Merge remote-tracking branch 'upstream/master' into http_connect

97 files changed, 2533 insertions, 1705 deletions

diff --git a/src/compiler/ruby_generator_helpers-inl.h b/src/compiler/ruby_generator_helpers-inl.h
index ff6939ed9f..aa3c22fea6 100644
--- a/src/compiler/ruby_generator_helpers-inl.h
+++ b/src/compiler/ruby_generator_helpers-inl.h
@@ -48,7 +48,7 @@ inline bool ServicesFilename(const grpc::protobuf::FileDescriptor *file,
       file->name().find_last_of(".proto") == file->name().size() - 1) {
     *file_name_or_error =
         file->name().substr(0, file->name().size() - proto_suffix_length) +
-        "_services.rb";
+        "_services_pb.rb";
     return true;
   } else {
     *file_name_or_error = "Invalid proto file name:  must end with .proto";
@@ -58,7 +58,7 @@ inline bool ServicesFilename(const grpc::protobuf::FileDescriptor *file,
 
 inline grpc::string MessagesRequireName(
     const grpc::protobuf::FileDescriptor *file) {
-  return Replace(file->name(), ".proto", "");
+  return Replace(file->name(), ".proto", "_pb");
 }
 
 // Get leading or trailing comments in a string. Comment lines start with "# ".
diff --git a/src/core/ext/census/grpc_filter.c b/src/core/ext/census/grpc_filter.c
index f51d850e01..3004a1fc97 100644
--- a/src/core/ext/census/grpc_filter.c
+++ b/src/core/ext/census/grpc_filter.c
@@ -138,7 +138,7 @@ static void client_init_call_elem(grpc_exec_ctx *exec_ctx,
 
 static void client_destroy_call_elem(grpc_exec_ctx *exec_ctx,
                                      grpc_call_element *elem,
-                                     const grpc_call_stats *stats,
+                                     const grpc_call_final_info *final_info,
                                      void *ignored) {
   call_data *d = elem->call_data;
   GPR_ASSERT(d != NULL);
@@ -158,7 +158,7 @@ static void server_init_call_elem(grpc_exec_ctx *exec_ctx,
 
 static void server_destroy_call_elem(grpc_exec_ctx *exec_ctx,
                                      grpc_call_element *elem,
-                                     const grpc_call_stats *stats,
+                                     const grpc_call_final_info *final_info,
                                      void *ignored) {
   call_data *d = elem->call_data;
   GPR_ASSERT(d != NULL);
diff --git a/src/core/ext/client_config/client_channel.c b/src/core/ext/client_config/client_channel.c
index a096435c98..739487a06b 100644
--- a/src/core/ext/client_config/client_channel.c
+++ b/src/core/ext/client_config/client_channel.c
@@ -444,7 +444,7 @@ static void init_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
 
 /* Destructor for call_data */
 static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
-                              const grpc_call_stats *stats,
+                              const grpc_call_final_info *final_info,
                               void *and_free_memory) {
   grpc_subchannel_call_holder_destroy(exec_ctx, elem->call_data);
   gpr_free(and_free_memory);
diff --git a/src/core/ext/client_config/lb_policy.h b/src/core/ext/client_config/lb_policy.h
index 3cfd041d3a..a2f5446fc6 100644
--- a/src/core/ext/client_config/lb_policy.h
+++ b/src/core/ext/client_config/lb_policy.h
@@ -73,7 +73,7 @@ struct grpc_lb_policy_vtable {
   void (*ping_one)(grpc_exec_ctx *exec_ctx, grpc_lb_policy *policy,
                    grpc_closure *closure);
 
-  /** try to enter a READY connectivity state */
+  /** Try to enter a READY connectivity state */
   void (*exit_idle)(grpc_exec_ctx *exec_ctx, grpc_lb_policy *policy);
 
   /** check the current connectivity of the lb_policy */
@@ -82,7 +82,9 @@ struct grpc_lb_policy_vtable {
       grpc_error **connectivity_error);
 
   /** call notify when the connectivity state of a channel changes from *state.
-      Updates *state with the new state of the policy */
+      Updates *state with the new state of the policy. Calling with a NULL \a
+      state cancels the subscription.
+      */
   void (*notify_on_state_change)(grpc_exec_ctx *exec_ctx,
                                  grpc_lb_policy *policy,
                                  grpc_connectivity_state *state,
@@ -125,7 +127,7 @@ void grpc_lb_policy_init(grpc_lb_policy *policy,
 /** Given initial metadata in \a initial_metadata, find an appropriate
     target for this rpc, and 'return' it by calling \a on_complete after setting
     \a target.
-    Picking can be asynchronous. Any IO should be done under \a pollset. */
+    Picking can be asynchronous. Any IO should be done under \a pollent. */
 int grpc_lb_policy_pick(grpc_exec_ctx *exec_ctx, grpc_lb_policy *policy,
                         grpc_polling_entity *pollent,
                         grpc_metadata_batch *initial_metadata,
@@ -147,8 +149,11 @@ void grpc_lb_policy_cancel_picks(grpc_exec_ctx *exec_ctx,
                                  uint32_t initial_metadata_flags_mask,
                                  uint32_t initial_metadata_flags_eq);
 
+/** Try to enter a READY connectivity state */
 void grpc_lb_policy_exit_idle(grpc_exec_ctx *exec_ctx, grpc_lb_policy *policy);
 
