+#include <grpc/support/time.h>
 #include <stdio.h>
 
 typedef enum { BEGIN = '{', END = '}', MARK = '.' } marker_type;
diff --git a/src/core/profiling/stap_probes.d b/src/core/lib/profiling/stap_probes.d
index 153de91752..153de91752 100644
--- a/src/core/profiling/stap_probes.d
+++ b/src/core/lib/profiling/stap_probes.d
diff --git a/src/core/profiling/stap_timers.c b/src/core/lib/profiling/stap_timers.c
index efcd1af4a1..f55c1a569a 100644
--- a/src/core/profiling/stap_timers.c
+++ b/src/core/lib/profiling/stap_timers.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -35,11 +35,11 @@
 
 #ifdef GRPC_STAP_PROFILER
 
-#include "src/core/profiling/timers.h"
+#include "src/core/lib/profiling/timers.h"
 
 #include <sys/sdt.h>
 /* Generated from src/core/profiling/stap_probes.d */
-#include "src/core/profiling/stap_probes.h"
+#include "src/core/lib/profiling/stap_probes.h"
 
 /* Latency profiler API implementation. */
 void gpr_timer_add_mark(int tag, const char *tagstr, void *id, const char *file,
diff --git a/src/core/profiling/timers.h b/src/core/lib/profiling/timers.h
index 6a188dc566..1303593ffb 100644
--- a/src/core/profiling/timers.h
+++ b/src/core/lib/profiling/timers.h
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_PROFILING_TIMERS_H
-#define GRPC_CORE_PROFILING_TIMERS_H
+#ifndef GRPC_CORE_LIB_PROFILING_TIMERS_H
+#define GRPC_CORE_LIB_PROFILING_TIMERS_H
 
 #ifdef __cplusplus
 extern "C" {
@@ -116,4 +116,4 @@ class ProfileScope {
 #endif
 #endif
 
-#endif /* GRPC_CORE_PROFILING_TIMERS_H */
+#endif /* GRPC_CORE_LIB_PROFILING_TIMERS_H */
diff --git a/src/core/proto/grpc/lb/v0/load_balancer.pb.c b/src/core/lib/proto/grpc/lb/v0/load_balancer.pb.c
index 59aae30cff..8f82141f96 100644
--- a/src/core/proto/grpc/lb/v0/load_balancer.pb.c
+++ b/src/core/lib/proto/grpc/lb/v0/load_balancer.pb.c
@@ -33,7 +33,7 @@
 /* Automatically generated nanopb constant definitions */
 /* Generated by nanopb-0.3.5-dev */
 
-#include "src/core/proto/grpc/lb/v0/load_balancer.pb.h"
+#include "src/core/lib/proto/grpc/lb/v0/load_balancer.pb.h"
 
 #if PB_PROTO_HEADER_VERSION != 30
 #error Regenerate this file with the current version of nanopb generator.
diff --git a/src/core/proto/grpc/lb/v0/load_balancer.pb.h b/src/core/lib/proto/grpc/lb/v0/load_balancer.pb.h
index 3599f881bb..3599f881bb 100644
--- a/src/core/proto/grpc/lb/v0/load_balancer.pb.h
+++ b/src/core/lib/proto/grpc/lb/v0/load_balancer.pb.h
diff --git a/src/core/security/auth_filters.h b/src/core/lib/security/auth_filters.h
index 1154a1d914..162b60e2c8 100644
--- a/src/core/security/auth_filters.h
+++ b/src/core/lib/security/auth_filters.h
@@ -31,12 +31,12 @@
  *
  */
 
-#ifndef GRPC_CORE_SECURITY_AUTH_FILTERS_H
-#define GRPC_CORE_SECURITY_AUTH_FILTERS_H
+#ifndef GRPC_CORE_LIB_SECURITY_AUTH_FILTERS_H
+#define GRPC_CORE_LIB_SECURITY_AUTH_FILTERS_H
 
-#include "src/core/channel/channel_stack.h"
+#include "src/core/lib/channel/channel_stack.h"
 
 extern const grpc_channel_filter grpc_client_auth_filter;
 extern const grpc_channel_filter grpc_server_auth_filter;
 
-#endif /* GRPC_CORE_SECURITY_AUTH_FILTERS_H */
+#endif /* GRPC_CORE_LIB_SECURITY_AUTH_FILTERS_H */
diff --git a/src/core/security/b64.c b/src/core/lib/security/b64.c
index c40b528e2f..1d3879534c 100644
--- a/src/core/security/b64.c
+++ b/src/core/lib/security/b64.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/security/b64.h"
+#include "src/core/lib/security/b64.h"
 
 #include <stdint.h>
 #include <string.h>
diff --git a/src/core/security/b64.h b/src/core/lib/security/b64.h
index d18f69563d..0bf372a1e7 100644
--- a/src/core/security/b64.h
+++ b/src/core/lib/security/b64.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_SECURITY_B64_H
-#define GRPC_CORE_SECURITY_B64_H
+#ifndef GRPC_CORE_LIB_SECURITY_B64_H
+#define GRPC_CORE_LIB_SECURITY_B64_H
 
 #include <grpc/support/slice.h>
 
@@ -49,4 +49,4 @@ gpr_slice grpc_base64_decode(const char *b64, int url_safe);
 gpr_slice grpc_base64_decode_with_len(const char *b64, size_t b64_len,
                                       int url_safe);
 
-#endif /* GRPC_CORE_SECURITY_B64_H */
+#endif /* GRPC_CORE_LIB_SECURITY_B64_H */
diff --git a/src/core/security/client_auth_filter.c b/src/core/lib/security/client_auth_filter.c
index 332d4259d2..b9e5bf0339 100644
--- a/src/core/security/client_auth_filter.c
+++ b/src/core/lib/security/client_auth_filter.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/security/auth_filters.h"
+#include "src/core/lib/security/auth_filters.h"
 
 #include <string.h>
 
@@ -39,13 +39,13 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 
-#include "src/core/channel/channel_stack.h"
-#include "src/core/security/credentials.h"
-#include "src/core/security/security_connector.h"
-#include "src/core/security/security_context.h"
-#include "src/core/support/string.h"
-#include "src/core/surface/call.h"
-#include "src/core/transport/static_metadata.h"
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/security/credentials.h"
+#include "src/core/lib/security/security_connector.h"
+#include "src/core/lib/security/security_context.h"
+#include "src/core/lib/support/string.h"
+#include "src/core/lib/surface/call.h"
+#include "src/core/lib/transport/static_metadata.h"
 
 #define MAX_CREDENTIALS_METADATA_COUNT 4
 
@@ -331,6 +331,6 @@ static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
 
 const grpc_channel_filter grpc_client_auth_filter = {
     auth_start_transport_op, grpc_channel_next_op, sizeof(call_data),
-    init_call_elem, set_pollset, destroy_call_elem, sizeof(channel_data),
-    init_channel_elem, destroy_channel_elem, grpc_call_next_get_peer,
-    "client-auth"};
+    init_call_elem,          set_pollset,          destroy_call_elem,
+    sizeof(channel_data),    init_channel_elem,    destroy_channel_elem,
+    grpc_call_next_get_peer, "client-auth"};
diff --git a/src/core/security/credentials.c b/src/core/lib/security/credentials.c
index b4fa616fa7..99a07e5c13 100644
--- a/src/core/security/credentials.c
+++ b/src/core/lib/security/credentials.c
@@ -31,18 +31,19 @@
  *
  */
 
-#include "src/core/security/credentials.h"
+#include "src/core/lib/security/credentials.h"
 
 #include <stdio.h>
 #include <string.h>
 
-#include "src/core/channel/channel_args.h"
-#include "src/core/channel/http_client_filter.h"
-#include "src/core/httpcli/httpcli.h"
-#include "src/core/iomgr/executor.h"
-#include "src/core/json/json.h"
-#include "src/core/support/string.h"
-#include "src/core/surface/api_trace.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/http_client_filter.h"
+#include "src/core/lib/http/httpcli.h"
+#include "src/core/lib/http/parser.h"
+#include "src/core/lib/iomgr/executor.h"
+#include "src/core/lib/json/json.h"
+#include "src/core/lib/support/string.h"
+#include "src/core/lib/surface/api_trace.h"
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
@@ -539,7 +540,7 @@ static void oauth2_token_fetcher_destruct(grpc_call_credentials *creds) {
 
 grpc_credentials_status
 grpc_oauth2_token_fetcher_credentials_parse_server_response(
-    const grpc_httpcli_response *response, grpc_credentials_md_store **token_md,
+    const grpc_http_response *response, grpc_credentials_md_store **token_md,
     gpr_timespec *token_lifetime) {
   char *null_terminated_body = NULL;
   char *new_access_token = NULL;
@@ -629,7 +630,7 @@ end:
 
 static void on_oauth2_token_fetcher_http_response(
     grpc_exec_ctx *exec_ctx, void *user_data,
-    const grpc_httpcli_response *response) {
+    const grpc_http_response *response) {
   grpc_credentials_metadata_request *r =
       (grpc_credentials_metadata_request *)user_data;
   grpc_oauth2_token_fetcher_credentials *c =
@@ -706,13 +707,13 @@ static void compute_engine_fetch_oauth2(
     grpc_exec_ctx *exec_ctx, grpc_credentials_metadata_request *metadata_req,
     grpc_httpcli_context *httpcli_context, grpc_pollset *pollset,
     grpc_httpcli_response_cb response_cb, gpr_timespec deadline) {
-  grpc_httpcli_header header = {"Metadata-Flavor", "Google"};
+  grpc_http_header header = {"Metadata-Flavor", "Google"};
   grpc_httpcli_request request;
   memset(&request, 0, sizeof(grpc_httpcli_request));
   request.host = GRPC_COMPUTE_ENGINE_METADATA_HOST;
-  request.path = GRPC_COMPUTE_ENGINE_METADATA_TOKEN_PATH;
-  request.hdr_count = 1;
-  request.hdrs = &header;
+  request.http.path = GRPC_COMPUTE_ENGINE_METADATA_TOKEN_PATH;
+  request.http.hdr_count = 1;
+  request.http.hdrs = &header;
   grpc_httpcli_get(exec_ctx, httpcli_context, pollset, &request, deadline,
                    response_cb, metadata_req);
 }
@@ -747,8 +748,8 @@ static void refresh_token_fetch_oauth2(
     grpc_httpcli_response_cb response_cb, gpr_timespec deadline) {
   grpc_google_refresh_token_credentials *c =
       (grpc_google_refresh_token_credentials *)metadata_req->creds;
-  grpc_httpcli_header header = {"Content-Type",
-                                "application/x-www-form-urlencoded"};
+  grpc_http_header header = {"Content-Type",
+                             "application/x-www-form-urlencoded"};
   grpc_httpcli_request request;
   char *body = NULL;
   gpr_asprintf(&body, GRPC_REFRESH_TOKEN_POST_BODY_FORMAT_STRING,
@@ -756,9 +757,9 @@ static void refresh_token_fetch_oauth2(
                c->refresh_token.refresh_token);
   memset(&request, 0, sizeof(grpc_httpcli_request));
   request.host = GRPC_GOOGLE_OAUTH2_SERVICE_HOST;
-  request.path = GRPC_GOOGLE_OAUTH2_SERVICE_TOKEN_PATH;
-  request.hdr_count = 1;
-  request.hdrs = &header;
+  request.http.path = GRPC_GOOGLE_OAUTH2_SERVICE_TOKEN_PATH;
+  request.http.hdr_count = 1;
+  request.http.hdrs = &header;
   request.handshaker = &grpc_httpcli_ssl;
   grpc_httpcli_post(exec_ctx, httpcli_context, pollset, &request, body,
                     strlen(body), deadline, response_cb, metadata_req);
diff --git a/src/core/security/credentials.h b/src/core/lib/security/credentials.h
index 133aa9d8d9..7168b98942 100644
--- a/src/core/security/credentials.h
+++ b/src/core/lib/security/credentials.h
@@ -31,19 +31,20 @@
  *
  */
 
-#ifndef GRPC_CORE_SECURITY_CREDENTIALS_H
-#define GRPC_CORE_SECURITY_CREDENTIALS_H
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_H
 
-#include "src/core/transport/metadata_batch.h"
 #include <grpc/grpc.h>
 #include <grpc/grpc_security.h>
 #include <grpc/support/sync.h>
+#include "src/core/lib/transport/metadata_batch.h"
 
-#include "src/core/httpcli/httpcli.h"
-#include "src/core/security/json_token.h"
-#include "src/core/security/security_connector.h"
+#include "src/core/lib/http/httpcli.h"
+#include "src/core/lib/http/parser.h"
+#include "src/core/lib/security/json_token.h"
+#include "src/core/lib/security/security_connector.h"
 
-struct grpc_httpcli_response;
+struct grpc_http_response;
 
 /* --- Constants. --- */
 
@@ -207,7 +208,7 @@ grpc_call_credentials *grpc_credentials_contains_type(
 /* Exposed for testing only. */
 grpc_credentials_status
 grpc_oauth2_token_fetcher_credentials_parse_server_response(
-    const struct grpc_httpcli_response *response,
+    const struct grpc_http_response *response,
     grpc_credentials_md_store **token_md, gpr_timespec *token_lifetime);
 
 void grpc_flush_cached_google_default_credentials(void);
@@ -373,4 +374,4 @@ typedef struct {
   grpc_credentials_md_store *plugin_md;
 } grpc_plugin_credentials;
 
-#endif /* GRPC_CORE_SECURITY_CREDENTIALS_H */
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_H */
diff --git a/src/core/security/credentials_metadata.c b/src/core/lib/security/credentials_metadata.c
index b8a132f1ea..c3bfcb11b5 100644
--- a/src/core/security/credentials_metadata.c
+++ b/src/core/lib/security/credentials_metadata.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/security/credentials.h"
+#include "src/core/lib/security/credentials.h"
 
 #include <grpc/support/alloc.h>
 
diff --git a/src/core/security/credentials_posix.c b/src/core/lib/security/credentials_posix.c
index 0c92bd4a96..b758cd0a1a 100644
--- a/src/core/security/credentials_posix.c
+++ b/src/core/lib/security/credentials_posix.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -35,14 +35,14 @@
 
 #ifdef GPR_POSIX_FILE
 
-#include "src/core/security/credentials.h"
+#include "src/core/lib/security/credentials.h"
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 
-#include "src/core/support/env.h"
-#include "src/core/support/string.h"
+#include "src/core/lib/support/env.h"
+#include "src/core/lib/support/string.h"
 
 char *grpc_get_well_known_google_credentials_file_path_impl(void) {
   char *result = NULL;
diff --git a/src/core/security/credentials_win32.c b/src/core/lib/security/credentials_win32.c
index 8ee9f706a1..a225ab0d7d 100644
--- a/src/core/security/credentials_win32.c
+++ b/src/core/lib/security/credentials_win32.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -35,14 +35,14 @@
 
 #ifdef GPR_WIN32
 
-#include "src/core/security/credentials.h"
+#include "src/core/lib/security/credentials.h"
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 
-#include "src/core/support/env.h"
-#include "src/core/support/string.h"
+#include "src/core/lib/support/env.h"
+#include "src/core/lib/support/string.h"
 
 char *grpc_get_well_known_google_credentials_file_path_impl(void) {
   char *result = NULL;
diff --git a/src/core/security/google_default_credentials.c b/src/core/lib/security/google_default_credentials.c
index 1f4f3e4aa5..5c342288cc 100644
--- a/src/core/security/google_default_credentials.c
+++ b/src/core/lib/security/google_default_credentials.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/security/credentials.h"
+#include "src/core/lib/security/credentials.h"
 
 #include <string.h>
 
@@ -39,10 +39,11 @@
 #include <grpc/support/log.h>
 #include <grpc/support/sync.h>
 
-#include "src/core/httpcli/httpcli.h"
-#include "src/core/support/env.h"
-#include "src/core/support/load_file.h"
-#include "src/core/surface/api_trace.h"
+#include "src/core/lib/http/httpcli.h"
+#include "src/core/lib/http/parser.h"
+#include "src/core/lib/support/env.h"
+#include "src/core/lib/support/load_file.h"
+#include "src/core/lib/surface/api_trace.h"
 
 /* -- Constants. -- */
 
@@ -66,14 +67,14 @@ typedef struct {
 
 static void on_compute_engine_detection_http_response(
     grpc_exec_ctx *exec_ctx, void *user_data,
-    const grpc_httpcli_response *response) {
+    const grpc_http_response *response) {
   compute_engine_detector *detector = (compute_engine_detector *)user_data;
   if (response != NULL && response->status == 200 && response->hdr_count > 0) {
     /* Internet providers can return a generic response to all requests, so
        it is necessary to check that metadata header is present also. */
     size_t i;
     for (i = 0; i < response->hdr_count; i++) {
-      grpc_httpcli_header *header = &response->hdrs[i];
+      grpc_http_header *header = &response->hdrs[i];
       if (strcmp(header->key, "Metadata-Flavor") == 0 &&
           strcmp(header->value, "Google") == 0) {
         detector->success = 1;
@@ -109,7 +110,7 @@ static int is_stack_running_on_compute_engine(void) {
 
   memset(&request, 0, sizeof(grpc_httpcli_request));
   request.host = GRPC_COMPUTE_ENGINE_DETECTION_HOST;
-  request.path = "/";
+  request.http.path = "/";
 
   grpc_httpcli_context_init(&context);
 
diff --git a/src/core/security/handshake.c b/src/core/lib/security/handshake.c
index b5bb6667a7..adb6d7fe4e 100644
--- a/src/core/security/handshake.c
+++ b/src/core/lib/security/handshake.c
@@ -31,16 +31,16 @@
  *
  */
 
-#include "src/core/security/handshake.h"
+#include "src/core/lib/security/handshake.h"
 
 #include <stdbool.h>
 #include <string.h>
 
-#include "src/core/security/security_context.h"
-#include "src/core/security/secure_endpoint.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/slice_buffer.h>
+#include "src/core/lib/security/secure_endpoint.h"
+#include "src/core/lib/security/security_context.h"
 
 #define GRPC_INITIAL_HANDSHAKE_BUFFER_SIZE 256
 
diff --git a/src/core/security/handshake.h b/src/core/lib/security/handshake.h
index 4872045874..b5d7bb3282 100644
--- a/src/core/security/handshake.h
+++ b/src/core/lib/security/handshake.h
@@ -31,11 +31,11 @@
  *
  */
 
-#ifndef GRPC_CORE_SECURITY_HANDSHAKE_H
-#define GRPC_CORE_SECURITY_HANDSHAKE_H
+#ifndef GRPC_CORE_LIB_SECURITY_HANDSHAKE_H
+#define GRPC_CORE_LIB_SECURITY_HANDSHAKE_H
 
-#include "src/core/iomgr/endpoint.h"
-#include "src/core/security/security_connector.h"
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/security/security_connector.h"
 
 /* Calls the callback upon completion. Takes owership of handshaker. */
 void grpc_do_security_handshake(grpc_exec_ctx *exec_ctx,
@@ -48,4 +48,4 @@ void grpc_do_security_handshake(grpc_exec_ctx *exec_ctx,
 
 void grpc_security_handshake_shutdown(grpc_exec_ctx *exec_ctx, void *handshake);
 
-#endif /* GRPC_CORE_SECURITY_HANDSHAKE_H */
+#endif /* GRPC_CORE_LIB_SECURITY_HANDSHAKE_H */
diff --git a/src/core/security/json_token.c b/src/core/lib/security/json_token.c
index 372e5bfc5a..97054286d9 100644
--- a/src/core/security/json_token.c
+++ b/src/core/lib/security/json_token.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/security/json_token.h"
+#include "src/core/lib/security/json_token.h"
 
 #include <string.h>
 
@@ -39,8 +39,8 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 
-#include "src/core/security/b64.h"
-#include "src/core/support/string.h"
+#include "src/core/lib/security/b64.h"
+#include "src/core/lib/support/string.h"
 
 #include <openssl/bio.h>
 #include <openssl/evp.h>
diff --git a/src/core/security/json_token.h b/src/core/lib/security/json_token.h
index d183f9b3a3..376fb03875 100644
--- a/src/core/security/json_token.h
+++ b/src/core/lib/security/json_token.h
@@ -31,13 +31,13 @@
  *
  */
 
-#ifndef GRPC_CORE_SECURITY_JSON_TOKEN_H
-#define GRPC_CORE_SECURITY_JSON_TOKEN_H
+#ifndef GRPC_CORE_LIB_SECURITY_JSON_TOKEN_H
+#define GRPC_CORE_LIB_SECURITY_JSON_TOKEN_H
 
 #include <grpc/support/slice.h>
 #include <openssl/rsa.h>
 
-#include "src/core/json/json.h"
+#include "src/core/lib/json/json.h"
 
 /* --- Constants. --- */
 
@@ -115,4 +115,4 @@ grpc_auth_refresh_token grpc_auth_refresh_token_create_from_json(
 /* Destructs the object. */
 void grpc_auth_refresh_token_destruct(grpc_auth_refresh_token *refresh_token);
 
-#endif /* GRPC_CORE_SECURITY_JSON_TOKEN_H */
+#endif /* GRPC_CORE_LIB_SECURITY_JSON_TOKEN_H */
diff --git a/src/core/security/jwt_verifier.c b/src/core/lib/security/jwt_verifier.c
index 928c6c148d..460b92f9a0 100644
--- a/src/core/security/jwt_verifier.c
+++ b/src/core/lib/security/jwt_verifier.c
@@ -31,14 +31,14 @@
  *
  */
 
-#include "src/core/security/jwt_verifier.h"
+#include "src/core/lib/security/jwt_verifier.h"
 
 #include <limits.h>
 #include <string.h>
 
-#include "src/core/httpcli/httpcli.h"
-#include "src/core/security/b64.h"
-#include "src/core/tsi/ssl_types.h"
+#include "src/core/lib/http/httpcli.h"
+#include "src/core/lib/security/b64.h"
+#include "src/core/lib/tsi/ssl_types.h"
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
@@ -635,11 +635,11 @@ static void on_openid_config_retrieved(grpc_exec_ctx *exec_ctx, void *user_data,
   jwks_uri += 8;
   req.handshaker = &grpc_httpcli_ssl;
   req.host = gpr_strdup(jwks_uri);
-  req.path = strchr(jwks_uri, '/');
-  if (req.path == NULL) {
-    req.path = "";
+  req.http.path = strchr(jwks_uri, '/');
+  if (req.http.path == NULL) {
+    req.http.path = "";
   } else {
-    *(req.host + (req.path - jwks_uri)) = '\0';
+    *(req.host + (req.http.path - jwks_uri)) = '\0';
   }
   grpc_httpcli_get(
       exec_ctx, &ctx->verifier->http_ctx, ctx->pollset, &req,
@@ -725,20 +725,20 @@ static void retrieve_key_and_verify(grpc_exec_ctx *exec_ctx,
     req.host = gpr_strdup(mapping->key_url_prefix);
     path_prefix = strchr(req.host, '/');
     if (path_prefix == NULL) {
-      gpr_asprintf(&req.path, "/%s", iss);
+      gpr_asprintf(&req.http.path, "/%s", iss);
     } else {
       *(path_prefix++) = '\0';
-      gpr_asprintf(&req.path, "/%s/%s", path_prefix, iss);
+      gpr_asprintf(&req.http.path, "/%s/%s", path_prefix, iss);
     }
     http_cb = on_keys_retrieved;
   } else {
     req.host = gpr_strdup(strstr(iss, "https://") == iss ? iss + 8 : iss);
     path_prefix = strchr(req.host, '/');
     if (path_prefix == NULL) {
-      req.path = gpr_strdup(GRPC_OPENID_CONFIG_URL_SUFFIX);
+      req.http.path = gpr_strdup(GRPC_OPENID_CONFIG_URL_SUFFIX);
     } else {
       *(path_prefix++) = 0;
-      gpr_asprintf(&req.path, "/%s%s", path_prefix,
+      gpr_asprintf(&req.http.path, "/%s%s", path_prefix,
                    GRPC_OPENID_CONFIG_URL_SUFFIX);
     }
     http_cb = on_openid_config_retrieved;
@@ -749,7 +749,7 @@ static void retrieve_key_and_verify(grpc_exec_ctx *exec_ctx,
       gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), grpc_jwt_verifier_max_delay),
       http_cb, ctx);
   gpr_free(req.host);
-  gpr_free(req.path);
+  gpr_free(req.http.path);
   return;
 
 error:
diff --git a/src/core/security/jwt_verifier.h b/src/core/lib/security/jwt_verifier.h
index d898d2193f..28a9eff048 100644
--- a/src/core/security/jwt_verifier.h
+++ b/src/core/lib/security/jwt_verifier.h
@@ -31,11 +31,11 @@
  *
  */
 
-#ifndef GRPC_CORE_SECURITY_JWT_VERIFIER_H
-#define GRPC_CORE_SECURITY_JWT_VERIFIER_H
+#ifndef GRPC_CORE_LIB_SECURITY_JWT_VERIFIER_H
+#define GRPC_CORE_LIB_SECURITY_JWT_VERIFIER_H
 
-#include "src/core/iomgr/pollset.h"
-#include "src/core/json/json.h"
+#include "src/core/lib/iomgr/pollset.h"
+#include "src/core/lib/json/json.h"
 
 #include <grpc/support/slice.h>
 #include <grpc/support/time.h>
@@ -133,4 +133,4 @@ grpc_jwt_claims *grpc_jwt_claims_from_json(grpc_json *json, gpr_slice buffer);
 grpc_jwt_verifier_status grpc_jwt_claims_check(const grpc_jwt_claims *claims,
                                                const char *audience);
 
-#endif /* GRPC_CORE_SECURITY_JWT_VERIFIER_H */
+#endif /* GRPC_CORE_LIB_SECURITY_JWT_VERIFIER_H */
diff --git a/src/core/security/secure_endpoint.c b/src/core/lib/security/secure_endpoint.c
index d11c43be20..e233b081ef 100644
--- a/src/core/security/secure_endpoint.c
+++ b/src/core/lib/security/secure_endpoint.c
@@ -31,15 +31,15 @@
  *
  */
 
-#include "src/core/security/secure_endpoint.h"
-#include "src/core/support/string.h"
+#include "src/core/lib/security/secure_endpoint.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
-#include <grpc/support/slice_buffer.h>
 #include <grpc/support/slice.h>
+#include <grpc/support/slice_buffer.h>
 #include <grpc/support/sync.h>
-#include "src/core/tsi/transport_security_interface.h"
-#include "src/core/debug/trace.h"
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/support/string.h"
+#include "src/core/lib/tsi/transport_security_interface.h"
 
 #define STAGING_BUFFER_SIZE 8192
 
@@ -354,8 +354,9 @@ static char *endpoint_get_peer(grpc_endpoint *secure_ep) {
 }
 
 static const grpc_endpoint_vtable vtable = {
-    endpoint_read, endpoint_write, endpoint_add_to_pollset,
-    endpoint_add_to_pollset_set, endpoint_shutdown, endpoint_destroy,
+    endpoint_read,           endpoint_write,
+    endpoint_add_to_pollset, endpoint_add_to_pollset_set,
+    endpoint_shutdown,       endpoint_destroy,
     endpoint_get_peer};
 
 grpc_endpoint *grpc_secure_endpoint_create(
diff --git a/src/core/security/secure_endpoint.h b/src/core/lib/security/secure_endpoint.h
index 5176ef2059..57bd160a52 100644
--- a/src/core/security/secure_endpoint.h
+++ b/src/core/lib/security/secure_endpoint.h
@@ -31,11 +31,11 @@
  *
  */
 
-#ifndef GRPC_CORE_SECURITY_SECURE_ENDPOINT_H
-#define GRPC_CORE_SECURITY_SECURE_ENDPOINT_H
+#ifndef GRPC_CORE_LIB_SECURITY_SECURE_ENDPOINT_H
+#define GRPC_CORE_LIB_SECURITY_SECURE_ENDPOINT_H
 
-#include "src/core/iomgr/endpoint.h"
 #include <grpc/support/slice.h>
+#include "src/core/lib/iomgr/endpoint.h"
 
 struct tsi_frame_protector;
 
@@ -46,4 +46,4 @@ grpc_endpoint *grpc_secure_endpoint_create(
     struct tsi_frame_protector *protector, grpc_endpoint *to_wrap,
     gpr_slice *leftover_slices, size_t leftover_nslices);
 