+/* Call notify when the connectivity state of a channel changes from \a *state.
+ * Updates \a *state with the new state of the policy */
 void grpc_lb_policy_notify_on_state_change(grpc_exec_ctx *exec_ctx,
                                            grpc_lb_policy *policy,
                                            grpc_connectivity_state *state,
diff --git a/src/core/ext/lb_policy/grpclb/grpclb.c b/src/core/ext/lb_policy/grpclb/grpclb.c
new file mode 100644
index 0000000000..dec25efe61
--- /dev/null
+++ b/src/core/ext/lb_policy/grpclb/grpclb.c
@@ -0,0 +1,1039 @@
+/*
+ *
+ * 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.
+ *
+ */
+
+/** Implementation of the gRPC LB policy.
+ *
+ * This policy takes as input a set of resolved addresses {a1..an} for which the
+ * LB set was set (it's the resolver's responsibility to ensure this). That is
+ * to say, {a1..an} represent a collection of LB servers.
+ *
+ * An internal channel (\a glb_lb_policy.lb_channel) is created over {a1..an}.
+ * This channel behaves just like a regular channel. In particular, the
+ * constructed URI over the addresses a1..an will use the default pick first
+ * policy to select from this list of LB server backends.
+ *
+ * The first time the policy gets a request for a pick, a ping, or to exit the
+ * idle state, \a query_for_backends() is called. It creates an instance of \a
+ * lb_client_data, an internal struct meant to contain the data associated with
+ * the internal communication with the LB server. This instance is created via
+ * \a lb_client_data_create(). There, the call over lb_channel to pick-first
+ * from {a1..an} is created, the \a LoadBalancingRequest message is assembled
+ * and all necessary callbacks for the progress of the internal call configured.
+ *
+ * Back in \a query_for_backends(), the internal *streaming* call to the LB
+ * server (whichever address from {a1..an} pick-first chose) is kicked off.
+ * It'll progress over the callbacks configured in \a lb_client_data_create()
+ * (see the field docstrings of \a lb_client_data for more details).
+ *
+ * If the call fails with UNIMPLEMENTED, the original call will also fail.
+ * There's a misconfiguration somewhere: at least one of {a1..an} isn't a LB
+ * server, which contradicts the LB bit being set. If the internal call times
+ * out, the usual behavior of pick-first applies, continuing to pick from the
+ * list {a1..an}.
+ *
+ * Upon sucesss, a \a LoadBalancingResponse is expected in \a res_recv_cb. An
+ * invalid one results in the termination of the streaming call. A new streaming
+ * call should be created if possible, failing the original call otherwise.
+ * For a valid \a LoadBalancingResponse, the server list of actual backends is
+ * extracted. A Round Robin policy will be created from this list. There are two
+ * possible scenarios:
+ *
+ * 1. This is the first server list received. There was no previous instance of
+ *    the Round Robin policy. \a rr_handover() will instantiate the RR policy
+ *    and perform all the pending operations over it.
+ * 2. There's already a RR policy instance active. We need to introduce the new
+ *    one build from the new serverlist, but taking care not to disrupt the
+ *    operations in progress over the old RR instance. This is done by
+ *    decreasing the reference count on the old policy. The moment no more
+ *    references are held on the old RR policy, it'll be destroyed and \a
+ *    rr_connectivity_changed notified with a \a GRPC_CHANNEL_SHUTDOWN state.
+ *    At this point we can transition to a new RR instance safely, which is done
+ *    once again via \a rr_handover().
+ *
+ *
+ * Once a RR policy instance is in place (and getting updated as described),
+ * calls to for a pick, a ping or a cancellation will be serviced right away by
+ * forwarding them to the RR instance. Any time there's no RR policy available
+ * (ie, right after the creation of the gRPCLB policy, if an empty serverlist
+ * is received, etc), pick/ping requests are added to a list of pending
+ * picks/pings to be flushed and serviced as part of \a rr_handover() the moment
+ * the RR policy instance becomes available.
+ *
+ * \see https://github.com/grpc/grpc/blob/master/doc/load-balancing.md for the
+ * high level design and details. */
+
+/* TODO(dgq):
+ * - Implement LB service forwarding (point 2c. in the doc's diagram).
+ */
+
+#include <string.h>
+
+#include <grpc/byte_buffer_reader.h>
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/host_port.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/ext/client_config/client_channel_factory.h"
+#include "src/core/ext/client_config/lb_policy_registry.h"
+#include "src/core/ext/client_config/parse_address.h"
+#include "src/core/ext/lb_policy/grpclb/grpclb.h"
+#include "src/core/ext/lb_policy/grpclb/load_balancer_api.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/support/string.h"
+#include "src/core/lib/surface/call.h"
+#include "src/core/lib/surface/channel.h"
+
+int grpc_lb_glb_trace = 0;
+
+typedef struct wrapped_rr_closure_arg {
+  /* the original closure. Usually a on_complete/notify cb for pick() and ping()
+   * calls against the internal RR instance, respectively. */
+  grpc_closure *wrapped_closure;
+
+  /* The RR instance related to the closure */
+  grpc_lb_policy *rr_policy;
+
+  /* when not NULL, represents a pending_{pick,ping} node to be freed upon
+   * closure execution */
+  void *owning_pending_node; /* to be freed if not NULL */
+} wrapped_rr_closure_arg;
+
+/* The \a on_complete closure passed as part of the pick requires keeping a
+ * reference to its associated round robin instance. We wrap this closure in
+ * order to unref the round robin instance upon its invocation */
+static void wrapped_rr_closure(grpc_exec_ctx *exec_ctx, void *arg,
+                               grpc_error *error) {
+  wrapped_rr_closure_arg *wc_arg = arg;
+  if (wc_arg->rr_policy != NULL) {
+    if (grpc_lb_glb_trace) {
+      gpr_log(GPR_INFO, "Unreffing RR (0x%" PRIxPTR ")",
+              (intptr_t)wc_arg->rr_policy);
+    }
+    GRPC_LB_POLICY_UNREF(exec_ctx, wc_arg->rr_policy, "wrapped_rr_closure");
+  }
+  GPR_ASSERT(wc_arg->wrapped_closure != NULL);
+  grpc_exec_ctx_sched(exec_ctx, wc_arg->wrapped_closure, error, NULL);
+  gpr_free(wc_arg->owning_pending_node);
+}
+
+/* Linked list of pending pick requests. It stores all information needed to
+ * eventually call (Round Robin's) pick() on them. They mainly stay pending
+ * waiting for the RR policy to be created/updated.
+ *
+ * One particularity is the wrapping of the user-provided \a on_complete closure
+ * (in \a wrapped_on_complete and \a wrapped_on_complete_arg). This is needed in
+ * order to correctly unref the RR policy instance upon completion of the pick.
+ * See \a wrapped_rr_closure for details. */
+typedef struct pending_pick {
+  struct pending_pick *next;
+
+  /* polling entity for the pick()'s async notification */
+  grpc_polling_entity *pollent;
+
+  /* the initial metadata for the pick. See grpc_lb_policy_pick() */
+  grpc_metadata_batch *initial_metadata;
+
+  /* bitmask passed to pick() and used for selective cancelling. See
+   * grpc_lb_policy_cancel_picks() */
+  uint32_t initial_metadata_flags;
+
+  /* output argument where to store the pick()ed connected subchannel, or NULL
+   * upon error. */
+  grpc_connected_subchannel **target;
+
+  /* a closure wrapping the original on_complete one to be invoked once the
+   * pick() has completed (regardless of success) */
+  grpc_closure wrapped_on_complete;
+
+  /* args for wrapped_on_complete */
+  wrapped_rr_closure_arg wrapped_on_complete_arg;
+} pending_pick;
+
+static void add_pending_pick(pending_pick **root, grpc_polling_entity *pollent,
+                             grpc_metadata_batch *initial_metadata,
+                             uint32_t initial_metadata_flags,
+                             grpc_connected_subchannel **target,
+                             grpc_closure *on_complete) {
+  pending_pick *pp = gpr_malloc(sizeof(*pp));
+  memset(pp, 0, sizeof(pending_pick));
+  memset(&pp->wrapped_on_complete_arg, 0, sizeof(wrapped_rr_closure_arg));
+  pp->next = *root;
+  pp->pollent = pollent;
+  pp->target = target;
+  pp->initial_metadata = initial_metadata;
+  pp->initial_metadata_flags = initial_metadata_flags;
+  pp->wrapped_on_complete_arg.wrapped_closure = on_complete;
+  grpc_closure_init(&pp->wrapped_on_complete, wrapped_rr_closure,
+                    &pp->wrapped_on_complete_arg);
+  *root = pp;
+}
+
+/* Same as the \a pending_pick struct but for ping operations */
+typedef struct pending_ping {
+  struct pending_ping *next;
+
+  /* a closure wrapping the original on_complete one to be invoked once the
+   * ping() has completed (regardless of success) */
+  grpc_closure wrapped_notify;
+
+  /* args for wrapped_notify */
+  wrapped_rr_closure_arg wrapped_notify_arg;
+} pending_ping;
+
+static void add_pending_ping(pending_ping **root, grpc_closure *notify) {
+  pending_ping *pping = gpr_malloc(sizeof(*pping));
+  memset(pping, 0, sizeof(pending_ping));
+  memset(&pping->wrapped_notify_arg, 0, sizeof(wrapped_rr_closure_arg));
+  pping->next = *root;
+  grpc_closure_init(&pping->wrapped_notify, wrapped_rr_closure,
+                    &pping->wrapped_notify_arg);
+  pping->wrapped_notify_arg.wrapped_closure = notify;
+  *root = pping;
+}
+
+/*
+ * glb_lb_policy
+ */
+typedef struct rr_connectivity_data rr_connectivity_data;
+struct lb_client_data;
+static const grpc_lb_policy_vtable glb_lb_policy_vtable;
+typedef struct glb_lb_policy {
+  /** base policy: must be first */
+  grpc_lb_policy base;
+
+  /** mutex protecting remaining members */
+  gpr_mu mu;
+
+  grpc_client_channel_factory *cc_factory;
+
+  /** for communicating with the LB server */
+  grpc_channel *lb_channel;
+
+  /** the RR policy to use of the backend servers returned by the LB server */
+  grpc_lb_policy *rr_policy;
+
+  bool started_picking;
+
+  /** our connectivity state tracker */
+  grpc_connectivity_state_tracker state_tracker;
+
+  /** stores the deserialized response from the LB. May be NULL until one such
+   * response has arrived. */
+  grpc_grpclb_serverlist *serverlist;
+
+  /** list of picks that are waiting on RR's policy connectivity */
+  pending_pick *pending_picks;
+
+  /** list of pings that are waiting on RR's policy connectivity */
+  pending_ping *pending_pings;
+
+  /** client data associated with the LB server communication */
+  struct lb_client_data *lb_client;
+
+  /** for tracking of the RR connectivity */
+  rr_connectivity_data *rr_connectivity;
+
+  /* a wrapped (see \a wrapped_rr_closure) on-complete closure for readily
+   * available RR picks */
+  grpc_closure wrapped_on_complete;
+
+  /* arguments for the wrapped_on_complete closure */
+  wrapped_rr_closure_arg wc_arg;
+} glb_lb_policy;
+
+/* Keeps track and reacts to changes in connectivity of the RR instance */
+struct rr_connectivity_data {
+  grpc_closure on_change;
+  grpc_connectivity_state state;
+  glb_lb_policy *glb_policy;
+};
+
+static grpc_lb_policy *create_rr(grpc_exec_ctx *exec_ctx,
+                                 const grpc_grpclb_serverlist *serverlist,
+                                 glb_lb_policy *glb_policy) {
+  /* TODO(dgq): support mixed ip version */
+  GPR_ASSERT(serverlist != NULL && serverlist->num_servers > 0);
+  char **host_ports = gpr_malloc(sizeof(char *) * serverlist->num_servers);
+  for (size_t i = 0; i < serverlist->num_servers; ++i) {
+    gpr_join_host_port(&host_ports[i], serverlist->servers[i]->ip_address,
+                       serverlist->servers[i]->port);
+  }
+
+  size_t uri_path_len;
+  char *concat_ipports = gpr_strjoin_sep(
+      (const char **)host_ports, serverlist->num_servers, ",", &uri_path_len);
+
+  grpc_lb_policy_args args;
+  args.client_channel_factory = glb_policy->cc_factory;
+  args.addresses = gpr_malloc(sizeof(grpc_resolved_addresses));
+  args.addresses->naddrs = serverlist->num_servers;
+  args.addresses->addrs =
+      gpr_malloc(sizeof(grpc_resolved_address) * args.addresses->naddrs);
+  size_t out_addrs_idx = 0;
+  for (size_t i = 0; i < serverlist->num_servers; ++i) {
+    grpc_uri uri;
+    struct sockaddr_storage sa;
+    size_t sa_len;
+    uri.path = host_ports[i];
+    if (parse_ipv4(&uri, &sa, &sa_len)) { /* TODO(dgq): add support for ipv6 */
+      memcpy(args.addresses->addrs[out_addrs_idx].addr, &sa, sa_len);
+      args.addresses->addrs[out_addrs_idx].len = sa_len;
+      ++out_addrs_idx;
+    } else {
+      gpr_log(GPR_ERROR, "Invalid LB service address '%s', ignoring.",
+              host_ports[i]);
+    }
+  }
+
+  grpc_lb_policy *rr = grpc_lb_policy_create(exec_ctx, "round_robin", &args);
+
+  gpr_free(concat_ipports);
+  for (size_t i = 0; i < serverlist->num_servers; i++) {
+    gpr_free(host_ports[i]);
+  }
+  gpr_free(host_ports);
+  gpr_free(args.addresses->addrs);
+  gpr_free(args.addresses);
+  return rr;
+}
+
+static void rr_handover(grpc_exec_ctx *exec_ctx, glb_lb_policy *glb_policy,
+                        grpc_error *error) {
+  GRPC_ERROR_REF(error);
+  glb_policy->rr_policy =
+      create_rr(exec_ctx, glb_policy->serverlist, glb_policy);
+
+  if (grpc_lb_glb_trace) {
+    gpr_log(GPR_INFO, "Created RR policy (0x%" PRIxPTR ")",
+            (intptr_t)glb_policy->rr_policy);
+  }
+  GPR_ASSERT(glb_policy->rr_policy != NULL);
+  glb_policy->rr_connectivity->state = grpc_lb_policy_check_connectivity(
+      exec_ctx, glb_policy->rr_policy, &error);
+  grpc_lb_policy_notify_on_state_change(
+      exec_ctx, glb_policy->rr_policy, &glb_policy->rr_connectivity->state,
+      &glb_policy->rr_connectivity->on_change);
+  grpc_connectivity_state_set(exec_ctx, &glb_policy->state_tracker,
+                              glb_policy->rr_connectivity->state, error,
+                              "rr_handover");
+  grpc_lb_policy_exit_idle(exec_ctx, glb_policy->rr_policy);
+
+  /* flush pending ops */
+  pending_pick *pp;
+  while ((pp = glb_policy->pending_picks)) {
+    glb_policy->pending_picks = pp->next;
+    GRPC_LB_POLICY_REF(glb_policy->rr_policy, "rr_handover_pending_pick");
+    pp->wrapped_on_complete_arg.rr_policy = glb_policy->rr_policy;
+    if (grpc_lb_glb_trace) {
+      gpr_log(GPR_INFO, "Pending pick about to PICK from 0x%" PRIxPTR "",
+              (intptr_t)glb_policy->rr_policy);
+    }
+    grpc_lb_policy_pick(exec_ctx, glb_policy->rr_policy, pp->pollent,
+                        pp->initial_metadata, pp->initial_metadata_flags,
+                        pp->target, &pp->wrapped_on_complete);
+    pp->wrapped_on_complete_arg.owning_pending_node = pp;
+  }
+
+  pending_ping *pping;
+  while ((pping = glb_policy->pending_pings)) {
+    glb_policy->pending_pings = pping->next;
+    GRPC_LB_POLICY_REF(glb_policy->rr_policy, "rr_handover_pending_ping");
+    pping->wrapped_notify_arg.rr_policy = glb_policy->rr_policy;
+    if (grpc_lb_glb_trace) {
+      gpr_log(GPR_INFO, "Pending ping about to PING from 0x%" PRIxPTR "",
+              (intptr_t)glb_policy->rr_policy);
+    }
+    grpc_lb_policy_ping_one(exec_ctx, glb_policy->rr_policy,
+                            &pping->wrapped_notify);
+    pping->wrapped_notify_arg.owning_pending_node = pping;
+  }
+  GRPC_ERROR_UNREF(error);
+}
+
+static void rr_connectivity_changed(grpc_exec_ctx *exec_ctx, void *arg,
+                                    grpc_error *error) {
+  rr_connectivity_data *rr_conn_data = arg;
+  glb_lb_policy *glb_policy = rr_conn_data->glb_policy;
+  if (rr_conn_data->state == GRPC_CHANNEL_SHUTDOWN) {
+    if (glb_policy->serverlist != NULL) {
+      /* a RR policy is shutting down but there's a serverlist available ->
+       * perform a handover */
+      rr_handover(exec_ctx, glb_policy, error);
+    } else {
+      /* shutting down and no new serverlist available. Bail out. */
+      gpr_free(rr_conn_data);
+    }
+  } else {
+    if (error == GRPC_ERROR_NONE) {
+      /* RR not shutting down. Mimic the RR's policy state */
+      grpc_connectivity_state_set(exec_ctx, &glb_policy->state_tracker,
+                                  rr_conn_data->state, error,
+                                  "rr_connectivity_changed");
+      /* resubscribe */
+      grpc_lb_policy_notify_on_state_change(exec_ctx, glb_policy->rr_policy,
+                                            &rr_conn_data->state,
+                                            &rr_conn_data->on_change);
+    } else { /* error */
+      gpr_free(rr_conn_data);
+    }
+  }
+  GRPC_ERROR_UNREF(error);
+}
+
+static grpc_lb_policy *glb_create(grpc_exec_ctx *exec_ctx,
+                                  grpc_lb_policy_factory *factory,
+                                  grpc_lb_policy_args *args) {
+  glb_lb_policy *glb_policy = gpr_malloc(sizeof(*glb_policy));
+  memset(glb_policy, 0, sizeof(*glb_policy));
+
+  /* All input addresses in args->addresses come from a resolver that claims
+   * they are LB services. It's the resolver's responsibility to make sure this
+   * policy is only instantiated and used in that case.
+   *
+   * Create a client channel over them to communicate with a LB service */
+  glb_policy->cc_factory = args->client_channel_factory;
+  GPR_ASSERT(glb_policy->cc_factory != NULL);
+  if (args->addresses->naddrs == 0) {
+    return NULL;
+  }
+
+  /* construct a target from the args->addresses, in the form
+   * ipvX://ip1:port1,ip2:port2,...
+   * TODO(dgq): support mixed ip version */
+  char **addr_strs = gpr_malloc(sizeof(char *) * args->addresses->naddrs);
+  addr_strs[0] =
+      grpc_sockaddr_to_uri((const struct sockaddr *)&args->addresses->addrs[0]);
+  for (size_t i = 1; i < args->addresses->naddrs; i++) {
+    GPR_ASSERT(grpc_sockaddr_to_string(
+                   &addr_strs[i],
+                   (const struct sockaddr *)&args->addresses->addrs[i],
+                   true) == 0);
+  }
+  size_t uri_path_len;
+  char *target_uri_str = gpr_strjoin_sep(
+      (const char **)addr_strs, args->addresses->naddrs, ",", &uri_path_len);
+
+  /* will pick using pick_first */
+  glb_policy->lb_channel = grpc_client_channel_factory_create_channel(
+      exec_ctx, glb_policy->cc_factory, target_uri_str,
+      GRPC_CLIENT_CHANNEL_TYPE_LOAD_BALANCING, NULL);
+
+  gpr_free(target_uri_str);
+  for (size_t i = 0; i < args->addresses->naddrs; i++) {
+    gpr_free(addr_strs[i]);
+  }
+  gpr_free(addr_strs);
+
+  if (glb_policy->lb_channel == NULL) {
+    gpr_free(glb_policy);
+    return NULL;
+  }
+
+  rr_connectivity_data *rr_connectivity =
+      gpr_malloc(sizeof(rr_connectivity_data));
+  memset(rr_connectivity, 0, sizeof(rr_connectivity_data));
+  grpc_closure_init(&rr_connectivity->on_change, rr_connectivity_changed,
+                    rr_connectivity);
+  rr_connectivity->glb_policy = glb_policy;
+  glb_policy->rr_connectivity = rr_connectivity;
+
+  grpc_lb_policy_init(&glb_policy->base, &glb_lb_policy_vtable);
+  gpr_mu_init(&glb_policy->mu);
+  grpc_connectivity_state_init(&glb_policy->state_tracker, GRPC_CHANNEL_IDLE,
+                               "grpclb");
+  return &glb_policy->base;
+}
+
+static void glb_destroy(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol) {
+  glb_lb_policy *glb_policy = (glb_lb_policy *)pol;
+  GPR_ASSERT(glb_policy->pending_picks == NULL);
+  GPR_ASSERT(glb_policy->pending_pings == NULL);
+  grpc_channel_destroy(glb_policy->lb_channel);
+  glb_policy->lb_channel = NULL;
+  grpc_connectivity_state_destroy(exec_ctx, &glb_policy->state_tracker);
+  if (glb_policy->serverlist != NULL) {
+    grpc_grpclb_destroy_serverlist(glb_policy->serverlist);
+  }
+  gpr_mu_destroy(&glb_policy->mu);
+  gpr_free(glb_policy);
+}
+
+static void lb_client_data_destroy(struct lb_client_data *lb_client);
+static void glb_shutdown(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol) {
+  glb_lb_policy *glb_policy = (glb_lb_policy *)pol;
+  gpr_mu_lock(&glb_policy->mu);
+
+  pending_pick *pp = glb_policy->pending_picks;
+  glb_policy->pending_picks = NULL;
+  pending_ping *pping = glb_policy->pending_pings;
+  glb_policy->pending_pings = NULL;
+  gpr_mu_unlock(&glb_policy->mu);
+
+  while (pp != NULL) {
+    pending_pick *next = pp->next;
+    *pp->target = NULL;
+    grpc_exec_ctx_sched(exec_ctx, &pp->wrapped_on_complete, GRPC_ERROR_NONE,
+                        NULL);
+    gpr_free(pp);
+    pp = next;
+  }
+
+  while (pping != NULL) {
+    pending_ping *next = pping->next;
+    grpc_exec_ctx_sched(exec_ctx, &pping->wrapped_notify, GRPC_ERROR_NONE,
+                        NULL);
+    pping = next;
+  }
+
+  if (glb_policy->rr_policy) {
+    /* unsubscribe */
+    grpc_lb_policy_notify_on_state_change(
+        exec_ctx, glb_policy->rr_policy, NULL,
+        &glb_policy->rr_connectivity->on_change);
+    GRPC_LB_POLICY_UNREF(exec_ctx, glb_policy->rr_policy, "glb_shutdown");
+  }
+
+  lb_client_data_destroy(glb_policy->lb_client);
+  glb_policy->lb_client = NULL;
+
+  grpc_connectivity_state_set(
+      exec_ctx, &glb_policy->state_tracker, GRPC_CHANNEL_SHUTDOWN,
+      GRPC_ERROR_CREATE("Channel Shutdown"), "glb_shutdown");
+}
+
+static void glb_cancel_pick(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
+                            grpc_connected_subchannel **target) {
+  glb_lb_policy *glb_policy = (glb_lb_policy *)pol;
+  gpr_mu_lock(&glb_policy->mu);
+  pending_pick *pp = glb_policy->pending_picks;
+  glb_policy->pending_picks = NULL;
+  while (pp != NULL) {
+    pending_pick *next = pp->next;
+    if (pp->target == target) {
+      grpc_polling_entity_del_from_pollset_set(
+          exec_ctx, pp->pollent, glb_policy->base.interested_parties);
+      *target = NULL;
+      grpc_exec_ctx_sched(exec_ctx, &pp->wrapped_on_complete,
+                          GRPC_ERROR_CANCELLED, NULL);
+      gpr_free(pp);
+    } else {
+      pp->next = glb_policy->pending_picks;
+      glb_policy->pending_picks = pp;
+    }
+    pp = next;
+  }
+  gpr_mu_unlock(&glb_policy->mu);
+}
+
+static grpc_call *lb_client_data_get_call(struct lb_client_data *lb_client);
+static void glb_cancel_picks(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
+                             uint32_t initial_metadata_flags_mask,
+                             uint32_t initial_metadata_flags_eq) {
+  glb_lb_policy *glb_policy = (glb_lb_policy *)pol;
+  gpr_mu_lock(&glb_policy->mu);
+  if (glb_policy->lb_client != NULL) {
+    /* cancel the call to the load balancer service, if any */
+    grpc_call_cancel(lb_client_data_get_call(glb_policy->lb_client), NULL);
+  }
+  pending_pick *pp = glb_policy->pending_picks;
+  glb_policy->pending_picks = NULL;
+  while (pp != NULL) {
+    pending_pick *next = pp->next;
+    if ((pp->initial_metadata_flags & initial_metadata_flags_mask) ==
+        initial_metadata_flags_eq) {
+      grpc_polling_entity_del_from_pollset_set(
+          exec_ctx, pp->pollent, glb_policy->base.interested_parties);
+      grpc_exec_ctx_sched(exec_ctx, &pp->wrapped_on_complete,
+                          GRPC_ERROR_CANCELLED, NULL);
+      gpr_free(pp);
+    } else {
+      pp->next = glb_policy->pending_picks;
+      glb_policy->pending_picks = pp;
+    }
+    pp = next;
+  }
+  gpr_mu_unlock(&glb_policy->mu);
+}
+
+static void query_for_backends(grpc_exec_ctx *exec_ctx,
+                               glb_lb_policy *glb_policy);
+static void start_picking(grpc_exec_ctx *exec_ctx, glb_lb_policy *glb_policy) {
+  glb_policy->started_picking = true;
+  query_for_backends(exec_ctx, glb_policy);
+}
+
+static void glb_exit_idle(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol) {
+  glb_lb_policy *glb_policy = (glb_lb_policy *)pol;
+  gpr_mu_lock(&glb_policy->mu);
+  if (!glb_policy->started_picking) {
+    start_picking(exec_ctx, glb_policy);
+  }
+  gpr_mu_unlock(&glb_policy->mu);
+}
+
+static int glb_pick(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
+                    grpc_polling_entity *pollent,
+                    grpc_metadata_batch *initial_metadata,
+                    uint32_t initial_metadata_flags,
+                    grpc_connected_subchannel **target,
+                    grpc_closure *on_complete) {
+  glb_lb_policy *glb_policy = (glb_lb_policy *)pol;
+  gpr_mu_lock(&glb_policy->mu);
+  int r;
+
+  if (glb_policy->rr_policy != NULL) {
+    if (grpc_lb_glb_trace) {
+      gpr_log(GPR_INFO, "about to PICK from 0x%" PRIxPTR "",
+              (intptr_t)glb_policy->rr_policy);
+    }
+    GRPC_LB_POLICY_REF(glb_policy->rr_policy, "glb_pick");
+    memset(&glb_policy->wc_arg, 0, sizeof(wrapped_rr_closure_arg));
+    glb_policy->wc_arg.rr_policy = glb_policy->rr_policy;
+    glb_policy->wc_arg.wrapped_closure = on_complete;
+    grpc_closure_init(&glb_policy->wrapped_on_complete, wrapped_rr_closure,
+                      &glb_policy->wc_arg);
+    r = grpc_lb_policy_pick(exec_ctx, glb_policy->rr_policy, pollent,
+                            initial_metadata, initial_metadata_flags, target,
+                            &glb_policy->wrapped_on_complete);
+    if (r != 0) {
+      /* the call to grpc_lb_policy_pick has been sychronous. Unreffing the RR
+       * policy and notify the original callback */
+      glb_policy->wc_arg.wrapped_closure = NULL;
+      if (grpc_lb_glb_trace) {
+        gpr_log(GPR_INFO, "Unreffing RR (0x%" PRIxPTR ")",
+                (intptr_t)glb_policy->wc_arg.rr_policy);
+      }
+      GRPC_LB_POLICY_UNREF(exec_ctx, glb_policy->wc_arg.rr_policy, "glb_pick");
+      grpc_exec_ctx_sched(exec_ctx, glb_policy->wc_arg.wrapped_closure,
+                          GRPC_ERROR_NONE, NULL);
+    }
+  } else {
+    grpc_polling_entity_add_to_pollset_set(exec_ctx, pollent,
+                                           glb_policy->base.interested_parties);
+    add_pending_pick(&glb_policy->pending_picks, pollent, initial_metadata,
+                     initial_metadata_flags, target, on_complete);
+
+    if (!glb_policy->started_picking) {
+      start_picking(exec_ctx, glb_policy);
+    }
+    r = 0;
+  }
+  gpr_mu_unlock(&glb_policy->mu);
+  return r;
+}
+
+static grpc_connectivity_state glb_check_connectivity(
+    grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
+    grpc_error **connectivity_error) {
+  glb_lb_policy *glb_policy = (glb_lb_policy *)pol;
+  grpc_connectivity_state st;
+  gpr_mu_lock(&glb_policy->mu);
+  st = grpc_connectivity_state_check(&glb_policy->state_tracker,
+                                     connectivity_error);
+  gpr_mu_unlock(&glb_policy->mu);
+  return st;
+}
+
+static void glb_ping_one(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
+                         grpc_closure *closure) {
+  glb_lb_policy *glb_policy = (glb_lb_policy *)pol;
+  gpr_mu_lock(&glb_policy->mu);
+  if (glb_policy->rr_policy) {
+    grpc_lb_policy_ping_one(exec_ctx, glb_policy->rr_policy, closure);
+  } else {
+    add_pending_ping(&glb_policy->pending_pings, closure);
+    if (!glb_policy->started_picking) {
+      start_picking(exec_ctx, glb_policy);
+    }
+  }
+  gpr_mu_unlock(&glb_policy->mu);
+}
+
+static void glb_notify_on_state_change(grpc_exec_ctx *exec_ctx,
+                                       grpc_lb_policy *pol,
+                                       grpc_connectivity_state *current,
+                                       grpc_closure *notify) {
+  glb_lb_policy *glb_policy = (glb_lb_policy *)pol;
+  gpr_mu_lock(&glb_policy->mu);
+  grpc_connectivity_state_notify_on_state_change(
+      exec_ctx, &glb_policy->state_tracker, current, notify);
+
+  gpr_mu_unlock(&glb_policy->mu);
+}
+
+/*
+ * lb_client_data
+ *
+ * Used internally for the client call to the LB */
+typedef struct lb_client_data {
+  gpr_mu mu;
+
+  /* called once initial metadata's been sent */
+  grpc_closure md_sent;
+
+  /* called once initial metadata's been received */
+  grpc_closure md_rcvd;
+
+  /* called once the LoadBalanceRequest has been sent to the LB server. See
+   * src/proto/grpc/.../load_balancer.proto */
+  grpc_closure req_sent;
+
+  /* A response from the LB server has been received (or error). Process it */
+  grpc_closure res_rcvd;
+
+  /* After the client has sent a close to the LB server */
+  grpc_closure close_sent;
+
+  /* ... and the status from the LB server has been received */
+  grpc_closure srv_status_rcvd;
+
+  grpc_call *lb_call;    /* streaming call to the LB server, */
+  gpr_timespec deadline; /* for the streaming call to the LB server */
+
+  grpc_metadata_array initial_metadata_recv;  /* initial MD from LB server */
+  grpc_metadata_array trailing_metadata_recv; /* trailing MD from LB server */
+
+  /* what's being sent to the LB server. Note that its value may vary if the LB
+   * server indicates a redirect. */
+  grpc_byte_buffer *request_payload;
+
+  /* response from the LB server, if any. Processed in res_recv_cb() */
+  grpc_byte_buffer *response_payload;
+
+  /* the call's status and status detailset in srv_status_rcvd_cb() */
+  grpc_status_code status;
+  char *status_details;
+  size_t status_details_capacity;
+
+  /* pointer back to the enclosing policy */
+  glb_lb_policy *glb_policy;
+} lb_client_data;
+
+static void md_sent_cb(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error);
+static void md_recv_cb(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error);
+static void req_sent_cb(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error);
+static void res_recv_cb(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error);
+static void close_sent_cb(grpc_exec_ctx *exec_ctx, void *arg,
+                          grpc_error *error);
+static void srv_status_rcvd_cb(grpc_exec_ctx *exec_ctx, void *arg,
+                               grpc_error *error);
+
+static lb_client_data *lb_client_data_create(glb_lb_policy *glb_policy) {
+  lb_client_data *lb_client = gpr_malloc(sizeof(lb_client_data));
+  memset(lb_client, 0, sizeof(lb_client_data));
+
+  gpr_mu_init(&lb_client->mu);
+  grpc_closure_init(&lb_client->md_sent, md_sent_cb, lb_client);
+
+  grpc_closure_init(&lb_client->md_rcvd, md_recv_cb, lb_client);
+  grpc_closure_init(&lb_client->req_sent, req_sent_cb, lb_client);
+  grpc_closure_init(&lb_client->res_rcvd, res_recv_cb, lb_client);
+  grpc_closure_init(&lb_client->close_sent, close_sent_cb, lb_client);
+  grpc_closure_init(&lb_client->srv_status_rcvd, srv_status_rcvd_cb, lb_client);
+
+  /* TODO(dgq): get the deadline from the client config instead of fabricating
+   * one here. */
+  lb_client->deadline = gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC),
+                                     gpr_time_from_seconds(3, GPR_TIMESPAN));
+
+  lb_client->lb_call = grpc_channel_create_pollset_set_call(
+      glb_policy->lb_channel, NULL, GRPC_PROPAGATE_DEFAULTS,
+      glb_policy->base.interested_parties, "/BalanceLoad",
+      NULL, /* FIXME(dgq): which "host" value to use? */
+      lb_client->deadline, NULL);
+
+  grpc_metadata_array_init(&lb_client->initial_metadata_recv);
+  grpc_metadata_array_init(&lb_client->trailing_metadata_recv);
+
+  grpc_grpclb_request *request = grpc_grpclb_request_create(
+      "load.balanced.service.name"); /* FIXME(dgq): get the name of the load
+                                        balanced service from the resolver */
+  gpr_slice request_payload_slice = grpc_grpclb_request_encode(request);
+  lb_client->request_payload =
+      grpc_raw_byte_buffer_create(&request_payload_slice, 1);
+  gpr_slice_unref(request_payload_slice);
+  grpc_grpclb_request_destroy(request);
+
+  lb_client->status_details = NULL;
+  lb_client->status_details_capacity = 0;
+  lb_client->glb_policy = glb_policy;
+  return lb_client;
+}
+
+static void lb_client_data_destroy(lb_client_data *lb_client) {
+  grpc_call_destroy(lb_client->lb_call);
+  grpc_metadata_array_destroy(&lb_client->initial_metadata_recv);
+  grpc_metadata_array_destroy(&lb_client->trailing_metadata_recv);
+
+  grpc_byte_buffer_destroy(lb_client->request_payload);
+
+  gpr_free(lb_client->status_details);
+  gpr_mu_destroy(&lb_client->mu);
+  gpr_free(lb_client);
+}
+static grpc_call *lb_client_data_get_call(lb_client_data *lb_client) {
+  return lb_client->lb_call;
+}
+
+/*
+ * Auxiliary functions and LB client callbacks.
+ */
+static void query_for_backends(grpc_exec_ctx *exec_ctx,
+                               glb_lb_policy *glb_policy) {
+  GPR_ASSERT(glb_policy->lb_channel != NULL);
+
+  glb_policy->lb_client = lb_client_data_create(glb_policy);
+  grpc_call_error call_error;
+  grpc_op ops[1];
+  memset(ops, 0, sizeof(ops));
+  grpc_op *op = ops;
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  op->data.send_initial_metadata.count = 0;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  call_error = grpc_call_start_batch_and_execute(
+      exec_ctx, glb_policy->lb_client->lb_call, ops, (size_t)(op - ops),
+      &glb_policy->lb_client->md_sent);
+  GPR_ASSERT(GRPC_CALL_OK == call_error);
+
+  op = ops;
+  op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
+  op->data.recv_status_on_client.trailing_metadata =
+      &glb_policy->lb_client->trailing_metadata_recv;
+  op->data.recv_status_on_client.status = &glb_policy->lb_client->status;
+  op->data.recv_status_on_client.status_details =
+      &glb_policy->lb_client->status_details;
+  op->data.recv_status_on_client.status_details_capacity =
+      &glb_policy->lb_client->status_details_capacity;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  call_error = grpc_call_start_batch_and_execute(
+      exec_ctx, glb_policy->lb_client->lb_call, ops, (size_t)(op - ops),
+      &glb_policy->lb_client->srv_status_rcvd);
+  GPR_ASSERT(GRPC_CALL_OK == call_error);
+}
+
+static void md_sent_cb(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
+  lb_client_data *lb_client = arg;
+  GPR_ASSERT(lb_client->lb_call);
+  grpc_op ops[1];
+  memset(ops, 0, sizeof(ops));
+  grpc_op *op = ops;
+  op->op = GRPC_OP_RECV_INITIAL_METADATA;
+  op->data.recv_initial_metadata = &lb_client->initial_metadata_recv;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  grpc_call_error call_error = grpc_call_start_batch_and_execute(
+      exec_ctx, lb_client->lb_call, ops, (size_t)(op - ops),
+      &lb_client->md_rcvd);
+  GPR_ASSERT(GRPC_CALL_OK == call_error);
+}
+
+static void md_recv_cb(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
+  lb_client_data *lb_client = arg;
+  GPR_ASSERT(lb_client->lb_call);
+  grpc_op ops[1];
+  memset(ops, 0, sizeof(ops));
+  grpc_op *op = ops;
+
+  op->op = GRPC_OP_SEND_MESSAGE;
+  op->data.send_message = lb_client->request_payload;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  grpc_call_error call_error = grpc_call_start_batch_and_execute(
+      exec_ctx, lb_client->lb_call, ops, (size_t)(op - ops),
+      &lb_client->req_sent);
+  GPR_ASSERT(GRPC_CALL_OK == call_error);
+}
+
+static void req_sent_cb(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
+  lb_client_data *lb_client = arg;
+
+  grpc_op ops[1];
+  memset(ops, 0, sizeof(ops));
+  grpc_op *op = ops;
+
+  op->op = GRPC_OP_RECV_MESSAGE;
+  op->data.recv_message = &lb_client->response_payload;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  grpc_call_error call_error = grpc_call_start_batch_and_execute(
+      exec_ctx, lb_client->lb_call, ops, (size_t)(op - ops),
+      &lb_client->res_rcvd);
+  GPR_ASSERT(GRPC_CALL_OK == call_error);
+}
+
+static void res_recv_cb(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
+  lb_client_data *lb_client = arg;
+  grpc_op ops[2];
+  memset(ops, 0, sizeof(ops));
+  grpc_op *op = ops;
+  if (lb_client->response_payload != NULL) {
+    /* Received data from the LB server. Look inside
+     * lb_client->response_payload, for
+     * a serverlist. */
+    grpc_byte_buffer_reader bbr;
+    grpc_byte_buffer_reader_init(&bbr, lb_client->response_payload);
+    gpr_slice response_slice = grpc_byte_buffer_reader_readall(&bbr);
+    grpc_byte_buffer_destroy(lb_client->response_payload);
+    grpc_grpclb_serverlist *serverlist =
+        grpc_grpclb_response_parse_serverlist(response_slice);
+    if (serverlist != NULL) {
+      gpr_slice_unref(response_slice);
+      if (grpc_lb_glb_trace) {
+        gpr_log(GPR_INFO, "Serverlist with %zu servers received",
+                serverlist->num_servers);
+      }
+
+      /* update serverlist */
+      if (serverlist->num_servers > 0) {
+        if (grpc_grpclb_serverlist_equals(lb_client->glb_policy->serverlist,
+                                          serverlist)) {
+          if (grpc_lb_glb_trace) {
+            gpr_log(GPR_INFO,
+                    "Incoming server list identical to current, ignoring.");
+          }
+        } else { /* new serverlist */
+          if (lb_client->glb_policy->serverlist != NULL) {
+            /* dispose of the old serverlist */
+            grpc_grpclb_destroy_serverlist(lb_client->glb_policy->serverlist);
+          }
+          /* and update the copy in the glb_lb_policy instance */
+          lb_client->glb_policy->serverlist = serverlist;
+        }
+        if (lb_client->glb_policy->rr_policy == NULL) {
+          /* initial "handover", in this case from a null RR policy, meaning
+           * it'll just create the first RR policy instance */
+          rr_handover(exec_ctx, lb_client->glb_policy, error);
+        } else {
+          /* unref the RR policy, eventually leading to its substitution with a
+           * new one constructed from the received serverlist (see
+           * rr_connectivity_changed) */
+          GRPC_LB_POLICY_UNREF(exec_ctx, lb_client->glb_policy->rr_policy,
+                               "serverlist_received");
+        }
+      } else {
+        if (grpc_lb_glb_trace) {
+          gpr_log(GPR_INFO,
+                  "Received empty server list. Picks will stay pending until a "
+                  "response with > 0 servers is received");
+        }
+      }
+
+      /* keep listening for serverlist updates */
+      op->op = GRPC_OP_RECV_MESSAGE;
+      op->data.recv_message = &lb_client->response_payload;
+      op->flags = 0;
+      op->reserved = NULL;
+      op++;
+      const grpc_call_error call_error = grpc_call_start_batch_and_execute(
+          exec_ctx, lb_client->lb_call, ops, (size_t)(op - ops),
+          &lb_client->res_rcvd); /* loop */
+      GPR_ASSERT(GRPC_CALL_OK == call_error);
+      return;
+    }
+
+    GPR_ASSERT(serverlist == NULL);
+    gpr_log(GPR_ERROR, "Invalid LB response received: '%s'",
+            gpr_dump_slice(response_slice, GPR_DUMP_ASCII));
+    gpr_slice_unref(response_slice);
+
+    /* Disconnect from server returning invalid response. */
+    op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
+    op->flags = 0;
+    op->reserved = NULL;
+    op++;
+    grpc_call_error call_error = grpc_call_start_batch_and_execute(
+        exec_ctx, lb_client->lb_call, ops, (size_t)(op - ops),
+        &lb_client->close_sent);
+    GPR_ASSERT(GRPC_CALL_OK == call_error);
+  }
+  /* empty payload: call cancelled by server. Cleanups happening in
+   * srv_status_rcvd_cb */
+}
+
+static void close_sent_cb(grpc_exec_ctx *exec_ctx, void *arg,
+                          grpc_error *error) {
+  if (grpc_lb_glb_trace) {
+    gpr_log(GPR_INFO,
+            "Close from LB client sent. Waiting from server status now");
+  }
+}
+
+static void srv_status_rcvd_cb(grpc_exec_ctx *exec_ctx, void *arg,
+                               grpc_error *error) {
+  lb_client_data *lb_client = arg;
+  if (grpc_lb_glb_trace) {
+    gpr_log(GPR_INFO,
+            "status from lb server received. Status = %d, Details = '%s', "
+            "Capaticy "
+            "= %zu",
+            lb_client->status, lb_client->status_details,
+            lb_client->status_details_capacity);
+  }
+  /* TODO(dgq): deal with stream termination properly (fire up another one? fail
+   * the original call?) */
+}
+
+/* Code wiring the policy with the rest of the core */
+static const grpc_lb_policy_vtable glb_lb_policy_vtable = {
+    glb_destroy,     glb_shutdown,           glb_pick,
+    glb_cancel_pick, glb_cancel_picks,       glb_ping_one,
+    glb_exit_idle,   glb_check_connectivity, glb_notify_on_state_change};
+
+static void glb_factory_ref(grpc_lb_policy_factory *factory) {}
+
+static void glb_factory_unref(grpc_lb_policy_factory *factory) {}
+
+static const grpc_lb_policy_factory_vtable glb_factory_vtable = {
+    glb_factory_ref, glb_factory_unref, glb_create, "grpclb"};
+
+static grpc_lb_policy_factory glb_lb_policy_factory = {&glb_factory_vtable};
+
+grpc_lb_policy_factory *grpc_glb_lb_factory_create() {
+  return &glb_lb_policy_factory;
+}
+
+/* Plugin registration */
+void grpc_lb_policy_grpclb_init() {
+  grpc_register_lb_policy(grpc_glb_lb_factory_create());
+  grpc_register_tracer("glb", &grpc_lb_glb_trace);
+}
+
+void grpc_lb_policy_grpclb_shutdown() {}
diff --git a/src/core/ext/lb_policy/grpclb/grpclb.h b/src/core/ext/lb_policy/grpclb/grpclb.h
new file mode 100644
index 0000000000..83552b4fa0
--- /dev/null
+++ b/src/core/ext/lb_policy/grpclb/grpclb.h
@@ -0,0 +1,44 @@
+/*
+ *
+ * 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.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_LB_POLICY_GRPCLB_GRPCLB_H
+#define GRPC_CORE_EXT_LB_POLICY_GRPCLB_GRPCLB_H
+
+#include "src/core/ext/client_config/lb_policy_factory.h"
+
+/** Returns a load balancing factory for the glb policy, which tries to connect
+ * to a load balancing server to decide the next successfully connected
+ * subchannel to pick. */
+grpc_lb_policy_factory *grpc_glb_lb_factory_create();
+
+#endif /* GRPC_CORE_EXT_LB_POLICY_GRPCLB_GRPCLB_H */
diff --git a/src/core/ext/lb_policy/grpclb/load_balancer_api.c b/src/core/ext/lb_policy/grpclb/load_balancer_api.c
index 59b89997dd..f4720a1345 100644
--- a/src/core/ext/lb_policy/grpclb/load_balancer_api.c
+++ b/src/core/ext/lb_policy/grpclb/load_balancer_api.c
@@ -38,9 +38,15 @@
 #include <grpc/support/alloc.h>
 