-#endif /* GRPC_CORE_SECURITY_SECURE_ENDPOINT_H */
+#endif /* GRPC_CORE_LIB_SECURITY_SECURE_ENDPOINT_H */
diff --git a/src/core/security/security_connector.c b/src/core/lib/security/security_connector.c
index fbec263eed..5474bc3a9e 100644
--- a/src/core/security/security_connector.c
+++ b/src/core/lib/security/security_connector.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/security/security_connector.h"
+#include "src/core/lib/security/security_connector.h"
 
 #include <stdbool.h>
 #include <string.h>
@@ -42,16 +42,16 @@
 #include <grpc/support/slice_buffer.h>
 #include <grpc/support/string_util.h>
 
-#include "src/core/security/credentials.h"
-#include "src/core/security/handshake.h"
-#include "src/core/security/secure_endpoint.h"
-#include "src/core/security/security_context.h"
-#include "src/core/support/env.h"
-#include "src/core/support/load_file.h"
-#include "src/core/support/string.h"
-#include "src/core/transport/chttp2/alpn.h"
-#include "src/core/tsi/fake_transport_security.h"
-#include "src/core/tsi/ssl_transport_security.h"
+#include "src/core/lib/security/credentials.h"
+#include "src/core/lib/security/handshake.h"
+#include "src/core/lib/security/secure_endpoint.h"
+#include "src/core/lib/security/security_context.h"
+#include "src/core/lib/support/env.h"
+#include "src/core/lib/support/load_file.h"
+#include "src/core/lib/support/string.h"
+#include "src/core/lib/transport/chttp2/alpn.h"
+#include "src/core/lib/tsi/fake_transport_security.h"
+#include "src/core/lib/tsi/ssl_transport_security.h"
 
 /* -- Constants. -- */
 
diff --git a/src/core/security/security_connector.h b/src/core/lib/security/security_connector.h
index 6f915ebb9d..d50091c628 100644
--- a/src/core/security/security_connector.h
+++ b/src/core/lib/security/security_connector.h
@@ -31,13 +31,13 @@
  *
  */
 
-#ifndef GRPC_CORE_SECURITY_SECURITY_CONNECTOR_H
-#define GRPC_CORE_SECURITY_SECURITY_CONNECTOR_H
+#ifndef GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_H
+#define GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_H
 
 #include <grpc/grpc_security.h>
-#include "src/core/iomgr/endpoint.h"
-#include "src/core/iomgr/tcp_server.h"
-#include "src/core/tsi/transport_security_interface.h"
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/tcp_server.h"
+#include "src/core/lib/tsi/transport_security_interface.h"
 
 /* --- status enum. --- */
 
@@ -263,4 +263,4 @@ tsi_peer tsi_shallow_peer_from_ssl_auth_context(
     const grpc_auth_context *auth_context);
 void tsi_shallow_peer_destruct(tsi_peer *peer);
 
-#endif /* GRPC_CORE_SECURITY_SECURITY_CONNECTOR_H */
+#endif /* GRPC_CORE_LIB_SECURITY_SECURITY_CONNECTOR_H */
diff --git a/src/core/security/security_context.c b/src/core/lib/security/security_context.c
index a71b3bc915..0e66373bd8 100644
--- a/src/core/security/security_context.c
+++ b/src/core/lib/security/security_context.c
@@ -33,10 +33,10 @@
 
 #include <string.h>
 
-#include "src/core/security/security_context.h"
-#include "src/core/surface/api_trace.h"
-#include "src/core/surface/call.h"
-#include "src/core/support/string.h"
+#include "src/core/lib/security/security_context.h"
+#include "src/core/lib/support/string.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/surface/call.h"
 
 #include <grpc/grpc_security.h>
 #include <grpc/support/alloc.h>
diff --git a/src/core/security/security_context.h b/src/core/lib/security/security_context.h
index 61601f538b..e9e4e503bc 100644
--- a/src/core/security/security_context.h
+++ b/src/core/lib/security/security_context.h
@@ -31,11 +31,11 @@
  *
  */
 
-#ifndef GRPC_CORE_SECURITY_SECURITY_CONTEXT_H
-#define GRPC_CORE_SECURITY_SECURITY_CONTEXT_H
+#ifndef GRPC_CORE_LIB_SECURITY_SECURITY_CONTEXT_H
+#define GRPC_CORE_LIB_SECURITY_SECURITY_CONTEXT_H
 
-#include "src/core/iomgr/pollset.h"
-#include "src/core/security/credentials.h"
+#include "src/core/lib/iomgr/pollset.h"
+#include "src/core/lib/security/credentials.h"
 
 /* --- grpc_auth_context ---
 
@@ -111,4 +111,4 @@ grpc_auth_context *grpc_auth_context_from_arg(const grpc_arg *arg);
 grpc_auth_context *grpc_find_auth_context_in_args(
     const grpc_channel_args *args);
 
-#endif /* GRPC_CORE_SECURITY_SECURITY_CONTEXT_H */
+#endif /* GRPC_CORE_LIB_SECURITY_SECURITY_CONTEXT_H */
diff --git a/src/core/security/server_auth_filter.c b/src/core/lib/security/server_auth_filter.c
index 3d8e5e8d35..158cde0e2c 100644
--- a/src/core/security/server_auth_filter.c
+++ b/src/core/lib/security/server_auth_filter.c
@@ -33,9 +33,9 @@
 
 #include <string.h>
 
-#include "src/core/security/auth_filters.h"
-#include "src/core/security/credentials.h"
-#include "src/core/security/security_context.h"
+#include "src/core/lib/security/auth_filters.h"
+#include "src/core/lib/security/credentials.h"
+#include "src/core/lib/security/security_context.h"
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
@@ -259,6 +259,6 @@ static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
 
 const grpc_channel_filter grpc_server_auth_filter = {
     auth_start_transport_op, grpc_channel_next_op, sizeof(call_data),
-    init_call_elem, set_pollset, destroy_call_elem, sizeof(channel_data),
-    init_channel_elem, destroy_channel_elem, grpc_call_next_get_peer,
-    "server-auth"};
+    init_call_elem,          set_pollset,          destroy_call_elem,
+    sizeof(channel_data),    init_channel_elem,    destroy_channel_elem,
+    grpc_call_next_get_peer, "server-auth"};
diff --git a/src/core/security/server_secure_chttp2.c b/src/core/lib/security/server_secure_chttp2.c
index 009ec95682..7c9dd221ed 100644
--- a/src/core/security/server_secure_chttp2.c
+++ b/src/core/lib/security/server_secure_chttp2.c
@@ -35,22 +35,22 @@
 
 #include <string.h>
 
-#include "src/core/channel/channel_args.h"
-#include "src/core/channel/http_server_filter.h"
-#include "src/core/iomgr/endpoint.h"
-#include "src/core/iomgr/resolve_address.h"
-#include "src/core/iomgr/tcp_server.h"
-#include "src/core/security/auth_filters.h"
-#include "src/core/security/credentials.h"
-#include "src/core/security/security_connector.h"
-#include "src/core/security/security_context.h"
-#include "src/core/surface/api_trace.h"
-#include "src/core/surface/server.h"
-#include "src/core/transport/chttp2_transport.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/sync.h>
 #include <grpc/support/useful.h>
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/http_server_filter.h"
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/iomgr/tcp_server.h"
+#include "src/core/lib/security/auth_filters.h"
+#include "src/core/lib/security/credentials.h"
+#include "src/core/lib/security/security_connector.h"
+#include "src/core/lib/security/security_context.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/surface/server.h"
+#include "src/core/lib/transport/chttp2_transport.h"
 
 typedef struct grpc_server_secure_state {
   grpc_server *server;
diff --git a/src/core/statistics/census_init.c b/src/core/lib/statistics/census_init.c
index b6a962f228..bbecd62764 100644
--- a/src/core/statistics/census_init.c
+++ b/src/core/lib/statistics/census_init.c
@@ -31,11 +31,11 @@
  *
  */
 
-#include "src/core/statistics/census_interface.h"
+#include "src/core/lib/statistics/census_interface.h"
 
 #include <grpc/support/log.h>
-#include "src/core/statistics/census_rpc_stats.h"
-#include "src/core/statistics/census_tracing.h"
+#include "src/core/lib/statistics/census_rpc_stats.h"
+#include "src/core/lib/statistics/census_tracing.h"
 
 void census_init(void) {
   census_tracing_init();
diff --git a/src/core/statistics/census_interface.h b/src/core/lib/statistics/census_interface.h
index ce8ff92cd4..b3b3439072 100644
--- a/src/core/statistics/census_interface.h
+++ b/src/core/lib/statistics/census_interface.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_STATISTICS_CENSUS_INTERFACE_H
-#define GRPC_CORE_STATISTICS_CENSUS_INTERFACE_H
+#ifndef GRPC_CORE_LIB_STATISTICS_CENSUS_INTERFACE_H
+#define GRPC_CORE_LIB_STATISTICS_CENSUS_INTERFACE_H
 
 #include <grpc/support/port_platform.h>
 
@@ -73,4 +73,4 @@ census_op_id census_tracing_start_op(void);
 /* Ends tracing. Calling this function will invalidate the input op_id. */
 void census_tracing_end_op(census_op_id op_id);
 
-#endif /* GRPC_CORE_STATISTICS_CENSUS_INTERFACE_H */
+#endif /* GRPC_CORE_LIB_STATISTICS_CENSUS_INTERFACE_H */
diff --git a/src/core/statistics/census_log.c b/src/core/lib/statistics/census_log.c
index 257ba586a3..1fb942a78a 100644
--- a/src/core/statistics/census_log.c
+++ b/src/core/lib/statistics/census_log.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -89,8 +89,7 @@
    include the name of the structure, which will be passed as the first
    argument. E.g. cl_block_initialize() will initialize a cl_block.
 */
-#include "src/core/statistics/census_log.h"
-#include <string.h>
+#include "src/core/lib/statistics/census_log.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/atm.h>
 #include <grpc/support/cpu.h>
@@ -98,6 +97,7 @@
 #include <grpc/support/port_platform.h>
 #include <grpc/support/sync.h>
 #include <grpc/support/useful.h>
+#include <string.h>
 
 /* End of platform specific code */
 
diff --git a/src/core/statistics/census_log.h b/src/core/lib/statistics/census_log.h
index e7ce0d4433..c3fbd555ba 100644
--- a/src/core/statistics/census_log.h
+++ b/src/core/lib/statistics/census_log.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_STATISTICS_CENSUS_LOG_H
-#define GRPC_CORE_STATISTICS_CENSUS_LOG_H
+#ifndef GRPC_CORE_LIB_STATISTICS_CENSUS_LOG_H
+#define GRPC_CORE_LIB_STATISTICS_CENSUS_LOG_H
 
 #include <stddef.h>
 
@@ -88,4 +88,4 @@ size_t census_log_remaining_space(void);
    out-of-space. */
 int census_log_out_of_space_count(void);
 
-#endif /* GRPC_CORE_STATISTICS_CENSUS_LOG_H */
+#endif /* GRPC_CORE_LIB_STATISTICS_CENSUS_LOG_H */
diff --git a/src/core/statistics/census_rpc_stats.c b/src/core/lib/statistics/census_rpc_stats.c
index 524a60793a..2182561668 100644
--- a/src/core/statistics/census_rpc_stats.c
+++ b/src/core/lib/statistics/census_rpc_stats.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -33,16 +33,16 @@
 
 #include <string.h>
 
-#include "src/core/statistics/census_interface.h"
-#include "src/core/statistics/census_rpc_stats.h"
-#include "src/core/statistics/hash_table.h"
-#include "src/core/statistics/census_tracing.h"
-#include "src/core/statistics/window_stats.h"
-#include "src/core/support/murmur_hash.h"
-#include "src/core/support/string.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/sync.h>
+#include "src/core/lib/statistics/census_interface.h"
+#include "src/core/lib/statistics/census_rpc_stats.h"
+#include "src/core/lib/statistics/census_tracing.h"
+#include "src/core/lib/statistics/hash_table.h"
+#include "src/core/lib/statistics/window_stats.h"
+#include "src/core/lib/support/murmur_hash.h"
+#include "src/core/lib/support/string.h"
 
 #define NUM_INTERVALS 3
 #define MINUTE_INTERVAL 0
@@ -85,8 +85,8 @@ static void delete_key(void *key) { gpr_free(key); }
 
 static const census_ht_option ht_opt = {
     CENSUS_HT_POINTER /* key type */, 1999 /* n_of_buckets */,
-    simple_hash /* hash function */, cmp_str_keys /* key comparator */,
-    delete_stats /* data deleter */, delete_key /* key deleter */
+    simple_hash /* hash function */,  cmp_str_keys /* key comparator */,
+    delete_stats /* data deleter */,  delete_key /* key deleter */
 };
 
 static void init_rpc_stats(void *stats) {
diff --git a/src/core/statistics/census_rpc_stats.h b/src/core/lib/statistics/census_rpc_stats.h
index 4cf17d2e52..00bb48205e 100644
--- a/src/core/statistics/census_rpc_stats.h
+++ b/src/core/lib/statistics/census_rpc_stats.h
@@ -31,11 +31,11 @@
  *
  */
 
-#ifndef GRPC_CORE_STATISTICS_CENSUS_RPC_STATS_H
-#define GRPC_CORE_STATISTICS_CENSUS_RPC_STATS_H
+#ifndef GRPC_CORE_LIB_STATISTICS_CENSUS_RPC_STATS_H
+#define GRPC_CORE_LIB_STATISTICS_CENSUS_RPC_STATS_H
 
-#include "src/core/statistics/census_interface.h"
 #include <grpc/support/port_platform.h>
+#include "src/core/lib/statistics/census_interface.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -98,4 +98,4 @@ void census_stats_store_shutdown(void);
 }
 #endif
 
-#endif /* GRPC_CORE_STATISTICS_CENSUS_RPC_STATS_H */
+#endif /* GRPC_CORE_LIB_STATISTICS_CENSUS_RPC_STATS_H */
diff --git a/src/core/statistics/census_tracing.c b/src/core/lib/statistics/census_tracing.c
index dc0f8a26f5..b58ae733fc 100644
--- a/src/core/statistics/census_tracing.c
+++ b/src/core/lib/statistics/census_tracing.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,18 +31,18 @@
  *
  */
 
-#include "src/core/statistics/census_interface.h"
-#include "src/core/statistics/census_tracing.h"
+#include "src/core/lib/statistics/census_tracing.h"
+#include "src/core/lib/statistics/census_interface.h"
 
 #include <stdio.h>
 #include <string.h>
 
-#include "src/core/statistics/hash_table.h"
-#include "src/core/support/string.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/port_platform.h>
 #include <grpc/support/sync.h>
+#include "src/core/lib/statistics/hash_table.h"
+#include "src/core/lib/support/string.h"
 
 void census_trace_obj_destroy(census_trace_obj *obj) {
   census_trace_annotation *p = obj->annotations;
@@ -60,8 +60,11 @@ static void delete_trace_obj(void *obj) {
 }
 
 static const census_ht_option ht_opt = {
-    CENSUS_HT_UINT64 /* key type */, 571 /* n_of_buckets */, NULL /* hash */,
-    NULL /* compare_keys */, delete_trace_obj /* delete data */,
+    CENSUS_HT_UINT64 /* key type */,
+    571 /* n_of_buckets */,
+    NULL /* hash */,
+    NULL /* compare_keys */,
+    delete_trace_obj /* delete data */,
     NULL /* delete key */
 };
 
diff --git a/src/core/statistics/census_tracing.h b/src/core/lib/statistics/census_tracing.h
index b611e95bf4..a101abf3cb 100644
--- a/src/core/statistics/census_tracing.h
+++ b/src/core/lib/statistics/census_tracing.h
@@ -31,11 +31,11 @@
  *
  */
 
-#ifndef GRPC_CORE_STATISTICS_CENSUS_TRACING_H
-#define GRPC_CORE_STATISTICS_CENSUS_TRACING_H
+#ifndef GRPC_CORE_LIB_STATISTICS_CENSUS_TRACING_H
+#define GRPC_CORE_LIB_STATISTICS_CENSUS_TRACING_H
 
 #include <grpc/support/time.h>
-#include "src/core/statistics/census_rpc_stats.h"
+#include "src/core/lib/statistics/census_rpc_stats.h"
 
 /* WARNING: The data structures and APIs provided by this file are for GRPC
    library's internal use ONLY. They might be changed in backward-incompatible
@@ -93,4 +93,4 @@ census_trace_obj **census_get_active_ops(int *num_active_ops);
 }
 #endif
 
-#endif /* GRPC_CORE_STATISTICS_CENSUS_TRACING_H */
+#endif /* GRPC_CORE_LIB_STATISTICS_CENSUS_TRACING_H */
diff --git a/src/core/statistics/hash_table.c b/src/core/lib/statistics/hash_table.c
index 0cadcd4740..18b7442a0c 100644
--- a/src/core/statistics/hash_table.c
+++ b/src/core/lib/statistics/hash_table.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,13 +31,13 @@
  *
  */
 
-#include "src/core/statistics/hash_table.h"
+#include "src/core/lib/statistics/hash_table.h"
 
-#include <stdio.h>
 #include <stddef.h>
+#include <stdio.h>
 
-#include <grpc/support/log.h>
 #include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
 #include <grpc/support/port_platform.h>
 
 #define CENSUS_HT_NUM_BUCKETS 1999
diff --git a/src/core/statistics/hash_table.h b/src/core/lib/statistics/hash_table.h
index f4bf2ba49a..8f74ec82aa 100644
--- a/src/core/statistics/hash_table.h
+++ b/src/core/lib/statistics/hash_table.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_STATISTICS_HASH_TABLE_H
-#define GRPC_CORE_STATISTICS_HASH_TABLE_H
+#ifndef GRPC_CORE_LIB_STATISTICS_HASH_TABLE_H
+#define GRPC_CORE_LIB_STATISTICS_HASH_TABLE_H
 
 #include <stddef.h>
 
@@ -128,4 +128,4 @@ typedef void (*census_ht_itr_cb)(census_ht_key key, const void *val_ptr,
    should not invalidate data entries. */
 uint64_t census_ht_for_all(const census_ht *ht, census_ht_itr_cb);
 
-#endif /* GRPC_CORE_STATISTICS_HASH_TABLE_H */
+#endif /* GRPC_CORE_LIB_STATISTICS_HASH_TABLE_H */
diff --git a/src/core/statistics/window_stats.c b/src/core/lib/statistics/window_stats.c
index 3f2940853a..53427a24bc 100644
--- a/src/core/statistics/window_stats.c
+++ b/src/core/lib/statistics/window_stats.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,14 +31,14 @@
  *
  */
 
-#include "src/core/statistics/window_stats.h"
-#include <math.h>
-#include <stddef.h>
-#include <string.h>
+#include "src/core/lib/statistics/window_stats.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
 #include <grpc/support/useful.h>
+#include <math.h>
+#include <stddef.h>
+#include <string.h>
 
 /* typedefs make typing long names easier. Use cws (for census_window_stats) */
 typedef census_window_stats_stat_info cws_stat_info;
diff --git a/src/core/statistics/window_stats.h b/src/core/lib/statistics/window_stats.h
index 774277180f..8dec50d620 100644
--- a/src/core/statistics/window_stats.h
+++ b/src/core/lib/statistics/window_stats.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_STATISTICS_WINDOW_STATS_H
-#define GRPC_CORE_STATISTICS_WINDOW_STATS_H
+#ifndef GRPC_CORE_LIB_STATISTICS_WINDOW_STATS_H
+#define GRPC_CORE_LIB_STATISTICS_WINDOW_STATS_H
 
 #include <grpc/support/time.h>
 
@@ -170,4 +170,4 @@ void census_window_stats_get_sums(const struct census_window_stats *wstats,
    assertion failure). This function is thread-compatible. */
 void census_window_stats_destroy(struct census_window_stats *wstats);
 
-#endif /* GRPC_CORE_STATISTICS_WINDOW_STATS_H */
+#endif /* GRPC_CORE_LIB_STATISTICS_WINDOW_STATS_H */
diff --git a/src/core/support/alloc.c b/src/core/lib/support/alloc.c
index b99584bd20..27fa6a95ed 100644
--- a/src/core/support/alloc.c
+++ b/src/core/lib/support/alloc.c
@@ -33,10 +33,10 @@
 
 #include <grpc/support/alloc.h>
 
-#include <stdlib.h>
 #include <grpc/support/log.h>
 #include <grpc/support/port_platform.h>
-#include "src/core/profiling/timers.h"
+#include <stdlib.h>
+#include "src/core/lib/profiling/timers.h"
 
 static gpr_allocation_functions g_alloc_functions = {malloc, realloc, free};
 
diff --git a/src/core/support/avl.c b/src/core/lib/support/avl.c
index f378b3ee17..f378b3ee17 100644
--- a/src/core/support/avl.c
+++ b/src/core/lib/support/avl.c
diff --git a/src/core/support/backoff.c b/src/core/lib/support/backoff.c
index 7458219645..e89ef47220 100644
--- a/src/core/support/backoff.c
+++ b/src/core/lib/support/backoff.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/support/backoff.h"
+#include "src/core/lib/support/backoff.h"
 
 #include <grpc/support/useful.h>
 
@@ -69,3 +69,8 @@ gpr_timespec gpr_backoff_step(gpr_backoff *backoff, gpr_timespec now) {
   return gpr_time_add(
       now, gpr_time_from_millis(backoff->current_timeout_millis, GPR_TIMESPAN));
 }
+
+void gpr_backoff_reset(gpr_backoff *backoff) {
+  // forces step() to return a timeout of min_timeout_millis
+  backoff->current_timeout_millis = 0;
+}
diff --git a/src/core/support/backoff.h b/src/core/lib/support/backoff.h
index f7730fde2a..6d40c15546 100644
--- a/src/core/support/backoff.h
+++ b/src/core/lib/support/backoff.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_SUPPORT_BACKOFF_H
-#define GRPC_CORE_SUPPORT_BACKOFF_H
+#ifndef GRPC_CORE_LIB_SUPPORT_BACKOFF_H
+#define GRPC_CORE_LIB_SUPPORT_BACKOFF_H
 
 #include <grpc/support/time.h>
 
@@ -61,5 +61,8 @@ void gpr_backoff_init(gpr_backoff *backoff, double multiplier, double jitter,
 gpr_timespec gpr_backoff_begin(gpr_backoff *backoff, gpr_timespec now);
 /// Step a retry loop: returns a timespec for the NEXT retry
 gpr_timespec gpr_backoff_step(gpr_backoff *backoff, gpr_timespec now);
+/// Reset the backoff, so the next gpr_backoff_step will be a gpr_backoff_begin
+/// instead
+void gpr_backoff_reset(gpr_backoff *backoff);
 
-#endif /* GRPC_CORE_SUPPORT_BACKOFF_H */
+#endif /* GRPC_CORE_LIB_SUPPORT_BACKOFF_H */
diff --git a/src/core/support/block_annotate.h b/src/core/lib/support/block_annotate.h
index 79a18039f4..bd3071655e 100644
--- a/src/core/support/block_annotate.h
+++ b/src/core/lib/support/block_annotate.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_SUPPORT_BLOCK_ANNOTATE_H
-#define GRPC_CORE_SUPPORT_BLOCK_ANNOTATE_H
+#ifndef GRPC_CORE_LIB_SUPPORT_BLOCK_ANNOTATE_H
+#define GRPC_CORE_LIB_SUPPORT_BLOCK_ANNOTATE_H
 
 /* These annotations identify the beginning and end of regions where
    the code may block for reasons other than synchronization functions.
@@ -45,4 +45,4 @@
   do {                                      \
   } while (0)
 
-#endif /* GRPC_CORE_SUPPORT_BLOCK_ANNOTATE_H */
+#endif /* GRPC_CORE_LIB_SUPPORT_BLOCK_ANNOTATE_H */
diff --git a/src/core/support/cmdline.c b/src/core/lib/support/cmdline.c
index b517f30b2d..35c4990b22 100644
--- a/src/core/support/cmdline.c
+++ b/src/core/lib/support/cmdline.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -37,10 +37,10 @@
 #include <stdio.h>
 #include <string.h>
 
-#include "src/core/support/string.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
+#include "src/core/lib/support/string.h"
 
 typedef enum { ARGTYPE_INT, ARGTYPE_BOOL, ARGTYPE_STRING } argtype;
 
diff --git a/src/core/support/cpu_iphone.c b/src/core/lib/support/cpu_iphone.c
index 82b49b47bc..e83191bada 100644
--- a/src/core/support/cpu_iphone.c
+++ b/src/core/lib/support/cpu_iphone.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/core/support/cpu_linux.c b/src/core/lib/support/cpu_linux.c
index 7af6a8f009..5597df2d03 100644
--- a/src/core/support/cpu_linux.c
+++ b/src/core/lib/support/cpu_linux.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -39,10 +39,10 @@
 
 #ifdef GPR_CPU_LINUX
 
-#include <sched.h>
 #include <errno.h>
-#include <unistd.h>
+#include <sched.h>
 #include <string.h>
+#include <unistd.h>
 
 #include <grpc/support/cpu.h>
 #include <grpc/support/log.h>
diff --git a/src/core/support/cpu_posix.c b/src/core/lib/support/cpu_posix.c
index 8f01c284ca..e508ddd8ca 100644
--- a/src/core/support/cpu_posix.c
+++ b/src/core/lib/support/cpu_posix.c
@@ -36,8 +36,8 @@
 #ifdef GPR_CPU_POSIX
 
 #include <errno.h>
-#include <unistd.h>
 #include <string.h>
+#include <unistd.h>
 
 #include <grpc/support/log.h>
 #include <grpc/support/sync.h>
diff --git a/src/core/support/cpu_windows.c b/src/core/lib/support/cpu_windows.c
index ce32eb0a9d..0f84a9e5ea 100644
--- a/src/core/support/cpu_windows.c
+++ b/src/core/lib/support/cpu_windows.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/core/support/env.h b/src/core/lib/support/env.h
index 2902456947..ddc4ee3c6d 100644
--- a/src/core/support/env.h
+++ b/src/core/lib/support/env.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_SUPPORT_ENV_H
-#define GRPC_CORE_SUPPORT_ENV_H
+#ifndef GRPC_CORE_LIB_SUPPORT_ENV_H
+#define GRPC_CORE_LIB_SUPPORT_ENV_H
 
 #include <stdio.h>
 
@@ -57,4 +57,4 @@ void gpr_setenv(const char *name, const char *value);
 }
 #endif
 
-#endif /* GRPC_CORE_SUPPORT_ENV_H */
+#endif /* GRPC_CORE_LIB_SUPPORT_ENV_H */
diff --git a/src/core/support/env_linux.c b/src/core/lib/support/env_linux.c
index fe51f846b7..a86133e6c3 100644
--- a/src/core/support/env_linux.c
+++ b/src/core/lib/support/env_linux.c
@@ -40,7 +40,7 @@
 
 #ifdef GPR_LINUX_ENV
 
-#include "src/core/support/env.h"
+#include "src/core/lib/support/env.h"
 
 #include <dlfcn.h>
 #include <features.h>
@@ -51,7 +51,7 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/useful.h>
 
-#include "src/core/support/string.h"
+#include "src/core/lib/support/string.h"
 
 char *gpr_getenv(const char *name) {
 #if defined(GPR_BACKWARDS_COMPATIBILITY_MODE)
diff --git a/src/core/support/env_posix.c b/src/core/lib/support/env_posix.c
index 1dd2af56bc..1b57b094a9 100644
--- a/src/core/support/env_posix.c
+++ b/src/core/lib/support/env_posix.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -35,14 +35,14 @@
 
 #ifdef GPR_POSIX_ENV
 
-#include "src/core/support/env.h"
+#include "src/core/lib/support/env.h"
 
 #include <stdlib.h>
 
 #include <grpc/support/log.h>
 
-#include "src/core/support/string.h"
 #include <grpc/support/string_util.h>
+#include "src/core/lib/support/string.h"
 
 char *gpr_getenv(const char *name) {
   char *result = getenv(name);
diff --git a/src/core/support/env_win32.c b/src/core/lib/support/env_win32.c
index 10258283ba..566feee49e 100644
--- a/src/core/support/env_win32.c
+++ b/src/core/lib/support/env_win32.c
@@ -35,8 +35,8 @@
 
 #ifdef GPR_WIN32
 
-#include "src/core/support/env.h"
-#include "src/core/support/string.h"
+#include "src/core/lib/support/env.h"
+#include "src/core/lib/support/string.h"
 