 typedef struct decode_serverlist_arg {
-  int first_pass;
-  int i;
+  /* The first pass counts the number of servers in the server list. The second
+   * one allocates and decodes. */
+  bool first_pass;
+  /* The decoding callback is invoked once per server in serverlist. Remember
+   * which index of the serverlist are we currently decoding */
+  size_t decoding_idx;
+  /* Populated after the first pass. Number of server in the input serverlist */
   size_t num_servers;
+  /* The decoded serverlist */
   grpc_grpclb_server **servers;
 } decode_serverlist_arg;
 
@@ -48,23 +54,24 @@ typedef struct decode_serverlist_arg {
 static bool decode_serverlist(pb_istream_t *stream, const pb_field_t *field,
                               void **arg) {
   decode_serverlist_arg *dec_arg = *arg;
-  if (dec_arg->first_pass != 0) { /* first pass */
+  if (dec_arg->first_pass) { /* count how many server do we have */
     grpc_grpclb_server server;
     if (!pb_decode(stream, grpc_lb_v1_Server_fields, &server)) {
       return false;
     }
     dec_arg->num_servers++;
-  } else { /* second pass */
+  } else { /* second pass. Actually decode. */
     grpc_grpclb_server *server = gpr_malloc(sizeof(grpc_grpclb_server));
+    memset(server, 0, sizeof(grpc_grpclb_server));
     GPR_ASSERT(dec_arg->num_servers > 0);
-    if (dec_arg->i == 0) { /* first iteration of second pass */
+    if (dec_arg->decoding_idx == 0) { /* first iteration of second pass */
       dec_arg->servers =
           gpr_malloc(sizeof(grpc_grpclb_server *) * dec_arg->num_servers);
     }
     if (!pb_decode(stream, grpc_lb_v1_Server_fields, server)) {
       return false;
     }
-    dec_arg->servers[dec_arg->i++] = server;
+    dec_arg->servers[dec_arg->decoding_idx++] = server;
   }
 
   return true;
@@ -102,57 +109,59 @@ void grpc_grpclb_request_destroy(grpc_grpclb_request *request) {
   gpr_free(request);
 }
 
-grpc_grpclb_response *grpc_grpclb_response_parse(gpr_slice encoded_response) {
-  bool status;
+typedef grpc_lb_v1_LoadBalanceResponse grpc_grpclb_response;
+grpc_grpclb_initial_response *grpc_grpclb_initial_response_parse(
+    gpr_slice encoded_grpc_grpclb_response) {
   pb_istream_t stream =
-      pb_istream_from_buffer(GPR_SLICE_START_PTR(encoded_response),
-                             GPR_SLICE_LENGTH(encoded_response));
-  grpc_grpclb_response *res = gpr_malloc(sizeof(grpc_grpclb_response));
-  memset(res, 0, sizeof(*res));
-  status = pb_decode(&stream, grpc_lb_v1_LoadBalanceResponse_fields, res);
-  if (!status) {
-    grpc_grpclb_response_destroy(res);
+      pb_istream_from_buffer(GPR_SLICE_START_PTR(encoded_grpc_grpclb_response),
+                             GPR_SLICE_LENGTH(encoded_grpc_grpclb_response));
+  grpc_grpclb_response res;
+  memset(&res, 0, sizeof(grpc_grpclb_response));
+  if (!pb_decode(&stream, grpc_lb_v1_LoadBalanceResponse_fields, &res)) {
     return NULL;
   }
-  return res;
+  grpc_grpclb_initial_response *initial_res =
+      gpr_malloc(sizeof(grpc_grpclb_initial_response));
+  memcpy(initial_res, &res.initial_response,
+         sizeof(grpc_grpclb_initial_response));
+
+  return initial_res;
 }
 
 grpc_grpclb_serverlist *grpc_grpclb_response_parse_serverlist(
-    gpr_slice encoded_response) {
+    gpr_slice encoded_grpc_grpclb_response) {
   bool status;
   decode_serverlist_arg arg;
   pb_istream_t stream =
-      pb_istream_from_buffer(GPR_SLICE_START_PTR(encoded_response),
-                             GPR_SLICE_LENGTH(encoded_response));
+      pb_istream_from_buffer(GPR_SLICE_START_PTR(encoded_grpc_grpclb_response),
+                             GPR_SLICE_LENGTH(encoded_grpc_grpclb_response));
   pb_istream_t stream_at_start = stream;
-  grpc_grpclb_response *res = gpr_malloc(sizeof(grpc_grpclb_response));
-  memset(res, 0, sizeof(*res));
+  grpc_grpclb_response res;
+  memset(&res, 0, sizeof(grpc_grpclb_response));
   memset(&arg, 0, sizeof(decode_serverlist_arg));
 
-  res->server_list.servers.funcs.decode = decode_serverlist;
-  res->server_list.servers.arg = &arg;
-  arg.first_pass = 1;
-  status = pb_decode(&stream, grpc_lb_v1_LoadBalanceResponse_fields, res);
+  res.server_list.servers.funcs.decode = decode_serverlist;
+  res.server_list.servers.arg = &arg;
+  arg.first_pass = true;
+  status = pb_decode(&stream, grpc_lb_v1_LoadBalanceResponse_fields, &res);
   if (!status) {
-    grpc_grpclb_response_destroy(res);
     return NULL;
   }
 
-  arg.first_pass = 0;
+  arg.first_pass = false;
   status =
-      pb_decode(&stream_at_start, grpc_lb_v1_LoadBalanceResponse_fields, res);
+      pb_decode(&stream_at_start, grpc_lb_v1_LoadBalanceResponse_fields, &res);
   if (!status) {
-    grpc_grpclb_response_destroy(res);
     return NULL;
   }
 
   grpc_grpclb_serverlist *sl = gpr_malloc(sizeof(grpc_grpclb_serverlist));
+  memset(sl, 0, sizeof(*sl));
   sl->num_servers = arg.num_servers;
   sl->servers = arg.servers;
-  if (res->server_list.has_expiration_interval) {
-    sl->expiration_interval = res->server_list.expiration_interval;
+  if (res.server_list.has_expiration_interval) {
+    sl->expiration_interval = res.server_list.expiration_interval;
   }
-  grpc_grpclb_response_destroy(res);
   return sl;
 }
 
@@ -167,6 +176,72 @@ void grpc_grpclb_destroy_serverlist(grpc_grpclb_serverlist *serverlist) {
   gpr_free(serverlist);
 }
 
-void grpc_grpclb_response_destroy(grpc_grpclb_response *response) {
+grpc_grpclb_serverlist *grpc_grpclb_serverlist_copy(
+    const grpc_grpclb_serverlist *sl) {
+  grpc_grpclb_serverlist *copy = gpr_malloc(sizeof(grpc_grpclb_serverlist));
+  memset(copy, 0, sizeof(grpc_grpclb_serverlist));
+  copy->num_servers = sl->num_servers;
+  memcpy(&copy->expiration_interval, &sl->expiration_interval,
+         sizeof(grpc_grpclb_duration));
+  copy->servers = gpr_malloc(sizeof(grpc_grpclb_server *) * sl->num_servers);
+  for (size_t i = 0; i < sl->num_servers; i++) {
+    copy->servers[i] = gpr_malloc(sizeof(grpc_grpclb_server));
+    memcpy(copy->servers[i], sl->servers[i], sizeof(grpc_grpclb_server));
+  }
+  return copy;
+}
+
+bool grpc_grpclb_serverlist_equals(const grpc_grpclb_serverlist *lhs,
+                                   const grpc_grpclb_serverlist *rhs) {
+  if ((lhs == NULL) || (rhs == NULL)) {
+    return false;
+  }
+  if (lhs->num_servers != rhs->num_servers) {
+    return false;
+  }
+  if (grpc_grpclb_duration_compare(&lhs->expiration_interval,
+                                   &rhs->expiration_interval) != 0) {
+    return false;
+  }
+  for (size_t i = 0; i < lhs->num_servers; i++) {
+    if (!grpc_grpclb_server_equals(lhs->servers[i], rhs->servers[i])) {
+      return false;
+    }
+  }
+  return true;
+}
+
+bool grpc_grpclb_server_equals(const grpc_grpclb_server *lhs,
+                               const grpc_grpclb_server *rhs) {
+  return memcmp(lhs, rhs, sizeof(grpc_grpclb_server)) == 0;
+}
+
+int grpc_grpclb_duration_compare(const grpc_grpclb_duration *lhs,
+                                 const grpc_grpclb_duration *rhs) {
+  GPR_ASSERT(lhs && rhs);
+  if (lhs->has_seconds && rhs->has_seconds) {
+    if (lhs->seconds < rhs->seconds) return -1;
+    if (lhs->seconds > rhs->seconds) return 1;
+  } else if (lhs->has_seconds) {
+    return 1;
+  } else if (rhs->has_seconds) {
+    return -1;
+  }
+
+  GPR_ASSERT(lhs->seconds == rhs->seconds);
+  if (lhs->has_nanos && rhs->has_nanos) {
+    if (lhs->nanos < rhs->nanos) return -1;
+    if (lhs->nanos > rhs->nanos) return 1;
+  } else if (lhs->has_nanos) {
+    return 1;
+  } else if (rhs->has_nanos) {
+    return -1;
+  }
+
+  return 0;
+}
+
+void grpc_grpclb_initial_response_destroy(
+    grpc_grpclb_initial_response *response) {
   gpr_free(response);
 }
diff --git a/src/core/ext/lb_policy/grpclb/load_balancer_api.h b/src/core/ext/lb_policy/grpclb/load_balancer_api.h
index 71b5616d0c..9726c87a37 100644
--- a/src/core/ext/lb_policy/grpclb/load_balancer_api.h
+++ b/src/core/ext/lb_policy/grpclb/load_balancer_api.h
@@ -46,7 +46,7 @@ extern "C" {
 #define GRPC_GRPCLB_SERVICE_NAME_MAX_LENGTH 128
 
 typedef grpc_lb_v1_LoadBalanceRequest grpc_grpclb_request;
-typedef grpc_lb_v1_LoadBalanceResponse grpc_grpclb_response;
+typedef grpc_lb_v1_InitialLoadBalanceResponse grpc_grpclb_initial_response;
 typedef grpc_lb_v1_Server grpc_grpclb_server;
 typedef grpc_lb_v1_Duration grpc_grpclb_duration;
 typedef struct grpc_grpclb_serverlist {
@@ -64,19 +64,37 @@ gpr_slice grpc_grpclb_request_encode(const grpc_grpclb_request *request);
 /** Destroy \a request */
 void grpc_grpclb_request_destroy(grpc_grpclb_request *request);
 
-/** Parse (ie, decode) the bytes in \a encoded_response as a \a
- * grpc_grpclb_response */
-grpc_grpclb_response *grpc_grpclb_response_parse(gpr_slice encoded_response);
+/** Parse (ie, decode) the bytes in \a encoded_grpc_grpclb_response as a \a
+ * grpc_grpclb_initial_response */
+grpc_grpclb_initial_response *grpc_grpclb_initial_response_parse(
+    gpr_slice encoded_grpc_grpclb_response);
+
+/** Parse the list of servers from an encoded \a grpc_grpclb_response */
+grpc_grpclb_serverlist *grpc_grpclb_response_parse_serverlist(
+    gpr_slice encoded_grpc_grpclb_response);
+
+/** Return a copy of \a sl. The caller is responsible for calling \a
+ * grpc_grpclb_destroy_serverlist on the returned copy. */
+grpc_grpclb_serverlist *grpc_grpclb_serverlist_copy(
+    const grpc_grpclb_serverlist *sl);
+
+bool grpc_grpclb_serverlist_equals(const grpc_grpclb_serverlist *lhs,
+                                   const grpc_grpclb_serverlist *rhs);
+
+bool grpc_grpclb_server_equals(const grpc_grpclb_server *lhs,
+                               const grpc_grpclb_server *rhs);
 
 /** Destroy \a serverlist */
 void grpc_grpclb_destroy_serverlist(grpc_grpclb_serverlist *serverlist);
 
-/** Parse the list of servers from an encoded \a grpc_grpclb_response */
-grpc_grpclb_serverlist *grpc_grpclb_response_parse_serverlist(
-    gpr_slice encoded_response);
+/** Compare \a lhs against \a rhs and return 0 if \a lhs and \a rhs are equal,
+ * < 0 if \a lhs represents a duration shorter than \a rhs and > 0 otherwise */
+int grpc_grpclb_duration_compare(const grpc_grpclb_duration *lhs,
+                                 const grpc_grpclb_duration *rhs);
 
-/** Destroy \a response */
-void grpc_grpclb_response_destroy(grpc_grpclb_response *response);
+/** Destroy \a initial_response */
+void grpc_grpclb_initial_response_destroy(
+    grpc_grpclb_initial_response *response);
 
 #ifdef __cplusplus
 }
diff --git a/src/core/ext/load_reporting/load_reporting.c b/src/core/ext/load_reporting/load_reporting.c
index 9e4d32676f..df1ea0ec9a 100644
--- a/src/core/ext/load_reporting/load_reporting.c
+++ b/src/core/ext/load_reporting/load_reporting.c
@@ -42,42 +42,12 @@
 #include "src/core/lib/channel/channel_stack_builder.h"
 #include "src/core/lib/surface/channel_init.h"
 