 #ifdef __MINGW32__
 errno_t getenv_s(size_t *size_needed, char *buffer, size_t size,
diff --git a/src/core/support/histogram.c b/src/core/lib/support/histogram.c
index 20ed2b14b1..62227be1a6 100644
--- a/src/core/support/histogram.c
+++ b/src/core/lib/support/histogram.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -38,8 +38,8 @@
 #include <string.h>
 
 #include <grpc/support/alloc.h>
-#include <grpc/support/port_platform.h>
 #include <grpc/support/log.h>
+#include <grpc/support/port_platform.h>
 #include <grpc/support/useful.h>
 
 /* Histograms are stored with exponentially increasing bucket sizes.
diff --git a/src/core/support/host_port.c b/src/core/lib/support/host_port.c
index 23f65b1581..e03f6241ff 100644
--- a/src/core/support/host_port.c
+++ b/src/core/lib/support/host_port.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -35,10 +35,10 @@
 
 #include <string.h>
 
-#include "src/core/support/string.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
+#include "src/core/lib/support/string.h"
 
 int gpr_join_host_port(char **out, const char *host, int port) {
   if (host[0] != '[' && strchr(host, ':') != NULL) {
diff --git a/src/core/support/load_file.c b/src/core/lib/support/load_file.c
index 650bd62ccb..0cecd5edd5 100644
--- a/src/core/support/load_file.c
+++ b/src/core/lib/support/load_file.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/support/load_file.h"
+#include "src/core/lib/support/load_file.h"
 
 #include <errno.h>
 #include <string.h>
@@ -40,8 +40,8 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 
-#include "src/core/support/block_annotate.h"
-#include "src/core/support/string.h"
+#include "src/core/lib/support/block_annotate.h"
+#include "src/core/lib/support/string.h"
 
 gpr_slice gpr_load_file(const char *filename, int add_null_terminator,
                         int *success) {
diff --git a/src/core/support/load_file.h b/src/core/lib/support/load_file.h
index 5896654e9a..fe030c967e 100644
--- a/src/core/support/load_file.h
+++ b/src/core/lib/support/load_file.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_SUPPORT_LOAD_FILE_H
-#define GRPC_CORE_SUPPORT_LOAD_FILE_H
+#ifndef GRPC_CORE_LIB_SUPPORT_LOAD_FILE_H
+#define GRPC_CORE_LIB_SUPPORT_LOAD_FILE_H
 
 #include <stdio.h>
 
@@ -52,4 +52,4 @@ gpr_slice gpr_load_file(const char *filename, int add_null_terminator,
 }
 #endif
 
-#endif /* GRPC_CORE_SUPPORT_LOAD_FILE_H */
+#endif /* GRPC_CORE_LIB_SUPPORT_LOAD_FILE_H */
diff --git a/src/core/support/log.c b/src/core/lib/support/log.c
index 04156a5b1f..cd6a0726cf 100644
--- a/src/core/support/log.c
+++ b/src/core/lib/support/log.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/core/support/log_android.c b/src/core/lib/support/log_android.c
index 5d0c7d820d..640c9d7099 100644
--- a/src/core/support/log_android.c
+++ b/src/core/lib/support/log_android.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -35,12 +35,12 @@
 
 #ifdef GPR_ANDROID
 
+#include <android/log.h>
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
-#include <stdio.h>
 #include <stdarg.h>
+#include <stdio.h>
 #include <string.h>
-#include <android/log.h>
 
 static android_LogPriority severity_to_log_priority(gpr_log_severity severity) {
   switch (severity) {
diff --git a/src/core/support/log_linux.c b/src/core/lib/support/log_linux.c
index d66b7a3cc0..e60512c526 100644
--- a/src/core/support/log_linux.c
+++ b/src/core/lib/support/log_linux.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -47,12 +47,12 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 #include <grpc/support/time.h>
-#include <stdio.h>
+#include <linux/unistd.h>
 #include <stdarg.h>
+#include <stdio.h>
 #include <string.h>
-#include <time.h>
-#include <linux/unistd.h>
 #include <sys/syscall.h>
+#include <time.h>
 #include <unistd.h>
 
 static long gettid(void) { return syscall(__NR_gettid); }
diff --git a/src/core/support/log_posix.c b/src/core/lib/support/log_posix.c
index 3ff171f99c..7429dd0a2c 100644
--- a/src/core/support/log_posix.c
+++ b/src/core/lib/support/log_posix.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -38,12 +38,12 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
-#include <stdio.h>
+#include <pthread.h>
 #include <stdarg.h>
-#include <string.h>
 #include <stdio.h>
+#include <stdio.h>
+#include <string.h>
 #include <time.h>
-#include <pthread.h>
 
 static intptr_t gettid(void) { return (intptr_t)pthread_self(); }
 
diff --git a/src/core/support/log_win32.c b/src/core/lib/support/log_win32.c
index e18e667fe5..cec99440a5 100644
--- a/src/core/support/log_win32.c
+++ b/src/core/lib/support/log_win32.c
@@ -35,17 +35,17 @@
 
 #ifdef GPR_WIN32
 
-#include <stdio.h>
 #include <stdarg.h>
+#include <stdio.h>
 
 #include <grpc/support/alloc.h>
-#include <grpc/support/log_win32.h>
 #include <grpc/support/log.h>
-#include <grpc/support/time.h>
+#include <grpc/support/log_win32.h>
 #include <grpc/support/string_util.h>
+#include <grpc/support/time.h>
 
-#include "src/core/support/string.h"
-#include "src/core/support/string_win32.h"
+#include "src/core/lib/support/string.h"
+#include "src/core/lib/support/string_win32.h"
 
 void gpr_log(const char *file, int line, gpr_log_severity severity,
              const char *format, ...) {
diff --git a/src/core/support/murmur_hash.c b/src/core/lib/support/murmur_hash.c
index a5261c0cc0..97832f1510 100644
--- a/src/core/support/murmur_hash.c
+++ b/src/core/lib/support/murmur_hash.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/support/murmur_hash.h"
+#include "src/core/lib/support/murmur_hash.h"
 
 #define ROTL32(x, r) ((x) << (r)) | ((x) >> (32 - (r)))
 
diff --git a/src/core/support/murmur_hash.h b/src/core/lib/support/murmur_hash.h
index 0f0b399e5d..e54cdf2592 100644
--- a/src/core/support/murmur_hash.h
+++ b/src/core/lib/support/murmur_hash.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_SUPPORT_MURMUR_HASH_H
-#define GRPC_CORE_SUPPORT_MURMUR_HASH_H
+#ifndef GRPC_CORE_LIB_SUPPORT_MURMUR_HASH_H
+#define GRPC_CORE_LIB_SUPPORT_MURMUR_HASH_H
 
 #include <grpc/support/port_platform.h>
 
@@ -41,4 +41,4 @@
 /* compute the hash of key (length len) */
 uint32_t gpr_murmur_hash3(const void *key, size_t len, uint32_t seed);
 
-#endif /* GRPC_CORE_SUPPORT_MURMUR_HASH_H */
+#endif /* GRPC_CORE_LIB_SUPPORT_MURMUR_HASH_H */
diff --git a/src/core/support/slice.c b/src/core/lib/support/slice.c
index b9a7c77bda..cf3953ce4e 100644
--- a/src/core/support/slice.c
+++ b/src/core/lib/support/slice.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/core/support/slice_buffer.c b/src/core/lib/support/slice_buffer.c
index 66f111d767..563e659dd7 100644
--- a/src/core/support/slice_buffer.c
+++ b/src/core/lib/support/slice_buffer.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/core/support/stack_lockfree.c b/src/core/lib/support/stack_lockfree.c
index 9daecd2e18..de80486132 100644
--- a/src/core/support/stack_lockfree.c
+++ b/src/core/lib/support/stack_lockfree.c
@@ -31,15 +31,15 @@
  *
  */
 
-#include "src/core/support/stack_lockfree.h"
+#include "src/core/lib/support/stack_lockfree.h"
 
 #include <stdlib.h>
 #include <string.h>
 
-#include <grpc/support/port_platform.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/atm.h>
 #include <grpc/support/log.h>
+#include <grpc/support/port_platform.h>
 
 /* The lockfree node structure is a single architecture-level
    word that allows for an atomic CAS to set it up. */
@@ -64,10 +64,10 @@ typedef union lockfree_node {
   struct lockfree_node_contents contents;
 } lockfree_node;
 
-#define ENTRY_ALIGNMENT_BITS 3 /* make sure that entries aligned to 8-bytes */
-#define INVALID_ENTRY_INDEX                        \
-  ((1 << 16) - 1) /* reserve this entry as invalid \
-                    */
+/* make sure that entries aligned to 8-bytes */
+#define ENTRY_ALIGNMENT_BITS 3
+/* reserve this entry as invalid */
+#define INVALID_ENTRY_INDEX ((1 << 16) - 1)
 
 struct gpr_stack_lockfree {
   lockfree_node *entries;
diff --git a/src/core/support/stack_lockfree.h b/src/core/lib/support/stack_lockfree.h
index d6fd06d67c..a030a01d1f 100644
--- a/src/core/support/stack_lockfree.h
+++ b/src/core/lib/support/stack_lockfree.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_SUPPORT_STACK_LOCKFREE_H
-#define GRPC_CORE_SUPPORT_STACK_LOCKFREE_H
+#ifndef GRPC_CORE_LIB_SUPPORT_STACK_LOCKFREE_H
+#define GRPC_CORE_LIB_SUPPORT_STACK_LOCKFREE_H
 
 #include <stddef.h>
 
@@ -50,4 +50,4 @@ int gpr_stack_lockfree_push(gpr_stack_lockfree *, int entry);
 /* Returns -1 on empty or the actual entry number */
 int gpr_stack_lockfree_pop(gpr_stack_lockfree *stack);
 
-#endif /* GRPC_CORE_SUPPORT_STACK_LOCKFREE_H */
+#endif /* GRPC_CORE_LIB_SUPPORT_STACK_LOCKFREE_H */
diff --git a/src/core/support/string.c b/src/core/lib/support/string.c
index 1f541de40f..365d861de3 100644
--- a/src/core/support/string.c
+++ b/src/core/lib/support/string.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/support/string.h"
+#include "src/core/lib/support/string.h"
 
 #include <ctype.h>
 #include <stddef.h>
diff --git a/src/core/support/string.h b/src/core/lib/support/string.h
index a367ed7cd8..68c02878e0 100644
--- a/src/core/support/string.h
+++ b/src/core/lib/support/string.h
@@ -31,14 +31,14 @@
  *
  */
 
-#ifndef GRPC_CORE_SUPPORT_STRING_H
-#define GRPC_CORE_SUPPORT_STRING_H
+#ifndef GRPC_CORE_LIB_SUPPORT_STRING_H
+#define GRPC_CORE_LIB_SUPPORT_STRING_H
 
 #include <stddef.h>
 
 #include <grpc/support/port_platform.h>
-#include <grpc/support/slice_buffer.h>
 #include <grpc/support/slice.h>
+#include <grpc/support/slice_buffer.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -118,4 +118,4 @@ char *gpr_strvec_flatten(gpr_strvec *strs, size_t *total_length);
 }
 #endif
 
-#endif /* GRPC_CORE_SUPPORT_STRING_H */
+#endif /* GRPC_CORE_LIB_SUPPORT_STRING_H */
diff --git a/src/core/support/string_posix.c b/src/core/lib/support/string_posix.c
index 25c333db4e..a73b3106a5 100644
--- a/src/core/support/string_posix.c
+++ b/src/core/lib/support/string_posix.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -35,8 +35,8 @@
 
 #ifdef GPR_POSIX_STRING
 
-#include <stdio.h>
 #include <stdarg.h>
+#include <stdio.h>
 #include <string.h>
 
 #include <grpc/support/alloc.h>
diff --git a/src/core/support/string_win32.c b/src/core/lib/support/string_win32.c
index 3b1f702cf1..16b7e37f2a 100644
--- a/src/core/support/string_win32.c
+++ b/src/core/lib/support/string_win32.c
@@ -37,13 +37,13 @@
 
 #ifdef GPR_WIN32
 
-#include <stdio.h>
 #include <stdarg.h>
+#include <stdio.h>
 #include <string.h>
 
 #include <grpc/support/alloc.h>
 
-#include "src/core/support/string.h"
+#include "src/core/lib/support/string.h"
 
 int gpr_asprintf(char **strp, const char *format, ...) {
   va_list args;
diff --git a/src/core/support/string_win32.h b/src/core/lib/support/string_win32.h
index c9ae8d9932..f47d567715 100644
--- a/src/core/support/string_win32.h
+++ b/src/core/lib/support/string_win32.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_SUPPORT_STRING_WIN32_H
-#define GRPC_CORE_SUPPORT_STRING_WIN32_H
+#ifndef GRPC_CORE_LIB_SUPPORT_STRING_WIN32_H
+#define GRPC_CORE_LIB_SUPPORT_STRING_WIN32_H
 
 #include <grpc/support/port_platform.h>
 
@@ -44,4 +44,4 @@ LPSTR gpr_tchar_to_char(LPCTSTR input);
 
 #endif /* GPR_WIN32 */
 
-#endif /* GRPC_CORE_SUPPORT_STRING_WIN32_H */
+#endif /* GRPC_CORE_LIB_SUPPORT_STRING_WIN32_H */
diff --git a/src/core/support/subprocess_posix.c b/src/core/lib/support/subprocess_posix.c
index 171054e4da..662e7dd999 100644
--- a/src/core/support/subprocess_posix.c
+++ b/src/core/lib/support/subprocess_posix.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -37,15 +37,15 @@
 
 #include <grpc/support/subprocess.h>
 
-#include <unistd.h>
 #include <assert.h>
 #include <errno.h>
-#include <stdio.h>
-#include <string.h>
 #include <signal.h>
+#include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <sys/types.h>
 #include <sys/wait.h>
+#include <unistd.h>
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
diff --git a/src/core/support/subprocess_windows.c b/src/core/lib/support/subprocess_windows.c
index 2b25ef063a..264306f1bd 100644
--- a/src/core/support/subprocess_windows.c
+++ b/src/core/lib/support/subprocess_windows.c
@@ -35,15 +35,15 @@
 
 #ifdef GPR_WINDOWS_SUBPROCESS
 
-#include <windows.h>
 #include <string.h>
 #include <tchar.h>
+#include <windows.h>
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/subprocess.h>
-#include "src/core/support/string.h"
-#include "src/core/support/string_win32.h"
+#include "src/core/lib/support/string.h"
+#include "src/core/lib/support/string_win32.h"
 
 struct gpr_subprocess {
   PROCESS_INFORMATION pi;
diff --git a/src/core/support/sync.c b/src/core/lib/support/sync.c
index 69e3e39c5c..800cf20287 100644
--- a/src/core/support/sync.c
+++ b/src/core/lib/support/sync.c
@@ -33,9 +33,9 @@
 
 /* Generic implementation of synchronization primitives. */
 
+#include <grpc/support/atm.h>
 #include <grpc/support/log.h>
 #include <grpc/support/sync.h>
-#include <grpc/support/atm.h>
 
 /* Number of mutexes to allocate for events, to avoid lock contention.
    Should be a prime. */
diff --git a/src/core/support/sync_posix.c b/src/core/lib/support/sync_posix.c
index d3c483f1b5..a5e59db8c7 100644
--- a/src/core/support/sync_posix.c
+++ b/src/core/lib/support/sync_posix.c
@@ -36,11 +36,11 @@
 #ifdef GPR_POSIX_SYNC
 
 #include <errno.h>
-#include <time.h>
 #include <grpc/support/log.h>
 #include <grpc/support/sync.h>
 #include <grpc/support/time.h>
-#include "src/core/profiling/timers.h"
+#include <time.h>
+#include "src/core/lib/profiling/timers.h"
 
 void gpr_mu_init(gpr_mu* mu) { GPR_ASSERT(pthread_mutex_init(mu, NULL) == 0); }
 
diff --git a/src/core/support/sync_win32.c b/src/core/lib/support/sync_win32.c
index 41998ebcb6..41998ebcb6 100644
--- a/src/core/support/sync_win32.c
+++ b/src/core/lib/support/sync_win32.c
diff --git a/src/core/support/thd.c b/src/core/lib/support/thd.c
index 41daeb5d0e..d59aace38d 100644
--- a/src/core/support/thd.c
+++ b/src/core/lib/support/thd.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/core/support/thd_internal.h b/src/core/lib/support/thd_internal.h
index 33b904e59b..f269a3249e 100644
--- a/src/core/support/thd_internal.h
+++ b/src/core/lib/support/thd_internal.h
@@ -31,9 +31,9 @@
  *
  */
 
-#ifndef GRPC_CORE_SUPPORT_THD_INTERNAL_H
-#define GRPC_CORE_SUPPORT_THD_INTERNAL_H
+#ifndef GRPC_CORE_LIB_SUPPORT_THD_INTERNAL_H
+#define GRPC_CORE_LIB_SUPPORT_THD_INTERNAL_H
 
 /* Internal interfaces between modules within the gpr support library.  */
 
-#endif /* GRPC_CORE_SUPPORT_THD_INTERNAL_H */
+#endif /* GRPC_CORE_LIB_SUPPORT_THD_INTERNAL_H */
diff --git a/src/core/support/thd_posix.c b/src/core/lib/support/thd_posix.c
index 653a1c88c1..4d874d3656 100644
--- a/src/core/support/thd_posix.c
+++ b/src/core/lib/support/thd_posix.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -37,13 +37,13 @@
 
 #ifdef GPR_POSIX_SYNC
 
-#include <pthread.h>
-#include <stdlib.h>
-#include <string.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/thd.h>
 #include <grpc/support/useful.h>
+#include <pthread.h>
+#include <stdlib.h>
+#include <string.h>
 
 struct thd_arg {
   void (*body)(void *arg); /* body of a thread */
diff --git a/src/core/support/thd_win32.c b/src/core/lib/support/thd_win32.c
index a9db180c1b..630eb7f625 100644
--- a/src/core/support/thd_win32.c
+++ b/src/core/lib/support/thd_win32.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -37,10 +37,10 @@
 
 #ifdef GPR_WIN32
 
-#include <string.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/thd.h>
+#include <string.h>
 
 #if defined(_MSC_VER)
 #define thread_local __declspec(thread)
diff --git a/src/core/support/time.c b/src/core/lib/support/time.c
index 423d12ffc0..0e2c8fcf1a 100644
--- a/src/core/support/time.c
+++ b/src/core/lib/support/time.c
@@ -33,11 +33,11 @@
 
 /* Generic implementation of time calls. */
 
+#include <grpc/support/log.h>
 #include <grpc/support/time.h>
 #include <limits.h>
 #include <stdio.h>
 #include <string.h>
-#include <grpc/support/log.h>
 
 int gpr_time_cmp(gpr_timespec a, gpr_timespec b) {
   int cmp = (a.tv_sec > b.tv_sec) - (a.tv_sec < b.tv_sec);
diff --git a/src/core/support/time_posix.c b/src/core/lib/support/time_posix.c
index 36d75e7da2..fcfab2f2fa 100644
--- a/src/core/support/time_posix.c
+++ b/src/core/lib/support/time_posix.c
@@ -32,7 +32,7 @@
  */
 
 #include <grpc/support/port_platform.h>
-#include <src/core/support/time_precise.h>
+#include "src/core/lib/support/time_precise.h"
 
 #ifdef GPR_POSIX_TIME
 
@@ -44,7 +44,7 @@
 #endif
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
-#include "src/core/support/block_annotate.h"
+#include "src/core/lib/support/block_annotate.h"
 
 static struct timespec timespec_from_gpr(gpr_timespec gts) {
   struct timespec rv;
@@ -98,9 +98,9 @@ gpr_timespec gpr_now(gpr_clock_type clock_type) {
 #else
 /* For some reason Apple's OSes haven't implemented clock_gettime. */
 
-#include <sys/time.h>
 #include <mach/mach.h>
 #include <mach/mach_time.h>
+#include <sys/time.h>
 
 static double g_time_scale;
 static uint64_t g_time_start;
diff --git a/src/core/support/time_precise.c b/src/core/lib/support/time_precise.c
index a2cf74bc84..31ac47e0f8 100644
--- a/src/core/support/time_precise.c
+++ b/src/core/lib/support/time_precise.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/core/support/time_precise.h b/src/core/lib/support/time_precise.h
index 871c99a623..e1faee1f9f 100644
--- a/src/core/support/time_precise.h
+++ b/src/core/lib/support/time_precise.h
@@ -31,12 +31,12 @@
  *
  */
 
-#ifndef GRPC_CORE_SUPPORT_TIME_PRECISE_H
-#define GRPC_CORE_SUPPORT_TIME_PRECISE_H
+#ifndef GRPC_CORE_LIB_SUPPORT_TIME_PRECISE_H
+#define GRPC_CORE_LIB_SUPPORT_TIME_PRECISE_H
 
 #include <grpc/support/time.h>
 
 void gpr_precise_clock_init(void);
 void gpr_precise_clock_now(gpr_timespec *clk);
 
-#endif /* GRPC_CORE_SUPPORT_TIME_PRECISE_H */
+#endif /* GRPC_CORE_LIB_SUPPORT_TIME_PRECISE_H */
diff --git a/src/core/support/time_win32.c b/src/core/lib/support/time_win32.c
index 8af957e6f4..a6ac003fb8 100644
--- a/src/core/support/time_win32.c
+++ b/src/core/lib/support/time_win32.c
@@ -39,12 +39,12 @@
 
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
-#include <src/core/support/time_precise.h>
-#include <sys/timeb.h>
-#include <process.h>
 #include <limits.h>
+#include <process.h>
+#include <sys/timeb.h>
 
-#include "src/core/support/block_annotate.h"
+#include "src/core/lib/support/block_annotate.h"
+#include "src/core/lib/support/time_precise.h"
 
 static LARGE_INTEGER g_start_time;
 static double g_time_scale;
diff --git a/src/core/support/tls_pthread.c b/src/core/lib/support/tls_pthread.c
index 9683a6e547..bdc7ed14ae 100644
--- a/src/core/support/tls_pthread.c
+++ b/src/core/lib/support/tls_pthread.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/core/support/tmpfile.h b/src/core/lib/support/tmpfile.h
index df6f8692bb..4fec2076e3 100644
--- a/src/core/support/tmpfile.h
+++ b/src/core/lib/support/tmpfile.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_SUPPORT_TMPFILE_H
-#define GRPC_CORE_SUPPORT_TMPFILE_H
+#ifndef GRPC_CORE_LIB_SUPPORT_TMPFILE_H
+#define GRPC_CORE_LIB_SUPPORT_TMPFILE_H
 
 #include <stdio.h>
 
@@ -52,4 +52,4 @@ FILE *gpr_tmpfile(const char *prefix, char **tmp_filename);
 }
 #endif
 
-#endif /* GRPC_CORE_SUPPORT_TMPFILE_H */
+#endif /* GRPC_CORE_LIB_SUPPORT_TMPFILE_H */
diff --git a/src/core/support/tmpfile_posix.c b/src/core/lib/support/tmpfile_posix.c
index b16eeacf9d..743f45e1bc 100644
--- a/src/core/support/tmpfile_posix.c
+++ b/src/core/lib/support/tmpfile_posix.c
@@ -35,7 +35,7 @@
 
 #ifdef GPR_POSIX_FILE
 
-#include "src/core/support/tmpfile.h"
+#include "src/core/lib/support/tmpfile.h"
 
 #include <errno.h>
 #include <stdlib.h>
@@ -46,7 +46,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 
-#include "src/core/support/string.h"
+#include "src/core/lib/support/string.h"
 
 FILE *gpr_tmpfile(const char *prefix, char **tmp_filename) {
   FILE *result = NULL;
diff --git a/src/core/support/tmpfile_win32.c b/src/core/lib/support/tmpfile_win32.c
index 3000f0029f..05d92b6036 100644
--- a/src/core/support/tmpfile_win32.c
+++ b/src/core/lib/support/tmpfile_win32.c
@@ -44,8 +44,8 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 
-#include "src/core/support/string_win32.h"
-#include "src/core/support/tmpfile.h"
+#include "src/core/lib/support/string_win32.h"
+#include "src/core/lib/support/tmpfile.h"
 
 FILE *gpr_tmpfile(const char *prefix, char **tmp_filename_out) {
   FILE *result = NULL;
diff --git a/src/core/support/wrap_memcpy.c b/src/core/lib/support/wrap_memcpy.c
index 15c289f7b8..15c289f7b8 100644
--- a/src/core/support/wrap_memcpy.c
+++ b/src/core/lib/support/wrap_memcpy.c
diff --git a/src/core/surface/alarm.c b/src/core/lib/surface/alarm.c
index 8169ede065..368683378e 100644
--- a/src/core/surface/alarm.c
+++ b/src/core/lib/surface/alarm.c
@@ -31,10 +31,10 @@
  *
  */
 
-#include "src/core/iomgr/timer.h"
-#include "src/core/surface/completion_queue.h"
 #include <grpc/grpc.h>
 #include <grpc/support/alloc.h>
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/surface/completion_queue.h"
 
 struct grpc_alarm {
   grpc_timer alarm;
diff --git a/src/core/surface/api_trace.c b/src/core/lib/surface/api_trace.c
index 9f0b900d46..3702c024db 100644
--- a/src/core/surface/api_trace.c
+++ b/src/core/lib/surface/api_trace.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,6 +31,6 @@
  *
  */
 
-#include "src/core/surface/api_trace.h"
+#include "src/core/lib/surface/api_trace.h"
 
 int grpc_api_trace = 0;
diff --git a/src/core/surface/api_trace.h b/src/core/lib/surface/api_trace.h
index 29a9b2d79c..b50011c9e5 100644
--- a/src/core/surface/api_trace.h
+++ b/src/core/lib/surface/api_trace.h
@@ -31,11 +31,11 @@
  *
  */
 
-#ifndef GRPC_CORE_SURFACE_API_TRACE_H
-#define GRPC_CORE_SURFACE_API_TRACE_H
+#ifndef GRPC_CORE_LIB_SURFACE_API_TRACE_H
+#define GRPC_CORE_LIB_SURFACE_API_TRACE_H
 
-#include "src/core/debug/trace.h"
 #include <grpc/support/log.h>
+#include "src/core/lib/debug/trace.h"
 
 extern int grpc_api_trace;
 
@@ -62,4 +62,4 @@ extern int grpc_api_trace;
     gpr_log(GPR_INFO, fmt GRPC_API_TRACE_UNWRAP##nargs args); \
   }
 
-#endif /* GRPC_CORE_SURFACE_API_TRACE_H */
+#endif /* GRPC_CORE_LIB_SURFACE_API_TRACE_H */
diff --git a/src/core/surface/byte_buffer.c b/src/core/lib/surface/byte_buffer.c
index fb39c4531d..03071ef92c 100644
--- a/src/core/surface/byte_buffer.c
+++ b/src/core/lib/surface/byte_buffer.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/src/core/surface/byte_buffer_reader.c b/src/core/lib/surface/byte_buffer_reader.c
index 4679854227..7248f5fe71 100644
--- a/src/core/surface/byte_buffer_reader.c
+++ b/src/core/lib/surface/byte_buffer_reader.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,17 +31,17 @@
  *
  */
 
-#include <string.h>
 #include <grpc/byte_buffer_reader.h>
+#include <string.h>
 
+#include <grpc/byte_buffer.h>
 #include <grpc/compression.h>
 #include <grpc/grpc.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/slice_buffer.h>
-#include <grpc/byte_buffer.h>
 
-#include "src/core/compression/message_compress.h"
+#include "src/core/lib/compression/message_compress.h"
 
 static int is_compressed(grpc_byte_buffer *buffer) {
   switch (buffer->type) {
diff --git a/src/core/surface/call.c b/src/core/lib/surface/call.c
index 6f1cd1df10..d63a4a7401 100644
--- a/src/core/surface/call.c
+++ b/src/core/lib/surface/call.c
@@ -43,16 +43,16 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/useful.h>
 
-#include "src/core/channel/channel_stack.h"
-#include "src/core/compression/algorithm_metadata.h"
-#include "src/core/iomgr/timer.h"
-#include "src/core/profiling/timers.h"
-#include "src/core/support/string.h"
-#include "src/core/surface/api_trace.h"
-#include "src/core/surface/call.h"
-#include "src/core/surface/channel.h"
-#include "src/core/surface/completion_queue.h"
-#include "src/core/transport/static_metadata.h"
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/compression/algorithm_metadata.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/support/string.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/surface/call.h"
+#include "src/core/lib/surface/channel.h"
+#include "src/core/lib/surface/completion_queue.h"
+#include "src/core/lib/transport/static_metadata.h"
 
 /** The maximum number of concurrent batches possible.
     Based upon the maximum number of individually queueable ops in the batch
diff --git a/src/core/surface/call.h b/src/core/lib/surface/call.h
index d2edf03d45..e2e75865be 100644
--- a/src/core/surface/call.h
+++ b/src/core/lib/surface/call.h
@@ -31,13 +31,13 @@
  *
  */
 
-#ifndef GRPC_CORE_SURFACE_CALL_H
-#define GRPC_CORE_SURFACE_CALL_H
+#ifndef GRPC_CORE_LIB_SURFACE_CALL_H
+#define GRPC_CORE_LIB_SURFACE_CALL_H
 
-#include "src/core/channel/channel_stack.h"
-#include "src/core/channel/context.h"
-#include "src/core/surface/api_trace.h"
-#include "src/core/surface/surface_trace.h"
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/channel/context.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/surface/surface_trace.h"
 
 #include <grpc/grpc.h>
 #include <grpc/impl/codegen/compression_types.h>
@@ -113,4 +113,4 @@ grpc_compression_algorithm grpc_call_compression_for_level(
 }
 #endif
 
-#endif /* GRPC_CORE_SURFACE_CALL_H */
+#endif /* GRPC_CORE_LIB_SURFACE_CALL_H */
diff --git a/src/core/surface/call_details.c b/src/core/lib/surface/call_details.c
index 60f0029819..08f606d84a 100644
--- a/src/core/surface/call_details.c
+++ b/src/core/lib/surface/call_details.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -36,7 +36,7 @@
 
 #include <string.h>
 
-#include "src/core/surface/api_trace.h"
+#include "src/core/lib/surface/api_trace.h"
 
 void grpc_call_details_init(grpc_call_details* cd) {
   GRPC_API_TRACE("grpc_call_details_init(cd=%p)", 1, (cd));
diff --git a/src/core/surface/call_log_batch.c b/src/core/lib/surface/call_log_batch.c
index 46756f418b..bc5a2ffb65 100644
--- a/src/core/surface/call_log_batch.c
+++ b/src/core/lib/surface/call_log_batch.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,11 +31,11 @@
  *
  */
 
-#include "src/core/surface/call.h"
+#include "src/core/lib/surface/call.h"
 
-#include "src/core/support/string.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/string_util.h>
+#include "src/core/lib/support/string.h"
 
 static void add_metadata(gpr_strvec *b, const grpc_metadata *md, size_t count) {
   size_t i;
diff --git a/src/core/surface/call_test_only.h b/src/core/lib/surface/call_test_only.h
index fdc43a383b..400214189e 100644
--- a/src/core/surface/call_test_only.h
+++ b/src/core/lib/surface/call_test_only.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_SURFACE_CALL_TEST_ONLY_H
-#define GRPC_CORE_SURFACE_CALL_TEST_ONLY_H
+#ifndef GRPC_CORE_LIB_SURFACE_CALL_TEST_ONLY_H
+#define GRPC_CORE_LIB_SURFACE_CALL_TEST_ONLY_H
 
 #include <grpc/grpc.h>
 
@@ -61,4 +61,4 @@ uint32_t grpc_call_test_only_get_encodings_accepted_by_peer(grpc_call *call);
 }
 #endif
 
-#endif /* GRPC_CORE_SURFACE_CALL_TEST_ONLY_H */
+#endif /* GRPC_CORE_LIB_SURFACE_CALL_TEST_ONLY_H */
diff --git a/src/core/surface/channel.c b/src/core/lib/surface/channel.c
index 964ab34431..d815daa70c 100644
--- a/src/core/surface/channel.c
+++ b/src/core/lib/surface/channel.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/surface/channel.h"
+#include "src/core/lib/surface/channel.h"
 
 #include <stdlib.h>
 #include <string.h>
@@ -40,14 +40,14 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 
-#include "src/core/surface/channel_init.h"
-#include "src/core/client_config/resolver_registry.h"
-#include "src/core/iomgr/iomgr.h"
-#include "src/core/support/string.h"
-#include "src/core/surface/api_trace.h"
-#include "src/core/surface/call.h"
-#include "src/core/surface/init.h"
-#include "src/core/transport/static_metadata.h"
+#include "src/core/lib/client_config/resolver_registry.h"
+#include "src/core/lib/iomgr/iomgr.h"
+#include "src/core/lib/support/string.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/surface/call.h"
+#include "src/core/lib/surface/channel_init.h"
+#include "src/core/lib/surface/init.h"
+#include "src/core/lib/transport/static_metadata.h"
 
 /** Cache grpc-status: X mdelems for X = 0..NUM_CACHED_STATUS_ELEMS.
  *  Avoids needing to take a metadata context lock for sending status
diff --git a/src/core/surface/channel.h b/src/core/lib/surface/channel.h
index c08988d9e7..09de0fccc9 100644
--- a/src/core/surface/channel.h
+++ b/src/core/lib/surface/channel.h
@@ -31,12 +31,12 @@
  *
  */
 
-#ifndef GRPC_CORE_SURFACE_CHANNEL_H
-#define GRPC_CORE_SURFACE_CHANNEL_H
+#ifndef GRPC_CORE_LIB_SURFACE_CHANNEL_H
+#define GRPC_CORE_LIB_SURFACE_CHANNEL_H
 
-#include "src/core/channel/channel_stack.h"
-#include "src/core/surface/channel_stack_type.h"
-#include "src/core/client_config/subchannel_factory.h"
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/client_config/subchannel_factory.h"
+#include "src/core/lib/surface/channel_stack_type.h"
 
 grpc_channel *grpc_channel_create(grpc_exec_ctx *exec_ctx, const char *target,
                                   const grpc_channel_args *args,
@@ -72,4 +72,4 @@ void grpc_channel_internal_unref(grpc_exec_ctx *exec_ctx,
   grpc_channel_internal_unref(exec_ctx, channel)
 #endif
 
-#endif /* GRPC_CORE_SURFACE_CHANNEL_H */
+#endif /* GRPC_CORE_LIB_SURFACE_CHANNEL_H */
diff --git a/src/core/surface/channel_connectivity.c b/src/core/lib/surface/channel_connectivity.c
index 2dd4fce26b..2f5d763e70 100644
--- a/src/core/surface/channel_connectivity.c
+++ b/src/core/lib/surface/channel_connectivity.c
@@ -31,16 +31,15 @@
  *
  */
 
-#include "src/core/surface/channel.h"
+#include "src/core/lib/surface/channel.h"
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 
-#include "src/core/channel/client_channel.h"
-#include "src/core/channel/client_uchannel.h"
-#include "src/core/iomgr/timer.h"
-#include "src/core/surface/api_trace.h"
-#include "src/core/surface/completion_queue.h"
+#include "src/core/lib/channel/client_channel.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/surface/completion_queue.h"
 
 grpc_connectivity_state grpc_channel_check_connectivity_state(
     grpc_channel *channel, int try_to_connect) {
@@ -58,12 +57,6 @@ grpc_connectivity_state grpc_channel_check_connectivity_state(
     grpc_exec_ctx_finish(&exec_ctx);
     return state;
   }
-  if (client_channel_elem->filter == &grpc_client_uchannel_filter) {
-    state = grpc_client_uchannel_check_connectivity_state(
-        &exec_ctx, client_channel_elem, try_to_connect);
-    grpc_exec_ctx_finish(&exec_ctx);
-    return state;
-  }
   gpr_log(GPR_ERROR,
           "grpc_channel_check_connectivity_state called on something that is "
           "not a (u)client channel, but '%s'",
@@ -98,9 +91,6 @@ static void delete_state_watcher(grpc_exec_ctx *exec_ctx, state_watcher *w) {
   if (client_channel_elem->filter == &grpc_client_channel_filter) {
     GRPC_CHANNEL_INTERNAL_UNREF(exec_ctx, w->channel,
                                 "watch_channel_connectivity");
-  } else if (client_channel_elem->filter == &grpc_client_uchannel_filter) {
-    GRPC_CHANNEL_INTERNAL_UNREF(exec_ctx, w->channel,
-                                "watch_uchannel_connectivity");
   } else {
     abort();
   }
@@ -209,11 +199,8 @@ void grpc_channel_watch_connectivity_state(
     grpc_client_channel_watch_connectivity_state(&exec_ctx, client_channel_elem,
                                                  grpc_cq_pollset(cq), &w->state,
                                                  &w->on_complete);
-  } else if (client_channel_elem->filter == &grpc_client_uchannel_filter) {
-    GRPC_CHANNEL_INTERNAL_REF(channel, "watch_uchannel_connectivity");
-    grpc_client_uchannel_watch_connectivity_state(
-        &exec_ctx, client_channel_elem, grpc_cq_pollset(cq), &w->state,
-        &w->on_complete);
+  } else {
+    abort();
   }
 
   grpc_exec_ctx_finish(&exec_ctx);
diff --git a/src/core/surface/channel_create.c b/src/core/lib/surface/channel_create.c
index 123447c8ed..e8777ce816 100644
--- a/src/core/surface/channel_create.c
+++ b/src/core/lib/surface/channel_create.c
@@ -40,16 +40,16 @@
 #include <grpc/support/slice.h>
 #include <grpc/support/slice_buffer.h>
 
-#include "src/core/census/grpc_filter.h"
-#include "src/core/channel/channel_args.h"
-#include "src/core/channel/client_channel.h"
-#include "src/core/channel/compress_filter.h"
-#include "src/core/channel/http_client_filter.h"
-#include "src/core/client_config/resolver_registry.h"
-#include "src/core/iomgr/tcp_client.h"
-#include "src/core/surface/api_trace.h"
-#include "src/core/surface/channel.h"
-#include "src/core/transport/chttp2_transport.h"
+#include "src/core/lib/census/grpc_filter.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/client_channel.h"
+#include "src/core/lib/channel/compress_filter.h"
+#include "src/core/lib/channel/http_client_filter.h"
+#include "src/core/lib/client_config/resolver_registry.h"
+#include "src/core/lib/iomgr/tcp_client.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/surface/channel.h"
+#include "src/core/lib/transport/chttp2_transport.h"
 
 typedef struct {
   grpc_connector base;
diff --git a/src/core/surface/channel_init.c b/src/core/lib/surface/channel_init.c
index 538be84696..fc69f61f77 100644
--- a/src/core/surface/channel_init.c
+++ b/src/core/lib/surface/channel_init.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/surface/channel_init.h"
+#include "src/core/lib/surface/channel_init.h"
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/useful.h>
@@ -112,8 +112,6 @@ static const char *name_for_type(grpc_channel_stack_type type) {
       return "CLIENT_SUBCHANNEL";
     case GRPC_SERVER_CHANNEL:
       return "SERVER_CHANNEL";
-    case GRPC_CLIENT_UCHANNEL:
-      return "CLIENT_UCHANNEL";
     case GRPC_CLIENT_LAME_CHANNEL:
       return "CLIENT_LAME_CHANNEL";
     case GRPC_CLIENT_DIRECT_CHANNEL:
diff --git a/src/core/surface/channel_init.h b/src/core/lib/surface/channel_init.h
index 06faef6ddb..a4d8271ca6 100644
--- a/src/core/surface/channel_init.h
+++ b/src/core/lib/surface/channel_init.h
@@ -31,12 +31,12 @@
  *
  */
 
-#ifndef GRPC_CORE_SURFACE_CHANNEL_INIT_H
-#define GRPC_CORE_SURFACE_CHANNEL_INIT_H
+#ifndef GRPC_CORE_LIB_SURFACE_CHANNEL_INIT_H
+#define GRPC_CORE_LIB_SURFACE_CHANNEL_INIT_H
 
-#include "src/core/channel/channel_stack_builder.h"
-#include "src/core/surface/channel_stack_type.h"
-#include "src/core/transport/transport.h"
+#include "src/core/lib/channel/channel_stack_builder.h"
+#include "src/core/lib/surface/channel_stack_type.h"
+#include "src/core/lib/transport/transport.h"
 
 /// This module provides a way for plugins (and the grpc core library itself)
 /// to register mutators for channel stacks.
@@ -83,4 +83,4 @@ void *grpc_channel_init_create_stack(
     const grpc_channel_args *args, int initial_refs, grpc_iomgr_cb_func destroy,
     void *destroy_arg, grpc_transport *optional_transport);
 
-#endif /* GRPC_CORE_SURFACE_CHANNEL_INIT_H */
+#endif /* GRPC_CORE_LIB_SURFACE_CHANNEL_INIT_H */
diff --git a/src/core/surface/channel_ping.c b/src/core/lib/surface/channel_ping.c
index 983f1c8a66..dd862cdadd 100644
--- a/src/core/surface/channel_ping.c
+++ b/src/core/lib/surface/channel_ping.c
@@ -31,15 +31,15 @@
  *
  */
 
-#include "src/core/surface/channel.h"
+#include "src/core/lib/surface/channel.h"
 
 #include <string.h>
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 
-#include "src/core/surface/api_trace.h"
-#include "src/core/surface/completion_queue.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/surface/completion_queue.h"
 
 typedef struct {
   grpc_closure closure;
diff --git a/src/core/surface/channel_stack_type.c b/src/core/lib/surface/channel_stack_type.c
index 6fd33d411d..c35d603ca3 100644
--- a/src/core/surface/channel_stack_type.c
+++ b/src/core/lib/surface/channel_stack_type.c
@@ -31,16 +31,14 @@
  *
  */
 
-#include <grpc/support/port_platform.h>
-#include "src/core/surface/channel_stack_type.h"
+#include "src/core/lib/surface/channel_stack_type.h"
 #include <grpc/support/log.h>
+#include <grpc/support/port_platform.h>
 
 bool grpc_channel_stack_type_is_client(grpc_channel_stack_type type) {
   switch (type) {
     case GRPC_CLIENT_CHANNEL:
       return true;
-    case GRPC_CLIENT_UCHANNEL:
-      return true;
     case GRPC_CLIENT_SUBCHANNEL:
       return true;
     case GRPC_CLIENT_LAME_CHANNEL:
diff --git a/src/core/surface/channel_stack_type.h b/src/core/lib/surface/channel_stack_type.h
index 846391a68a..16608fa386 100644
--- a/src/core/surface/channel_stack_type.h
+++ b/src/core/lib/surface/channel_stack_type.h
@@ -31,17 +31,14 @@
  *
  */
 
-#ifndef GRPC_CORE_SURFACE_CHANNEL_STACK_TYPE_H
-#define GRPC_CORE_SURFACE_CHANNEL_STACK_TYPE_H
+#ifndef GRPC_CORE_LIB_SURFACE_CHANNEL_STACK_TYPE_H
+#define GRPC_CORE_LIB_SURFACE_CHANNEL_STACK_TYPE_H
 
 #include <stdbool.h>
 
 typedef enum {
   // normal top-half client channel with load-balancing, connection management
   GRPC_CLIENT_CHANNEL,
-  // abbreviated top-half client channel bound to one subchannel - for internal
-  // load balancing implementation
-  GRPC_CLIENT_UCHANNEL,
   // bottom-half of a client channel: everything that happens post-load
   // balancing (bound to a specific transport)
   GRPC_CLIENT_SUBCHANNEL,
@@ -58,4 +55,4 @@ typedef enum {
 
 bool grpc_channel_stack_type_is_client(grpc_channel_stack_type type);
 
-#endif /* GRPC_CORE_SURFACE_CHANNEL_STACK_TYPE_H */
+#endif /* GRPC_CORE_LIB_SURFACE_CHANNEL_STACK_TYPE_H */
diff --git a/src/core/surface/completion_queue.c b/src/core/lib/surface/completion_queue.c
index b22818ea87..a0d7002053 100644
--- a/src/core/surface/completion_queue.c
+++ b/src/core/lib/surface/completion_queue.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/surface/completion_queue.h"
+#include "src/core/lib/surface/completion_queue.h"
 
 #include <stdio.h>
 #include <string.h>
@@ -41,14 +41,14 @@
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
 
-#include "src/core/iomgr/pollset.h"
-#include "src/core/iomgr/timer.h"
-#include "src/core/profiling/timers.h"
-#include "src/core/support/string.h"
-#include "src/core/surface/api_trace.h"
-#include "src/core/surface/call.h"
-#include "src/core/surface/event_string.h"
-#include "src/core/surface/surface_trace.h"
+#include "src/core/lib/iomgr/pollset.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/support/string.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/surface/call.h"
+#include "src/core/lib/surface/event_string.h"
+#include "src/core/lib/surface/surface_trace.h"
 
 typedef struct {
   grpc_pollset_worker **worker;
diff --git a/src/core/surface/completion_queue.h b/src/core/lib/surface/completion_queue.h
index 07f6d0c8f6..35591cb6f4 100644
--- a/src/core/surface/completion_queue.h
+++ b/src/core/lib/surface/completion_queue.h
@@ -31,13 +31,13 @@
  *
  */
 
-#ifndef GRPC_CORE_SURFACE_COMPLETION_QUEUE_H
-#define GRPC_CORE_SURFACE_COMPLETION_QUEUE_H
+#ifndef GRPC_CORE_LIB_SURFACE_COMPLETION_QUEUE_H
+#define GRPC_CORE_LIB_SURFACE_COMPLETION_QUEUE_H
 
 /* Internal API for completion queues */
 
-#include "src/core/iomgr/pollset.h"
 #include <grpc/grpc.h>
+#include "src/core/lib/iomgr/pollset.h"
 
 typedef struct grpc_cq_completion {
   /** user supplied tag */
@@ -88,4 +88,4 @@ int grpc_cq_is_server_cq(grpc_completion_queue *cc);
 void grpc_cq_global_init(void);
 void grpc_cq_global_shutdown(void);
 
-#endif /* GRPC_CORE_SURFACE_COMPLETION_QUEUE_H */
+#endif /* GRPC_CORE_LIB_SURFACE_COMPLETION_QUEUE_H */
diff --git a/src/core/surface/event_string.c b/src/core/lib/surface/event_string.c
index 33cd4a43aa..360c718a17 100644
--- a/src/core/surface/event_string.c
+++ b/src/core/lib/surface/event_string.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,13 +31,13 @@
  *
  */
 
-#include "src/core/surface/event_string.h"
+#include "src/core/lib/surface/event_string.h"
 
 #include <stdio.h>
 
-#include "src/core/support/string.h"
 #include <grpc/byte_buffer.h>
 #include <grpc/support/string_util.h>
+#include "src/core/lib/support/string.h"
 
 static void addhdr(gpr_strvec *buf, grpc_event *ev) {
   char *tmp;
diff --git a/src/core/surface/event_string.h b/src/core/lib/surface/event_string.h
index d0598cecca..577e9c718f 100644
--- a/src/core/surface/event_string.h
+++ b/src/core/lib/surface/event_string.h
@@ -31,12 +31,12 @@
  *
  */
 
-#ifndef GRPC_CORE_SURFACE_EVENT_STRING_H
-#define GRPC_CORE_SURFACE_EVENT_STRING_H
+#ifndef GRPC_CORE_LIB_SURFACE_EVENT_STRING_H
+#define GRPC_CORE_LIB_SURFACE_EVENT_STRING_H
 
 #include <grpc/grpc.h>
 
 /* Returns a string describing an event. Must be later freed with gpr_free() */
 char *grpc_event_string(grpc_event *ev);
 
-#endif /* GRPC_CORE_SURFACE_EVENT_STRING_H */
+#endif /* GRPC_CORE_LIB_SURFACE_EVENT_STRING_H */
diff --git a/src/core/surface/init.c b/src/core/lib/surface/init.c
index b50770959f..dcb9c62d36 100644
--- a/src/core/surface/init.c
+++ b/src/core/lib/surface/init.c
@@ -40,37 +40,36 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/time.h>
 /* TODO(ctiller): find another way? - better not to include census here */
-#include "src/core/census/grpc_plugin.h"
-#include "src/core/channel/channel_stack.h"
-#include "src/core/channel/compress_filter.h"
-#include "src/core/channel/connected_channel.h"
-#include "src/core/channel/client_channel.h"
-#include "src/core/channel/client_uchannel.h"
-#include "src/core/channel/http_client_filter.h"
-#include "src/core/channel/http_server_filter.h"
-#include "src/core/client_config/lb_policy_registry.h"
-#include "src/core/client_config/lb_policies/pick_first.h"
-#include "src/core/client_config/lb_policies/round_robin.h"
-#include "src/core/client_config/resolver_registry.h"
-#include "src/core/client_config/resolvers/dns_resolver.h"
-#include "src/core/client_config/resolvers/sockaddr_resolver.h"
-#include "src/core/client_config/subchannel.h"
-#include "src/core/client_config/subchannel_index.h"
-#include "src/core/debug/trace.h"
-#include "src/core/iomgr/executor.h"
-#include "src/core/iomgr/iomgr.h"
-#include "src/core/profiling/timers.h"
-#include "src/core/surface/api_trace.h"
-#include "src/core/surface/call.h"
-#include "src/core/surface/channel_init.h"
-#include "src/core/surface/completion_queue.h"
-#include "src/core/surface/init.h"
-#include "src/core/surface/lame_client.h"
-#include "src/core/surface/server.h"
-#include "src/core/surface/surface_trace.h"
-#include "src/core/transport/chttp2_transport.h"
-#include "src/core/transport/connectivity_state.h"
-#include "src/core/transport/transport_impl.h"
+#include "src/core/lib/census/grpc_plugin.h"
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/channel/client_channel.h"
+#include "src/core/lib/channel/compress_filter.h"
+#include "src/core/lib/channel/connected_channel.h"
+#include "src/core/lib/channel/http_client_filter.h"
+#include "src/core/lib/channel/http_server_filter.h"
+#include "src/core/lib/client_config/lb_policies/pick_first.h"
+#include "src/core/lib/client_config/lb_policies/round_robin.h"
+#include "src/core/lib/client_config/lb_policy_registry.h"
+#include "src/core/lib/client_config/resolver_registry.h"
+#include "src/core/lib/client_config/resolvers/dns_resolver.h"
+#include "src/core/lib/client_config/resolvers/sockaddr_resolver.h"
+#include "src/core/lib/client_config/subchannel.h"
+#include "src/core/lib/client_config/subchannel_index.h"
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/iomgr/executor.h"
+#include "src/core/lib/iomgr/iomgr.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/surface/call.h"
+#include "src/core/lib/surface/channel_init.h"
+#include "src/core/lib/surface/completion_queue.h"
+#include "src/core/lib/surface/init.h"
+#include "src/core/lib/surface/lame_client.h"
+#include "src/core/lib/surface/server.h"
+#include "src/core/lib/surface/surface_trace.h"
+#include "src/core/lib/transport/chttp2_transport.h"
+#include "src/core/lib/transport/connectivity_state.h"
+#include "src/core/lib/transport/transport_impl.h"
 
 #ifndef GRPC_DEFAULT_NAME_PREFIX
 #define GRPC_DEFAULT_NAME_PREFIX "dns:///"
@@ -90,18 +89,21 @@ static void do_basic_init(void) {
 }
 
 static bool append_filter(grpc_channel_stack_builder *builder, void *arg) {
-  return grpc_channel_stack_builder_append_filter(builder, arg, NULL, NULL);
+  return grpc_channel_stack_builder_append_filter(
+      builder, (const grpc_channel_filter *)arg, NULL, NULL);
 }
 
 static bool prepend_filter(grpc_channel_stack_builder *builder, void *arg) {
-  return grpc_channel_stack_builder_prepend_filter(builder, arg, NULL, NULL);
+  return grpc_channel_stack_builder_prepend_filter(
+      builder, (const grpc_channel_filter *)arg, NULL, NULL);
 }
 
 static bool maybe_add_http_filter(grpc_channel_stack_builder *builder,
                                   void *arg) {
   grpc_transport *t = grpc_channel_stack_builder_get_transport(builder);
   if (t && strstr(t->vtable->name, "http")) {
-    return grpc_channel_stack_builder_prepend_filter(builder, arg, NULL, NULL);
+    return grpc_channel_stack_builder_prepend_filter(
+        builder, (const grpc_channel_filter *)arg, NULL, NULL);
   }
   return true;
 }
@@ -112,9 +114,6 @@ static void register_builtin_channel_init() {
   grpc_channel_init_register_stage(GRPC_CLIENT_DIRECT_CHANNEL, INT_MAX,
                                    prepend_filter,
                                    (void *)&grpc_compress_filter);
-  grpc_channel_init_register_stage(GRPC_CLIENT_UCHANNEL, INT_MAX,
-                                   prepend_filter,
-                                   (void *)&grpc_compress_filter);
   grpc_channel_init_register_stage(GRPC_SERVER_CHANNEL, INT_MAX, prepend_filter,
                                    (void *)&grpc_compress_filter);
   grpc_channel_init_register_stage(GRPC_CLIENT_SUBCHANNEL, INT_MAX,
@@ -134,8 +133,6 @@ static void register_builtin_channel_init() {
                                    grpc_add_connected_filter, NULL);
   grpc_channel_init_register_stage(GRPC_CLIENT_CHANNEL, INT_MAX, append_filter,
                                    (void *)&grpc_client_channel_filter);
-  grpc_channel_init_register_stage(GRPC_CLIENT_UCHANNEL, INT_MAX, append_filter,
-                                   (void *)&grpc_client_uchannel_filter);
   grpc_channel_init_register_stage(GRPC_CLIENT_LAME_CHANNEL, INT_MAX,
                                    append_filter, (void *)&grpc_lame_filter);
   grpc_channel_init_register_stage(GRPC_SERVER_CHANNEL, INT_MAX, prepend_filter,
diff --git a/src/core/surface/init.h b/src/core/lib/surface/init.h
index 5e358c7022..10e2a5896e 100644
--- a/src/core/surface/init.h
+++ b/src/core/lib/surface/init.h
@@ -31,11 +31,11 @@
  *
  */
 
-#ifndef GRPC_CORE_SURFACE_INIT_H
-#define GRPC_CORE_SURFACE_INIT_H
+#ifndef GRPC_CORE_LIB_SURFACE_INIT_H
+#define GRPC_CORE_LIB_SURFACE_INIT_H
 
 void grpc_register_security_filters(void);
 void grpc_security_pre_init(void);
 int grpc_is_initialized(void);
 
-#endif /* GRPC_CORE_SURFACE_INIT_H */
+#endif /* GRPC_CORE_LIB_SURFACE_INIT_H */
diff --git a/src/core/surface/init_secure.c b/src/core/lib/surface/init_secure.c
index 311dda9864..d3c2f645a7 100644
--- a/src/core/surface/init_secure.c
+++ b/src/core/lib/surface/init_secure.c
@@ -31,18 +31,18 @@
  *
  */
 
-#include "src/core/surface/init.h"
+#include "src/core/lib/surface/init.h"
 
 #include <limits.h>
 #include <string.h>
 
-#include "src/core/surface/channel_init.h"
-#include "src/core/debug/trace.h"
-#include "src/core/security/auth_filters.h"
-#include "src/core/security/credentials.h"
-#include "src/core/security/secure_endpoint.h"
-#include "src/core/security/security_connector.h"
-#include "src/core/tsi/transport_security_interface.h"
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/security/auth_filters.h"
+#include "src/core/lib/security/credentials.h"
+#include "src/core/lib/security/secure_endpoint.h"
+#include "src/core/lib/security/security_connector.h"
+#include "src/core/lib/surface/channel_init.h"
+#include "src/core/lib/tsi/transport_security_interface.h"
 
 void grpc_security_pre_init(void) {
   grpc_register_tracer("secure_endpoint", &grpc_trace_secure_endpoint);
diff --git a/src/core/surface/init_unsecure.c b/src/core/lib/surface/init_unsecure.c
index 278fcc83ac..243c005d86 100644
--- a/src/core/surface/init_unsecure.c
+++ b/src/core/lib/surface/init_unsecure.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/surface/init.h"
+#include "src/core/lib/surface/init.h"
 
 void grpc_security_pre_init(void) {}
 
diff --git a/src/core/surface/lame_client.c b/src/core/lib/surface/lame_client.c
index 58f89946d2..95ec4b06c3 100644
--- a/src/core/surface/lame_client.c
+++ b/src/core/lib/surface/lame_client.c
@@ -31,19 +31,19 @@
  *
  */
 
-#include "src/core/surface/lame_client.h"
+#include "src/core/lib/surface/lame_client.h"
 