-struct grpc_load_reporting_config {
-  grpc_load_reporting_fn fn;
-  void *user_data;
-};
-
-grpc_load_reporting_config *grpc_load_reporting_config_create(
-    grpc_load_reporting_fn fn, void *user_data) {
-  GPR_ASSERT(fn != NULL);
-  grpc_load_reporting_config *lrc =
-      gpr_malloc(sizeof(grpc_load_reporting_config));
-  lrc->fn = fn;
-  lrc->user_data = user_data;
-  return lrc;
-}
-
-grpc_load_reporting_config *grpc_load_reporting_config_copy(
-    grpc_load_reporting_config *src) {
-  return grpc_load_reporting_config_create(src->fn, src->user_data);
-}
-
-void grpc_load_reporting_config_destroy(grpc_load_reporting_config *lrc) {
-  gpr_free(lrc);
-}
-
-void grpc_load_reporting_config_call(
-    grpc_load_reporting_config *lrc,
-    const grpc_load_reporting_call_data *call_data) {
-  lrc->fn(call_data, lrc->user_data);
-}
-
 static bool is_load_reporting_enabled(const grpc_channel_args *a) {
   if (a == NULL) return false;
   for (size_t i = 0; i < a->num_args; i++) {
     if (0 == strcmp(a->args[i].key, GRPC_ARG_ENABLE_LOAD_REPORTING)) {
-      return a->args[i].type == GRPC_ARG_POINTER &&
-             a->args[i].value.pointer.p != NULL;
+      return a->args[i].type == GRPC_ARG_INTEGER &&
+             a->args[i].value.integer != 0;
     }
   }
   return false;
@@ -94,37 +64,17 @@ static bool maybe_add_load_reporting_filter(grpc_channel_stack_builder *builder,
   return true;
 }
 
-static void lrd_arg_destroy(void *p) { grpc_load_reporting_config_destroy(p); }
-
-static void *lrd_arg_copy(void *p) {
-  return grpc_load_reporting_config_copy(p);
-}
-
-static int lrd_arg_cmp(void *a, void *b) {
-  grpc_load_reporting_config *lhs = a;
-  grpc_load_reporting_config *rhs = b;
-  return !(lhs->fn == rhs->fn && lhs->user_data == rhs->user_data);
-}
-
-static const grpc_arg_pointer_vtable lrd_ptr_vtable = {
-    lrd_arg_copy, lrd_arg_destroy, lrd_arg_cmp};
-
-grpc_arg grpc_load_reporting_config_create_arg(
-    grpc_load_reporting_config *lrc) {
+grpc_arg grpc_load_reporting_enable_arg() {
   grpc_arg arg;
-  arg.type = GRPC_ARG_POINTER;
+  arg.type = GRPC_ARG_INTEGER;
   arg.key = GRPC_ARG_ENABLE_LOAD_REPORTING;
-  arg.value.pointer.p = lrc;
-  arg.value.pointer.vtable = &lrd_ptr_vtable;
+  arg.value.integer = 1;
   return arg;
 }
 
 /* Plugin registration */
 
 void grpc_load_reporting_plugin_init(void) {
-  grpc_channel_init_register_stage(GRPC_CLIENT_CHANNEL, INT_MAX,
-                                   maybe_add_load_reporting_filter,
-                                   (void *)&grpc_load_reporting_filter);
   grpc_channel_init_register_stage(GRPC_SERVER_CHANNEL, INT_MAX,
                                    maybe_add_load_reporting_filter,
                                    (void *)&grpc_load_reporting_filter);
diff --git a/src/core/ext/load_reporting/load_reporting.h b/src/core/ext/load_reporting/load_reporting.h
index 316cd89bd7..e37817d8c2 100644
--- a/src/core/ext/load_reporting/load_reporting.h
+++ b/src/core/ext/load_reporting/load_reporting.h
@@ -34,42 +34,47 @@
 #ifndef GRPC_CORE_EXT_LOAD_REPORTING_LOAD_REPORTING_H
 #define GRPC_CORE_EXT_LOAD_REPORTING_LOAD_REPORTING_H
 
-#include "src/core/lib/iomgr/closure.h"
-#include "src/core/lib/surface/call.h"
+#include <grpc/impl/codegen/grpc_types.h>
+#include "src/core/lib/channel/channel_stack.h"
 
-typedef struct grpc_load_reporting_config grpc_load_reporting_config;
+/** Metadata key for initial metadata coming from clients */
+/* TODO(dgq): change to the final value TBD */
+#define GRPC_LOAD_REPORTING_INITIAL_MD_KEY "load-reporting-initial"
 
-/** Call information to be passed to the provided load reporting function upon
- * completion of the call */
-typedef struct grpc_load_reporting_call_data {
-  const grpc_call_stats *stats;   /**< Stats for the call */
-  const char *trailing_md_string; /**< LR trailing metadata info */
-} grpc_load_reporting_call_data;
+/** Metadata key for trailing metadata from servers */
+/* TODO(dgq): change to the final value TBD */
+#define GRPC_LOAD_REPORTING_TRAILING_MD_KEY "load-reporting-trailing"
 
-/** Custom function to be called by the load reporting filter. */
-typedef void (*grpc_load_reporting_fn)(
-    const grpc_load_reporting_call_data *call_data, void *user_data);
+/** Identifiers for the invocation point of the users LR callback */
+typedef enum grpc_load_reporting_source {
+  GRPC_LR_POINT_UNKNOWN = 0,
+  GRPC_LR_POINT_CHANNEL_CREATION,
+  GRPC_LR_POINT_CHANNEL_DESTRUCTION,
+  GRPC_LR_POINT_CALL_CREATION,
+  GRPC_LR_POINT_CALL_DESTRUCTION
+} grpc_load_reporting_source;
 
-/** Register \a fn as the function to be invoked by the load reporting filter.
- * \a fn will be invoked at the beginning and at the end of the call.
- *
- * For the first invocation, \a fn's first argument
- * (grpc_load_reporting_call_data*) will be NULL. \a user_data is always passed
- * as-is. */
-grpc_load_reporting_config *grpc_load_reporting_config_create(
-    grpc_load_reporting_fn fn, void *user_data);
+/** Call information to be passed to the provided LR callback. */
+typedef struct grpc_load_reporting_call_data {
+  const grpc_load_reporting_source source; /**< point of last data update. */
+
+  /** Unique identifier for the channel associated with the data */
+  intptr_t channel_id;
 
-grpc_load_reporting_config *grpc_load_reporting_config_copy(
-    grpc_load_reporting_config *src);
+  /** Unique identifier for the call associated with the data. If the call
+   * hasn't been created yet, it'll have a value of zero. */
+  intptr_t call_id;
 
-void grpc_load_reporting_config_destroy(grpc_load_reporting_config *lrc);
+  /** Only valid when \a source is \a GRPC_LR_POINT_CALL_DESTRUCTION, that is,
+   * once the call has completed */
+  const grpc_call_final_info *final_info;
 
-/** Invoke the function registered by \a grpc_load_reporting_init. */
-void grpc_load_reporting_config_call(
-    grpc_load_reporting_config *lrc,
-    const grpc_load_reporting_call_data *call_data);
+  const char *initial_md_string;  /**< value string for LR's initial md key */
+  const char *trailing_md_string; /**< value string for LR's trailing md key */
+  const char *method_name;        /**< Corresponds to :path header */
+} grpc_load_reporting_call_data;
 
 /** Return a \a grpc_arg enabling load reporting */
-grpc_arg grpc_load_reporting_config_create_arg(grpc_load_reporting_config *lrc);
+grpc_arg grpc_load_reporting_enable_arg();
 
 #endif /* GRPC_CORE_EXT_LOAD_REPORTING_LOAD_REPORTING_H */
diff --git a/src/core/ext/load_reporting/load_reporting_filter.c b/src/core/ext/load_reporting/load_reporting_filter.c
index f372f88c3a..99b560ae27 100644
--- a/src/core/ext/load_reporting/load_reporting_filter.c
+++ b/src/core/ext/load_reporting/load_reporting_filter.c
@@ -31,6 +31,7 @@
  *
  */
 
+#include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
 #include <grpc/support/sync.h>
@@ -42,17 +43,67 @@
 #include "src/core/lib/profiling/timers.h"
 #include "src/core/lib/transport/static_metadata.h"
 
-typedef struct call_data { const char *trailing_md_string; } call_data;
+typedef struct call_data {
+  intptr_t id; /**< an id unique to the call */
+  char *trailing_md_string;
+  char *initial_md_string;
+  const char *service_method;
+
+  /* stores the recv_initial_metadata op's ready closure, which we wrap with our
+   * own (on_initial_md_ready) in order to capture the incoming initial metadata
+   * */
+  grpc_closure *ops_recv_initial_metadata_ready;
+
+  /* to get notified of the availability of the incoming initial metadata. */
+  grpc_closure on_initial_md_ready;
+  grpc_metadata_batch *recv_initial_metadata;
+} call_data;
+
 typedef struct channel_data {
-  gpr_mu mu;
-  grpc_load_reporting_config *lrc;
+  intptr_t id; /**< an id unique to the channel */
 } channel_data;
 
-static void invoke_lr_fn_locked(grpc_load_reporting_config *lrc,
-                                grpc_load_reporting_call_data *lr_call_data) {
-  GPR_TIMER_BEGIN("load_reporting_config_fn", 0);
-  grpc_load_reporting_config_call(lrc, lr_call_data);
-  GPR_TIMER_END("load_reporting_config_fn", 0);
+typedef struct {
+  grpc_call_element *elem;
+  grpc_exec_ctx *exec_ctx;
+} recv_md_filter_args;
+
+static grpc_mdelem *recv_md_filter(void *user_data, grpc_mdelem *md) {
+  recv_md_filter_args *a = user_data;
+  grpc_call_element *elem = a->elem;
+  call_data *calld = elem->call_data;
+
+  if (md->key == GRPC_MDSTR_PATH) {
+    calld->service_method = grpc_mdstr_as_c_string(md->value);
+  } else if (md->key == GRPC_MDSTR_LOAD_REPORTING_INITIAL) {
+    calld->initial_md_string = gpr_strdup(grpc_mdstr_as_c_string(md->value));
+    return NULL;
+  }
+
+  return md;
+}
+
+static void on_initial_md_ready(grpc_exec_ctx *exec_ctx, void *user_data,
+                                grpc_error *err) {
+  grpc_call_element *elem = user_data;
+  call_data *calld = elem->call_data;
+
+  if (err == GRPC_ERROR_NONE) {
+    recv_md_filter_args a;
+    a.elem = elem;
+    a.exec_ctx = exec_ctx;
+    grpc_metadata_batch_filter(calld->recv_initial_metadata, recv_md_filter,
+                               &a);
+    if (calld->service_method == NULL) {
+      err =
+          grpc_error_add_child(err, GRPC_ERROR_CREATE("Missing :path header"));
+    }
+  } else {
+    GRPC_ERROR_REF(err);
+  }
+  calld->ops_recv_initial_metadata_ready->cb(
+      exec_ctx, calld->ops_recv_initial_metadata_ready->cb_arg, err);
+  GRPC_ERROR_UNREF(err);
 }
 
 /* Constructor for call_data */
@@ -60,20 +111,41 @@ static void init_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
                            grpc_call_element_args *args) {
   call_data *calld = elem->call_data;
   memset(calld, 0, sizeof(call_data));
+
+  calld->id = (intptr_t)args->call_stack;
+  grpc_closure_init(&calld->on_initial_md_ready, on_initial_md_ready, elem);
+
+  /* TODO(dgq): do something with the data
+  channel_data *chand = elem->channel_data;
+  grpc_load_reporting_call_data lr_call_data = {GRPC_LR_POINT_CALL_CREATION,
+                                                (intptr_t)chand->id,
+                                                (intptr_t)calld->id,
+                                                NULL,
+                                                NULL,
+                                                NULL,
+                                                NULL};
+  */
 }
 
 /* Destructor for call_data */
 static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
-                              const grpc_call_stats *stats, void *ignored) {
-  channel_data *chand = elem->channel_data;
+                              const grpc_call_final_info *final_info,
+                              void *ignored) {
   call_data *calld = elem->call_data;
 
-  grpc_load_reporting_call_data lr_call_data = {stats,
-                                                calld->trailing_md_string};
-
-  gpr_mu_lock(&chand->mu);
-  invoke_lr_fn_locked(chand->lrc, &lr_call_data);
-  gpr_mu_unlock(&chand->mu);
+  /* TODO(dgq): do something with the data
+  channel_data *chand = elem->channel_data;
+  grpc_load_reporting_call_data lr_call_data = {GRPC_LR_POINT_CALL_DESTRUCTION,
+                                                (intptr_t)chand->id,
+                                                (intptr_t)calld->id,
+                                                final_info,
+                                                calld->initial_md_string,
+                                                calld->trailing_md_string,
+                                                calld->service_method};
+  */
+
+  gpr_free(calld->initial_md_string);
+  gpr_free(calld->trailing_md_string);
 }
 
 /* Constructor for channel_data */
@@ -85,37 +157,40 @@ static void init_channel_elem(grpc_exec_ctx *exec_ctx,
   channel_data *chand = elem->channel_data;
   memset(chand, 0, sizeof(channel_data));
 
-  gpr_mu_init(&chand->mu);
-  for (size_t i = 0; i < args->channel_args->num_args; i++) {
-    if (0 == strcmp(args->channel_args->args[i].key,
-                    GRPC_ARG_ENABLE_LOAD_REPORTING)) {
-      grpc_load_reporting_config *arg_lrc =
-          args->channel_args->args[i].value.pointer.p;
-      chand->lrc = grpc_load_reporting_config_copy(arg_lrc);
-      GPR_ASSERT(chand->lrc != NULL);
-      break;
-    }
-  }
-  GPR_ASSERT(chand->lrc != NULL); /* arg actually found */
-
-  gpr_mu_lock(&chand->mu);
-  invoke_lr_fn_locked(chand->lrc, NULL);
-  gpr_mu_unlock(&chand->mu);
+  chand->id = (intptr_t)args->channel_stack;
+
+  /* TODO(dgq): do something with the data
+  grpc_load_reporting_call_data lr_call_data = {GRPC_LR_POINT_CHANNEL_CREATION,
+                                                (intptr_t)chand,
+                                                0,
+                                                NULL,
+                                                NULL,
+                                                NULL,
+                                                NULL};
+                                                */
 }
 
 /* Destructor for channel data */
 static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
                                  grpc_channel_element *elem) {
+  /* TODO(dgq): do something with the data
   channel_data *chand = elem->channel_data;
-  gpr_mu_destroy(&chand->mu);
-  grpc_load_reporting_config_destroy(chand->lrc);
+  grpc_load_reporting_call_data lr_call_data = {
+      GRPC_LR_POINT_CHANNEL_DESTRUCTION,
+      (intptr_t)chand->id,
+      0,
+      NULL,
+      NULL,
+      NULL,
+      NULL};
+  */
 }
 
 static grpc_mdelem *lr_trailing_md_filter(void *user_data, grpc_mdelem *md) {
   grpc_call_element *elem = user_data;
   call_data *calld = elem->call_data;
 
-  if (md->key == GRPC_MDSTR_LOAD_REPORTING) {
+  if (md->key == GRPC_MDSTR_LOAD_REPORTING_TRAILING) {
     calld->trailing_md_string = gpr_strdup(grpc_mdstr_as_c_string(md->value));
     return NULL;
   }
@@ -127,8 +202,14 @@ static void lr_start_transport_stream_op(grpc_exec_ctx *exec_ctx,
                                          grpc_call_element *elem,
                                          grpc_transport_stream_op *op) {
   GPR_TIMER_BEGIN("lr_start_transport_stream_op", 0);
+  call_data *calld = elem->call_data;
 
-  if (op->send_trailing_metadata) {
+  if (op->recv_initial_metadata) {
+    calld->recv_initial_metadata = op->recv_initial_metadata;
+    /* substitute our callback for the higher callback */
+    calld->ops_recv_initial_metadata_ready = op->recv_initial_metadata_ready;
+    op->recv_initial_metadata_ready = &calld->on_initial_md_ready;
+  } else if (op->send_trailing_metadata) {
     grpc_metadata_batch_filter(op->send_trailing_metadata,
                                lr_trailing_md_filter, elem);
   }
diff --git a/src/core/ext/load_reporting/load_reporting_filter.h b/src/core/ext/load_reporting/load_reporting_filter.h
index f69cd6fdc6..160ed32af9 100644
--- a/src/core/ext/load_reporting/load_reporting_filter.h
+++ b/src/core/ext/load_reporting/load_reporting_filter.h
@@ -34,6 +34,7 @@
 #ifndef GRPC_CORE_EXT_LOAD_REPORTING_LOAD_REPORTING_FILTER_H
 #define GRPC_CORE_EXT_LOAD_REPORTING_LOAD_REPORTING_FILTER_H
 
+#include "src/core/ext/load_reporting/load_reporting.h"
 #include "src/core/lib/channel/channel_stack.h"
 
 extern const grpc_channel_filter grpc_load_reporting_filter;
diff --git a/src/core/ext/transport/chttp2/transport/writing.c b/src/core/ext/transport/chttp2/transport/writing.c
index e0d87725e9..8f7a1f55c6 100644
--- a/src/core/ext/transport/chttp2/transport/writing.c
+++ b/src/core/ext/transport/chttp2/transport/writing.c
@@ -202,6 +202,7 @@ static void finalize_outbuf(grpc_exec_ctx *exec_ctx,
 
   GPR_TIMER_BEGIN("finalize_outbuf", 0);
 
+  bool is_first_data_frame = true;
   while (
       grpc_chttp2_list_pop_writing_stream(transport_writing, &stream_writing)) {
     uint32_t max_outgoing =
@@ -266,6 +267,11 @@ static void finalize_outbuf(grpc_exec_ctx *exec_ctx,
             stream_writing->id, &stream_writing->flow_controlled_buffer,
             send_bytes, is_last_frame, &stream_writing->stats,
             &transport_writing->outbuf);
+        if (is_first_data_frame) {
+          /* TODO(dgq): this is a hack. It'll be fix in a future refactoring */
+          stream_writing->stats.data_bytes -= 5; /* discount grpc framing */
+          is_first_data_frame = false;
+        }
         GRPC_CHTTP2_FLOW_DEBIT_STREAM("write", transport_writing,
                                       stream_writing, outgoing_window,
                                       send_bytes);
diff --git a/src/core/lib/channel/channel_stack.c b/src/core/lib/channel/channel_stack.c
index 87175d7943..f9b7347b89 100644
--- a/src/core/lib/channel/channel_stack.c
+++ b/src/core/lib/channel/channel_stack.c
@@ -217,7 +217,7 @@ void grpc_call_stack_ignore_set_pollset_or_pollset_set(
     grpc_polling_entity *pollent) {}
 
 void grpc_call_stack_destroy(grpc_exec_ctx *exec_ctx, grpc_call_stack *stack,
-                             const grpc_call_stats *call_stats,
+                             const grpc_call_final_info *final_info,
                              void *and_free_memory) {
   grpc_call_element *elems = CALL_ELEMS_FROM_STACK(stack);
   size_t count = stack->count;
@@ -225,7 +225,7 @@ void grpc_call_stack_destroy(grpc_exec_ctx *exec_ctx, grpc_call_stack *stack,
 
   /* destroy per-filter data */
   for (i = 0; i < count; i++) {
-    elems[i].filter->destroy_call_elem(exec_ctx, &elems[i], call_stats,
+    elems[i].filter->destroy_call_elem(exec_ctx, &elems[i], final_info,
                                        i == count - 1 ? and_free_memory : NULL);
   }
 }
diff --git a/src/core/lib/channel/channel_stack.h b/src/core/lib/channel/channel_stack.h
index d72c015b67..19d18ccf93 100644
--- a/src/core/lib/channel/channel_stack.h
+++ b/src/core/lib/channel/channel_stack.h
@@ -75,9 +75,14 @@ typedef struct {
 typedef struct {
   grpc_transport_stream_stats transport_stream_stats;
   gpr_timespec latency; /* From call creating to enqueing of received status */
-  grpc_status_code final_status;
 } grpc_call_stats;
 
+/** Information about the call upon completion. */
+typedef struct {
+  grpc_call_stats stats;
+  grpc_status_code final_status;
+} grpc_call_final_info;
+
 /* Channel filters specify:
    1. the amount of memory needed in the channel & call (via the sizeof_XXX
       members)
@@ -119,16 +124,17 @@ typedef struct {
      The filter does not need to do any chaining.
      The bottom filter of a stack will be passed a non-NULL pointer to
      \a and_free_memory that should be passed to gpr_free when destruction
-     is complete. */
+     is complete. \a final_info contains data about the completed call, mainly
+     for reporting purposes. */
   void (*destroy_call_elem)(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
-                            const grpc_call_stats *stats,
+                            const grpc_call_final_info *final_info,
                             void *and_free_memory);
 
   /* sizeof(per channel data) */
   size_t sizeof_channel_data;
   /* Initialize per-channel data.
-     elem is initialized at the start of the call, and elem->channel_data is
-     what needs initializing.
+     elem is initialized at the creating of the channel, and elem->channel_data
+     is what needs initializing.
      is_first, is_last designate this elements position in the stack, and are
      useful for asserting correct configuration by upper layer code.
      The filter does not need to do any chaining */
@@ -243,7 +249,7 @@ void grpc_call_stack_set_pollset_or_pollset_set(grpc_exec_ctx *exec_ctx,
 
 /* Destroy a call stack */
 void grpc_call_stack_destroy(grpc_exec_ctx *exec_ctx, grpc_call_stack *stack,
-                             const grpc_call_stats *call_stats,
+                             const grpc_call_final_info *final_info,
                              void *and_free_memory);
 