 #include <grpc/grpc.h>
 
 #include <string.h>
 
-#include "src/core/channel/channel_stack.h"
-#include "src/core/support/string.h"
-#include "src/core/surface/api_trace.h"
-#include "src/core/surface/channel.h"
-#include "src/core/surface/call.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/support/string.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/surface/call.h"
+#include "src/core/lib/surface/channel.h"
 
 typedef struct {
   grpc_linked_mdelem status;
@@ -118,10 +118,17 @@ static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
                                  grpc_channel_element *elem) {}
 
 const grpc_channel_filter grpc_lame_filter = {
-    lame_start_transport_stream_op, lame_start_transport_op, sizeof(call_data),
-    init_call_elem, grpc_call_stack_ignore_set_pollset, destroy_call_elem,
-    sizeof(channel_data), init_channel_elem, destroy_channel_elem,
-    lame_get_peer, "lame-client",
+    lame_start_transport_stream_op,
+    lame_start_transport_op,
+    sizeof(call_data),
+    init_call_elem,
+    grpc_call_stack_ignore_set_pollset,
+    destroy_call_elem,
+    sizeof(channel_data),
+    init_channel_elem,
+    destroy_channel_elem,
+    lame_get_peer,
+    "lame-client",
 };
 
 #define CHANNEL_STACK_FROM_CHANNEL(c) ((grpc_channel_stack *)((c) + 1))
diff --git a/src/core/surface/lame_client.h b/src/core/lib/surface/lame_client.h
index 3f3abd2ffe..5f6ea34d4b 100644
--- a/src/core/surface/lame_client.h
+++ b/src/core/lib/surface/lame_client.h
@@ -31,11 +31,11 @@
  *
  */
 
-#ifndef GRPC_CORE_SURFACE_LAME_CLIENT_H
-#define GRPC_CORE_SURFACE_LAME_CLIENT_H
+#ifndef GRPC_CORE_LIB_SURFACE_LAME_CLIENT_H
+#define GRPC_CORE_LIB_SURFACE_LAME_CLIENT_H
 
-#include "src/core/channel/channel_stack.h"
+#include "src/core/lib/channel/channel_stack.h"
 
 extern const grpc_channel_filter grpc_lame_filter;
 
-#endif /* GRPC_CORE_SURFACE_LAME_CLIENT_H */
+#endif /* GRPC_CORE_LIB_SURFACE_LAME_CLIENT_H */
diff --git a/src/core/surface/metadata_array.c b/src/core/lib/surface/metadata_array.c
index 4c7bf17835..4436f2da87 100644
--- a/src/core/surface/metadata_array.c
+++ b/src/core/lib/surface/metadata_array.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -36,7 +36,7 @@
 
 #include <string.h>
 
-#include "src/core/surface/api_trace.h"
+#include "src/core/lib/surface/api_trace.h"
 
 void grpc_metadata_array_init(grpc_metadata_array* array) {
   GRPC_API_TRACE("grpc_metadata_array_init(array=%p)", 1, (array));
diff --git a/src/core/surface/secure_channel_create.c b/src/core/lib/surface/secure_channel_create.c
index cc752227ee..dcb367023e 100644
--- a/src/core/surface/secure_channel_create.c
+++ b/src/core/lib/surface/secure_channel_create.c
@@ -40,17 +40,17 @@
 #include <grpc/support/slice.h>
 #include <grpc/support/slice_buffer.h>
 
-#include "src/core/channel/channel_args.h"
-#include "src/core/channel/client_channel.h"
-#include "src/core/client_config/resolver_registry.h"
-#include "src/core/iomgr/tcp_client.h"
-#include "src/core/security/auth_filters.h"
-#include "src/core/security/credentials.h"
-#include "src/core/security/security_context.h"
-#include "src/core/surface/api_trace.h"
-#include "src/core/surface/channel.h"
-#include "src/core/transport/chttp2_transport.h"
-#include "src/core/tsi/transport_security_interface.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/client_channel.h"
+#include "src/core/lib/client_config/resolver_registry.h"
+#include "src/core/lib/iomgr/tcp_client.h"
+#include "src/core/lib/security/auth_filters.h"
+#include "src/core/lib/security/credentials.h"
+#include "src/core/lib/security/security_context.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/surface/channel.h"
+#include "src/core/lib/transport/chttp2_transport.h"
+#include "src/core/lib/tsi/transport_security_interface.h"
 
 typedef struct {
   grpc_connector base;
diff --git a/src/core/surface/server.c b/src/core/lib/surface/server.c
index da93474b26..080734e9d5 100644
--- a/src/core/surface/server.c
+++ b/src/core/lib/surface/server.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/surface/server.h"
+#include "src/core/lib/surface/server.h"
 
 #include <limits.h>
 #include <stdlib.h>
@@ -42,18 +42,18 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/useful.h>
 
-#include "src/core/channel/channel_args.h"
-#include "src/core/channel/connected_channel.h"
-#include "src/core/iomgr/iomgr.h"
-#include "src/core/support/stack_lockfree.h"
-#include "src/core/support/string.h"
-#include "src/core/surface/api_trace.h"
-#include "src/core/surface/call.h"
-#include "src/core/surface/channel.h"
-#include "src/core/surface/completion_queue.h"
-#include "src/core/surface/init.h"
-#include "src/core/transport/metadata.h"
-#include "src/core/transport/static_metadata.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/connected_channel.h"
+#include "src/core/lib/iomgr/iomgr.h"
+#include "src/core/lib/support/stack_lockfree.h"
+#include "src/core/lib/support/string.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/surface/call.h"
+#include "src/core/lib/surface/channel.h"
+#include "src/core/lib/surface/completion_queue.h"
+#include "src/core/lib/surface/init.h"
+#include "src/core/lib/transport/metadata.h"
+#include "src/core/lib/transport/static_metadata.h"
 
 typedef struct listener {
   void *arg;
@@ -754,10 +754,17 @@ static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
 }
 
 const grpc_channel_filter grpc_server_top_filter = {
-    server_start_transport_stream_op, grpc_channel_next_op, sizeof(call_data),
-    init_call_elem, grpc_call_stack_ignore_set_pollset, destroy_call_elem,
-    sizeof(channel_data), init_channel_elem, destroy_channel_elem,
-    grpc_call_next_get_peer, "server",
+    server_start_transport_stream_op,
+    grpc_channel_next_op,
+    sizeof(call_data),
+    init_call_elem,
+    grpc_call_stack_ignore_set_pollset,
+    destroy_call_elem,
+    sizeof(channel_data),
+    init_channel_elem,
+    destroy_channel_elem,
+    grpc_call_next_get_peer,
+    "server",
 };
 
 void grpc_server_register_completion_queue(grpc_server *server,
@@ -895,7 +902,8 @@ void grpc_server_setup_transport(grpc_exec_ctx *exec_ctx, grpc_server *s,
   channel =
       grpc_channel_create(exec_ctx, NULL, args, GRPC_SERVER_CHANNEL, transport);
   chand = (channel_data *)grpc_channel_stack_element(
-              grpc_channel_get_channel_stack(channel), 0)->channel_data;
+              grpc_channel_get_channel_stack(channel), 0)
+              ->channel_data;
   chand->server = s;
   server_ref(s);
   chand->channel = channel;
@@ -916,7 +924,7 @@ void grpc_server_setup_transport(grpc_exec_ctx *exec_ctx, grpc_server *s,
       method = grpc_mdstr_from_string(rm->method);
       hash = GRPC_MDSTR_KV_HASH(host ? host->hash : 0, method->hash);
       for (probes = 0; chand->registered_methods[(hash + probes) % slots]
-                               .server_registered_method != NULL;
+                           .server_registered_method != NULL;
            probes++)
         ;
       if (probes > max_probes) max_probes = probes;
diff --git a/src/core/surface/server.h b/src/core/lib/surface/server.h
index cd62eadd7f..3845eb2981 100644
--- a/src/core/surface/server.h
+++ b/src/core/lib/surface/server.h
@@ -31,12 +31,12 @@
  *
  */
 
-#ifndef GRPC_CORE_SURFACE_SERVER_H
-#define GRPC_CORE_SURFACE_SERVER_H
+#ifndef GRPC_CORE_LIB_SURFACE_SERVER_H
+#define GRPC_CORE_LIB_SURFACE_SERVER_H
 
 #include <grpc/grpc.h>
-#include "src/core/channel/channel_stack.h"
-#include "src/core/transport/transport.h"
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/transport/transport.h"
 
 extern const grpc_channel_filter grpc_server_top_filter;
 
@@ -59,4 +59,4 @@ const grpc_channel_args *grpc_server_get_channel_args(grpc_server *server);
 
 int grpc_server_has_open_connections(grpc_server *server);
 
-#endif /* GRPC_CORE_SURFACE_SERVER_H */
+#endif /* GRPC_CORE_LIB_SURFACE_SERVER_H */
diff --git a/src/core/surface/server_chttp2.c b/src/core/lib/surface/server_chttp2.c
index ff2840f655..f0c2ee5153 100644
--- a/src/core/surface/server_chttp2.c
+++ b/src/core/lib/surface/server_chttp2.c
@@ -33,15 +33,15 @@
 
 #include <grpc/grpc.h>
 
-#include "src/core/channel/http_server_filter.h"
-#include "src/core/iomgr/resolve_address.h"
-#include "src/core/iomgr/tcp_server.h"
-#include "src/core/surface/api_trace.h"
-#include "src/core/surface/server.h"
-#include "src/core/transport/chttp2_transport.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/useful.h>
+#include "src/core/lib/channel/http_server_filter.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/iomgr/tcp_server.h"
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/surface/server.h"
+#include "src/core/lib/transport/chttp2_transport.h"
 
 static void setup_transport(grpc_exec_ctx *exec_ctx, void *server,
                             grpc_transport *transport) {
diff --git a/src/core/surface/surface_trace.h b/src/core/lib/surface/surface_trace.h
index ed820ebd05..6b3f673924 100644
--- a/src/core/surface/surface_trace.h
+++ b/src/core/lib/surface/surface_trace.h
@@ -31,12 +31,12 @@
  *
  */
 
-#ifndef GRPC_CORE_SURFACE_SURFACE_TRACE_H
-#define GRPC_CORE_SURFACE_SURFACE_TRACE_H
+#ifndef GRPC_CORE_LIB_SURFACE_SURFACE_TRACE_H
+#define GRPC_CORE_LIB_SURFACE_SURFACE_TRACE_H
 
-#include "src/core/debug/trace.h"
-#include "src/core/surface/api_trace.h"
 #include <grpc/support/log.h>
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/surface/api_trace.h"
 
 #define GRPC_SURFACE_TRACE_RETURNED_EVENT(cq, event)    \
   if (grpc_api_trace) {                                 \
@@ -45,4 +45,4 @@
     gpr_free(_ev);                                      \
   }
 
-#endif /* GRPC_CORE_SURFACE_SURFACE_TRACE_H */
+#endif /* GRPC_CORE_LIB_SURFACE_SURFACE_TRACE_H */
diff --git a/src/core/surface/validate_metadata.c b/src/core/lib/surface/validate_metadata.c
index bf4126867f..bf4126867f 100644
--- a/src/core/surface/validate_metadata.c
+++ b/src/core/lib/surface/validate_metadata.c
diff --git a/src/core/surface/version.c b/src/core/lib/surface/version.c
index 7723f39401..7723f39401 100644
--- a/src/core/surface/version.c
+++ b/src/core/lib/surface/version.c
diff --git a/src/core/transport/byte_stream.c b/src/core/lib/transport/byte_stream.c
index 8e6fb2cbef..79981aa154 100644
--- a/src/core/transport/byte_stream.c
+++ b/src/core/lib/transport/byte_stream.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/transport/byte_stream.h"
+#include "src/core/lib/transport/byte_stream.h"
 
 #include <stdlib.h>
 
diff --git a/src/core/transport/byte_stream.h b/src/core/lib/transport/byte_stream.h
index b8d0ade2b5..e7346dafc3 100644
--- a/src/core/transport/byte_stream.h
+++ b/src/core/lib/transport/byte_stream.h
@@ -31,11 +31,11 @@
  *
  */
 
-#ifndef GRPC_CORE_TRANSPORT_BYTE_STREAM_H
-#define GRPC_CORE_TRANSPORT_BYTE_STREAM_H
+#ifndef GRPC_CORE_LIB_TRANSPORT_BYTE_STREAM_H
+#define GRPC_CORE_LIB_TRANSPORT_BYTE_STREAM_H
 
-#include "src/core/iomgr/exec_ctx.h"
 #include <grpc/support/slice_buffer.h>
+#include "src/core/lib/iomgr/exec_ctx.h"
 
 /** Internal bit flag for grpc_begin_message's \a flags signaling the use of
  * compression for the message */
@@ -86,4 +86,4 @@ void grpc_slice_buffer_stream_init(grpc_slice_buffer_stream *stream,
                                    gpr_slice_buffer *slice_buffer,
                                    uint32_t flags);
 
-#endif /* GRPC_CORE_TRANSPORT_BYTE_STREAM_H */
+#endif /* GRPC_CORE_LIB_TRANSPORT_BYTE_STREAM_H */
diff --git a/src/core/transport/chttp2/alpn.c b/src/core/lib/transport/chttp2/alpn.c
index 69da4e6718..befe319180 100644
--- a/src/core/transport/chttp2/alpn.c
+++ b/src/core/lib/transport/chttp2/alpn.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/transport/chttp2/alpn.h"
+#include "src/core/lib/transport/chttp2/alpn.h"
 #include <grpc/support/log.h>
 #include <grpc/support/useful.h>
 
diff --git a/src/core/transport/chttp2/alpn.h b/src/core/lib/transport/chttp2/alpn.h
index 68010e3155..a9184e63a4 100644
--- a/src/core/transport/chttp2/alpn.h
+++ b/src/core/lib/transport/chttp2/alpn.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_TRANSPORT_CHTTP2_ALPN_H
-#define GRPC_CORE_TRANSPORT_CHTTP2_ALPN_H
+#ifndef GRPC_CORE_LIB_TRANSPORT_CHTTP2_ALPN_H
+#define GRPC_CORE_LIB_TRANSPORT_CHTTP2_ALPN_H
 
 #include <string.h>
 
@@ -46,4 +46,4 @@ size_t grpc_chttp2_num_alpn_versions(void);
  * grpc_chttp2_num_alpn_versions()) */
 const char *grpc_chttp2_get_alpn_version_index(size_t i);
 
-#endif /* GRPC_CORE_TRANSPORT_CHTTP2_ALPN_H */
+#endif /* GRPC_CORE_LIB_TRANSPORT_CHTTP2_ALPN_H */
diff --git a/src/core/transport/chttp2/bin_encoder.c b/src/core/lib/transport/chttp2/bin_encoder.c
index f26bc7e29b..79d0aa3d6f 100644
--- a/src/core/transport/chttp2/bin_encoder.c
+++ b/src/core/lib/transport/chttp2/bin_encoder.c
@@ -31,12 +31,12 @@
  *
  */
 
-#include "src/core/transport/chttp2/bin_encoder.h"
+#include "src/core/lib/transport/chttp2/bin_encoder.h"
 
 #include <string.h>
 
-#include "src/core/transport/chttp2/huffsyms.h"
 #include <grpc/support/log.h>
+#include "src/core/lib/transport/chttp2/huffsyms.h"
 
 static const char alphabet[] =
     "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
@@ -46,70 +46,18 @@ typedef struct {
   uint8_t length;
 } b64_huff_sym;
 
-static const b64_huff_sym huff_alphabet[64] = {{0x21, 6},
-                                               {0x5d, 7},
-                                               {0x5e, 7},
-                                               {0x5f, 7},
-                                               {0x60, 7},
-                                               {0x61, 7},
-                                               {0x62, 7},
-                                               {0x63, 7},
-                                               {0x64, 7},
-                                               {0x65, 7},
-                                               {0x66, 7},
-                                               {0x67, 7},
-                                               {0x68, 7},
-                                               {0x69, 7},
-                                               {0x6a, 7},
-                                               {0x6b, 7},
-                                               {0x6c, 7},
-                                               {0x6d, 7},
-                                               {0x6e, 7},
-                                               {0x6f, 7},
-                                               {0x70, 7},
-                                               {0x71, 7},
-                                               {0x72, 7},
-                                               {0xfc, 8},
-                                               {0x73, 7},
-                                               {0xfd, 8},
-                                               {0x3, 5},
-                                               {0x23, 6},
-                                               {0x4, 5},
-                                               {0x24, 6},
-                                               {0x5, 5},
-                                               {0x25, 6},
-                                               {0x26, 6},
-                                               {0x27, 6},
-                                               {0x6, 5},
-                                               {0x74, 7},
-                                               {0x75, 7},
-                                               {0x28, 6},
-                                               {0x29, 6},
-                                               {0x2a, 6},
-                                               {0x7, 5},
-                                               {0x2b, 6},
-                                               {0x76, 7},
-                                               {0x2c, 6},
-                                               {0x8, 5},
-                                               {0x9, 5},
-                                               {0x2d, 6},
-                                               {0x77, 7},
-                                               {0x78, 7},
-                                               {0x79, 7},
-                                               {0x7a, 7},
-                                               {0x7b, 7},
-                                               {0x0, 5},
-                                               {0x1, 5},
-                                               {0x2, 5},
-                                               {0x19, 6},
-                                               {0x1a, 6},
-                                               {0x1b, 6},
-                                               {0x1c, 6},
-                                               {0x1d, 6},
-                                               {0x1e, 6},
-                                               {0x1f, 6},
-                                               {0x7fb, 11},
-                                               {0x18, 6}};
+static const b64_huff_sym huff_alphabet[64] = {
+    {0x21, 6}, {0x5d, 7}, {0x5e, 7},   {0x5f, 7}, {0x60, 7}, {0x61, 7},
+    {0x62, 7}, {0x63, 7}, {0x64, 7},   {0x65, 7}, {0x66, 7}, {0x67, 7},
+    {0x68, 7}, {0x69, 7}, {0x6a, 7},   {0x6b, 7}, {0x6c, 7}, {0x6d, 7},
+    {0x6e, 7}, {0x6f, 7}, {0x70, 7},   {0x71, 7}, {0x72, 7}, {0xfc, 8},
+    {0x73, 7}, {0xfd, 8}, {0x3, 5},    {0x23, 6}, {0x4, 5},  {0x24, 6},
+    {0x5, 5},  {0x25, 6}, {0x26, 6},   {0x27, 6}, {0x6, 5},  {0x74, 7},
+    {0x75, 7}, {0x28, 6}, {0x29, 6},   {0x2a, 6}, {0x7, 5},  {0x2b, 6},
+    {0x76, 7}, {0x2c, 6}, {0x8, 5},    {0x9, 5},  {0x2d, 6}, {0x77, 7},
+    {0x78, 7}, {0x79, 7}, {0x7a, 7},   {0x7b, 7}, {0x0, 5},  {0x1, 5},
+    {0x2, 5},  {0x19, 6}, {0x1a, 6},   {0x1b, 6}, {0x1c, 6}, {0x1d, 6},
+    {0x1e, 6}, {0x1f, 6}, {0x7fb, 11}, {0x18, 6}};
 
 static const uint8_t tail_xtra[3] = {0, 2, 3};
 
diff --git a/src/core/transport/chttp2/bin_encoder.h b/src/core/lib/transport/chttp2/bin_encoder.h
index edb6f2dad1..1c5cd1e1c6 100644
--- a/src/core/transport/chttp2/bin_encoder.h
+++ b/src/core/lib/transport/chttp2/bin_encoder.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_TRANSPORT_CHTTP2_BIN_ENCODER_H
-#define GRPC_CORE_TRANSPORT_CHTTP2_BIN_ENCODER_H
+#ifndef GRPC_CORE_LIB_TRANSPORT_CHTTP2_BIN_ENCODER_H
+#define GRPC_CORE_LIB_TRANSPORT_CHTTP2_BIN_ENCODER_H
 
 #include <grpc/support/slice.h>
 
@@ -51,4 +51,4 @@ gpr_slice grpc_chttp2_huffman_compress(gpr_slice input);
    return y; */
 gpr_slice grpc_chttp2_base64_encode_and_huffman_compress(gpr_slice input);
 
-#endif /* GRPC_CORE_TRANSPORT_CHTTP2_BIN_ENCODER_H */
+#endif /* GRPC_CORE_LIB_TRANSPORT_CHTTP2_BIN_ENCODER_H */
diff --git a/src/core/transport/chttp2/frame.h b/src/core/lib/transport/chttp2/frame.h
index 560a6675af..4674bc9703 100644
--- a/src/core/transport/chttp2/frame.h
+++ b/src/core/lib/transport/chttp2/frame.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_TRANSPORT_CHTTP2_FRAME_H
-#define GRPC_CORE_TRANSPORT_CHTTP2_FRAME_H
+#ifndef GRPC_CORE_LIB_TRANSPORT_CHTTP2_FRAME_H
+#define GRPC_CORE_LIB_TRANSPORT_CHTTP2_FRAME_H
 
 #include <grpc/support/port_platform.h>
 #include <grpc/support/slice.h>
@@ -66,4 +66,4 @@ typedef struct grpc_chttp2_transport_parsing grpc_chttp2_transport_parsing;
 #define GRPC_CHTTP2_DATA_FLAG_PADDED 8
 #define GRPC_CHTTP2_FLAG_HAS_PRIORITY 0x20
 
-#endif /* GRPC_CORE_TRANSPORT_CHTTP2_FRAME_H */
+#endif /* GRPC_CORE_LIB_TRANSPORT_CHTTP2_FRAME_H */
diff --git a/src/core/transport/chttp2/frame_data.c b/src/core/lib/transport/chttp2/frame_data.c
index f9a1af8873..cf25c3ccc1 100644
--- a/src/core/transport/chttp2/frame_data.c
+++ b/src/core/lib/transport/chttp2/frame_data.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,16 +31,16 @@
  *
  */
 
-#include "src/core/transport/chttp2/frame_data.h"
+#include "src/core/lib/transport/chttp2/frame_data.h"
 
 #include <string.h>
 
-#include "src/core/transport/chttp2/internal.h"
-#include "src/core/support/string.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/useful.h>
-#include "src/core/transport/transport.h"
+#include "src/core/lib/support/string.h"
+#include "src/core/lib/transport/chttp2/internal.h"
+#include "src/core/lib/transport/transport.h"
 
 grpc_chttp2_parse_error grpc_chttp2_data_parser_init(
     grpc_chttp2_data_parser *parser) {
diff --git a/src/core/transport/chttp2/frame_data.h b/src/core/lib/transport/chttp2/frame_data.h
index 92929d5c97..da404a42c6 100644
--- a/src/core/transport/chttp2/frame_data.h
+++ b/src/core/lib/transport/chttp2/frame_data.h
@@ -31,16 +31,16 @@
  *
  */
 
-#ifndef GRPC_CORE_TRANSPORT_CHTTP2_FRAME_DATA_H
-#define GRPC_CORE_TRANSPORT_CHTTP2_FRAME_DATA_H
+#ifndef GRPC_CORE_LIB_TRANSPORT_CHTTP2_FRAME_DATA_H
+#define GRPC_CORE_LIB_TRANSPORT_CHTTP2_FRAME_DATA_H
 
 /* Parser for GRPC streams embedded in DATA frames */
 
-#include "src/core/iomgr/exec_ctx.h"
 #include <grpc/support/slice.h>
 #include <grpc/support/slice_buffer.h>
-#include "src/core/transport/byte_stream.h"
-#include "src/core/transport/chttp2/frame.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/transport/byte_stream.h"
+#include "src/core/lib/transport/chttp2/frame.h"
 
 typedef enum {
   GRPC_CHTTP2_DATA_FH_0,
@@ -98,4 +98,4 @@ void grpc_chttp2_encode_data(uint32_t id, gpr_slice_buffer *inbuf,
                              uint32_t write_bytes, int is_eof,
                              gpr_slice_buffer *outbuf);
 
-#endif /* GRPC_CORE_TRANSPORT_CHTTP2_FRAME_DATA_H */
+#endif /* GRPC_CORE_LIB_TRANSPORT_CHTTP2_FRAME_DATA_H */
diff --git a/src/core/transport/chttp2/frame_goaway.c b/src/core/lib/transport/chttp2/frame_goaway.c
index 2fa525e989..bb8c28df90 100644
--- a/src/core/transport/chttp2/frame_goaway.c
+++ b/src/core/lib/transport/chttp2/frame_goaway.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,8 +31,8 @@
  *
  */
 
-#include "src/core/transport/chttp2/frame_goaway.h"
-#include "src/core/transport/chttp2/internal.h"
+#include "src/core/lib/transport/chttp2/frame_goaway.h"
+#include "src/core/lib/transport/chttp2/internal.h"
 
 #include <string.h>
 
diff --git a/src/core/transport/chttp2/frame_goaway.h b/src/core/lib/transport/chttp2/frame_goaway.h
index 616287e9ee..f64c44f3d9 100644
--- a/src/core/transport/chttp2/frame_goaway.h
+++ b/src/core/lib/transport/chttp2/frame_goaway.h
@@ -31,14 +31,14 @@
  *
  */
 
-#ifndef GRPC_CORE_TRANSPORT_CHTTP2_FRAME_GOAWAY_H
-#define GRPC_CORE_TRANSPORT_CHTTP2_FRAME_GOAWAY_H
+#ifndef GRPC_CORE_LIB_TRANSPORT_CHTTP2_FRAME_GOAWAY_H
+#define GRPC_CORE_LIB_TRANSPORT_CHTTP2_FRAME_GOAWAY_H
 
-#include "src/core/iomgr/exec_ctx.h"
-#include "src/core/transport/chttp2/frame.h"
 #include <grpc/support/port_platform.h>
 #include <grpc/support/slice.h>
 #include <grpc/support/slice_buffer.h>
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/transport/chttp2/frame.h"
 
 typedef enum {
   GRPC_CHTTP2_GOAWAY_LSI0,
@@ -74,4 +74,4 @@ void grpc_chttp2_goaway_append(uint32_t last_stream_id, uint32_t error_code,
                                gpr_slice debug_data,
                                gpr_slice_buffer *slice_buffer);
 
-#endif /* GRPC_CORE_TRANSPORT_CHTTP2_FRAME_GOAWAY_H */
+#endif /* GRPC_CORE_LIB_TRANSPORT_CHTTP2_FRAME_GOAWAY_H */
diff --git a/src/core/transport/chttp2/frame_ping.c b/src/core/lib/transport/chttp2/frame_ping.c
index c6ab522283..14ca394264 100644
--- a/src/core/transport/chttp2/frame_ping.c
+++ b/src/core/lib/transport/chttp2/frame_ping.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,8 +31,8 @@
  *
  */
 
-#include "src/core/transport/chttp2/frame_ping.h"
-#include "src/core/transport/chttp2/internal.h"
+#include "src/core/lib/transport/chttp2/frame_ping.h"
+#include "src/core/lib/transport/chttp2/internal.h"
 
 #include <string.h>
 
diff --git a/src/core/transport/chttp2/frame_ping.h b/src/core/lib/transport/chttp2/frame_ping.h
index fc4dd7ac58..7640fc4773 100644
--- a/src/core/transport/chttp2/frame_ping.h
+++ b/src/core/lib/transport/chttp2/frame_ping.h
@@ -31,12 +31,12 @@
  *
  */
 
-#ifndef GRPC_CORE_TRANSPORT_CHTTP2_FRAME_PING_H
-#define GRPC_CORE_TRANSPORT_CHTTP2_FRAME_PING_H
+#ifndef GRPC_CORE_LIB_TRANSPORT_CHTTP2_FRAME_PING_H
+#define GRPC_CORE_LIB_TRANSPORT_CHTTP2_FRAME_PING_H
 
-#include "src/core/iomgr/exec_ctx.h"
 #include <grpc/support/slice.h>
-#include "src/core/transport/chttp2/frame.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/transport/chttp2/frame.h"
 
 typedef struct {
   uint8_t byte;
@@ -53,4 +53,4 @@ grpc_chttp2_parse_error grpc_chttp2_ping_parser_parse(
     grpc_chttp2_transport_parsing *transport_parsing,
     grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last);
 
-#endif /* GRPC_CORE_TRANSPORT_CHTTP2_FRAME_PING_H */
+#endif /* GRPC_CORE_LIB_TRANSPORT_CHTTP2_FRAME_PING_H */
diff --git a/src/core/transport/chttp2/frame_rst_stream.c b/src/core/lib/transport/chttp2/frame_rst_stream.c
index 754529e4b9..060912afc4 100644
--- a/src/core/transport/chttp2/frame_rst_stream.c
+++ b/src/core/lib/transport/chttp2/frame_rst_stream.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,12 +31,12 @@
  *
  */
 
-#include "src/core/transport/chttp2/frame_rst_stream.h"
-#include "src/core/transport/chttp2/internal.h"
+#include "src/core/lib/transport/chttp2/frame_rst_stream.h"
+#include "src/core/lib/transport/chttp2/internal.h"
 
 #include <grpc/support/log.h>
 
-#include "src/core/transport/chttp2/frame.h"
+#include "src/core/lib/transport/chttp2/frame.h"
 
 gpr_slice grpc_chttp2_rst_stream_create(uint32_t id, uint32_t code) {
   gpr_slice slice = gpr_slice_malloc(13);
diff --git a/src/core/transport/chttp2/frame_rst_stream.h b/src/core/lib/transport/chttp2/frame_rst_stream.h
index d563a22e24..93155fde9d 100644
--- a/src/core/transport/chttp2/frame_rst_stream.h
+++ b/src/core/lib/transport/chttp2/frame_rst_stream.h
@@ -31,12 +31,12 @@
  *
  */
 
-#ifndef GRPC_CORE_TRANSPORT_CHTTP2_FRAME_RST_STREAM_H
-#define GRPC_CORE_TRANSPORT_CHTTP2_FRAME_RST_STREAM_H
+#ifndef GRPC_CORE_LIB_TRANSPORT_CHTTP2_FRAME_RST_STREAM_H
+#define GRPC_CORE_LIB_TRANSPORT_CHTTP2_FRAME_RST_STREAM_H
 
 #include <grpc/support/slice.h>
-#include "src/core/transport/chttp2/frame.h"
-#include "src/core/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/transport/chttp2/frame.h"
 
 typedef struct {
   uint8_t byte;
@@ -52,4 +52,4 @@ grpc_chttp2_parse_error grpc_chttp2_rst_stream_parser_parse(
     grpc_chttp2_transport_parsing *transport_parsing,
     grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last);
 
-#endif /* GRPC_CORE_TRANSPORT_CHTTP2_FRAME_RST_STREAM_H */
+#endif /* GRPC_CORE_LIB_TRANSPORT_CHTTP2_FRAME_RST_STREAM_H */
diff --git a/src/core/transport/chttp2/frame_settings.c b/src/core/lib/transport/chttp2/frame_settings.c
index cc49dd4f69..48429c2a78 100644
--- a/src/core/transport/chttp2/frame_settings.c
+++ b/src/core/lib/transport/chttp2/frame_settings.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,18 +31,18 @@
  *
  */
 
-#include "src/core/transport/chttp2/frame_settings.h"
-#include "src/core/transport/chttp2/internal.h"
+#include "src/core/lib/transport/chttp2/frame_settings.h"
+#include "src/core/lib/transport/chttp2/internal.h"
 
 #include <string.h>
 
 #include <grpc/support/log.h>
 #include <grpc/support/useful.h>
 
-#include "src/core/debug/trace.h"
-#include "src/core/transport/chttp2/frame.h"
-#include "src/core/transport/chttp2/http2_errors.h"
-#include "src/core/transport/chttp2_transport.h"
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/transport/chttp2/frame.h"
+#include "src/core/lib/transport/chttp2/http2_errors.h"
+#include "src/core/lib/transport/chttp2_transport.h"
 
 #define MAX_MAX_HEADER_LIST_SIZE (1024 * 1024 * 1024)
 
diff --git a/src/core/transport/chttp2/frame_settings.h b/src/core/lib/transport/chttp2/frame_settings.h
index e3c10d3cc5..8b294de021 100644
--- a/src/core/transport/chttp2/frame_settings.h
+++ b/src/core/lib/transport/chttp2/frame_settings.h
@@ -31,13 +31,13 @@
  *
  */
 
-#ifndef GRPC_CORE_TRANSPORT_CHTTP2_FRAME_SETTINGS_H
-#define GRPC_CORE_TRANSPORT_CHTTP2_FRAME_SETTINGS_H
+#ifndef GRPC_CORE_LIB_TRANSPORT_CHTTP2_FRAME_SETTINGS_H
+#define GRPC_CORE_LIB_TRANSPORT_CHTTP2_FRAME_SETTINGS_H
 
 #include <grpc/support/port_platform.h>
 #include <grpc/support/slice.h>
-#include "src/core/transport/chttp2/frame.h"
-#include "src/core/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/transport/chttp2/frame.h"
 
 typedef enum {
   GRPC_CHTTP2_SPS_ID0,
@@ -100,4 +100,4 @@ grpc_chttp2_parse_error grpc_chttp2_settings_parser_parse(
     grpc_chttp2_transport_parsing *transport_parsing,
     grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last);
 
-#endif /* GRPC_CORE_TRANSPORT_CHTTP2_FRAME_SETTINGS_H */
+#endif /* GRPC_CORE_LIB_TRANSPORT_CHTTP2_FRAME_SETTINGS_H */
diff --git a/src/core/transport/chttp2/frame_window_update.c b/src/core/lib/transport/chttp2/frame_window_update.c
index 62d9bac117..2ab5003316 100644
--- a/src/core/transport/chttp2/frame_window_update.c
+++ b/src/core/lib/transport/chttp2/frame_window_update.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,8 +31,8 @@
  *
  */
 
-#include "src/core/transport/chttp2/frame_window_update.h"
-#include "src/core/transport/chttp2/internal.h"
+#include "src/core/lib/transport/chttp2/frame_window_update.h"
+#include "src/core/lib/transport/chttp2/internal.h"
 
 #include <grpc/support/log.h>
 
diff --git a/src/core/transport/chttp2/frame_window_update.h b/src/core/lib/transport/chttp2/frame_window_update.h
index 0b3712b091..4b1aea294d 100644
--- a/src/core/transport/chttp2/frame_window_update.h
+++ b/src/core/lib/transport/chttp2/frame_window_update.h
@@ -31,12 +31,12 @@
  *
  */
 
-#ifndef GRPC_CORE_TRANSPORT_CHTTP2_FRAME_WINDOW_UPDATE_H
-#define GRPC_CORE_TRANSPORT_CHTTP2_FRAME_WINDOW_UPDATE_H
+#ifndef GRPC_CORE_LIB_TRANSPORT_CHTTP2_FRAME_WINDOW_UPDATE_H
+#define GRPC_CORE_LIB_TRANSPORT_CHTTP2_FRAME_WINDOW_UPDATE_H
 
-#include "src/core/iomgr/exec_ctx.h"
 #include <grpc/support/slice.h>
-#include "src/core/transport/chttp2/frame.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/transport/chttp2/frame.h"
 
 typedef struct {
   uint8_t byte;
@@ -53,4 +53,4 @@ grpc_chttp2_parse_error grpc_chttp2_window_update_parser_parse(
     grpc_chttp2_transport_parsing *transport_parsing,
     grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last);
 
-#endif /* GRPC_CORE_TRANSPORT_CHTTP2_FRAME_WINDOW_UPDATE_H */
+#endif /* GRPC_CORE_LIB_TRANSPORT_CHTTP2_FRAME_WINDOW_UPDATE_H */
diff --git a/src/core/transport/chttp2/hpack_encoder.c b/src/core/lib/transport/chttp2/hpack_encoder.c
index f30f574d06..6b45929b04 100644
--- a/src/core/transport/chttp2/hpack_encoder.c
+++ b/src/core/lib/transport/chttp2/hpack_encoder.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/transport/chttp2/hpack_encoder.h"
+#include "src/core/lib/transport/chttp2/hpack_encoder.h"
 
 #include <assert.h>
 #include <string.h>
@@ -45,11 +45,11 @@
 #include <grpc/support/log.h>
 #include <grpc/support/useful.h>
 
-#include "src/core/transport/chttp2/bin_encoder.h"
-#include "src/core/transport/chttp2/hpack_table.h"
-#include "src/core/transport/chttp2/timeout_encoding.h"
-#include "src/core/transport/chttp2/varint.h"
-#include "src/core/transport/static_metadata.h"
+#include "src/core/lib/transport/chttp2/bin_encoder.h"
+#include "src/core/lib/transport/chttp2/hpack_table.h"
+#include "src/core/lib/transport/chttp2/timeout_encoding.h"
+#include "src/core/lib/transport/chttp2/varint.h"
+#include "src/core/lib/transport/static_metadata.h"
 
 #define HASH_FRAGMENT_1(x) ((x)&255)
 #define HASH_FRAGMENT_2(x) ((x >> 8) & 255)
diff --git a/src/core/transport/chttp2/hpack_encoder.h b/src/core/lib/transport/chttp2/hpack_encoder.h
index 90aaf867c5..de46a8f146 100644
--- a/src/core/transport/chttp2/hpack_encoder.h
+++ b/src/core/lib/transport/chttp2/hpack_encoder.h
@@ -31,15 +31,15 @@
  *
  */
 
-#ifndef GRPC_CORE_TRANSPORT_CHTTP2_HPACK_ENCODER_H
-#define GRPC_CORE_TRANSPORT_CHTTP2_HPACK_ENCODER_H
+#ifndef GRPC_CORE_LIB_TRANSPORT_CHTTP2_HPACK_ENCODER_H
+#define GRPC_CORE_LIB_TRANSPORT_CHTTP2_HPACK_ENCODER_H
 
-#include "src/core/transport/chttp2/frame.h"
-#include "src/core/transport/metadata.h"
-#include "src/core/transport/metadata_batch.h"
 #include <grpc/support/port_platform.h>
 #include <grpc/support/slice.h>
 #include <grpc/support/slice_buffer.h>
+#include "src/core/lib/transport/chttp2/frame.h"
+#include "src/core/lib/transport/metadata.h"
+#include "src/core/lib/transport/metadata_batch.h"
 
 #define GRPC_CHTTP2_HPACKC_NUM_FILTERS 256
 #define GRPC_CHTTP2_HPACKC_NUM_VALUES 256
@@ -92,4 +92,4 @@ void grpc_chttp2_encode_header(grpc_chttp2_hpack_compressor *c, uint32_t id,
                                grpc_metadata_batch *metadata, int is_eof,
                                gpr_slice_buffer *outbuf);
 
-#endif /* GRPC_CORE_TRANSPORT_CHTTP2_HPACK_ENCODER_H */
+#endif /* GRPC_CORE_LIB_TRANSPORT_CHTTP2_HPACK_ENCODER_H */
diff --git a/src/core/transport/chttp2/hpack_parser.c b/src/core/lib/transport/chttp2/hpack_parser.c
index a63c7db1f6..d41ebab147 100644
--- a/src/core/transport/chttp2/hpack_parser.c
+++ b/src/core/lib/transport/chttp2/hpack_parser.c
@@ -31,12 +31,12 @@
  *
  */
 
-#include "src/core/transport/chttp2/hpack_parser.h"
-#include "src/core/transport/chttp2/internal.h"
+#include "src/core/lib/transport/chttp2/hpack_parser.h"
+#include "src/core/lib/transport/chttp2/internal.h"
 
+#include <assert.h>
 #include <stddef.h>
 #include <string.h>
-#include <assert.h>
 
 /* This is here for grpc_is_binary_header
  * TODO(murgatroid99): Remove this
@@ -48,9 +48,9 @@
 #include <grpc/support/port_platform.h>
 #include <grpc/support/useful.h>
 
-#include "src/core/profiling/timers.h"
-#include "src/core/support/string.h"
-#include "src/core/transport/chttp2/bin_encoder.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/support/string.h"
+#include "src/core/lib/transport/chttp2/bin_encoder.h"
 
 typedef enum {
   NOT_BINARY,
diff --git a/src/core/transport/chttp2/hpack_parser.h b/src/core/lib/transport/chttp2/hpack_parser.h
index 6a6d136da2..a534fd5cf4 100644
--- a/src/core/transport/chttp2/hpack_parser.h
+++ b/src/core/lib/transport/chttp2/hpack_parser.h
@@ -31,16 +31,16 @@
  *
  */
 
-#ifndef GRPC_CORE_TRANSPORT_CHTTP2_HPACK_PARSER_H
-#define GRPC_CORE_TRANSPORT_CHTTP2_HPACK_PARSER_H
+#ifndef GRPC_CORE_LIB_TRANSPORT_CHTTP2_HPACK_PARSER_H
+#define GRPC_CORE_LIB_TRANSPORT_CHTTP2_HPACK_PARSER_H
 
 #include <stddef.h>
 
 #include <grpc/support/port_platform.h>
-#include "src/core/iomgr/exec_ctx.h"
-#include "src/core/transport/chttp2/frame.h"
-#include "src/core/transport/chttp2/hpack_table.h"
-#include "src/core/transport/metadata.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/transport/chttp2/frame.h"
+#include "src/core/lib/transport/chttp2/hpack_table.h"
+#include "src/core/lib/transport/metadata.h"
 
 typedef struct grpc_chttp2_hpack_parser grpc_chttp2_hpack_parser;
 
@@ -113,4 +113,4 @@ grpc_chttp2_parse_error grpc_chttp2_header_parser_parse(
     grpc_chttp2_transport_parsing *transport_parsing,
     grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last);
 
-#endif /* GRPC_CORE_TRANSPORT_CHTTP2_HPACK_PARSER_H */
+#endif /* GRPC_CORE_LIB_TRANSPORT_CHTTP2_HPACK_PARSER_H */
diff --git a/src/core/transport/chttp2/hpack_table.c b/src/core/lib/transport/chttp2/hpack_table.c
index f1ce3b84fd..f92bc26585 100644
--- a/src/core/transport/chttp2/hpack_table.c
+++ b/src/core/lib/transport/chttp2/hpack_table.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/transport/chttp2/hpack_table.h"
+#include "src/core/lib/transport/chttp2/hpack_table.h"
 
 #include <assert.h>
 #include <string.h>
@@ -39,7 +39,7 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 
-#include "src/core/support/murmur_hash.h"
+#include "src/core/lib/support/murmur_hash.h"
 
 static struct {
   const char *key;
diff --git a/src/core/transport/chttp2/hpack_table.h b/src/core/lib/transport/chttp2/hpack_table.h
index 6e1b5e66b5..2cbc02dd9c 100644
--- a/src/core/transport/chttp2/hpack_table.h
+++ b/src/core/lib/transport/chttp2/hpack_table.h
@@ -31,12 +31,12 @@
  *
  */
 
-#ifndef GRPC_CORE_TRANSPORT_CHTTP2_HPACK_TABLE_H
-#define GRPC_CORE_TRANSPORT_CHTTP2_HPACK_TABLE_H
+#ifndef GRPC_CORE_LIB_TRANSPORT_CHTTP2_HPACK_TABLE_H
+#define GRPC_CORE_LIB_TRANSPORT_CHTTP2_HPACK_TABLE_H
 
-#include "src/core/transport/metadata.h"
 #include <grpc/support/port_platform.h>
 #include <grpc/support/slice.h>
+#include "src/core/lib/transport/metadata.h"
 
 /* HPACK header table */
 
@@ -105,4 +105,4 @@ typedef struct {
 grpc_chttp2_hptbl_find_result grpc_chttp2_hptbl_find(
     const grpc_chttp2_hptbl *tbl, grpc_mdelem *md);
 
-#endif /* GRPC_CORE_TRANSPORT_CHTTP2_HPACK_TABLE_H */
+#endif /* GRPC_CORE_LIB_TRANSPORT_CHTTP2_HPACK_TABLE_H */
diff --git a/src/core/transport/chttp2/hpack_tables.txt b/src/core/lib/transport/chttp2/hpack_tables.txt
index 08842a0267..08842a0267 100644
--- a/src/core/transport/chttp2/hpack_tables.txt
+++ b/src/core/lib/transport/chttp2/hpack_tables.txt
diff --git a/src/core/transport/chttp2/http2_errors.h b/src/core/lib/transport/chttp2/http2_errors.h
index 4290df3d89..0238f9d80b 100644
--- a/src/core/transport/chttp2/http2_errors.h
+++ b/src/core/lib/transport/chttp2/http2_errors.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_TRANSPORT_CHTTP2_HTTP2_ERRORS_H
-#define GRPC_CORE_TRANSPORT_CHTTP2_HTTP2_ERRORS_H
+#ifndef GRPC_CORE_LIB_TRANSPORT_CHTTP2_HTTP2_ERRORS_H
+#define GRPC_CORE_LIB_TRANSPORT_CHTTP2_HTTP2_ERRORS_H
 
 /* error codes for RST_STREAM from http2 draft 14 section 7 */
 typedef enum {
@@ -53,4 +53,4 @@ typedef enum {
   GRPC_CHTTP2__ERROR_DO_NOT_USE = -1
 } grpc_chttp2_error_code;
 
-#endif /* GRPC_CORE_TRANSPORT_CHTTP2_HTTP2_ERRORS_H */
+#endif /* GRPC_CORE_LIB_TRANSPORT_CHTTP2_HTTP2_ERRORS_H */
diff --git a/src/core/lib/transport/chttp2/huffsyms.c b/src/core/lib/transport/chttp2/huffsyms.c
new file mode 100644
index 0000000000..27497e6ae0
--- /dev/null
+++ b/src/core/lib/transport/chttp2/huffsyms.c
@@ -0,0 +1,105 @@
+/*
+ *
+ * Copyright 2015-2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "src/core/lib/transport/chttp2/huffsyms.h"
+
+/* Constants pulled from the HPACK spec, and converted to C using the vim
+   command:
+   :%s/.*   \([0-9a-f]\+\)  \[ *\([0-9]\+\)\]/{0x\1, \2},/g */
+const grpc_chttp2_huffsym grpc_chttp2_huffsyms[GRPC_CHTTP2_NUM_HUFFSYMS] = {
+    {0x1ff8, 13},     {0x7fffd8, 23},   {0xfffffe2, 28},  {0xfffffe3, 28},
+    {0xfffffe4, 28},  {0xfffffe5, 28},  {0xfffffe6, 28},  {0xfffffe7, 28},
+    {0xfffffe8, 28},  {0xffffea, 24},   {0x3ffffffc, 30}, {0xfffffe9, 28},
+    {0xfffffea, 28},  {0x3ffffffd, 30}, {0xfffffeb, 28},  {0xfffffec, 28},
+    {0xfffffed, 28},  {0xfffffee, 28},  {0xfffffef, 28},  {0xffffff0, 28},
+    {0xffffff1, 28},  {0xffffff2, 28},  {0x3ffffffe, 30}, {0xffffff3, 28},
+    {0xffffff4, 28},  {0xffffff5, 28},  {0xffffff6, 28},  {0xffffff7, 28},
+    {0xffffff8, 28},  {0xffffff9, 28},  {0xffffffa, 28},  {0xffffffb, 28},
+    {0x14, 6},        {0x3f8, 10},      {0x3f9, 10},      {0xffa, 12},
+    {0x1ff9, 13},     {0x15, 6},        {0xf8, 8},        {0x7fa, 11},
+    {0x3fa, 10},      {0x3fb, 10},      {0xf9, 8},        {0x7fb, 11},
+    {0xfa, 8},        {0x16, 6},        {0x17, 6},        {0x18, 6},
+    {0x0, 5},         {0x1, 5},         {0x2, 5},         {0x19, 6},
+    {0x1a, 6},        {0x1b, 6},        {0x1c, 6},        {0x1d, 6},
+    {0x1e, 6},        {0x1f, 6},        {0x5c, 7},        {0xfb, 8},
+    {0x7ffc, 15},     {0x20, 6},        {0xffb, 12},      {0x3fc, 10},
+    {0x1ffa, 13},     {0x21, 6},        {0x5d, 7},        {0x5e, 7},
+    {0x5f, 7},        {0x60, 7},        {0x61, 7},        {0x62, 7},
+    {0x63, 7},        {0x64, 7},        {0x65, 7},        {0x66, 7},
+    {0x67, 7},        {0x68, 7},        {0x69, 7},        {0x6a, 7},
+    {0x6b, 7},        {0x6c, 7},        {0x6d, 7},        {0x6e, 7},
+    {0x6f, 7},        {0x70, 7},        {0x71, 7},        {0x72, 7},
+    {0xfc, 8},        {0x73, 7},        {0xfd, 8},        {0x1ffb, 13},
+    {0x7fff0, 19},    {0x1ffc, 13},     {0x3ffc, 14},     {0x22, 6},
+    {0x7ffd, 15},     {0x3, 5},         {0x23, 6},        {0x4, 5},
+    {0x24, 6},        {0x5, 5},         {0x25, 6},        {0x26, 6},
+    {0x27, 6},        {0x6, 5},         {0x74, 7},        {0x75, 7},
+    {0x28, 6},        {0x29, 6},        {0x2a, 6},        {0x7, 5},
+    {0x2b, 6},        {0x76, 7},        {0x2c, 6},        {0x8, 5},
+    {0x9, 5},         {0x2d, 6},        {0x77, 7},        {0x78, 7},
+    {0x79, 7},        {0x7a, 7},        {0x7b, 7},        {0x7ffe, 15},
+    {0x7fc, 11},      {0x3ffd, 14},     {0x1ffd, 13},     {0xffffffc, 28},
+    {0xfffe6, 20},    {0x3fffd2, 22},   {0xfffe7, 20},    {0xfffe8, 20},
+    {0x3fffd3, 22},   {0x3fffd4, 22},   {0x3fffd5, 22},   {0x7fffd9, 23},
+    {0x3fffd6, 22},   {0x7fffda, 23},   {0x7fffdb, 23},   {0x7fffdc, 23},
+    {0x7fffdd, 23},   {0x7fffde, 23},   {0xffffeb, 24},   {0x7fffdf, 23},
+    {0xffffec, 24},   {0xffffed, 24},   {0x3fffd7, 22},   {0x7fffe0, 23},
+    {0xffffee, 24},   {0x7fffe1, 23},   {0x7fffe2, 23},   {0x7fffe3, 23},
+    {0x7fffe4, 23},   {0x1fffdc, 21},   {0x3fffd8, 22},   {0x7fffe5, 23},
+    {0x3fffd9, 22},   {0x7fffe6, 23},   {0x7fffe7, 23},   {0xffffef, 24},
+    {0x3fffda, 22},   {0x1fffdd, 21},   {0xfffe9, 20},    {0x3fffdb, 22},
+    {0x3fffdc, 22},   {0x7fffe8, 23},   {0x7fffe9, 23},   {0x1fffde, 21},
+    {0x7fffea, 23},   {0x3fffdd, 22},   {0x3fffde, 22},   {0xfffff0, 24},
+    {0x1fffdf, 21},   {0x3fffdf, 22},   {0x7fffeb, 23},   {0x7fffec, 23},
+    {0x1fffe0, 21},   {0x1fffe1, 21},   {0x3fffe0, 22},   {0x1fffe2, 21},
+    {0x7fffed, 23},   {0x3fffe1, 22},   {0x7fffee, 23},   {0x7fffef, 23},
+    {0xfffea, 20},    {0x3fffe2, 22},   {0x3fffe3, 22},   {0x3fffe4, 22},
+    {0x7ffff0, 23},   {0x3fffe5, 22},   {0x3fffe6, 22},   {0x7ffff1, 23},
+    {0x3ffffe0, 26},  {0x3ffffe1, 26},  {0xfffeb, 20},    {0x7fff1, 19},
+    {0x3fffe7, 22},   {0x7ffff2, 23},   {0x3fffe8, 22},   {0x1ffffec, 25},
+    {0x3ffffe2, 26},  {0x3ffffe3, 26},  {0x3ffffe4, 26},  {0x7ffffde, 27},
+    {0x7ffffdf, 27},  {0x3ffffe5, 26},  {0xfffff1, 24},   {0x1ffffed, 25},
+    {0x7fff2, 19},    {0x1fffe3, 21},   {0x3ffffe6, 26},  {0x7ffffe0, 27},
+    {0x7ffffe1, 27},  {0x3ffffe7, 26},  {0x7ffffe2, 27},  {0xfffff2, 24},
+    {0x1fffe4, 21},   {0x1fffe5, 21},   {0x3ffffe8, 26},  {0x3ffffe9, 26},
+    {0xffffffd, 28},  {0x7ffffe3, 27},  {0x7ffffe4, 27},  {0x7ffffe5, 27},
+    {0xfffec, 20},    {0xfffff3, 24},   {0xfffed, 20},    {0x1fffe6, 21},
+    {0x3fffe9, 22},   {0x1fffe7, 21},   {0x1fffe8, 21},   {0x7ffff3, 23},
+    {0x3fffea, 22},   {0x3fffeb, 22},   {0x1ffffee, 25},  {0x1ffffef, 25},
+    {0xfffff4, 24},   {0xfffff5, 24},   {0x3ffffea, 26},  {0x7ffff4, 23},
+    {0x3ffffeb, 26},  {0x7ffffe6, 27},  {0x3ffffec, 26},  {0x3ffffed, 26},
+    {0x7ffffe7, 27},  {0x7ffffe8, 27},  {0x7ffffe9, 27},  {0x7ffffea, 27},
+    {0x7ffffeb, 27},  {0xffffffe, 28},  {0x7ffffec, 27},  {0x7ffffed, 27},
+    {0x7ffffee, 27},  {0x7ffffef, 27},  {0x7fffff0, 27},  {0x3ffffee, 26},
+    {0x3fffffff, 30},
+};
diff --git a/src/core/transport/chttp2/huffsyms.h b/src/core/lib/transport/chttp2/huffsyms.h
index 9c4f09dcf6..1ca77b9207 100644
--- a/src/core/transport/chttp2/huffsyms.h
+++ b/src/core/lib/transport/chttp2/huffsyms.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_TRANSPORT_CHTTP2_HUFFSYMS_H
-#define GRPC_CORE_TRANSPORT_CHTTP2_HUFFSYMS_H
+#ifndef GRPC_CORE_LIB_TRANSPORT_CHTTP2_HUFFSYMS_H
+#define GRPC_CORE_LIB_TRANSPORT_CHTTP2_HUFFSYMS_H
 
 /* HPACK static huffman table */
 
@@ -45,4 +45,4 @@ typedef struct {
 
 extern const grpc_chttp2_huffsym grpc_chttp2_huffsyms[GRPC_CHTTP2_NUM_HUFFSYMS];
 
-#endif /* GRPC_CORE_TRANSPORT_CHTTP2_HUFFSYMS_H */
+#endif /* GRPC_CORE_LIB_TRANSPORT_CHTTP2_HUFFSYMS_H */
diff --git a/src/core/transport/chttp2/incoming_metadata.c b/src/core/lib/transport/chttp2/incoming_metadata.c
index 315bc2faa1..a1a8d37562 100644
--- a/src/core/transport/chttp2/incoming_metadata.c
+++ b/src/core/lib/transport/chttp2/incoming_metadata.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,11 +31,11 @@
  *
  */
 
-#include "src/core/transport/chttp2/incoming_metadata.h"
+#include "src/core/lib/transport/chttp2/incoming_metadata.h"
 
 #include <string.h>
 
-#include "src/core/transport/chttp2/internal.h"
+#include "src/core/lib/transport/chttp2/internal.h"
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
diff --git a/src/core/transport/chttp2/incoming_metadata.h b/src/core/lib/transport/chttp2/incoming_metadata.h
index 52454f348c..edfa0adf9d 100644
--- a/src/core/transport/chttp2/incoming_metadata.h
+++ b/src/core/lib/transport/chttp2/incoming_metadata.h
@@ -31,10 +31,10 @@
  *
  */
 
-#ifndef GRPC_CORE_TRANSPORT_CHTTP2_INCOMING_METADATA_H
-#define GRPC_CORE_TRANSPORT_CHTTP2_INCOMING_METADATA_H
+#ifndef GRPC_CORE_LIB_TRANSPORT_CHTTP2_INCOMING_METADATA_H
+#define GRPC_CORE_LIB_TRANSPORT_CHTTP2_INCOMING_METADATA_H
 
-#include "src/core/transport/transport.h"
+#include "src/core/lib/transport/transport.h"
 
 typedef struct {
   grpc_linked_mdelem *elems;
@@ -57,4 +57,4 @@ void grpc_chttp2_incoming_metadata_buffer_add(
 void grpc_chttp2_incoming_metadata_buffer_set_deadline(
     grpc_chttp2_incoming_metadata_buffer *buffer, gpr_timespec deadline);
 
-#endif /* GRPC_CORE_TRANSPORT_CHTTP2_INCOMING_METADATA_H */
+#endif /* GRPC_CORE_LIB_TRANSPORT_CHTTP2_INCOMING_METADATA_H */
diff --git a/src/core/transport/chttp2/internal.h b/src/core/lib/transport/chttp2/internal.h
index 0690cb37cd..346e404204 100644
--- a/src/core/transport/chttp2/internal.h
+++ b/src/core/lib/transport/chttp2/internal.h
@@ -31,26 +31,26 @@
  *
  */
 