 /* Ignore set pollset{_set} - used by filters if they don't care about pollsets
diff --git a/src/core/lib/channel/compress_filter.c b/src/core/lib/channel/compress_filter.c
index 32ebe53ee6..af21ed794d 100644
--- a/src/core/lib/channel/compress_filter.c
+++ b/src/core/lib/channel/compress_filter.c
@@ -270,7 +270,8 @@ static void init_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
 
 /* Destructor for call_data */
 static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
-                              const grpc_call_stats *stats, void *ignored) {
+                              const grpc_call_final_info *final_info,
+                              void *ignored) {
   /* grab pointers to our data from the call element */
   call_data *calld = elem->call_data;
   gpr_slice_buffer_destroy(&calld->slices);
diff --git a/src/core/lib/channel/connected_channel.c b/src/core/lib/channel/connected_channel.c
index 0a7d27a1dc..73714369cd 100644
--- a/src/core/lib/channel/connected_channel.c
+++ b/src/core/lib/channel/connected_channel.c
@@ -104,7 +104,7 @@ static void set_pollset_or_pollset_set(grpc_exec_ctx *exec_ctx,
 
 /* Destructor for call_data */
 static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
-                              const grpc_call_stats *stats,
+                              const grpc_call_final_info *final_info,
                               void *and_free_memory) {
   call_data *calld = elem->call_data;
   channel_data *chand = elem->channel_data;
diff --git a/src/core/lib/channel/http_client_filter.c b/src/core/lib/channel/http_client_filter.c
index 8057e251f0..f1ed22c0ad 100644
--- a/src/core/lib/channel/http_client_filter.c
+++ b/src/core/lib/channel/http_client_filter.c
@@ -184,7 +184,8 @@ static void init_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
 
 /* Destructor for call_data */
 static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
-                              const grpc_call_stats *stats, void *ignored) {}
+                              const grpc_call_final_info *final_info,
+                              void *ignored) {}
 
 static grpc_mdelem *scheme_from_args(const grpc_channel_args *args) {
   unsigned i;
diff --git a/src/core/lib/channel/http_server_filter.c b/src/core/lib/channel/http_server_filter.c
index d0beebd817..d52cc7d018 100644
--- a/src/core/lib/channel/http_server_filter.c
+++ b/src/core/lib/channel/http_server_filter.c
@@ -235,7 +235,8 @@ static void init_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
 
 /* Destructor for call_data */
 static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
-                              const grpc_call_stats *stats, void *ignored) {}
+                              const grpc_call_final_info *final_info,
+                              void *ignored) {}
 
 /* Constructor for channel_data */
 static void init_channel_elem(grpc_exec_ctx *exec_ctx,
diff --git a/src/core/lib/iomgr/tcp_posix.c b/src/core/lib/iomgr/tcp_posix.c
index ec21e03944..974d5ae479 100644
--- a/src/core/lib/iomgr/tcp_posix.c
+++ b/src/core/lib/iomgr/tcp_posix.c
@@ -284,7 +284,7 @@ static void tcp_read(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
 }
 
 /* returns true if done, false if pending; if returning true, *error is set */
-#define MAX_WRITE_IOVEC 1024
+#define MAX_WRITE_IOVEC 1000
 static bool tcp_flush(grpc_tcp *tcp, grpc_error **error) {
   struct msghdr msg;
   struct iovec iov[MAX_WRITE_IOVEC];
diff --git a/src/core/lib/security/transport/client_auth_filter.c b/src/core/lib/security/transport/client_auth_filter.c
index ed7929aa27..382d30756a 100644
--- a/src/core/lib/security/transport/client_auth_filter.c
+++ b/src/core/lib/security/transport/client_auth_filter.c
@@ -282,7 +282,8 @@ static void set_pollset_or_pollset_set(grpc_exec_ctx *exec_ctx,
 
 /* Destructor for call_data */
 static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
-                              const grpc_call_stats *stats, void *ignored) {
+                              const grpc_call_final_info *final_info,
+                              void *ignored) {
   call_data *calld = elem->call_data;
   grpc_call_credentials_unref(calld->creds);
   if (calld->host != NULL) {
diff --git a/src/core/lib/security/transport/server_auth_filter.c b/src/core/lib/security/transport/server_auth_filter.c
index 12e789bde9..5f3d0dcd6e 100644
--- a/src/core/lib/security/transport/server_auth_filter.c
+++ b/src/core/lib/security/transport/server_auth_filter.c
@@ -226,7 +226,8 @@ static void init_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
 
 /* Destructor for call_data */
 static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
-                              const grpc_call_stats *stats, void *ignored) {}
+                              const grpc_call_final_info *final_info,
+                              void *ignored) {}
 
 /* Constructor for channel_data */
 static void init_channel_elem(grpc_exec_ctx *exec_ctx,
diff --git a/src/core/lib/surface/call.c b/src/core/lib/surface/call.c
index fc9df76dc1..70c94791f8 100644
--- a/src/core/lib/surface/call.c
+++ b/src/core/lib/surface/call.c
@@ -154,8 +154,9 @@ struct grpc_call {
   /* Received call statuses from various sources */
   received_status status[STATUS_SOURCE_COUNT];
 
-  /* Call stats: only valid after trailing metadata received */
-  grpc_call_stats stats;
+  /* Call data useful used for reporting. Only valid after the call has
+   * completed */
+  grpc_call_final_info final_info;
 
   /* Compression algorithm for *incoming* data */
   grpc_compression_algorithm incoming_compression_algorithm;
@@ -361,6 +362,25 @@ void grpc_call_internal_unref(grpc_exec_ctx *exec_ctx, grpc_call *c REF_ARG) {
   GRPC_CALL_STACK_UNREF(exec_ctx, CALL_STACK_FROM_CALL(c), REF_REASON);
 }
 
+static void get_final_status(grpc_call *call,
+                             void (*set_value)(grpc_status_code code,
+                                               void *user_data),
+                             void *set_value_user_data) {
+  int i;
+  for (i = 0; i < STATUS_SOURCE_COUNT; i++) {
+    if (call->status[i].is_set) {
+      set_value(call->status[i].code, set_value_user_data);
+      return;
+    }
+  }
+  if (call->is_client) {
+    set_value(GRPC_STATUS_UNKNOWN, set_value_user_data);
+  } else {
+    set_value(GRPC_STATUS_OK, set_value_user_data);
+  }
+}
+
+static void set_status_value_directly(grpc_status_code status, void *dest);
 static void destroy_call(grpc_exec_ctx *exec_ctx, void *call,
                          grpc_error *error) {
   size_t i;
@@ -392,7 +412,11 @@ static void destroy_call(grpc_exec_ctx *exec_ctx, void *call,
     GRPC_CQ_INTERNAL_UNREF(c->cq, "bind");
   }
   grpc_channel *channel = c->channel;
-  grpc_call_stack_destroy(exec_ctx, CALL_STACK_FROM_CALL(c), &c->stats, c);
+
+  get_final_status(call, set_status_value_directly,
+                   &c->final_info.final_status);
+
+  grpc_call_stack_destroy(exec_ctx, CALL_STACK_FROM_CALL(c), &c->final_info, c);
   GRPC_CHANNEL_INTERNAL_UNREF(exec_ctx, channel, "call");
   GPR_TIMER_END("destroy_call", 0);
 }
@@ -414,24 +438,6 @@ static void set_status_details(grpc_call *call, status_source source,
   }
 }
 
-static void get_final_status(grpc_call *call,
-                             void (*set_value)(grpc_status_code code,
-                                               void *user_data),
-                             void *set_value_user_data) {
-  int i;
-  for (i = 0; i < STATUS_SOURCE_COUNT; i++) {
-    if (call->status[i].is_set) {
-      set_value(call->status[i].code, set_value_user_data);
-      return;
-    }
-  }
-  if (call->is_client) {
-    set_value(GRPC_STATUS_UNKNOWN, set_value_user_data);
-  } else {
-    set_value(GRPC_STATUS_OK, set_value_user_data);
-  }
-}
-
 static void set_status_from_error(grpc_call *call, status_source source,
                                   grpc_error *error) {
   intptr_t status;
@@ -1608,7 +1614,8 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx,
         bctl->recv_final_op = 1;
         stream_op.recv_trailing_metadata =
             &call->metadata_batch[1 /* is_receiving */][1 /* is_trailing */];
-        stream_op.collect_stats = &call->stats.transport_stream_stats;
+        stream_op.collect_stats =
+            &call->final_info.stats.transport_stream_stats;
         break;
       case GRPC_OP_RECV_CLOSE_ON_SERVER:
         /* Flag validation: currently allow no flags */
@@ -1630,7 +1637,8 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx,
         bctl->recv_final_op = 1;
         stream_op.recv_trailing_metadata =
             &call->metadata_batch[1 /* is_receiving */][1 /* is_trailing */];
-        stream_op.collect_stats = &call->stats.transport_stream_stats;
+        stream_op.collect_stats =
+            &call->final_info.stats.transport_stream_stats;
         break;
     }
   }
diff --git a/src/core/lib/surface/lame_client.c b/src/core/lib/surface/lame_client.c
index 5ea4cba5d1..0d3168e56a 100644
--- a/src/core/lib/surface/lame_client.c
+++ b/src/core/lib/surface/lame_client.c
@@ -111,7 +111,7 @@ static void init_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
                            grpc_call_element_args *args) {}
 
 static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
-                              const grpc_call_stats *stats,
+                              const grpc_call_final_info *final_info,
                               void *and_free_memory) {
   gpr_free(and_free_memory);
 }
diff --git a/src/core/lib/surface/server.c b/src/core/lib/surface/server.c
index 2f108af48a..a482ba43d8 100644
--- a/src/core/lib/surface/server.c
+++ b/src/core/lib/surface/server.c
@@ -872,7 +872,8 @@ static void init_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
 }
 
 static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
-                              const grpc_call_stats *stats, void *ignored) {
+                              const grpc_call_final_info *final_info,
+                              void *ignored) {
   channel_data *chand = elem->channel_data;
   call_data *calld = elem->call_data;
 
diff --git a/src/core/lib/transport/static_metadata.c b/src/core/lib/transport/static_metadata.c
index c5f16e530d..c396c1e0b5 100644
--- a/src/core/lib/transport/static_metadata.c
+++ b/src/core/lib/transport/static_metadata.c
@@ -45,10 +45,10 @@ 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, 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, 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, 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, 0, 0, 0};
 
 const uint8_t grpc_static_metadata_elem_indices[GRPC_STATIC_MDELEM_COUNT * 2] =
     {11, 35, 10, 35, 12, 35, 12, 49, 13, 35, 14, 35, 15, 35, 16, 35, 17, 35,
@@ -56,10 +56,10 @@ const uint8_t grpc_static_metadata_elem_indices[GRPC_STATIC_MDELEM_COUNT * 2] =
      30, 18, 30, 35, 31, 35, 32, 35, 36, 35, 37, 35, 38, 35, 39, 35, 42, 33,
      42, 34, 42, 48, 42, 53, 42, 54, 42, 55, 42, 56, 43, 33, 43, 48, 43, 53,
      46, 0,  46, 1,  46, 2,  50, 35, 57, 35, 58, 35, 59, 35, 60, 35, 61, 35,
-     62, 35, 63, 35, 64, 35, 65, 35, 66, 35, 67, 40, 67, 69, 67, 72, 68, 80,
-     68, 81, 70, 35, 71, 35, 73, 35, 74, 35, 75, 35, 76, 35, 77, 41, 77, 51,
-     77, 52, 78, 35, 79, 35, 82, 3,  82, 4,  82, 5,  82, 6,  82, 7,  82, 8,
-     82, 9,  83, 35, 84, 85, 86, 35, 87, 35, 88, 35, 89, 35, 90, 35};
+     62, 35, 63, 35, 64, 35, 65, 35, 66, 35, 67, 35, 68, 40, 68, 70, 68, 73,
+     69, 81, 69, 82, 71, 35, 72, 35, 74, 35, 75, 35, 76, 35, 77, 35, 78, 41,
+     78, 51, 78, 52, 79, 35, 80, 35, 83, 3,  83, 4,  83, 5,  83, 6,  83, 7,
+     83, 8,  83, 9,  84, 35, 85, 86, 87, 35, 88, 35, 89, 35, 90, 35, 91, 35};
 
 const char *const grpc_static_metadata_strings[GRPC_STATIC_MDSTR_COUNT] = {
     "0",
@@ -126,7 +126,8 @@ const char *const grpc_static_metadata_strings[GRPC_STATIC_MDSTR_COUNT] = {
     "if-unmodified-since",
     "last-modified",
     "link",
-    "load-reporting",
+    "load-reporting-initial",
+    "load-reporting-trailing",
     "location",
     "max-forwards",
     ":method",
diff --git a/src/core/lib/transport/static_metadata.h b/src/core/lib/transport/static_metadata.h
index 5ff0d2f3bc..491c8cf125 100644
--- a/src/core/lib/transport/static_metadata.h
+++ b/src/core/lib/transport/static_metadata.h
@@ -44,7 +44,7 @@
 
 #include "src/core/lib/transport/metadata.h"
 
-#define GRPC_STATIC_MDSTR_COUNT 91
+#define GRPC_STATIC_MDSTR_COUNT 92
 extern grpc_mdstr grpc_static_mdstr_table[GRPC_STATIC_MDSTR_COUNT];
 /* "0" */
 #define GRPC_MDSTR_0 (&grpc_static_mdstr_table[0])
@@ -175,62 +175,64 @@ extern grpc_mdstr grpc_static_mdstr_table[GRPC_STATIC_MDSTR_COUNT];
 #define GRPC_MDSTR_LAST_MODIFIED (&grpc_static_mdstr_table[62])
 /* "link" */
 #define GRPC_MDSTR_LINK (&grpc_static_mdstr_table[63])
-/* "load-reporting" */
-#define GRPC_MDSTR_LOAD_REPORTING (&grpc_static_mdstr_table[64])
+/* "load-reporting-initial" */
+#define GRPC_MDSTR_LOAD_REPORTING_INITIAL (&grpc_static_mdstr_table[64])
+/* "load-reporting-trailing" */
+#define GRPC_MDSTR_LOAD_REPORTING_TRAILING (&grpc_static_mdstr_table[65])
 /* "location" */
-#define GRPC_MDSTR_LOCATION (&grpc_static_mdstr_table[65])
+#define GRPC_MDSTR_LOCATION (&grpc_static_mdstr_table[66])
 /* "max-forwards" */
-#define GRPC_MDSTR_MAX_FORWARDS (&grpc_static_mdstr_table[66])
+#define GRPC_MDSTR_MAX_FORWARDS (&grpc_static_mdstr_table[67])
 /* ":method" */
-#define GRPC_MDSTR_METHOD (&grpc_static_mdstr_table[67])
+#define GRPC_MDSTR_METHOD (&grpc_static_mdstr_table[68])
 /* ":path" */
-#define GRPC_MDSTR_PATH (&grpc_static_mdstr_table[68])
+#define GRPC_MDSTR_PATH (&grpc_static_mdstr_table[69])
 /* "POST" */
-#define GRPC_MDSTR_POST (&grpc_static_mdstr_table[69])
+#define GRPC_MDSTR_POST (&grpc_static_mdstr_table[70])
 /* "proxy-authenticate" */
-#define GRPC_MDSTR_PROXY_AUTHENTICATE (&grpc_static_mdstr_table[70])
+#define GRPC_MDSTR_PROXY_AUTHENTICATE (&grpc_static_mdstr_table[71])
 /* "proxy-authorization" */
-#define GRPC_MDSTR_PROXY_AUTHORIZATION (&grpc_static_mdstr_table[71])
+#define GRPC_MDSTR_PROXY_AUTHORIZATION (&grpc_static_mdstr_table[72])
 /* "PUT" */
-#define GRPC_MDSTR_PUT (&grpc_static_mdstr_table[72])
+#define GRPC_MDSTR_PUT (&grpc_static_mdstr_table[73])
 /* "range" */
-#define GRPC_MDSTR_RANGE (&grpc_static_mdstr_table[73])
+#define GRPC_MDSTR_RANGE (&grpc_static_mdstr_table[74])
 /* "referer" */
-#define GRPC_MDSTR_REFERER (&grpc_static_mdstr_table[74])
+#define GRPC_MDSTR_REFERER (&grpc_static_mdstr_table[75])
 /* "refresh" */
-#define GRPC_MDSTR_REFRESH (&grpc_static_mdstr_table[75])
+#define GRPC_MDSTR_REFRESH (&grpc_static_mdstr_table[76])
 /* "retry-after" */
-#define GRPC_MDSTR_RETRY_AFTER (&grpc_static_mdstr_table[76])
+#define GRPC_MDSTR_RETRY_AFTER (&grpc_static_mdstr_table[77])
 /* ":scheme" */
-#define GRPC_MDSTR_SCHEME (&grpc_static_mdstr_table[77])
+#define GRPC_MDSTR_SCHEME (&grpc_static_mdstr_table[78])
 /* "server" */
-#define GRPC_MDSTR_SERVER (&grpc_static_mdstr_table[78])
+#define GRPC_MDSTR_SERVER (&grpc_static_mdstr_table[79])
 /* "set-cookie" */
-#define GRPC_MDSTR_SET_COOKIE (&grpc_static_mdstr_table[79])
+#define GRPC_MDSTR_SET_COOKIE (&grpc_static_mdstr_table[80])
 /* "/" */
-#define GRPC_MDSTR_SLASH (&grpc_static_mdstr_table[80])
+#define GRPC_MDSTR_SLASH (&grpc_static_mdstr_table[81])
 /* "/index.html" */
-#define GRPC_MDSTR_SLASH_INDEX_DOT_HTML (&grpc_static_mdstr_table[81])
+#define GRPC_MDSTR_SLASH_INDEX_DOT_HTML (&grpc_static_mdstr_table[82])
 /* ":status" */
-#define GRPC_MDSTR_STATUS (&grpc_static_mdstr_table[82])
+#define GRPC_MDSTR_STATUS (&grpc_static_mdstr_table[83])
 /* "strict-transport-security" */
-#define GRPC_MDSTR_STRICT_TRANSPORT_SECURITY (&grpc_static_mdstr_table[83])
+#define GRPC_MDSTR_STRICT_TRANSPORT_SECURITY (&grpc_static_mdstr_table[84])
 /* "te" */
-#define GRPC_MDSTR_TE (&grpc_static_mdstr_table[84])
+#define GRPC_MDSTR_TE (&grpc_static_mdstr_table[85])
 /* "trailers" */
-#define GRPC_MDSTR_TRAILERS (&grpc_static_mdstr_table[85])
+#define GRPC_MDSTR_TRAILERS (&grpc_static_mdstr_table[86])
 /* "transfer-encoding" */
-#define GRPC_MDSTR_TRANSFER_ENCODING (&grpc_static_mdstr_table[86])
+#define GRPC_MDSTR_TRANSFER_ENCODING (&grpc_static_mdstr_table[87])
 /* "user-agent" */
-#define GRPC_MDSTR_USER_AGENT (&grpc_static_mdstr_table[87])
+#define GRPC_MDSTR_USER_AGENT (&grpc_static_mdstr_table[88])
 /* "vary" */
-#define GRPC_MDSTR_VARY (&grpc_static_mdstr_table[88])
+#define GRPC_MDSTR_VARY (&grpc_static_mdstr_table[89])
 /* "via" */
-#define GRPC_MDSTR_VIA (&grpc_static_mdstr_table[89])
+#define GRPC_MDSTR_VIA (&grpc_static_mdstr_table[90])
 /* "www-authenticate" */
-#define GRPC_MDSTR_WWW_AUTHENTICATE (&grpc_static_mdstr_table[90])
+#define GRPC_MDSTR_WWW_AUTHENTICATE (&grpc_static_mdstr_table[91])
 