-#ifndef GRPC_CORE_TRANSPORT_CHTTP2_INTERNAL_H
-#define GRPC_CORE_TRANSPORT_CHTTP2_INTERNAL_H
+#ifndef GRPC_CORE_LIB_TRANSPORT_CHTTP2_INTERNAL_H
+#define GRPC_CORE_LIB_TRANSPORT_CHTTP2_INTERNAL_H
 
 #include <assert.h>
 #include <stdbool.h>
 
-#include "src/core/iomgr/endpoint.h"
-#include "src/core/transport/chttp2/frame.h"
-#include "src/core/transport/chttp2/frame_data.h"
-#include "src/core/transport/chttp2/frame_goaway.h"
-#include "src/core/transport/chttp2/frame_ping.h"
-#include "src/core/transport/chttp2/frame_rst_stream.h"
-#include "src/core/transport/chttp2/frame_settings.h"
-#include "src/core/transport/chttp2/frame_window_update.h"
-#include "src/core/transport/chttp2/hpack_encoder.h"
-#include "src/core/transport/chttp2/hpack_parser.h"
-#include "src/core/transport/chttp2/incoming_metadata.h"
-#include "src/core/transport/chttp2/stream_map.h"
-#include "src/core/transport/connectivity_state.h"
-#include "src/core/transport/transport_impl.h"
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/transport/chttp2/frame.h"
+#include "src/core/lib/transport/chttp2/frame_data.h"
+#include "src/core/lib/transport/chttp2/frame_goaway.h"
+#include "src/core/lib/transport/chttp2/frame_ping.h"
+#include "src/core/lib/transport/chttp2/frame_rst_stream.h"
+#include "src/core/lib/transport/chttp2/frame_settings.h"
+#include "src/core/lib/transport/chttp2/frame_window_update.h"
+#include "src/core/lib/transport/chttp2/hpack_encoder.h"
+#include "src/core/lib/transport/chttp2/hpack_parser.h"
+#include "src/core/lib/transport/chttp2/incoming_metadata.h"
+#include "src/core/lib/transport/chttp2/stream_map.h"
+#include "src/core/lib/transport/connectivity_state.h"
+#include "src/core/lib/transport/transport_impl.h"
 
 typedef struct grpc_chttp2_transport grpc_chttp2_transport;
 typedef struct grpc_chttp2_stream grpc_chttp2_stream;
@@ -777,4 +777,4 @@ void grpc_chttp2_ack_ping(grpc_exec_ctx *exec_ctx,
 void grpc_chttp2_become_writable(grpc_chttp2_transport_global *transport_global,
                                  grpc_chttp2_stream_global *stream_global);
 
-#endif /* GRPC_CORE_TRANSPORT_CHTTP2_INTERNAL_H */
+#endif /* GRPC_CORE_LIB_TRANSPORT_CHTTP2_INTERNAL_H */
diff --git a/src/core/transport/chttp2/parsing.c b/src/core/lib/transport/chttp2/parsing.c
index 0516f39fa9..9ee52f63f2 100644
--- a/src/core/transport/chttp2/parsing.c
+++ b/src/core/lib/transport/chttp2/parsing.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/transport/chttp2/internal.h"
+#include "src/core/lib/transport/chttp2/internal.h"
 
 #include <string.h>
 
@@ -39,11 +39,11 @@
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 
-#include "src/core/profiling/timers.h"
-#include "src/core/transport/chttp2/http2_errors.h"
-#include "src/core/transport/chttp2/status_conversion.h"
-#include "src/core/transport/chttp2/timeout_encoding.h"
-#include "src/core/transport/static_metadata.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/transport/chttp2/http2_errors.h"
+#include "src/core/lib/transport/chttp2/status_conversion.h"
+#include "src/core/lib/transport/chttp2/timeout_encoding.h"
+#include "src/core/lib/transport/static_metadata.h"
 
 static int init_frame_parser(grpc_exec_ctx *exec_ctx,
                              grpc_chttp2_transport_parsing *transport_parsing);
diff --git a/src/core/transport/chttp2/status_conversion.c b/src/core/lib/transport/chttp2/status_conversion.c
index bf214b017a..73dd63e720 100644
--- a/src/core/transport/chttp2/status_conversion.c
+++ b/src/core/lib/transport/chttp2/status_conversion.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/transport/chttp2/status_conversion.h"
+#include "src/core/lib/transport/chttp2/status_conversion.h"
 
 int grpc_chttp2_grpc_status_to_http2_error(grpc_status_code status) {
   switch (status) {
diff --git a/src/core/transport/chttp2/status_conversion.h b/src/core/lib/transport/chttp2/status_conversion.h
index c6e066bb5d..241417d32e 100644
--- a/src/core/transport/chttp2/status_conversion.h
+++ b/src/core/lib/transport/chttp2/status_conversion.h
@@ -31,11 +31,11 @@
  *
  */
 
-#ifndef GRPC_CORE_TRANSPORT_CHTTP2_STATUS_CONVERSION_H
-#define GRPC_CORE_TRANSPORT_CHTTP2_STATUS_CONVERSION_H
+#ifndef GRPC_CORE_LIB_TRANSPORT_CHTTP2_STATUS_CONVERSION_H
+#define GRPC_CORE_LIB_TRANSPORT_CHTTP2_STATUS_CONVERSION_H
 
 #include <grpc/grpc.h>
-#include "src/core/transport/chttp2/http2_errors.h"
+#include "src/core/lib/transport/chttp2/http2_errors.h"
 
 /* Conversion of grpc status codes to http2 error codes (for RST_STREAM) */
 grpc_chttp2_error_code grpc_chttp2_grpc_status_to_http2_error(
@@ -47,4 +47,4 @@ grpc_status_code grpc_chttp2_http2_error_to_grpc_status(
 grpc_status_code grpc_chttp2_http2_status_to_grpc_status(int status);
 int grpc_chttp2_grpc_status_to_http2_status(grpc_status_code status);
 
-#endif /* GRPC_CORE_TRANSPORT_CHTTP2_STATUS_CONVERSION_H */
+#endif /* GRPC_CORE_LIB_TRANSPORT_CHTTP2_STATUS_CONVERSION_H */
diff --git a/src/core/transport/chttp2/stream_lists.c b/src/core/lib/transport/chttp2/stream_lists.c
index 60fe735cfc..b51a041dc7 100644
--- a/src/core/transport/chttp2/stream_lists.c
+++ b/src/core/lib/transport/chttp2/stream_lists.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/transport/chttp2/internal.h"
+#include "src/core/lib/transport/chttp2/internal.h"
 
 #include <grpc/support/log.h>
 
diff --git a/src/core/transport/chttp2/stream_map.c b/src/core/lib/transport/chttp2/stream_map.c
index 555a16fb72..dbbbe783bf 100644
--- a/src/core/transport/chttp2/stream_map.c
+++ b/src/core/lib/transport/chttp2/stream_map.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/transport/chttp2/stream_map.h"
+#include "src/core/lib/transport/chttp2/stream_map.h"
 
 #include <string.h>
 
diff --git a/src/core/transport/chttp2/stream_map.h b/src/core/lib/transport/chttp2/stream_map.h
index 957a58a4f2..1c56b18e54 100644
--- a/src/core/transport/chttp2/stream_map.h
+++ b/src/core/lib/transport/chttp2/stream_map.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_TRANSPORT_CHTTP2_STREAM_MAP_H
-#define GRPC_CORE_TRANSPORT_CHTTP2_STREAM_MAP_H
+#ifndef GRPC_CORE_LIB_TRANSPORT_CHTTP2_STREAM_MAP_H
+#define GRPC_CORE_LIB_TRANSPORT_CHTTP2_STREAM_MAP_H
 
 #include <grpc/support/port_platform.h>
 
@@ -81,4 +81,4 @@ void grpc_chttp2_stream_map_for_each(grpc_chttp2_stream_map *map,
                                                void *value),
                                      void *user_data);
 
-#endif /* GRPC_CORE_TRANSPORT_CHTTP2_STREAM_MAP_H */
+#endif /* GRPC_CORE_LIB_TRANSPORT_CHTTP2_STREAM_MAP_H */
diff --git a/src/core/transport/chttp2/timeout_encoding.c b/src/core/lib/transport/chttp2/timeout_encoding.c
index a6f7081d21..0edacaafd3 100644
--- a/src/core/transport/chttp2/timeout_encoding.c
+++ b/src/core/lib/transport/chttp2/timeout_encoding.c
@@ -31,13 +31,13 @@
  *
  */
 
-#include "src/core/transport/chttp2/timeout_encoding.h"
+#include "src/core/lib/transport/chttp2/timeout_encoding.h"
 
 #include <stdio.h>
 #include <string.h>
 
 #include <grpc/support/port_platform.h>
-#include "src/core/support/string.h"
+#include "src/core/lib/support/string.h"
 
 static int64_t round_up(int64_t x, int64_t divisor) {
   return (x / divisor + (x % divisor != 0)) * divisor;
@@ -150,7 +150,7 @@ int grpc_chttp2_decode_timeout(const char *buffer, gpr_timespec *timeout) {
     /* spec allows max. 8 digits, but we allow values up to 1,000,000,000 */
     if (x >= (100 * 1000 * 1000)) {
       if (x != (100 * 1000 * 1000) || digit != 0) {
-        *timeout = gpr_inf_future(GPR_CLOCK_REALTIME);
+        *timeout = gpr_inf_future(GPR_TIMESPAN);
         return 1;
       }
     }
diff --git a/src/core/transport/chttp2/timeout_encoding.h b/src/core/lib/transport/chttp2/timeout_encoding.h
index 81bae8e936..731beb5a37 100644
--- a/src/core/transport/chttp2/timeout_encoding.h
+++ b/src/core/lib/transport/chttp2/timeout_encoding.h
@@ -31,11 +31,11 @@
  *
  */
 
-#ifndef GRPC_CORE_TRANSPORT_CHTTP2_TIMEOUT_ENCODING_H
-#define GRPC_CORE_TRANSPORT_CHTTP2_TIMEOUT_ENCODING_H
+#ifndef GRPC_CORE_LIB_TRANSPORT_CHTTP2_TIMEOUT_ENCODING_H
+#define GRPC_CORE_LIB_TRANSPORT_CHTTP2_TIMEOUT_ENCODING_H
 
-#include "src/core/support/string.h"
 #include <grpc/support/time.h>
+#include "src/core/lib/support/string.h"
 
 #define GRPC_CHTTP2_TIMEOUT_ENCODE_MIN_BUFSIZE (GPR_LTOA_MIN_BUFSIZE + 1)
 
@@ -44,4 +44,4 @@
 void grpc_chttp2_encode_timeout(gpr_timespec timeout, char *buffer);
 int grpc_chttp2_decode_timeout(const char *buffer, gpr_timespec *timeout);
 
-#endif /* GRPC_CORE_TRANSPORT_CHTTP2_TIMEOUT_ENCODING_H */
+#endif /* GRPC_CORE_LIB_TRANSPORT_CHTTP2_TIMEOUT_ENCODING_H */
diff --git a/src/core/transport/chttp2/varint.c b/src/core/lib/transport/chttp2/varint.c
index 1cc235e989..6dfef45362 100644
--- a/src/core/transport/chttp2/varint.c
+++ b/src/core/lib/transport/chttp2/varint.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/transport/chttp2/varint.h"
+#include "src/core/lib/transport/chttp2/varint.h"
 
 uint32_t grpc_chttp2_hpack_varint_length(uint32_t tail_value) {
   if (tail_value < (1 << 7)) {
diff --git a/src/core/transport/chttp2/varint.h b/src/core/lib/transport/chttp2/varint.h
index 7ab9d22ab5..e4a0ae3c22 100644
--- a/src/core/transport/chttp2/varint.h
+++ b/src/core/lib/transport/chttp2/varint.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_TRANSPORT_CHTTP2_VARINT_H
-#define GRPC_CORE_TRANSPORT_CHTTP2_VARINT_H
+#ifndef GRPC_CORE_LIB_TRANSPORT_CHTTP2_VARINT_H
+#define GRPC_CORE_LIB_TRANSPORT_CHTTP2_VARINT_H
 
 #include <grpc/support/port_platform.h>
 
@@ -72,4 +72,4 @@ void grpc_chttp2_hpack_write_varint_tail(uint32_t tail_value, uint8_t* target,
     }                                                                         \
   } while (0)
 
-#endif /* GRPC_CORE_TRANSPORT_CHTTP2_VARINT_H */
+#endif /* GRPC_CORE_LIB_TRANSPORT_CHTTP2_VARINT_H */
diff --git a/src/core/transport/chttp2/writing.c b/src/core/lib/transport/chttp2/writing.c
index 107725cbc7..daea331d31 100644
--- a/src/core/transport/chttp2/writing.c
+++ b/src/core/lib/transport/chttp2/writing.c
@@ -31,14 +31,14 @@
  *
  */
 
-#include "src/core/transport/chttp2/internal.h"
+#include "src/core/lib/transport/chttp2/internal.h"
 
 #include <limits.h>
 
 #include <grpc/support/log.h>
 
-#include "src/core/profiling/timers.h"
-#include "src/core/transport/chttp2/http2_errors.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/transport/chttp2/http2_errors.h"
 
 static void finalize_outbuf(grpc_exec_ctx *exec_ctx,
                             grpc_chttp2_transport_writing *transport_writing);
diff --git a/src/core/transport/chttp2_transport.c b/src/core/lib/transport/chttp2_transport.c
index b16768d06e..7fed3d8b47 100644
--- a/src/core/transport/chttp2_transport.c
+++ b/src/core/lib/transport/chttp2_transport.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/transport/chttp2_transport.h"
+#include "src/core/lib/transport/chttp2_transport.h"
 
 #include <math.h>
 #include <stdio.h>
@@ -43,14 +43,14 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/useful.h>
 
-#include "src/core/profiling/timers.h"
-#include "src/core/support/string.h"
-#include "src/core/transport/chttp2/http2_errors.h"
-#include "src/core/transport/chttp2/internal.h"
-#include "src/core/transport/chttp2/status_conversion.h"
-#include "src/core/transport/chttp2/timeout_encoding.h"
-#include "src/core/transport/static_metadata.h"
-#include "src/core/transport/transport_impl.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/support/string.h"
+#include "src/core/lib/transport/chttp2/http2_errors.h"
+#include "src/core/lib/transport/chttp2/internal.h"
+#include "src/core/lib/transport/chttp2/status_conversion.h"
+#include "src/core/lib/transport/chttp2/timeout_encoding.h"
+#include "src/core/lib/transport/static_metadata.h"
+#include "src/core/lib/transport/transport_impl.h"
 
 #define DEFAULT_WINDOW 65535
 #define DEFAULT_CONNECTION_WINDOW_TARGET (1024 * 1024)
@@ -1398,8 +1398,8 @@ static void recv_data(grpc_exec_ctx *exec_ctx, void *tp, bool success) {
     gpr_mu_unlock(&t->mu);
     GPR_TIMER_BEGIN("recv_data.parse", 0);
     for (; i < t->read_buffer.count &&
-               grpc_chttp2_perform_read(exec_ctx, transport_parsing,
-                                        t->read_buffer.slices[i]);
+           grpc_chttp2_perform_read(exec_ctx, transport_parsing,
+                                    t->read_buffer.slices[i]);
          i++)
       ;
     GPR_TIMER_END("recv_data.parse", 0);
@@ -1474,9 +1474,10 @@ static void connectivity_state_set(
     grpc_connectivity_state state, const char *reason) {
   GRPC_CHTTP2_IF_TRACING(
       gpr_log(GPR_DEBUG, "set connectivity_state=%d", state));
-  grpc_connectivity_state_set(exec_ctx, &TRANSPORT_FROM_GLOBAL(transport_global)
-                                             ->channel_callback.state_tracker,
-                              state, reason);
+  grpc_connectivity_state_set(
+      exec_ctx,
+      &TRANSPORT_FROM_GLOBAL(transport_global)->channel_callback.state_tracker,
+      state, reason);
 }
 
 /*******************************************************************************
@@ -1756,10 +1757,15 @@ static char *chttp2_get_peer(grpc_exec_ctx *exec_ctx, grpc_transport *t) {
   return gpr_strdup(((grpc_chttp2_transport *)t)->peer_string);
 }
 
-static const grpc_transport_vtable vtable = {
-    sizeof(grpc_chttp2_stream), "chttp2", init_stream, set_pollset,
-    perform_stream_op, perform_transport_op, destroy_stream, destroy_transport,
-    chttp2_get_peer};
+static const grpc_transport_vtable vtable = {sizeof(grpc_chttp2_stream),
+                                             "chttp2",
+                                             init_stream,
+                                             set_pollset,
+                                             perform_stream_op,
+                                             perform_transport_op,
+                                             destroy_stream,
+                                             destroy_transport,
+                                             chttp2_get_peer};
 
 grpc_transport *grpc_create_chttp2_transport(
     grpc_exec_ctx *exec_ctx, const grpc_channel_args *channel_args,
diff --git a/src/core/transport/chttp2_transport.h b/src/core/lib/transport/chttp2_transport.h
index 9a6cf0ed35..5008cab7f8 100644
--- a/src/core/transport/chttp2_transport.h
+++ b/src/core/lib/transport/chttp2_transport.h
@@ -31,11 +31,11 @@
  *
  */
 
-#ifndef GRPC_CORE_TRANSPORT_CHTTP2_TRANSPORT_H
-#define GRPC_CORE_TRANSPORT_CHTTP2_TRANSPORT_H
+#ifndef GRPC_CORE_LIB_TRANSPORT_CHTTP2_TRANSPORT_H
+#define GRPC_CORE_LIB_TRANSPORT_CHTTP2_TRANSPORT_H
 
-#include "src/core/iomgr/endpoint.h"
-#include "src/core/transport/transport.h"
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/transport/transport.h"
 
 extern int grpc_http_trace;
 extern int grpc_flowctl_trace;
@@ -48,4 +48,4 @@ void grpc_chttp2_transport_start_reading(grpc_exec_ctx *exec_ctx,
                                          grpc_transport *transport,
                                          gpr_slice *slices, size_t nslices);
 
-#endif /* GRPC_CORE_TRANSPORT_CHTTP2_TRANSPORT_H */
+#endif /* GRPC_CORE_LIB_TRANSPORT_CHTTP2_TRANSPORT_H */
diff --git a/src/core/transport/connectivity_state.c b/src/core/lib/transport/connectivity_state.c
index 87765b9799..123eab8b36 100644
--- a/src/core/transport/connectivity_state.c
+++ b/src/core/lib/transport/connectivity_state.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/transport/connectivity_state.h"
+#include "src/core/lib/transport/connectivity_state.h"
 
 #include <string.h>
 
diff --git a/src/core/transport/connectivity_state.h b/src/core/lib/transport/connectivity_state.h
index b4a3ce924d..6f92132438 100644
--- a/src/core/transport/connectivity_state.h
+++ b/src/core/lib/transport/connectivity_state.h
@@ -31,11 +31,11 @@
  *
  */
 
-#ifndef GRPC_CORE_TRANSPORT_CONNECTIVITY_STATE_H
-#define GRPC_CORE_TRANSPORT_CONNECTIVITY_STATE_H
+#ifndef GRPC_CORE_LIB_TRANSPORT_CONNECTIVITY_STATE_H
+#define GRPC_CORE_LIB_TRANSPORT_CONNECTIVITY_STATE_H
 
 #include <grpc/grpc.h>
-#include "src/core/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
 
 typedef struct grpc_connectivity_state_watcher {
   /** we keep watchers in a linked list */
@@ -82,4 +82,4 @@ int grpc_connectivity_state_notify_on_state_change(
     grpc_exec_ctx *exec_ctx, grpc_connectivity_state_tracker *tracker,
     grpc_connectivity_state *current, grpc_closure *notify);
 
-#endif /* GRPC_CORE_TRANSPORT_CONNECTIVITY_STATE_H */
+#endif /* GRPC_CORE_LIB_TRANSPORT_CONNECTIVITY_STATE_H */
diff --git a/src/core/transport/metadata.c b/src/core/lib/transport/metadata.c
index 807ae071a3..7605f09991 100644
--- a/src/core/transport/metadata.c
+++ b/src/core/lib/transport/metadata.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/transport/metadata.h"
+#include "src/core/lib/transport/metadata.h"
 
 #include <assert.h>
 #include <stddef.h>
@@ -44,12 +44,12 @@
 #include <grpc/support/string_util.h>
 #include <grpc/support/time.h>
 
-#include "src/core/profiling/timers.h"
-#include "src/core/support/murmur_hash.h"
-#include "src/core/support/string.h"
-#include "src/core/transport/chttp2/bin_encoder.h"
-#include "src/core/transport/static_metadata.h"
-#include "src/core/iomgr/iomgr_internal.h"
+#include "src/core/lib/iomgr/iomgr_internal.h"
+#include "src/core/lib/profiling/timers.h"
+#include "src/core/lib/support/murmur_hash.h"
+#include "src/core/lib/support/string.h"
+#include "src/core/lib/transport/chttp2/bin_encoder.h"
+#include "src/core/lib/transport/static_metadata.h"
 
 /* There are two kinds of mdelem and mdstr instances.
  * Static instances are declared in static_metadata.{h,c} and
diff --git a/src/core/transport/metadata.h b/src/core/lib/transport/metadata.h
index 5ab397848c..d72ec9accc 100644
--- a/src/core/transport/metadata.h
+++ b/src/core/lib/transport/metadata.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_TRANSPORT_METADATA_H
-#define GRPC_CORE_TRANSPORT_METADATA_H
+#ifndef GRPC_CORE_LIB_TRANSPORT_METADATA_H
+#define GRPC_CORE_LIB_TRANSPORT_METADATA_H
 
 #include <grpc/support/slice.h>
 #include <grpc/support/useful.h>
@@ -153,4 +153,4 @@ int grpc_mdstr_is_bin_suffixed(grpc_mdstr *s);
 void grpc_mdctx_global_init(void);
 void grpc_mdctx_global_shutdown(void);
 
-#endif /* GRPC_CORE_TRANSPORT_METADATA_H */
+#endif /* GRPC_CORE_LIB_TRANSPORT_METADATA_H */
diff --git a/src/core/transport/metadata_batch.c b/src/core/lib/transport/metadata_batch.c
index 1266862f82..bb79b8fa96 100644
--- a/src/core/transport/metadata_batch.c
+++ b/src/core/lib/transport/metadata_batch.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,14 +31,14 @@
  *
  */
 
-#include "src/core/transport/metadata_batch.h"
+#include "src/core/lib/transport/metadata_batch.h"
 
 #include <string.h>
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 
-#include "src/core/profiling/timers.h"
+#include "src/core/lib/profiling/timers.h"
 
 static void assert_valid_list(grpc_mdelem_list *list) {
 #ifndef NDEBUG
diff --git a/src/core/transport/metadata_batch.h b/src/core/lib/transport/metadata_batch.h
index 9337b28328..f1d4726989 100644
--- a/src/core/transport/metadata_batch.h
+++ b/src/core/lib/transport/metadata_batch.h
@@ -31,14 +31,14 @@
  *
  */
 
-#ifndef GRPC_CORE_TRANSPORT_METADATA_BATCH_H
-#define GRPC_CORE_TRANSPORT_METADATA_BATCH_H
+#ifndef GRPC_CORE_LIB_TRANSPORT_METADATA_BATCH_H
+#define GRPC_CORE_LIB_TRANSPORT_METADATA_BATCH_H
 
 #include <grpc/grpc.h>
 #include <grpc/support/port_platform.h>
 #include <grpc/support/slice.h>
 #include <grpc/support/time.h>
-#include "src/core/transport/metadata.h"
+#include "src/core/lib/transport/metadata.h"
 
 typedef struct grpc_linked_mdelem {
   grpc_mdelem *md;
@@ -122,4 +122,4 @@ void grpc_metadata_batch_assert_ok(grpc_metadata_batch *comd);
   } while (0)
 #endif
 
-#endif /* GRPC_CORE_TRANSPORT_METADATA_BATCH_H */
+#endif /* GRPC_CORE_LIB_TRANSPORT_METADATA_BATCH_H */
diff --git a/src/core/transport/static_metadata.c b/src/core/lib/transport/static_metadata.c
index eeedae0619..eda277b3dc 100644
--- a/src/core/transport/static_metadata.c
+++ b/src/core/lib/transport/static_metadata.c
@@ -43,14 +43,14 @@
  * explanation of what's going on.
  */
 
-#include "src/core/transport/static_metadata.h"
+#include "src/core/lib/transport/static_metadata.h"
 
 grpc_mdstr grpc_static_mdstr_table[GRPC_STATIC_MDSTR_COUNT];
 
 grpc_mdelem grpc_static_mdelem_table[GRPC_STATIC_MDELEM_COUNT];
 uintptr_t grpc_static_mdelem_user_data[GRPC_STATIC_MDELEM_COUNT] = {
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 3, 7, 5, 2, 4, 8, 6, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 4, 8, 6, 2, 4, 8, 6, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
 
@@ -66,24 +66,95 @@ const uint8_t grpc_static_metadata_elem_indices[GRPC_STATIC_MDELEM_COUNT * 2] =
      82, 83, 84, 35, 85, 35, 86, 35, 87, 35, 88, 35};
 
 const char *const grpc_static_metadata_strings[GRPC_STATIC_MDSTR_COUNT] = {
-    "0", "1", "2", "200", "204", "206", "304", "400", "404", "500", "accept",
-    "accept-charset", "accept-encoding", "accept-language", "accept-ranges",
-    "access-control-allow-origin", "age", "allow", "application/grpc",
-    ":authority", "authorization", "cache-control", "census-bin",
-    "census-binary-bin", "content-disposition", "content-encoding",
-    "content-language", "content-length", "content-location", "content-range",
-    "content-type", "cookie", "date", "deflate", "deflate,gzip", "", "etag",
-    "expect", "expires", "from", "GET", "grpc", "grpc-accept-encoding",
-    "grpc-encoding", "grpc-internal-encoding-request", "grpc-message",
-    "grpc-status", "grpc-timeout", "gzip", "gzip, deflate", "host", "http",
-    "https", "identity", "identity,deflate", "identity,deflate,gzip",
-    "identity,gzip", "if-match", "if-modified-since", "if-none-match",
-    "if-range", "if-unmodified-since", "last-modified", "link", "location",
-    "max-forwards", ":method", ":path", "POST", "proxy-authenticate",
-    "proxy-authorization", "range", "referer", "refresh", "retry-after",
-    ":scheme", "server", "set-cookie", "/", "/index.html", ":status",
-    "strict-transport-security", "te", "trailers", "transfer-encoding",
-    "user-agent", "vary", "via", "www-authenticate"};
+    "0",
+    "1",
+    "2",
+    "200",
+    "204",
+    "206",
+    "304",
+    "400",
+    "404",
+    "500",
+    "accept",
+    "accept-charset",
+    "accept-encoding",
+    "accept-language",
+    "accept-ranges",
+    "access-control-allow-origin",
+    "age",
+    "allow",
+    "application/grpc",
+    ":authority",
+    "authorization",
+    "cache-control",
+    "census-bin",
+    "census-binary-bin",
+    "content-disposition",
+    "content-encoding",
+    "content-language",
+    "content-length",
+    "content-location",
+    "content-range",
+    "content-type",
+    "cookie",
+    "date",
+    "deflate",
+    "deflate,gzip",
+    "",
+    "etag",
+    "expect",
+    "expires",
+    "from",
+    "GET",
+    "grpc",
+    "grpc-accept-encoding",
+    "grpc-encoding",
+    "grpc-internal-encoding-request",
+    "grpc-message",
+    "grpc-status",
+    "grpc-timeout",
+    "gzip",
+    "gzip, deflate",
+    "host",
+    "http",
+    "https",
+    "identity",
+    "identity,deflate",
+    "identity,deflate,gzip",
+    "identity,gzip",
+    "if-match",
+    "if-modified-since",
+    "if-none-match",
+    "if-range",
+    "if-unmodified-since",
+    "last-modified",
+    "link",
+    "location",
+    "max-forwards",
+    ":method",
+    ":path",
+    "POST",
+    "proxy-authenticate",
+    "proxy-authorization",
+    "range",
+    "referer",
+    "refresh",
+    "retry-after",
+    ":scheme",
+    "server",
+    "set-cookie",
+    "/",
+    "/index.html",
+    ":status",
+    "strict-transport-security",
+    "te",
+    "trailers",
+    "transfer-encoding",
+    "user-agent",
+    "vary",
+    "via",
+    "www-authenticate"};
 
 const uint8_t grpc_static_accept_encoding_metadata[8] = {0,  29, 26, 30,
                                                          28, 32, 27, 31};
diff --git a/src/core/transport/static_metadata.h b/src/core/lib/transport/static_metadata.h
index 85442f8107..aff136a6d2 100644
--- a/src/core/transport/static_metadata.h
+++ b/src/core/lib/transport/static_metadata.h
@@ -43,10 +43,10 @@
  * explanation of what's going on.
  */
 