-#define GRPC_STATIC_MDELEM_COUNT 80
+#define GRPC_STATIC_MDELEM_COUNT 81
 extern grpc_mdelem grpc_static_mdelem_table[GRPC_STATIC_MDELEM_COUNT];
 extern uintptr_t grpc_static_mdelem_user_data[GRPC_STATIC_MDELEM_COUNT];
 /* "accept-charset": "" */
@@ -335,73 +337,76 @@ extern uintptr_t grpc_static_mdelem_user_data[GRPC_STATIC_MDELEM_COUNT];
 #define GRPC_MDELEM_LAST_MODIFIED_EMPTY (&grpc_static_mdelem_table[45])
 /* "link": "" */
 #define GRPC_MDELEM_LINK_EMPTY (&grpc_static_mdelem_table[46])
-/* "load-reporting": "" */
-#define GRPC_MDELEM_LOAD_REPORTING_EMPTY (&grpc_static_mdelem_table[47])
+/* "load-reporting-initial": "" */
+#define GRPC_MDELEM_LOAD_REPORTING_INITIAL_EMPTY (&grpc_static_mdelem_table[47])
+/* "load-reporting-trailing": "" */
+#define GRPC_MDELEM_LOAD_REPORTING_TRAILING_EMPTY \
+  (&grpc_static_mdelem_table[48])
 /* "location": "" */
-#define GRPC_MDELEM_LOCATION_EMPTY (&grpc_static_mdelem_table[48])
+#define GRPC_MDELEM_LOCATION_EMPTY (&grpc_static_mdelem_table[49])
 /* "max-forwards": "" */
-#define GRPC_MDELEM_MAX_FORWARDS_EMPTY (&grpc_static_mdelem_table[49])
+#define GRPC_MDELEM_MAX_FORWARDS_EMPTY (&grpc_static_mdelem_table[50])
 /* ":method": "GET" */
-#define GRPC_MDELEM_METHOD_GET (&grpc_static_mdelem_table[50])
+#define GRPC_MDELEM_METHOD_GET (&grpc_static_mdelem_table[51])
 /* ":method": "POST" */
-#define GRPC_MDELEM_METHOD_POST (&grpc_static_mdelem_table[51])
+#define GRPC_MDELEM_METHOD_POST (&grpc_static_mdelem_table[52])
 /* ":method": "PUT" */
-#define GRPC_MDELEM_METHOD_PUT (&grpc_static_mdelem_table[52])
+#define GRPC_MDELEM_METHOD_PUT (&grpc_static_mdelem_table[53])
 /* ":path": "/" */
-#define GRPC_MDELEM_PATH_SLASH (&grpc_static_mdelem_table[53])
+#define GRPC_MDELEM_PATH_SLASH (&grpc_static_mdelem_table[54])
 /* ":path": "/index.html" */
-#define GRPC_MDELEM_PATH_SLASH_INDEX_DOT_HTML (&grpc_static_mdelem_table[54])
+#define GRPC_MDELEM_PATH_SLASH_INDEX_DOT_HTML (&grpc_static_mdelem_table[55])
 /* "proxy-authenticate": "" */
-#define GRPC_MDELEM_PROXY_AUTHENTICATE_EMPTY (&grpc_static_mdelem_table[55])
+#define GRPC_MDELEM_PROXY_AUTHENTICATE_EMPTY (&grpc_static_mdelem_table[56])
 /* "proxy-authorization": "" */
-#define GRPC_MDELEM_PROXY_AUTHORIZATION_EMPTY (&grpc_static_mdelem_table[56])
+#define GRPC_MDELEM_PROXY_AUTHORIZATION_EMPTY (&grpc_static_mdelem_table[57])
 /* "range": "" */
-#define GRPC_MDELEM_RANGE_EMPTY (&grpc_static_mdelem_table[57])
+#define GRPC_MDELEM_RANGE_EMPTY (&grpc_static_mdelem_table[58])
 /* "referer": "" */
-#define GRPC_MDELEM_REFERER_EMPTY (&grpc_static_mdelem_table[58])
+#define GRPC_MDELEM_REFERER_EMPTY (&grpc_static_mdelem_table[59])
 /* "refresh": "" */
-#define GRPC_MDELEM_REFRESH_EMPTY (&grpc_static_mdelem_table[59])
+#define GRPC_MDELEM_REFRESH_EMPTY (&grpc_static_mdelem_table[60])
 /* "retry-after": "" */
-#define GRPC_MDELEM_RETRY_AFTER_EMPTY (&grpc_static_mdelem_table[60])
+#define GRPC_MDELEM_RETRY_AFTER_EMPTY (&grpc_static_mdelem_table[61])
 /* ":scheme": "grpc" */
-#define GRPC_MDELEM_SCHEME_GRPC (&grpc_static_mdelem_table[61])
+#define GRPC_MDELEM_SCHEME_GRPC (&grpc_static_mdelem_table[62])
 /* ":scheme": "http" */
-#define GRPC_MDELEM_SCHEME_HTTP (&grpc_static_mdelem_table[62])
+#define GRPC_MDELEM_SCHEME_HTTP (&grpc_static_mdelem_table[63])
 /* ":scheme": "https" */
-#define GRPC_MDELEM_SCHEME_HTTPS (&grpc_static_mdelem_table[63])
+#define GRPC_MDELEM_SCHEME_HTTPS (&grpc_static_mdelem_table[64])
 /* "server": "" */
-#define GRPC_MDELEM_SERVER_EMPTY (&grpc_static_mdelem_table[64])
+#define GRPC_MDELEM_SERVER_EMPTY (&grpc_static_mdelem_table[65])
 /* "set-cookie": "" */
-#define GRPC_MDELEM_SET_COOKIE_EMPTY (&grpc_static_mdelem_table[65])
+#define GRPC_MDELEM_SET_COOKIE_EMPTY (&grpc_static_mdelem_table[66])
 /* ":status": "200" */
-#define GRPC_MDELEM_STATUS_200 (&grpc_static_mdelem_table[66])
+#define GRPC_MDELEM_STATUS_200 (&grpc_static_mdelem_table[67])
 /* ":status": "204" */
-#define GRPC_MDELEM_STATUS_204 (&grpc_static_mdelem_table[67])
+#define GRPC_MDELEM_STATUS_204 (&grpc_static_mdelem_table[68])
 /* ":status": "206" */
-#define GRPC_MDELEM_STATUS_206 (&grpc_static_mdelem_table[68])
+#define GRPC_MDELEM_STATUS_206 (&grpc_static_mdelem_table[69])
 /* ":status": "304" */
-#define GRPC_MDELEM_STATUS_304 (&grpc_static_mdelem_table[69])
+#define GRPC_MDELEM_STATUS_304 (&grpc_static_mdelem_table[70])
 /* ":status": "400" */
-#define GRPC_MDELEM_STATUS_400 (&grpc_static_mdelem_table[70])
+#define GRPC_MDELEM_STATUS_400 (&grpc_static_mdelem_table[71])
 /* ":status": "404" */
-#define GRPC_MDELEM_STATUS_404 (&grpc_static_mdelem_table[71])
+#define GRPC_MDELEM_STATUS_404 (&grpc_static_mdelem_table[72])
 /* ":status": "500" */
-#define GRPC_MDELEM_STATUS_500 (&grpc_static_mdelem_table[72])
+#define GRPC_MDELEM_STATUS_500 (&grpc_static_mdelem_table[73])
 /* "strict-transport-security": "" */
 #define GRPC_MDELEM_STRICT_TRANSPORT_SECURITY_EMPTY \
-  (&grpc_static_mdelem_table[73])
+  (&grpc_static_mdelem_table[74])
 /* "te": "trailers" */
-#define GRPC_MDELEM_TE_TRAILERS (&grpc_static_mdelem_table[74])
+#define GRPC_MDELEM_TE_TRAILERS (&grpc_static_mdelem_table[75])
 /* "transfer-encoding": "" */
-#define GRPC_MDELEM_TRANSFER_ENCODING_EMPTY (&grpc_static_mdelem_table[75])
+#define GRPC_MDELEM_TRANSFER_ENCODING_EMPTY (&grpc_static_mdelem_table[76])
 /* "user-agent": "" */
-#define GRPC_MDELEM_USER_AGENT_EMPTY (&grpc_static_mdelem_table[76])
+#define GRPC_MDELEM_USER_AGENT_EMPTY (&grpc_static_mdelem_table[77])
 /* "vary": "" */
-#define GRPC_MDELEM_VARY_EMPTY (&grpc_static_mdelem_table[77])
+#define GRPC_MDELEM_VARY_EMPTY (&grpc_static_mdelem_table[78])
 /* "via": "" */
-#define GRPC_MDELEM_VIA_EMPTY (&grpc_static_mdelem_table[78])
+#define GRPC_MDELEM_VIA_EMPTY (&grpc_static_mdelem_table[79])
 /* "www-authenticate": "" */
-#define GRPC_MDELEM_WWW_AUTHENTICATE_EMPTY (&grpc_static_mdelem_table[79])
+#define GRPC_MDELEM_WWW_AUTHENTICATE_EMPTY (&grpc_static_mdelem_table[80])
 
 extern const uint8_t
     grpc_static_metadata_elem_indices[GRPC_STATIC_MDELEM_COUNT * 2];
diff --git a/src/core/plugin_registry/grpc_plugin_registry.c b/src/core/plugin_registry/grpc_plugin_registry.c
index 905cd59e23..7a7a9ce477 100644
--- a/src/core/plugin_registry/grpc_plugin_registry.c
+++ b/src/core/plugin_registry/grpc_plugin_registry.c
@@ -37,6 +37,8 @@ extern void grpc_chttp2_plugin_init(void);
 extern void grpc_chttp2_plugin_shutdown(void);
 extern void grpc_client_config_init(void);
 extern void grpc_client_config_shutdown(void);
+extern void grpc_lb_policy_grpclb_init(void);
+extern void grpc_lb_policy_grpclb_shutdown(void);
 extern void grpc_lb_policy_pick_first_init(void);
 extern void grpc_lb_policy_pick_first_shutdown(void);
 extern void grpc_lb_policy_round_robin_init(void);
@@ -55,6 +57,8 @@ void grpc_register_built_in_plugins(void) {
                        grpc_chttp2_plugin_shutdown);
   grpc_register_plugin(grpc_client_config_init,
                        grpc_client_config_shutdown);
+  grpc_register_plugin(grpc_lb_policy_grpclb_init,
+                       grpc_lb_policy_grpclb_shutdown);
   grpc_register_plugin(grpc_lb_policy_pick_first_init,
                        grpc_lb_policy_pick_first_shutdown);
   grpc_register_plugin(grpc_lb_policy_round_robin_init,
diff --git a/src/core/plugin_registry/grpc_unsecure_plugin_registry.c b/src/core/plugin_registry/grpc_unsecure_plugin_registry.c
index 7995078725..ad4ddf0ff4 100644
--- a/src/core/plugin_registry/grpc_unsecure_plugin_registry.c
+++ b/src/core/plugin_registry/grpc_unsecure_plugin_registry.c
@@ -43,6 +43,8 @@ extern void grpc_resolver_sockaddr_init(void);
 extern void grpc_resolver_sockaddr_shutdown(void);
 extern void grpc_load_reporting_plugin_init(void);
 extern void grpc_load_reporting_plugin_shutdown(void);
+extern void grpc_lb_policy_grpclb_init(void);
+extern void grpc_lb_policy_grpclb_shutdown(void);
 extern void grpc_lb_policy_pick_first_init(void);
 extern void grpc_lb_policy_pick_first_shutdown(void);
 extern void grpc_lb_policy_round_robin_init(void);
@@ -61,6 +63,8 @@ void grpc_register_built_in_plugins(void) {
                        grpc_resolver_sockaddr_shutdown);
   grpc_register_plugin(grpc_load_reporting_plugin_init,
                        grpc_load_reporting_plugin_shutdown);
+  grpc_register_plugin(grpc_lb_policy_grpclb_init,
+                       grpc_lb_policy_grpclb_shutdown);
   grpc_register_plugin(grpc_lb_policy_pick_first_init,
                        grpc_lb_policy_pick_first_shutdown);
   grpc_register_plugin(grpc_lb_policy_round_robin_init,
diff --git a/src/cpp/server/server_context.cc b/src/cpp/server/server_context.cc
index 43117fd1e9..1ca6a2b906 100644
--- a/src/cpp/server/server_context.cc
+++ b/src/cpp/server/server_context.cc
@@ -129,7 +129,8 @@ ServerContext::ServerContext()
       deadline_(gpr_inf_future(GPR_CLOCK_REALTIME)),
       call_(nullptr),
       cq_(nullptr),
-      sent_initial_metadata_(false) {}
+      sent_initial_metadata_(false),
+      compression_level_set_(false) {}
 
 ServerContext::ServerContext(gpr_timespec deadline, grpc_metadata* metadata,
                              size_t metadata_count)
@@ -139,7 +140,8 @@ ServerContext::ServerContext(gpr_timespec deadline, grpc_metadata* metadata,
       deadline_(deadline),
       call_(nullptr),
       cq_(nullptr),
-      sent_initial_metadata_(false) {
+      sent_initial_metadata_(false),
+      compression_level_set_(false) {
   for (size_t i = 0; i < metadata_count; i++) {
     client_metadata_.insert(std::pair<grpc::string_ref, grpc::string_ref>(
         metadata[i].key,
@@ -194,15 +196,6 @@ bool ServerContext::IsCancelled() const {
   }
 }
 
-void ServerContext::set_compression_level(grpc_compression_level level) {
-  // TODO(dgq): get rid of grpc_call_compression_for_level and propagate the
-  // compression level by adding a new argument to
-  // CallOpSendInitialMetadata::SendInitialMetadata.
-  const grpc_compression_algorithm algorithm_for_level =
-      grpc_call_compression_for_level(call_, level);
-  set_compression_algorithm(algorithm_for_level);
-}
-
 void ServerContext::set_compression_algorithm(
     grpc_compression_algorithm algorithm) {
   char* algorithm_name = NULL;
diff --git a/src/csharp/.nuget/packages.config b/src/csharp/.nuget/packages.config
deleted file mode 100644
index 6154b3561f..0000000000
--- a/src/csharp/.nuget/packages.config
+++ /dev/null
@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<packages>
-  <package id="NUnit.ConsoleRunner" version="3.2.0" />
-  <package id="OpenCover" version="4.6.519" />
-  <package id="ReportGenerator" version="2.4.4.0" />
-</packages>
\ No newline at end of file
diff --git a/src/csharp/Grpc.Core.Tests/SanityTest.cs b/src/csharp/Grpc.Core.Tests/SanityTest.cs
index 501992c569..9d069fa432 100644
--- a/src/csharp/Grpc.Core.Tests/SanityTest.cs
+++ b/src/csharp/Grpc.Core.Tests/SanityTest.cs
@@ -58,10 +58,11 @@ namespace Grpc.Core.Tests
         [Test]
         public void TestsJsonUpToDate()
         {
-            var discoveredTests = DiscoverAllTestClasses();
-            string discoveredTestsJson = JsonConvert.SerializeObject(discoveredTests, Formatting.Indented);
+            Dictionary<string, List<string>> discoveredTests = DiscoverAllTestClasses();
+			Dictionary<string, List<string>> testsFromFile 
+			    = JsonConvert.DeserializeObject<Dictionary<string, List<string>>>(ReadTestsJson());
 
-            Assert.AreEqual(discoveredTestsJson, ReadTestsJson());
+            Assert.AreEqual(discoveredTests, testsFromFile);
         }
 
         /// <summary>
diff --git a/src/csharp/Grpc.Core.Tests/packages.config b/src/csharp/Grpc.Core.Tests/packages.config
index aa7d951fdc..6a930c17ee 100644
--- a/src/csharp/Grpc.Core.Tests/packages.config
+++ b/src/csharp/Grpc.Core.Tests/packages.config
@@ -4,4 +4,7 @@
   <package id="Newtonsoft.Json" version="7.0.1" targetFramework="net45" />
   <package id="NUnit" version="3.2.0" targetFramework="net45" />
   <package id="NUnitLite" version="3.2.0" targetFramework="net45" />
-</packages>
\ No newline at end of file
+  <package id="NUnit.ConsoleRunner" version="3.2.0" />
+  <package id="OpenCover" version="4.6.519" />
+  <package id="ReportGenerator" version="2.4.4.0" />
+</packages>
diff --git a/src/csharp/Grpc.Core.Tests/project.json b/src/csharp/Grpc.Core.Tests/project.json
index d4c9a2ef31..4a682d927e 100644
--- a/src/csharp/Grpc.Core.Tests/project.json
+++ b/src/csharp/Grpc.Core.Tests/project.json
@@ -54,7 +54,10 @@
     },
     "Newtonsoft.Json": "8.0.3",
     "NUnit": "3.2.0",
-    "NUnitLite": "3.2.0-*"
+    "NUnitLite": "3.2.0-*",
+    "NUnit.ConsoleRunner": "3.2.0",
+    "OpenCover": "4.6.519",
+    "ReportGenerator": "2.4.4.0"
   },
   "frameworks": {
     "net45": { },
diff --git a/src/csharp/Grpc.Examples.MathClient/packages.config b/src/csharp/Grpc.Examples.MathClient/packages.config
new file mode 100644
index 0000000000..79ece06bef
--- /dev/null
+++ b/src/csharp/Grpc.Examples.MathClient/packages.config
@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+</packages>
diff --git a/src/csharp/Grpc.Examples.MathServer/packages.config b/src/csharp/Grpc.Examples.MathServer/packages.config
new file mode 100644
index 0000000000..79ece06bef
--- /dev/null
+++ b/src/csharp/Grpc.Examples.MathServer/packages.config
@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+</packages>
diff --git a/src/csharp/Grpc.IntegrationTesting.QpsWorker/packages.config b/src/csharp/Grpc.IntegrationTesting.QpsWorker/packages.config
new file mode 100644
index 0000000000..79ece06bef
--- /dev/null
+++ b/src/csharp/Grpc.IntegrationTesting.QpsWorker/packages.config
@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+</packages>
diff --git a/src/csharp/Grpc.IntegrationTesting.StressClient/packages.config b/src/csharp/Grpc.IntegrationTesting.StressClient/packages.config
new file mode 100644
index 0000000000..79ece06bef
--- /dev/null
+++ b/src/csharp/Grpc.IntegrationTesting.StressClient/packages.config
@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+</packages>
diff --git a/src/node/ext/call_credentials.cc b/src/node/ext/call_credentials.cc
index 3c8f0c56da..81fc552fd1 100644
--- a/src/node/ext/call_credentials.cc
+++ b/src/node/ext/call_credentials.cc
@@ -68,6 +68,8 @@ using v8::Value;
 Nan::Callback *CallCredentials::constructor;
 Persistent<FunctionTemplate> CallCredentials::fun_tpl;
 
+static Callback *plugin_callback;
+
 CallCredentials::CallCredentials(grpc_call_credentials *credentials)
     : wrapped_credentials(credentials) {}
 
@@ -88,6 +90,11 @@ void CallCredentials::Init(Local<Object> exports) {
                Nan::New<FunctionTemplate>(CreateFromPlugin)).ToLocalChecked());
   Nan::Set(exports, Nan::New("CallCredentials").ToLocalChecked(), ctr);
   constructor = new Nan::Callback(ctr);
+
+  Local<FunctionTemplate> callback_tpl =
+      Nan::New<FunctionTemplate>(PluginCallback);
+  plugin_callback = new Callback(
+      Nan::GetFunction(callback_tpl).ToLocalChecked());
 }
 
 bool CallCredentials::HasInstance(Local<Value> val) {
@@ -195,23 +202,28 @@ NAN_METHOD(PluginCallback) {
     return Nan::ThrowTypeError(
         "The callback's third argument must be an object");
   }
+  if (!info[3]->IsObject()) {
+    return Nan::ThrowTypeError(
+        "The callback's fourth argument must be an object");
+  }
   shared_ptr<Resources> resources(new Resources);
   grpc_status_code code = static_cast<grpc_status_code>(
       Nan::To<uint32_t>(info[0]).FromJust());
   Utf8String details_utf8_str(info[1]);
   char *details = *details_utf8_str;
   grpc_metadata_array array;
+  Local<Object> callback_data = Nan::To<Object>(info[3]).ToLocalChecked();
   if (!CreateMetadataArray(Nan::To<Object>(info[2]).ToLocalChecked(),
                            &array, resources)){
     return Nan::ThrowError("Failed to parse metadata");
   }
   grpc_credentials_plugin_metadata_cb cb =
       reinterpret_cast<grpc_credentials_plugin_metadata_cb>(
-          Nan::Get(info.Callee(),
+          Nan::Get(callback_data,
                    Nan::New("cb").ToLocalChecked()
                    ).ToLocalChecked().As<External>()->Value());
   void *user_data =
-      Nan::Get(info.Callee(),
+      Nan::Get(callback_data,
                Nan::New("user_data").ToLocalChecked()
                ).ToLocalChecked().As<External>()->Value();
   cb(user_data, array.metadata, array.count, code, details);
@@ -227,17 +239,17 @@ NAUV_WORK_CB(SendPluginCallback) {
   while (!callbacks.empty()) {
     plugin_callback_data *data = callbacks.front();
     callbacks.pop_front();
-    // Attach cb and user_data to plugin_callback so that it can access them later
-    v8::Local<v8::Function> plugin_callback = Nan::GetFunction(
-        Nan::New<v8::FunctionTemplate>(PluginCallback)).ToLocalChecked();
-    Nan::Set(plugin_callback, Nan::New("cb").ToLocalChecked(),
+    Local<Object> callback_data = Nan::New<Object>();
+    Nan::Set(callback_data, Nan::New("cb").ToLocalChecked(),
              Nan::New<v8::External>(reinterpret_cast<void*>(data->cb)));
-    Nan::Set(plugin_callback, Nan::New("user_data").ToLocalChecked(),
+    Nan::Set(callback_data, Nan::New("user_data").ToLocalChecked(),
              Nan::New<v8::External>(data->user_data));
-    const int argc = 2;
+    const int argc = 3;
     v8::Local<v8::Value> argv[argc] = {
       Nan::New(data->service_url).ToLocalChecked(),
-      plugin_callback
+      callback_data,
+      // Get Local<Function> from Nan::Callback*
+      **plugin_callback
     };
     Nan::Callback *callback = state->callback;
     callback->Call(argc, argv);
diff --git a/src/node/health_check/package.json b/src/node/health_check/package.json
index 67f5301df7..40e276055b 100644
--- a/src/node/health_check/package.json
+++ b/src/node/health_check/package.json
@@ -19,11 +19,11 @@
     "lodash": "^3.9.3",
     "google-protobuf": "^3.0.0-alpha.5"
   },
-  "files": {
+  "files": [
     "LICENSE",
     "health.js",
     "v1"
-  },
+  ],
   "main": "src/node/index.js",
   "license": "BSD-3-Clause"
 }
diff --git a/src/node/src/credentials.js b/src/node/src/credentials.js
index b746d0625d..043df06a66 100644
--- a/src/node/src/credentials.js
+++ b/src/node/src/credentials.js
@@ -92,7 +92,8 @@ exports.createSsl = ChannelCredentials.createSsl;
  * @return {CallCredentials} The credentials object
  */
 exports.createFromMetadataGenerator = function(metadata_generator) {
-  return CallCredentials.createFromPlugin(function(service_url, callback) {
+  return CallCredentials.createFromPlugin(function(service_url, cb_data,
+                                                   callback) {
     metadata_generator({service_url: service_url}, function(error, metadata) {
       var code = grpc.status.OK;
       var message = '';
@@ -107,7 +108,7 @@ exports.createFromMetadataGenerator = function(metadata_generator) {
           metadata = new Metadata();
         }
       }
-      callback(code, message, metadata._getCoreRepresentation());
+      callback(code, message, metadata._getCoreRepresentation(), cb_data);
     });
   });
 };
diff --git a/src/objective-c/tests/InteropTestsRemoteWithCronet/Info.plist b/src/objective-c/tests/InteropTestsRemoteWithCronet/Info.plist
new file mode 100644
index 0000000000..ba72822e87
--- /dev/null
+++ b/src/objective-c/tests/InteropTestsRemoteWithCronet/Info.plist
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>en</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>BNDL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+</dict>
+</plist>
diff --git a/src/objective-c/tests/InteropTestsRemoteWithCronet/InteropTestsRemoteWithCronet.m b/src/objective-c/tests/InteropTestsRemoteWithCronet/InteropTestsRemoteWithCronet.m
new file mode 100644
index 0000000000..fab8ad8d25
--- /dev/null
+++ b/src/objective-c/tests/InteropTestsRemoteWithCronet/InteropTestsRemoteWithCronet.m
@@ -0,0 +1,50 @@
+/*
+ *
+ * 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.
+ *
+ */
+
+#import <GRPCClient/GRPCCall+Tests.h>
+
+#import "InteropTests.h"
+
+static NSString * const kRemoteSSLHost = @"grpc-test.sandbox.googleapis.com";
+
+/** Tests in InteropTests.m, sending the RPCs to a remote SSL server. */
+@interface InteropTestsRemoteWithCronet : InteropTests
+@end
+
+@implementation InteropTestsRemoteWithCronet
+
++ (NSString *)host {
+  return kRemoteSSLHost;
+}
+
+@end
diff --git a/src/objective-c/tests/Podfile b/src/objective-c/tests/Podfile
index db11208a1b..3d0664a04f 100644
--- a/src/objective-c/tests/Podfile
+++ b/src/objective-c/tests/Podfile
@@ -39,6 +39,22 @@ target 'CoreCronetEnd2EndTests' do
   pod 'gRPC-Core/Cronet-Tests', :path => GRPC_LOCAL_SRC
 end
 
+target 'InteropTestsRemoteWithCronet' do
+  pod 'Protobuf', :path => "#{GRPC_LOCAL_SRC}/third_party/protobuf", :inhibit_warnings => true
+
+  pod '!ProtoCompiler',            :path => "#{GRPC_LOCAL_SRC}/src/objective-c"
+  pod '!ProtoCompiler-gRPCPlugin', :path => "#{GRPC_LOCAL_SRC}/src/objective-c"
+
+  pod 'BoringSSL',       :podspec => "#{GRPC_LOCAL_SRC}/src/objective-c", :inhibit_warnings => true
+  pod 'CronetFramework', :podspec => "#{GRPC_LOCAL_SRC}/src/objective-c"
+  
+  pod 'gRPC',           :path => GRPC_LOCAL_SRC
+  pod 'gRPC-Core',      :path => GRPC_LOCAL_SRC
+  pod 'gRPC-RxLibrary', :path => GRPC_LOCAL_SRC
+  pod 'gRPC-ProtoRPC',  :path => GRPC_LOCAL_SRC
+  pod 'RemoteTest', :path => "RemoteTestClient"
+end
+
 # gRPC-Core.podspec needs to be modified to be successfully used for local development. A Podfile's
 # pre_install hook lets us do that. The block passed to it runs after the podspecs are downloaded
 # and before they are installed in the user project.
diff --git a/src/objective-c/tests/Tests.xcodeproj/project.pbxproj b/src/objective-c/tests/Tests.xcodeproj/project.pbxproj
index 2c80b08d03..1d903478fd 100644
--- a/src/objective-c/tests/Tests.xcodeproj/project.pbxproj
+++ b/src/objective-c/tests/Tests.xcodeproj/project.pbxproj
@@ -7,6 +7,7 @@
 	objects = {
 
 /* Begin PBXBuildFile section */
+		09B76D9585ACE7403804D9DC /* libPods-InteropTestsRemoteWithCronet.a in Frameworks */ = {isa = PBXBuildFile; fileRef = 9E9444C764F0FFF64A7EB58E /* libPods-InteropTestsRemoteWithCronet.a */; };
 		0F9232F984C08643FD40C34F /* libPods-InteropTestsRemote.a in Frameworks */ = {isa = PBXBuildFile; fileRef = DBE059B4AC7A51919467EEC0 /* libPods-InteropTestsRemote.a */; };
 		16A9E77B6E336B3C0B9BA6E0 /* libPods-InteropTestsLocalSSL.a in Frameworks */ = {isa = PBXBuildFile; fileRef = DBEDE45BDA60DF1E1C8950C0 /* libPods-InteropTestsLocalSSL.a */; };
 		20DFDF829DD993A4A00D5662 /* libPods-RxLibraryUnitTests.a in Frameworks */ = {isa = PBXBuildFile; fileRef = A58BE6DF1C62D1739EBB2C78 /* libPods-RxLibraryUnitTests.a */; };
@@ -14,6 +15,9 @@
 		3D7C85F6AA68C4A205E3BA16 /* libPods-Tests.a in Frameworks */ = {isa = PBXBuildFile; fileRef = 20DFF2F3C97EF098FE5A3171 /* libPods-Tests.a */; };
 		5E8A5DA71D3840B4000F8BC4 /* CoreCronetEnd2EndTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 5E8A5DA61D3840B4000F8BC4 /* CoreCronetEnd2EndTests.m */; };
 		5E8A5DA91D3840B4000F8BC4 /* libTests.a in Frameworks */ = {isa = PBXBuildFile; fileRef = 635697C71B14FC11007A7283 /* libTests.a */; };
+		5EE84BF41D4717E40050C6CC /* InteropTestsRemoteWithCronet.m in Sources */ = {isa = PBXBuildFile; fileRef = 5EE84BF31D4717E40050C6CC /* InteropTestsRemoteWithCronet.m */; };
+		5EE84BF61D4717E40050C6CC /* libTests.a in Frameworks */ = {isa = PBXBuildFile; fileRef = 635697C71B14FC11007A7283 /* libTests.a */; };
+		5EE84BFE1D471D400050C6CC /* InteropTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 635ED2EB1B1A3BC400FDE5C3 /* InteropTests.m */; };
 		60D2A57ED559F34428C2EEC5 /* libPods-CoreCronetEnd2EndTests.a in Frameworks */ = {isa = PBXBuildFile; fileRef = FBD98AC417B9882D32B19F28 /* libPods-CoreCronetEnd2EndTests.a */; };
 		6312AE4E1B1BF49B00341DEE /* GRPCClientTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 6312AE4D1B1BF49B00341DEE /* GRPCClientTests.m */; };
 		63423F4A1B150A5F006CF63C /* libTests.a in Frameworks */ = {isa = PBXBuildFile; fileRef = 635697C71B14FC11007A7283 /* libTests.a */; };
@@ -48,6 +52,13 @@
 			remoteGlobalIDString = 635697C61B14FC11007A7283;
 			remoteInfo = Tests;
 		};
+		5EE84BF71D4717E40050C6CC /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 635697BF1B14FC11007A7283 /* Project object */;
+			proxyType = 1;
+			remoteGlobalIDString = 635697C61B14FC11007A7283;
+			remoteInfo = Tests;
+		};
 		63423F4B1B150A5F006CF63C /* PBXContainerItemProxy */ = {
 			isa = PBXContainerItemProxy;
 			containerPortal = 635697BF1B14FC11007A7283 /* Project object */;
@@ -102,6 +113,7 @@
 		07D10A965323BEA7FE59A74B /* Pods-RxLibraryUnitTests.debug.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-RxLibraryUnitTests.debug.xcconfig"; path = "Pods/Target Support Files/Pods-RxLibraryUnitTests/Pods-RxLibraryUnitTests.debug.xcconfig"; sourceTree = "<group>"; };
 		0A4F89D9C90E9C30990218F0 /* Pods.release.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = Pods.release.xcconfig; path = "Pods/Target Support Files/Pods/Pods.release.xcconfig"; sourceTree = "<group>"; };
 		0D2284C3DF7E57F0ED504E39 /* Pods-CoreCronetEnd2EndTests.debug.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-CoreCronetEnd2EndTests.debug.xcconfig"; path = "Pods/Target Support Files/Pods-CoreCronetEnd2EndTests/Pods-CoreCronetEnd2EndTests.debug.xcconfig"; sourceTree = "<group>"; };
+		17F60BF2871F6AF85FB3FA12 /* Pods-InteropTestsRemoteWithCronet.debug.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-InteropTestsRemoteWithCronet.debug.xcconfig"; path = "Pods/Target Support Files/Pods-InteropTestsRemoteWithCronet/Pods-InteropTestsRemoteWithCronet.debug.xcconfig"; sourceTree = "<group>"; };
 		20DFF2F3C97EF098FE5A3171 /* libPods-Tests.a */ = {isa = PBXFileReference; explicitFileType = archive.ar; includeInIndex = 0; path = "libPods-Tests.a"; sourceTree = BUILT_PRODUCTS_DIR; };
 		35F2B6BF3BAE8F0DC4AFD76E /* libPods.a */ = {isa = PBXFileReference; explicitFileType = archive.ar; includeInIndex = 0; path = libPods.a; sourceTree = BUILT_PRODUCTS_DIR; };
 		3B0861FC805389C52DB260D4 /* Pods-RxLibraryUnitTests.release.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-RxLibraryUnitTests.release.xcconfig"; path = "Pods/Target Support Files/Pods-RxLibraryUnitTests/Pods-RxLibraryUnitTests.release.xcconfig"; sourceTree = "<group>"; };
@@ -111,6 +123,9 @@
 		5761E98978DDDF136A58CB7E /* Pods-AllTests.release.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-AllTests.release.xcconfig"; path = "Pods/Target Support Files/Pods-AllTests/Pods-AllTests.release.xcconfig"; sourceTree = "<group>"; };
 		5E8A5DA41D3840B4000F8BC4 /* CoreCronetEnd2EndTests.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = CoreCronetEnd2EndTests.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
 		5E8A5DA61D3840B4000F8BC4 /* CoreCronetEnd2EndTests.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = CoreCronetEnd2EndTests.m; sourceTree = "<group>"; };
+		5EE84BF11D4717E40050C6CC /* InteropTestsRemoteWithCronet.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = InteropTestsRemoteWithCronet.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
+		5EE84BF31D4717E40050C6CC /* InteropTestsRemoteWithCronet.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = InteropTestsRemoteWithCronet.m; sourceTree = "<group>"; };
+		5EE84BF51D4717E40050C6CC /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
 		6312AE4D1B1BF49B00341DEE /* GRPCClientTests.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = GRPCClientTests.m; sourceTree = "<group>"; };
 		63423F441B150A5F006CF63C /* AllTests.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = AllTests.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
 		63423F501B151B77006CF63C /* RxLibraryUnitTests.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = RxLibraryUnitTests.m; sourceTree = "<group>"; };
@@ -128,7 +143,9 @@
 		63E240CD1B6C4E2B005F3B0E /* InteropTestsLocalSSL.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = InteropTestsLocalSSL.m; sourceTree = "<group>"; };
 		63E240CF1B6C63DC005F3B0E /* TestCertificates.bundle */ = {isa = PBXFileReference; lastKnownFileType = "wrapper.plug-in"; path = TestCertificates.bundle; sourceTree = "<group>"; };
 		7A2E97E3F469CC2A758D77DE /* Pods-InteropTestsLocalSSL.release.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-InteropTestsLocalSSL.release.xcconfig"; path = "Pods/Target Support Files/Pods-InteropTestsLocalSSL/Pods-InteropTestsLocalSSL.release.xcconfig"; sourceTree = "<group>"; };
+		9E9444C764F0FFF64A7EB58E /* libPods-InteropTestsRemoteWithCronet.a */ = {isa = PBXFileReference; explicitFileType = archive.ar; includeInIndex = 0; path = "libPods-InteropTestsRemoteWithCronet.a"; sourceTree = BUILT_PRODUCTS_DIR; };
 		A58BE6DF1C62D1739EBB2C78 /* libPods-RxLibraryUnitTests.a */ = {isa = PBXFileReference; explicitFileType = archive.ar; includeInIndex = 0; path = "libPods-RxLibraryUnitTests.a"; sourceTree = BUILT_PRODUCTS_DIR; };
+		AC414EF7A6BF76ED02B6E480 /* Pods-InteropTestsRemoteWithCronet.release.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-InteropTestsRemoteWithCronet.release.xcconfig"; path = "Pods/Target Support Files/Pods-InteropTestsRemoteWithCronet/Pods-InteropTestsRemoteWithCronet.release.xcconfig"; sourceTree = "<group>"; };
 		B94C27C06733CF98CE1B2757 /* Pods-AllTests.debug.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-AllTests.debug.xcconfig"; path = "Pods/Target Support Files/Pods-AllTests/Pods-AllTests.debug.xcconfig"; sourceTree = "<group>"; };
 		CAE086D5B470DA367D415AB0 /* libPods-AllTests.a */ = {isa = PBXFileReference; explicitFileType = archive.ar; includeInIndex = 0; path = "libPods-AllTests.a"; sourceTree = BUILT_PRODUCTS_DIR; };
 		DBE059B4AC7A51919467EEC0 /* libPods-InteropTestsRemote.a */ = {isa = PBXFileReference; explicitFileType = archive.ar; includeInIndex = 0; path = "libPods-InteropTestsRemote.a"; sourceTree = BUILT_PRODUCTS_DIR; };
@@ -152,6 +169,15 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
+		5EE84BEE1D4717E40050C6CC /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				5EE84BF61D4717E40050C6CC /* libTests.a in Frameworks */,
+				09B76D9585ACE7403804D9DC /* libPods-InteropTestsRemoteWithCronet.a in Frameworks */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 		63423F411B150A5F006CF63C /* Frameworks */ = {
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
@@ -219,6 +245,7 @@
 				A58BE6DF1C62D1739EBB2C78 /* libPods-RxLibraryUnitTests.a */,
 				20DFF2F3C97EF098FE5A3171 /* libPods-Tests.a */,
 				FBD98AC417B9882D32B19F28 /* libPods-CoreCronetEnd2EndTests.a */,
+				9E9444C764F0FFF64A7EB58E /* libPods-InteropTestsRemoteWithCronet.a */,
 			);
 			name = Frameworks;
 			sourceTree = "<group>";
@@ -242,6 +269,8 @@
 				E6733B838B28453434B556E2 /* Pods-Tests.release.xcconfig */,
 				0D2284C3DF7E57F0ED504E39 /* Pods-CoreCronetEnd2EndTests.debug.xcconfig */,
 				4AD97096D13D7416DC91A72A /* Pods-CoreCronetEnd2EndTests.release.xcconfig */,
+				17F60BF2871F6AF85FB3FA12 /* Pods-InteropTestsRemoteWithCronet.debug.xcconfig */,
+				AC414EF7A6BF76ED02B6E480 /* Pods-InteropTestsRemoteWithCronet.release.xcconfig */,
 			);
 			name = Pods;
 			sourceTree = "<group>";
@@ -254,12 +283,22 @@
 			path = CoreCronetEnd2EndTests;
 			sourceTree = "<group>";
 		};
+		5EE84BF21D4717E40050C6CC /* InteropTestsRemoteWithCronet */ = {
+			isa = PBXGroup;
+			children = (
+				5EE84BF31D4717E40050C6CC /* InteropTestsRemoteWithCronet.m */,
+				5EE84BF51D4717E40050C6CC /* Info.plist */,
+			);
+			path = InteropTestsRemoteWithCronet;
+			sourceTree = "<group>";
+		};
 		635697BE1B14FC11007A7283 = {
 			isa = PBXGroup;
 			children = (
 				635697C91B14FC11007A7283 /* Tests */,
 				63E240CF1B6C63DC005F3B0E /* TestCertificates.bundle */,
 				5E8A5DA51D3840B4000F8BC4 /* CoreCronetEnd2EndTests */,
+				5EE84BF21D4717E40050C6CC /* InteropTestsRemoteWithCronet */,
 				635697C81B14FC11007A7283 /* Products */,
 				51E4650F34F854F41FF053B3 /* Pods */,
 				136D535E19727099B941D7B1 /* Frameworks */,
@@ -276,6 +315,7 @@
 				63DC84341BE15294000708E8 /* InteropTestsLocalSSL.xctest */,
 				63DC84431BE152B5000708E8 /* InteropTestsLocalCleartext.xctest */,
 				5E8A5DA41D3840B4000F8BC4 /* CoreCronetEnd2EndTests.xctest */,
+				5EE84BF11D4717E40050C6CC /* InteropTestsRemoteWithCronet.xctest */,
 			);
 			name = Products;
 			sourceTree = "<group>";
@@ -328,6 +368,27 @@
 			productReference = 5E8A5DA41D3840B4000F8BC4 /* CoreCronetEnd2EndTests.xctest */;
 			productType = "com.apple.product-type.bundle.unit-test";
 		};
+		5EE84BF01D4717E40050C6CC /* InteropTestsRemoteWithCronet */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = 5EE84BFB1D4717E40050C6CC /* Build configuration list for PBXNativeTarget "InteropTestsRemoteWithCronet" */;
+			buildPhases = (
+				C0F7B1FF6F88CC5FBF362F4C /* [CP] Check Pods Manifest.lock */,
+				5EE84BED1D4717E40050C6CC /* Sources */,
+				5EE84BEE1D4717E40050C6CC /* Frameworks */,
+				5EE84BEF1D4717E40050C6CC /* Resources */,
+				31F8D1C407195CBF0C02929B /* [CP] Embed Pods Frameworks */,
+				DB4D0E73C229F2FF3B364AB3 /* [CP] Copy Pods Resources */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+				5EE84BF81D4717E40050C6CC /* PBXTargetDependency */,
+			);
+			name = InteropTestsRemoteWithCronet;
+			productName = InteropTestsRemoteWithCronet;
+			productReference = 5EE84BF11D4717E40050C6CC /* InteropTestsRemoteWithCronet.xctest */;
+			productType = "com.apple.product-type.bundle.unit-test";
+		};
 		63423F431B150A5F006CF63C /* AllTests */ = {
 			isa = PBXNativeTarget;
 			buildConfigurationList = 63423F4D1B150A5F006CF63C /* Build configuration list for PBXNativeTarget "AllTests" */;
@@ -464,6 +525,9 @@
 					5E8A5DA31D3840B4000F8BC4 = {
 						CreatedOnToolsVersion = 7.3.1;
 					};
+					5EE84BF01D4717E40050C6CC = {
+						CreatedOnToolsVersion = 7.3.1;
+					};
 					63423F431B150A5F006CF63C = {
 						CreatedOnToolsVersion = 6.3.1;
 					};
@@ -503,6 +567,7 @@
 				63DC84331BE15294000708E8 /* InteropTestsLocalSSL */,
 				63DC84421BE152B5000708E8 /* InteropTestsLocalCleartext */,
 				5E8A5DA31D3840B4000F8BC4 /* CoreCronetEnd2EndTests */,
+				5EE84BF01D4717E40050C6CC /* InteropTestsRemoteWithCronet */,
 			);
 		};
 /* End PBXProject section */
@@ -515,6 +580,13 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
+		5EE84BEF1D4717E40050C6CC /* Resources */ = {
+			isa = PBXResourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 		63423F421B150A5F006CF63C /* Resources */ = {
 			isa = PBXResourcesBuildPhase;
 			buildActionMask = 2147483647;
@@ -555,6 +627,21 @@
 /* End PBXResourcesBuildPhase section */
 