-#ifndef GRPC_CORE_TRANSPORT_STATIC_METADATA_H
-#define GRPC_CORE_TRANSPORT_STATIC_METADATA_H
+#ifndef GRPC_CORE_LIB_TRANSPORT_STATIC_METADATA_H
+#define GRPC_CORE_LIB_TRANSPORT_STATIC_METADATA_H
 
-#include "src/core/transport/metadata.h"
+#include "src/core/lib/transport/metadata.h"
 
 #define GRPC_STATIC_MDSTR_COUNT 89
 extern grpc_mdstr grpc_static_mdstr_table[GRPC_STATIC_MDSTR_COUNT];
@@ -405,4 +405,4 @@ extern const char *const grpc_static_metadata_strings[GRPC_STATIC_MDSTR_COUNT];
 extern const uint8_t grpc_static_accept_encoding_metadata[8];
 #define GRPC_MDELEM_ACCEPT_ENCODING_FOR_ALGORITHMS(algs) \
   (&grpc_static_mdelem_table[grpc_static_accept_encoding_metadata[(algs)]])
-#endif /* GRPC_CORE_TRANSPORT_STATIC_METADATA_H */
+#endif /* GRPC_CORE_LIB_TRANSPORT_STATIC_METADATA_H */
diff --git a/src/core/transport/transport.c b/src/core/lib/transport/transport.c
index 3b555fa933..18256aae5e 100644
--- a/src/core/transport/transport.c
+++ b/src/core/lib/transport/transport.c
@@ -31,11 +31,11 @@
  *
  */
 
-#include "src/core/transport/transport.h"
+#include "src/core/lib/transport/transport.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/atm.h>
 #include <grpc/support/log.h>
-#include "src/core/transport/transport_impl.h"
+#include "src/core/lib/transport/transport_impl.h"
 
 #ifdef GRPC_STREAM_REFCOUNT_DEBUG
 void grpc_stream_ref(grpc_stream_refcount *refcount, const char *reason) {
diff --git a/src/core/transport/transport.h b/src/core/lib/transport/transport.h
index 0f068dcb38..e98cfe9515 100644
--- a/src/core/transport/transport.h
+++ b/src/core/lib/transport/transport.h
@@ -31,16 +31,16 @@
  *
  */
 
-#ifndef GRPC_CORE_TRANSPORT_TRANSPORT_H
-#define GRPC_CORE_TRANSPORT_TRANSPORT_H
+#ifndef GRPC_CORE_LIB_TRANSPORT_TRANSPORT_H
+#define GRPC_CORE_LIB_TRANSPORT_TRANSPORT_H
 
 #include <stddef.h>
 
-#include "src/core/iomgr/pollset.h"
-#include "src/core/iomgr/pollset_set.h"
-#include "src/core/transport/metadata_batch.h"
-#include "src/core/transport/byte_stream.h"
-#include "src/core/channel/context.h"
+#include "src/core/lib/channel/context.h"
+#include "src/core/lib/iomgr/pollset.h"
+#include "src/core/lib/iomgr/pollset_set.h"
+#include "src/core/lib/transport/byte_stream.h"
+#include "src/core/lib/transport/metadata_batch.h"
 
 /* forward declarations */
 typedef struct grpc_transport grpc_transport;
@@ -239,4 +239,4 @@ void grpc_transport_destroy(grpc_exec_ctx *exec_ctx, grpc_transport *transport);
 char *grpc_transport_get_peer(grpc_exec_ctx *exec_ctx,
                               grpc_transport *transport);
 
-#endif /* GRPC_CORE_TRANSPORT_TRANSPORT_H */
+#endif /* GRPC_CORE_LIB_TRANSPORT_TRANSPORT_H */
diff --git a/src/core/transport/transport_impl.h b/src/core/lib/transport/transport_impl.h
index d9ecc4d2ba..92fa5d519d 100644
--- a/src/core/transport/transport_impl.h
+++ b/src/core/lib/transport/transport_impl.h
@@ -31,10 +31,10 @@
  *
  */
 
-#ifndef GRPC_CORE_TRANSPORT_TRANSPORT_IMPL_H
-#define GRPC_CORE_TRANSPORT_TRANSPORT_IMPL_H
+#ifndef GRPC_CORE_LIB_TRANSPORT_TRANSPORT_IMPL_H
+#define GRPC_CORE_LIB_TRANSPORT_TRANSPORT_IMPL_H
 
-#include "src/core/transport/transport.h"
+#include "src/core/lib/transport/transport.h"
 
 typedef struct grpc_transport_vtable {
   /* Memory required for a single stream element - this is allocated by upper
@@ -78,4 +78,4 @@ struct grpc_transport {
   const grpc_transport_vtable *vtable;
 };
 
-#endif /* GRPC_CORE_TRANSPORT_TRANSPORT_IMPL_H */
+#endif /* GRPC_CORE_LIB_TRANSPORT_TRANSPORT_IMPL_H */
diff --git a/src/core/transport/transport_op_string.c b/src/core/lib/transport/transport_op_string.c
index 98b51afc88..1fa8fa5d4f 100644
--- a/src/core/transport/transport_op_string.c
+++ b/src/core/lib/transport/transport_op_string.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,16 +31,16 @@
  *
  */
 
-#include "src/core/channel/channel_stack.h"
+#include "src/core/lib/channel/channel_stack.h"
 
 #include <stdarg.h>
 #include <stdio.h>
 #include <string.h>
 
-#include "src/core/support/string.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/string_util.h>
 #include <grpc/support/useful.h>
+#include "src/core/lib/support/string.h"
 
 /* These routines are here to facilitate debugging - they produce string
    representations of various transport data structures */
diff --git a/src/core/tsi/fake_transport_security.c b/src/core/lib/tsi/fake_transport_security.c
index 72ac32a171..4b812f4803 100644
--- a/src/core/tsi/fake_transport_security.c
+++ b/src/core/lib/tsi/fake_transport_security.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/tsi/fake_transport_security.h"
+#include "src/core/lib/tsi/fake_transport_security.h"
 
 #include <stdlib.h>
 #include <string.h>
@@ -39,7 +39,7 @@
 #include <grpc/support/log.h>
 #include <grpc/support/port_platform.h>
 #include <grpc/support/useful.h>
-#include "src/core/tsi/transport_security.h"
+#include "src/core/lib/tsi/transport_security.h"
 
 /* --- Constants. ---*/
 #define TSI_FAKE_FRAME_HEADER_SIZE 4
@@ -493,8 +493,10 @@ static void fake_handshaker_destroy(tsi_handshaker *self) {
 
 static const tsi_handshaker_vtable handshaker_vtable = {
     fake_handshaker_get_bytes_to_send_to_peer,
-    fake_handshaker_process_bytes_from_peer, fake_handshaker_get_result,
-    fake_handshaker_extract_peer, fake_handshaker_create_frame_protector,
+    fake_handshaker_process_bytes_from_peer,
+    fake_handshaker_get_result,
+    fake_handshaker_extract_peer,
+    fake_handshaker_create_frame_protector,
     fake_handshaker_destroy,
 };
 
diff --git a/src/core/tsi/fake_transport_security.h b/src/core/lib/tsi/fake_transport_security.h
index 6b8e596290..b887dfcb09 100644
--- a/src/core/tsi/fake_transport_security.h
+++ b/src/core/lib/tsi/fake_transport_security.h
@@ -31,10 +31,10 @@
  *
  */
 
-#ifndef GRPC_CORE_TSI_FAKE_TRANSPORT_SECURITY_H
-#define GRPC_CORE_TSI_FAKE_TRANSPORT_SECURITY_H
+#ifndef GRPC_CORE_LIB_TSI_FAKE_TRANSPORT_SECURITY_H
+#define GRPC_CORE_LIB_TSI_FAKE_TRANSPORT_SECURITY_H
 
-#include "src/core/tsi/transport_security_interface.h"
+#include "src/core/lib/tsi/transport_security_interface.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -58,4 +58,4 @@ tsi_frame_protector *tsi_create_fake_protector(
 }
 #endif
 
-#endif /* GRPC_CORE_TSI_FAKE_TRANSPORT_SECURITY_H */
+#endif /* GRPC_CORE_LIB_TSI_FAKE_TRANSPORT_SECURITY_H */
diff --git a/src/core/tsi/ssl_transport_security.c b/src/core/lib/tsi/ssl_transport_security.c
index 42d25ca929..d03201eec6 100644
--- a/src/core/tsi/ssl_transport_security.c
+++ b/src/core/lib/tsi/ssl_transport_security.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/tsi/ssl_transport_security.h"
+#include "src/core/lib/tsi/ssl_transport_security.h"
 
 #include <grpc/support/port_platform.h>
 
@@ -57,8 +57,8 @@
 #include <openssl/x509.h>
 #include <openssl/x509v3.h>
 
-#include "src/core/tsi/ssl_types.h"
-#include "src/core/tsi/transport_security.h"
+#include "src/core/lib/tsi/ssl_types.h"
+#include "src/core/lib/tsi/transport_security.h"
 
 /* --- Constants. ---*/
 
@@ -1039,8 +1039,10 @@ static void ssl_handshaker_destroy(tsi_handshaker *self) {
 
 static const tsi_handshaker_vtable handshaker_vtable = {
     ssl_handshaker_get_bytes_to_send_to_peer,
-    ssl_handshaker_process_bytes_from_peer, ssl_handshaker_get_result,
-    ssl_handshaker_extract_peer, ssl_handshaker_create_frame_protector,
+    ssl_handshaker_process_bytes_from_peer,
+    ssl_handshaker_get_result,
+    ssl_handshaker_extract_peer,
+    ssl_handshaker_create_frame_protector,
     ssl_handshaker_destroy,
 };
 
diff --git a/src/core/tsi/ssl_transport_security.h b/src/core/lib/tsi/ssl_transport_security.h
index 612f5c64cc..c9b9e8f54b 100644
--- a/src/core/tsi/ssl_transport_security.h
+++ b/src/core/lib/tsi/ssl_transport_security.h
@@ -31,10 +31,10 @@
  *
  */
 
-#ifndef GRPC_CORE_TSI_SSL_TRANSPORT_SECURITY_H
-#define GRPC_CORE_TSI_SSL_TRANSPORT_SECURITY_H
+#ifndef GRPC_CORE_LIB_TSI_SSL_TRANSPORT_SECURITY_H
+#define GRPC_CORE_LIB_TSI_SSL_TRANSPORT_SECURITY_H
 
-#include "src/core/tsi/transport_security_interface.h"
+#include "src/core/lib/tsi/transport_security_interface.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -171,4 +171,4 @@ int tsi_ssl_peer_matches_name(const tsi_peer *peer, const char *name);
 }
 #endif
 
-#endif /* GRPC_CORE_TSI_SSL_TRANSPORT_SECURITY_H */
+#endif /* GRPC_CORE_LIB_TSI_SSL_TRANSPORT_SECURITY_H */
diff --git a/src/core/tsi/ssl_types.h b/src/core/lib/tsi/ssl_types.h
index 6ea85fe6d4..c6e68c01ad 100644
--- a/src/core/tsi/ssl_types.h
+++ b/src/core/lib/tsi/ssl_types.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_TSI_SSL_TYPES_H
-#define GRPC_CORE_TSI_SSL_TYPES_H
+#ifndef GRPC_CORE_LIB_TSI_SSL_TYPES_H
+#define GRPC_CORE_LIB_TSI_SSL_TYPES_H
 
 /* A collection of macros to cast between various integer types that are
  * used differently between BoringSSL and OpenSSL:
@@ -52,4 +52,4 @@
 #define TSI_SIZE_AS_SIZE(x) ((int)(x))
 #endif
 
-#endif /* GRPC_CORE_TSI_SSL_TYPES_H */
+#endif /* GRPC_CORE_LIB_TSI_SSL_TYPES_H */
diff --git a/src/core/tsi/test_creds/README b/src/core/lib/tsi/test_creds/README
index eb8482d648..eb8482d648 100644
--- a/src/core/tsi/test_creds/README
+++ b/src/core/lib/tsi/test_creds/README
diff --git a/src/core/tsi/test_creds/badclient.key b/src/core/lib/tsi/test_creds/badclient.key
index 5832685122..5832685122 100644
--- a/src/core/tsi/test_creds/badclient.key
+++ b/src/core/lib/tsi/test_creds/badclient.key
diff --git a/src/core/tsi/test_creds/badclient.pem b/src/core/lib/tsi/test_creds/badclient.pem
index 1785970221..1785970221 100644
--- a/src/core/tsi/test_creds/badclient.pem
+++ b/src/core/lib/tsi/test_creds/badclient.pem
diff --git a/src/core/tsi/test_creds/badserver.key b/src/core/lib/tsi/test_creds/badserver.key
index abfbde10ff..abfbde10ff 100644
--- a/src/core/tsi/test_creds/badserver.key
+++ b/src/core/lib/tsi/test_creds/badserver.key
diff --git a/src/core/tsi/test_creds/badserver.pem b/src/core/lib/tsi/test_creds/badserver.pem
index 983c979f31..983c979f31 100644
--- a/src/core/tsi/test_creds/badserver.pem
+++ b/src/core/lib/tsi/test_creds/badserver.pem
diff --git a/src/core/tsi/test_creds/ca-openssl.cnf b/src/core/lib/tsi/test_creds/ca-openssl.cnf
index e97b945e4b..e97b945e4b 100644
--- a/src/core/tsi/test_creds/ca-openssl.cnf
+++ b/src/core/lib/tsi/test_creds/ca-openssl.cnf
diff --git a/src/core/tsi/test_creds/ca.key b/src/core/lib/tsi/test_creds/ca.key
index 03c4f950e3..03c4f950e3 100644
--- a/src/core/tsi/test_creds/ca.key
+++ b/src/core/lib/tsi/test_creds/ca.key
diff --git a/src/core/tsi/test_creds/ca.pem b/src/core/lib/tsi/test_creds/ca.pem
index 6c8511a73c..6c8511a73c 100644
--- a/src/core/tsi/test_creds/ca.pem
+++ b/src/core/lib/tsi/test_creds/ca.pem
diff --git a/src/core/tsi/test_creds/client.key b/src/core/lib/tsi/test_creds/client.key
index f48d0735d9..f48d0735d9 100644
--- a/src/core/tsi/test_creds/client.key
+++ b/src/core/lib/tsi/test_creds/client.key
diff --git a/src/core/tsi/test_creds/client.pem b/src/core/lib/tsi/test_creds/client.pem
index e332091019..e332091019 100644
--- a/src/core/tsi/test_creds/client.pem
+++ b/src/core/lib/tsi/test_creds/client.pem
diff --git a/src/core/tsi/test_creds/server0.key b/src/core/lib/tsi/test_creds/server0.key
index add153c9ae..add153c9ae 100644
--- a/src/core/tsi/test_creds/server0.key
+++ b/src/core/lib/tsi/test_creds/server0.key
diff --git a/src/core/tsi/test_creds/server0.pem b/src/core/lib/tsi/test_creds/server0.pem
index ade75d8563..ade75d8563 100644
--- a/src/core/tsi/test_creds/server0.pem
+++ b/src/core/lib/tsi/test_creds/server0.pem
diff --git a/src/core/tsi/test_creds/server1-openssl.cnf b/src/core/lib/tsi/test_creds/server1-openssl.cnf
index 8a02108289..8a02108289 100644
--- a/src/core/tsi/test_creds/server1-openssl.cnf
+++ b/src/core/lib/tsi/test_creds/server1-openssl.cnf
diff --git a/src/core/tsi/test_creds/server1.key b/src/core/lib/tsi/test_creds/server1.key
index 143a5b8765..143a5b8765 100644
--- a/src/core/tsi/test_creds/server1.key
+++ b/src/core/lib/tsi/test_creds/server1.key
diff --git a/src/core/tsi/test_creds/server1.pem b/src/core/lib/tsi/test_creds/server1.pem
index f3d43fcc5b..f3d43fcc5b 100644
--- a/src/core/tsi/test_creds/server1.pem
+++ b/src/core/lib/tsi/test_creds/server1.pem
diff --git a/src/core/tsi/transport_security.c b/src/core/lib/tsi/transport_security.c
index db219a50a6..a2c0d46196 100644
--- a/src/core/tsi/transport_security.c
+++ b/src/core/lib/tsi/transport_security.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/tsi/transport_security.h"
+#include "src/core/lib/tsi/transport_security.h"
 
 #include <stdlib.h>
 #include <string.h>
diff --git a/src/core/tsi/transport_security.h b/src/core/lib/tsi/transport_security.h
index ecc037193b..349dd0ae9c 100644
--- a/src/core/tsi/transport_security.h
+++ b/src/core/lib/tsi/transport_security.h
@@ -31,10 +31,10 @@
  *
  */
 
-#ifndef GRPC_CORE_TSI_TRANSPORT_SECURITY_H
-#define GRPC_CORE_TSI_TRANSPORT_SECURITY_H
+#ifndef GRPC_CORE_LIB_TSI_TRANSPORT_SECURITY_H
+#define GRPC_CORE_LIB_TSI_TRANSPORT_SECURITY_H
 
-#include "src/core/tsi/transport_security_interface.h"
+#include "src/core/lib/tsi/transport_security_interface.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -108,4 +108,4 @@ char *tsi_strdup(const char *src); /* Sadly, no strdup in C89. */
 }
 #endif
 
-#endif /* GRPC_CORE_TSI_TRANSPORT_SECURITY_H */
+#endif /* GRPC_CORE_LIB_TSI_TRANSPORT_SECURITY_H */
diff --git a/src/core/tsi/transport_security_interface.h b/src/core/lib/tsi/transport_security_interface.h
index 08501802f5..f88f1516a9 100644
--- a/src/core/tsi/transport_security_interface.h
+++ b/src/core/lib/tsi/transport_security_interface.h
@@ -31,8 +31,8 @@
  *
  */
 
-#ifndef GRPC_CORE_TSI_TRANSPORT_SECURITY_INTERFACE_H
-#define GRPC_CORE_TSI_TRANSPORT_SECURITY_INTERFACE_H
+#ifndef GRPC_CORE_LIB_TSI_TRANSPORT_SECURITY_INTERFACE_H
+#define GRPC_CORE_LIB_TSI_TRANSPORT_SECURITY_INTERFACE_H
 
 #include <stdint.h>
 #include <stdlib.h>
@@ -341,4 +341,4 @@ void tsi_handshaker_destroy(tsi_handshaker *self);
 }
 #endif
 
-#endif /* GRPC_CORE_TSI_TRANSPORT_SECURITY_INTERFACE_H */
+#endif /* GRPC_CORE_LIB_TSI_TRANSPORT_SECURITY_INTERFACE_H */
diff --git a/src/core/transport/chttp2/huffsyms.c b/src/core/transport/chttp2/huffsyms.c
deleted file mode 100644
index 7b138e9b5d..0000000000
--- a/src/core/transport/chttp2/huffsyms.c
+++ /dev/null
@@ -1,297 +0,0 @@
-/*
- *
- * Copyright 2015, Google Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-#include "src/core/transport/chttp2/huffsyms.h"
-
-/* Constants pulled from the HPACK spec, and converted to C using the vim
-   command:
-   :%s/.*   \([0-9a-f]\+\)  \[ *\([0-9]\+\)\]/{0x\1, \2},/g */
-const grpc_chttp2_huffsym grpc_chttp2_huffsyms[GRPC_CHTTP2_NUM_HUFFSYMS] = {
-    {0x1ff8, 13},
-    {0x7fffd8, 23},
-    {0xfffffe2, 28},
-    {0xfffffe3, 28},
-    {0xfffffe4, 28},
-    {0xfffffe5, 28},
-    {0xfffffe6, 28},
-    {0xfffffe7, 28},
-    {0xfffffe8, 28},
-    {0xffffea, 24},
-    {0x3ffffffc, 30},
-    {0xfffffe9, 28},
-    {0xfffffea, 28},
-    {0x3ffffffd, 30},
-    {0xfffffeb, 28},
-    {0xfffffec, 28},
-    {0xfffffed, 28},
-    {0xfffffee, 28},
-    {0xfffffef, 28},
-    {0xffffff0, 28},
-    {0xffffff1, 28},
-    {0xffffff2, 28},
-    {0x3ffffffe, 30},
-    {0xffffff3, 28},
-    {0xffffff4, 28},
-    {0xffffff5, 28},
-    {0xffffff6, 28},
-    {0xffffff7, 28},
-    {0xffffff8, 28},
-    {0xffffff9, 28},
-    {0xffffffa, 28},
-    {0xffffffb, 28},
-    {0x14, 6},
-    {0x3f8, 10},
-    {0x3f9, 10},
-    {0xffa, 12},
-    {0x1ff9, 13},
-    {0x15, 6},
-    {0xf8, 8},
-    {0x7fa, 11},
-    {0x3fa, 10},
-    {0x3fb, 10},
-    {0xf9, 8},
-    {0x7fb, 11},
-    {0xfa, 8},
-    {0x16, 6},
-    {0x17, 6},
-    {0x18, 6},
-    {0x0, 5},
-    {0x1, 5},
-    {0x2, 5},
-    {0x19, 6},
-    {0x1a, 6},
-    {0x1b, 6},
-    {0x1c, 6},
-    {0x1d, 6},
-    {0x1e, 6},
-    {0x1f, 6},
-    {0x5c, 7},
-    {0xfb, 8},
-    {0x7ffc, 15},
-    {0x20, 6},
-    {0xffb, 12},
-    {0x3fc, 10},
-    {0x1ffa, 13},
-    {0x21, 6},
-    {0x5d, 7},
-    {0x5e, 7},
-    {0x5f, 7},
-    {0x60, 7},
-    {0x61, 7},
-    {0x62, 7},
-    {0x63, 7},
-    {0x64, 7},
-    {0x65, 7},
-    {0x66, 7},
-    {0x67, 7},
-    {0x68, 7},
-    {0x69, 7},
-    {0x6a, 7},
-    {0x6b, 7},
-    {0x6c, 7},
-    {0x6d, 7},
-    {0x6e, 7},
-    {0x6f, 7},
-    {0x70, 7},
-    {0x71, 7},
-    {0x72, 7},
-    {0xfc, 8},
-    {0x73, 7},
-    {0xfd, 8},
-    {0x1ffb, 13},
-    {0x7fff0, 19},
-    {0x1ffc, 13},
-    {0x3ffc, 14},
-    {0x22, 6},
-    {0x7ffd, 15},
-    {0x3, 5},
-    {0x23, 6},
-    {0x4, 5},
-    {0x24, 6},
-    {0x5, 5},
-    {0x25, 6},
-    {0x26, 6},
-    {0x27, 6},
-    {0x6, 5},
-    {0x74, 7},
-    {0x75, 7},
-    {0x28, 6},
-    {0x29, 6},
-    {0x2a, 6},
-    {0x7, 5},
-    {0x2b, 6},
-    {0x76, 7},
-    {0x2c, 6},
-    {0x8, 5},
-    {0x9, 5},
-    {0x2d, 6},
-    {0x77, 7},
-    {0x78, 7},
-    {0x79, 7},
-    {0x7a, 7},
-    {0x7b, 7},
-    {0x7ffe, 15},
-    {0x7fc, 11},
-    {0x3ffd, 14},
-    {0x1ffd, 13},
-    {0xffffffc, 28},
-    {0xfffe6, 20},
-    {0x3fffd2, 22},
-    {0xfffe7, 20},
-    {0xfffe8, 20},
-    {0x3fffd3, 22},
-    {0x3fffd4, 22},
-    {0x3fffd5, 22},
-    {0x7fffd9, 23},
-    {0x3fffd6, 22},
-    {0x7fffda, 23},
-    {0x7fffdb, 23},
-    {0x7fffdc, 23},
-    {0x7fffdd, 23},
-    {0x7fffde, 23},
-    {0xffffeb, 24},
-    {0x7fffdf, 23},
-    {0xffffec, 24},
-    {0xffffed, 24},
-    {0x3fffd7, 22},
-    {0x7fffe0, 23},
-    {0xffffee, 24},
-    {0x7fffe1, 23},
-    {0x7fffe2, 23},
-    {0x7fffe3, 23},
-    {0x7fffe4, 23},
-    {0x1fffdc, 21},
-    {0x3fffd8, 22},
-    {0x7fffe5, 23},
-    {0x3fffd9, 22},
-    {0x7fffe6, 23},
-    {0x7fffe7, 23},
-    {0xffffef, 24},
-    {0x3fffda, 22},
-    {0x1fffdd, 21},
-    {0xfffe9, 20},
-    {0x3fffdb, 22},
-    {0x3fffdc, 22},
-    {0x7fffe8, 23},
-    {0x7fffe9, 23},
-    {0x1fffde, 21},
-    {0x7fffea, 23},
-    {0x3fffdd, 22},
-    {0x3fffde, 22},
-    {0xfffff0, 24},
-    {0x1fffdf, 21},
-    {0x3fffdf, 22},
-    {0x7fffeb, 23},
-    {0x7fffec, 23},
-    {0x1fffe0, 21},
-    {0x1fffe1, 21},
-    {0x3fffe0, 22},
-    {0x1fffe2, 21},
-    {0x7fffed, 23},
-    {0x3fffe1, 22},
-    {0x7fffee, 23},
-    {0x7fffef, 23},
-    {0xfffea, 20},
-    {0x3fffe2, 22},
-    {0x3fffe3, 22},
-    {0x3fffe4, 22},
-    {0x7ffff0, 23},
-    {0x3fffe5, 22},
-    {0x3fffe6, 22},
-    {0x7ffff1, 23},
-    {0x3ffffe0, 26},
-    {0x3ffffe1, 26},
-    {0xfffeb, 20},
-    {0x7fff1, 19},
-    {0x3fffe7, 22},
-    {0x7ffff2, 23},
-    {0x3fffe8, 22},
-    {0x1ffffec, 25},
-    {0x3ffffe2, 26},
-    {0x3ffffe3, 26},
-    {0x3ffffe4, 26},
-    {0x7ffffde, 27},
-    {0x7ffffdf, 27},
-    {0x3ffffe5, 26},
-    {0xfffff1, 24},
-    {0x1ffffed, 25},
-    {0x7fff2, 19},
-    {0x1fffe3, 21},
-    {0x3ffffe6, 26},
-    {0x7ffffe0, 27},
-    {0x7ffffe1, 27},
-    {0x3ffffe7, 26},
-    {0x7ffffe2, 27},
-    {0xfffff2, 24},
-    {0x1fffe4, 21},
-    {0x1fffe5, 21},
-    {0x3ffffe8, 26},
-    {0x3ffffe9, 26},
-    {0xffffffd, 28},
-    {0x7ffffe3, 27},
-    {0x7ffffe4, 27},
-    {0x7ffffe5, 27},
-    {0xfffec, 20},
-    {0xfffff3, 24},
-    {0xfffed, 20},
-    {0x1fffe6, 21},
-    {0x3fffe9, 22},
-    {0x1fffe7, 21},
-    {0x1fffe8, 21},
-    {0x7ffff3, 23},
-    {0x3fffea, 22},
-    {0x3fffeb, 22},
-    {0x1ffffee, 25},
-    {0x1ffffef, 25},
-    {0xfffff4, 24},
-    {0xfffff5, 24},
-    {0x3ffffea, 26},
-    {0x7ffff4, 23},
-    {0x3ffffeb, 26},
-    {0x7ffffe6, 27},
-    {0x3ffffec, 26},
-    {0x3ffffed, 26},
-    {0x7ffffe7, 27},
-    {0x7ffffe8, 27},
-    {0x7ffffe9, 27},
-    {0x7ffffea, 27},
-    {0x7ffffeb, 27},
-    {0xffffffe, 28},
-    {0x7ffffec, 27},
-    {0x7ffffed, 27},
-    {0x7ffffee, 27},
-    {0x7ffffef, 27},
-    {0x7fffff0, 27},
-    {0x3ffffee, 26},
-    {0x3fffffff, 30},
-};