 /* Begin PBXShellScriptBuildPhase section */
+		31F8D1C407195CBF0C02929B /* [CP] Embed Pods Frameworks */ = {
+			isa = PBXShellScriptBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			inputPaths = (
+			);
+			name = "[CP] Embed Pods Frameworks";
+			outputPaths = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+			shellPath = /bin/sh;
+			shellScript = "\"${SRCROOT}/Pods/Target Support Files/Pods-InteropTestsRemoteWithCronet/Pods-InteropTestsRemoteWithCronet-frameworks.sh\"\n";
+			showEnvVarsInLog = 0;
+		};
 		4C406327D3907A5E5FBA8AC9 /* [CP] Check Pods Manifest.lock */ = {
 			isa = PBXShellScriptBuildPhase;
 			buildActionMask = 2147483647;
@@ -780,6 +867,21 @@
 			shellScript = "diff \"${PODS_ROOT}/../Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [[ $? != 0 ]] ; then\n    cat << EOM\nerror: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\nEOM\n    exit 1\nfi\n";
 			showEnvVarsInLog = 0;
 		};
+		C0F7B1FF6F88CC5FBF362F4C /* [CP] Check Pods Manifest.lock */ = {
+			isa = PBXShellScriptBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			inputPaths = (
+			);
+			name = "[CP] Check Pods Manifest.lock";
+			outputPaths = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+			shellPath = /bin/sh;
+			shellScript = "diff \"${PODS_ROOT}/../Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [[ $? != 0 ]] ; then\n    cat << EOM\nerror: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\nEOM\n    exit 1\nfi\n";
+			showEnvVarsInLog = 0;
+		};
 		C2E09DC4BD239F71160F0CC1 /* [CP] Copy Pods Resources */ = {
 			isa = PBXShellScriptBuildPhase;
 			buildActionMask = 2147483647;
@@ -825,6 +927,21 @@
 			shellScript = "\"${SRCROOT}/Pods/Target Support Files/Pods-RxLibraryUnitTests/Pods-RxLibraryUnitTests-resources.sh\"\n";
 			showEnvVarsInLog = 0;
 		};
+		DB4D0E73C229F2FF3B364AB3 /* [CP] Copy Pods Resources */ = {
+			isa = PBXShellScriptBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			inputPaths = (
+			);
+			name = "[CP] Copy Pods Resources";
+			outputPaths = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+			shellPath = /bin/sh;
+			shellScript = "\"${SRCROOT}/Pods/Target Support Files/Pods-InteropTestsRemoteWithCronet/Pods-InteropTestsRemoteWithCronet-resources.sh\"\n";
+			showEnvVarsInLog = 0;
+		};
 		E63468C760D0724F18861822 /* [CP] Embed Pods Frameworks */ = {
 			isa = PBXShellScriptBuildPhase;
 			buildActionMask = 2147483647;
@@ -866,6 +983,15 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
+		5EE84BED1D4717E40050C6CC /* Sources */ = {
+			isa = PBXSourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				5EE84BFE1D471D400050C6CC /* InteropTests.m in Sources */,
+				5EE84BF41D4717E40050C6CC /* InteropTestsRemoteWithCronet.m in Sources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 		63423F401B150A5F006CF63C /* Sources */ = {
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
@@ -931,6 +1057,11 @@
 			target = 635697C61B14FC11007A7283 /* Tests */;
 			targetProxy = 5E8A5DAA1D3840B4000F8BC4 /* PBXContainerItemProxy */;
 		};
+		5EE84BF81D4717E40050C6CC /* PBXTargetDependency */ = {
+			isa = PBXTargetDependency;
+			target = 635697C61B14FC11007A7283 /* Tests */;
+			targetProxy = 5EE84BF71D4717E40050C6CC /* PBXContainerItemProxy */;
+		};
 		63423F4C1B150A5F006CF63C /* PBXTargetDependency */ = {
 			isa = PBXTargetDependency;
 			target = 635697C61B14FC11007A7283 /* Tests */;
@@ -991,6 +1122,50 @@
 			};
 			name = Release;
 		};
+		5EE84BF91D4717E40050C6CC /* Debug */ = {
+			isa = XCBuildConfiguration;
+			baseConfigurationReference = 17F60BF2871F6AF85FB3FA12 /* Pods-InteropTestsRemoteWithCronet.debug.xcconfig */;
+			buildSettings = {
+				CLANG_ANALYZER_NONNULL = YES;
+				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
+				DEBUG_INFORMATION_FORMAT = dwarf;
+				ENABLE_TESTABILITY = YES;
+				GCC_PREPROCESSOR_DEFINITIONS = (
+					"$(inherited)",
+					"COCOAPODS=1",
+					"$(inherited)",
+					"GPB_USE_PROTOBUF_FRAMEWORK_IMPORTS=1",
+					"GRPC_COMPILE_WITH_CRONET=1",
+				);
+				INFOPLIST_FILE = InteropTestsRemoteWithCronet/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 9.3;
+				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
+				PRODUCT_BUNDLE_IDENTIFIER = io.grpc.InteropTestsRemoteWithCronet;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+			};
+			name = Debug;
+		};
+		5EE84BFA1D4717E40050C6CC /* Release */ = {
+			isa = XCBuildConfiguration;
+			baseConfigurationReference = AC414EF7A6BF76ED02B6E480 /* Pods-InteropTestsRemoteWithCronet.release.xcconfig */;
+			buildSettings = {
+				CLANG_ANALYZER_NONNULL = YES;
+				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
+				GCC_PREPROCESSOR_DEFINITIONS = (
+					"$(inherited)",
+					"COCOAPODS=1",
+					"$(inherited)",
+					"GPB_USE_PROTOBUF_FRAMEWORK_IMPORTS=1",
+					"GRPC_COMPILE_WITH_CRONET=1",
+				);
+				INFOPLIST_FILE = InteropTestsRemoteWithCronet/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 9.3;
+				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
+				PRODUCT_BUNDLE_IDENTIFIER = io.grpc.InteropTestsRemoteWithCronet;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+			};
+			name = Release;
+		};
 		63423F4E1B150A5F006CF63C /* Debug */ = {
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = B94C27C06733CF98CE1B2757 /* Pods-AllTests.debug.xcconfig */;
@@ -1239,6 +1414,15 @@
 			defaultConfigurationIsVisible = 0;
 			defaultConfigurationName = Release;
 		};
+		5EE84BFB1D4717E40050C6CC /* Build configuration list for PBXNativeTarget "InteropTestsRemoteWithCronet" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				5EE84BF91D4717E40050C6CC /* Debug */,
+				5EE84BFA1D4717E40050C6CC /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
 		63423F4D1B150A5F006CF63C /* Build configuration list for PBXNativeTarget "AllTests" */ = {
 			isa = XCConfigurationList;
 			buildConfigurations = (
diff --git a/src/objective-c/tests/Tests.xcodeproj/xcshareddata/xcschemes/InteropTestsRemoteWithCronet.xcscheme b/src/objective-c/tests/Tests.xcodeproj/xcshareddata/xcschemes/InteropTestsRemoteWithCronet.xcscheme
new file mode 100644
index 0000000000..6d92be8b3d
--- /dev/null
+++ b/src/objective-c/tests/Tests.xcodeproj/xcshareddata/xcschemes/InteropTestsRemoteWithCronet.xcscheme
@@ -0,0 +1,104 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "0730"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "NO"
+            buildForArchiving = "NO"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "5EE84BF01D4717E40050C6CC"
+               BuildableName = "InteropTestsRemoteWithCronet.xctest"
+               BlueprintName = "InteropTestsRemoteWithCronet"
+               ReferencedContainer = "container:Tests.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <Testables>
+         <TestableReference
+            skipped = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "5EE84BF01D4717E40050C6CC"
+               BuildableName = "InteropTestsRemoteWithCronet.xctest"
+               BlueprintName = "InteropTestsRemoteWithCronet"
+               ReferencedContainer = "container:Tests.xcodeproj">
+            </BuildableReference>
+            <SkippedTests>
+               <Test
+                  Identifier = "InteropTests">
+               </Test>
+            </SkippedTests>
+         </TestableReference>
+      </Testables>
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "5EE84BF01D4717E40050C6CC"
+            BuildableName = "InteropTestsRemoteWithCronet.xctest"
+            BlueprintName = "InteropTestsRemoteWithCronet"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "5EE84BF01D4717E40050C6CC"
+            BuildableName = "InteropTestsRemoteWithCronet.xctest"
+            BlueprintName = "InteropTestsRemoteWithCronet"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Release"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "5EE84BF01D4717E40050C6CC"
+            BuildableName = "InteropTestsRemoteWithCronet.xctest"
+            BlueprintName = "InteropTestsRemoteWithCronet"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>
diff --git a/src/php/README.md b/src/php/README.md
index 8abedc40a3..7e9819b256 100644
--- a/src/php/README.md
+++ b/src/php/README.md
@@ -9,23 +9,12 @@ GA
 
 ## Environment
 
-Prerequisite: `php` >=5.5, `phpize`, `pecl`, `phpunit`
-
-**Linux (Debian):**
-
-```sh
-$ sudo apt-get install php5 php5-dev php-pear
-```
-
-**Linux (CentOS):**
-
-```sh
-$ yum install php55w
-$ yum --enablerepo=remi,remi-php55 install php-devel php-pear
-```
-
-**Mac OS X:**
+Prerequisite:
+* `php` 5.5 or above, 7.0 or above
+* `pear` and `pecl`
+* `phpunit`
 
+**PEAR:**
 ```sh
 $ curl -O http://pear.php.net/go-pear.phar
 $ sudo php -d detect_unicode=0 go-pear.phar
@@ -72,13 +61,7 @@ $ sudo make install
 
 ### gRPC PHP extension
 
-Install the gRPC PHP extension from PECL
-
-```sh
-$ sudo pecl install grpc
-```
-
-Or, compile from source
+Compile the gRPC PHP extension
 
 ```sh
 $ cd grpc/src/php/ext/grpc
@@ -148,12 +131,8 @@ Alternatively, you can download `protoc` binaries from [the protocol buffers Git
 You need to install `protoc-gen-php` to generate stub class `.php` files from service definition `.proto` files.
 
 ```sh
-$ cd grpc/src/php/vendor/stanley-cheung/protobuf-php # if you had run `composer install` in the previous step
-
-OR
-
-$ git clone https://github.com/stanley-cheung/Protobuf-PHP # clone from github repo
-
+$ git clone https://github.com/stanley-cheung/Protobuf-PHP
+$ cd Protobuf-PHP
 $ gem install rake ronn
 $ rake pear:package version=1.0
 $ sudo pear install Protobuf-1.0.tgz
@@ -175,7 +154,7 @@ Run a local server serving the math services. Please see [Node][] for how to run
 ```sh
 $ cd grpc
 $ npm install
-$ nodejs src/node/test/math/math_server.js
+$ node src/node/test/math/math_server.js
 ```
 
 ### Run test client
@@ -212,7 +191,7 @@ Make sure the Node math server is still running, as above.
 ```sh
 $ cd grpc
 $ npm install
-$ nodejs src/node/test/math/math_server.js
+$ node src/node/test/math/math_server.js
 ```
 
 Make sure you have run `composer install` to generate the `vendor/autoload.php` file
@@ -282,7 +261,7 @@ Make sure the Node math server is still running, as above.
 ```sh
 $ cd grpc
 $ npm install
-$ nodejs src/node/test/math/math_server.js
+$ node src/node/test/math/math_server.js
 ```
 
 Make sure you have run `composer install` to generate the `vendor/autoload.php` file
diff --git a/src/php/composer.json b/src/php/composer.json
index 88418206e8..1eacc643a2 100644
--- a/src/php/composer.json
+++ b/src/php/composer.json
@@ -8,7 +8,9 @@
   "version": "1.0.0",
   "require": {
     "php": ">=5.5.0",
-    "stanley-cheung/protobuf-php": "v0.6",
+    "stanley-cheung/protobuf-php": "v0.6"
+  },
+  "require-dev": {
     "google/auth": "v0.9"
   },
   "autoload": {
diff --git a/src/php/ext/grpc/call.c b/src/php/ext/grpc/call.c
index d455002de6..66ca1513ed 100644
--- a/src/php/ext/grpc/call.c
+++ b/src/php/ext/grpc/call.c
@@ -58,66 +58,44 @@
 #include "byte_buffer.h"
 
 zend_class_entry *grpc_ce_call;
-
-#if PHP_MAJOR_VERSION < 7
+#if PHP_MAJOR_VERSION >= 7
+static zend_object_handlers call_ce_handlers;
+#endif
 
 /* Frees and destroys an instance of wrapped_grpc_call */
-void free_wrapped_grpc_call(void *object TSRMLS_DC) {
-  wrapped_grpc_call *call = (wrapped_grpc_call *)object;
-  if (call->owned && call->wrapped != NULL) {
-    grpc_call_destroy(call->wrapped);
+PHP_GRPC_FREE_WRAPPED_FUNC_START(wrapped_grpc_call)
+  if (p->owned && p->wrapped != NULL) {
+    grpc_call_destroy(p->wrapped);
   }
-  zend_object_std_dtor(&call->std TSRMLS_CC);
-  efree(call);
-}
+PHP_GRPC_FREE_WRAPPED_FUNC_END()
 
 /* Initializes an instance of wrapped_grpc_call to be associated with an object
  * of a class specified by class_type */
-zend_object_value create_wrapped_grpc_call(zend_class_entry *class_type
-                                               TSRMLS_DC) {
-  zend_object_value retval;
-  wrapped_grpc_call *intern;
-
-  intern = (wrapped_grpc_call *)emalloc(sizeof(wrapped_grpc_call));
-  memset(intern, 0, sizeof(wrapped_grpc_call));
-
+php_grpc_zend_object create_wrapped_grpc_call(zend_class_entry *class_type
+                                              TSRMLS_DC) {
+  PHP_GRPC_ALLOC_CLASS_OBJECT(wrapped_grpc_call);
   zend_object_std_init(&intern->std, class_type TSRMLS_CC);
   object_properties_init(&intern->std, class_type);
-  retval.handle = zend_objects_store_put(
-      intern, (zend_objects_store_dtor_t)zend_objects_destroy_object,
-      free_wrapped_grpc_call, NULL TSRMLS_CC);
-  retval.handlers = zend_get_std_object_handlers();
-  return retval;
-}
-
-/* Wraps a grpc_call struct in a PHP object. Owned indicates whether the struct
-   should be destroyed at the end of the object's lifecycle */
-zval *grpc_php_wrap_call(grpc_call *wrapped, bool owned TSRMLS_DC) {
-  zval *call_object;
-  MAKE_STD_ZVAL(call_object);
-  object_init_ex(call_object, grpc_ce_call);
-  wrapped_grpc_call *call =
-      (wrapped_grpc_call *)zend_object_store_get_object(call_object TSRMLS_CC);
-  call->wrapped = wrapped;
-  call->owned = owned;
-  return call_object;
+  PHP_GRPC_FREE_CLASS_OBJECT(wrapped_grpc_call, call_ce_handlers);
 }
 
 /* Creates and returns a PHP array object with the data in a
  * grpc_metadata_array. Returns NULL on failure */
-zval *grpc_parse_metadata_array(grpc_metadata_array *metadata_array TSRMLS_DC) {
+zval *grpc_parse_metadata_array(grpc_metadata_array
+                                *metadata_array TSRMLS_DC) {
   int count = metadata_array->count;
   grpc_metadata *elements = metadata_array->metadata;
-  int i;
   zval *array;
-  zval **data = NULL;
+  PHP_GRPC_MAKE_STD_ZVAL(array);
+  array_init(array);
+  int i;
   HashTable *array_hash;
   zval *inner_array;
   char *str_key;
   char *str_val;
   size_t key_len;
-  MAKE_STD_ZVAL(array);
-  array_init(array);
+  zval *data = NULL;
+
   array_hash = Z_ARRVAL_P(array);
   grpc_metadata *elem;
   for (i = 0; i < count; i++) {
@@ -127,9 +105,9 @@ zval *grpc_parse_metadata_array(grpc_metadata_array *metadata_array TSRMLS_DC) {
     memcpy(str_key, elem->key, key_len);
     str_val = ecalloc(elem->value_length + 1, sizeof(char));
     memcpy(str_val, elem->value, elem->value_length);
-    if (zend_hash_find(array_hash, str_key, key_len, (void **)data) ==
-        SUCCESS) {
-      if (Z_TYPE_P(*data) != IS_ARRAY) {
+    if (php_grpc_zend_hash_find(array_hash, str_key, key_len, (void **)&data)
+        == SUCCESS) {
+      if (Z_TYPE_P(data) != IS_ARRAY) {
         zend_throw_exception(zend_exception_get_default(TSRMLS_C),
                              "Metadata hash somehow contains wrong types.",
                              1 TSRMLS_CC);
@@ -137,11 +115,13 @@ zval *grpc_parse_metadata_array(grpc_metadata_array *metadata_array TSRMLS_DC) {
         efree(str_val);
         return NULL;
       }
-      add_next_index_stringl(*data, str_val, elem->value_length, false);
+      php_grpc_add_next_index_stringl(data, str_val, elem->value_length,
+                                      false);
     } else {
-      MAKE_STD_ZVAL(inner_array);
+      PHP_GRPC_MAKE_STD_ZVAL(inner_array);
       array_init(inner_array);
-      add_next_index_stringl(inner_array, str_val, elem->value_length, false);
+      php_grpc_add_next_index_stringl(inner_array, str_val,
+                                      elem->value_length, false);
       add_assoc_zval(array, str_key, inner_array);
     }
   }
@@ -151,185 +131,64 @@ zval *grpc_parse_metadata_array(grpc_metadata_array *metadata_array TSRMLS_DC) {
 /* Populates a grpc_metadata_array with the data in a PHP array object.
    Returns true on success and false on failure */
 bool create_metadata_array(zval *array, grpc_metadata_array *metadata) {
-  zval **inner_array;
-  zval **value;
   HashTable *array_hash;
-  HashPosition array_pointer;
   HashTable *inner_array_hash;
-  HashPosition inner_array_pointer;
-  char *key;
-  uint key_len;
-  ulong index;
-  if (Z_TYPE_P(array) != IS_ARRAY) {
-    return false;
-  }
-  grpc_metadata_array_init(metadata);
-  array_hash = Z_ARRVAL_P(array);
-  for (zend_hash_internal_pointer_reset_ex(array_hash, &array_pointer);
-       zend_hash_get_current_data_ex(array_hash, (void**)&inner_array,
-                                     &array_pointer) == SUCCESS;
-       zend_hash_move_forward_ex(array_hash, &array_pointer)) {
-    if (zend_hash_get_current_key_ex(array_hash, &key, &key_len, &index, 0,
-                                     &array_pointer) != HASH_KEY_IS_STRING) {
-      return false;
-    }
-    if (Z_TYPE_P(*inner_array) != IS_ARRAY) {
-      return false;
-    }
-    inner_array_hash = Z_ARRVAL_P(*inner_array);
-    metadata->capacity += zend_hash_num_elements(inner_array_hash);
-  }
-  metadata->metadata = gpr_malloc(metadata->capacity * sizeof(grpc_metadata));
-  for (zend_hash_internal_pointer_reset_ex(array_hash, &array_pointer);
-       zend_hash_get_current_data_ex(array_hash, (void**)&inner_array,
-                                     &array_pointer) == SUCCESS;
-       zend_hash_move_forward_ex(array_hash, &array_pointer)) {
-    if (zend_hash_get_current_key_ex(array_hash, &key, &key_len, &index, 0,
-                                     &array_pointer) != HASH_KEY_IS_STRING) {
-      return false;
-    }
-    inner_array_hash = Z_ARRVAL_P(*inner_array);
-    for (zend_hash_internal_pointer_reset_ex(inner_array_hash,
-                                             &inner_array_pointer);
-         zend_hash_get_current_data_ex(inner_array_hash, (void**)&value,
-                                       &inner_array_pointer) == SUCCESS;
-         zend_hash_move_forward_ex(inner_array_hash, &inner_array_pointer)) {
-      if (Z_TYPE_P(*value) != IS_STRING) {
-        return false;
-      }
-      metadata->metadata[metadata->count].key = key;
-      metadata->metadata[metadata->count].value = Z_STRVAL_P(*value);
-      metadata->metadata[metadata->count].value_length = Z_STRLEN_P(*value);
-      metadata->count += 1;
-    }
-  }
-  return true;
-}
-
-#else
-
-static zend_object_handlers call_ce_handlers;
-
-/* Frees and destroys an instance of wrapped_grpc_call */
-static void free_wrapped_grpc_call(zend_object *object) {
-  wrapped_grpc_call *call = wrapped_grpc_call_from_obj(object);
-  if (call->owned && call->wrapped != NULL) {
-    grpc_call_destroy(call->wrapped);
-  }
-  zend_object_std_dtor(&call->std);
-}
-
-/* Initializes an instance of wrapped_grpc_call to be associated with an
- * object of a class specified by class_type */
-zend_object *create_wrapped_grpc_call(zend_class_entry *class_type) {
-  wrapped_grpc_call *intern;
-  intern = ecalloc(1, sizeof(wrapped_grpc_call) +
-                   zend_object_properties_size(class_type));
-  zend_object_std_init(&intern->std, class_type);
-  object_properties_init(&intern->std, class_type);
-  intern->std.handlers = &call_ce_handlers;
-  return &intern->std;
-}
-
-/* Wraps a grpc_call struct in a PHP object. Owned indicates whether the
-   struct should be destroyed at the end of the object's lifecycle */
-void grpc_php_wrap_call(grpc_call *wrapped, bool owned, zval *call_object) {
-  object_init_ex(call_object, grpc_ce_call);
-  wrapped_grpc_call *call = Z_WRAPPED_GRPC_CALL_P(call_object);
-  call->wrapped = wrapped;
-  call->owned = owned;
-}
-
-/* Creates and returns a PHP array object with the data in a
- * grpc_metadata_array. Returns NULL on failure */
-void grpc_parse_metadata_array(grpc_metadata_array *metadata_array,
-                               zval *array) {
-  int count = metadata_array->count;
-  grpc_metadata *elements = metadata_array->metadata;
-  int i;
-  zval *data;
-  HashTable *array_hash;
-  zval inner_array;
-  char *str_key;
-  char *str_val;
-  size_t key_len;
-
-  array_init(array);
-  array_hash = HASH_OF(array);
-  grpc_metadata *elem;
-  for (i = 0; i < count; i++) {
-    elem = &elements[i];
-    key_len = strlen(elem->key);
-    str_key = ecalloc(key_len + 1, sizeof(char));
-    memcpy(str_key, elem->key, key_len);
-    str_val = ecalloc(elem->value_length + 1, sizeof(char));
-    memcpy(str_val, elem->value, elem->value_length);
-    if ((data = zend_hash_str_find(array_hash, str_key, key_len)) != NULL) {
-      if (Z_TYPE_P(data) != IS_ARRAY) {
-        zend_throw_exception(zend_exception_get_default(),
-                             "Metadata hash somehow contains wrong types.",
-                             1);
-        efree(str_key);
-        efree(str_val);
-        return;
-      }
-      add_next_index_stringl(data, str_val, elem->value_length);
-    } else {
-      array_init(&inner_array);
-      add_next_index_stringl(&inner_array, str_val, elem->value_length);
-      add_assoc_zval(array, str_key, &inner_array);
-    }
-  }
-}
-
-/* Populates a grpc_metadata_array with the data in a PHP array object.
-   Returns true on success and false on failure */
-bool create_metadata_array(zval *array, grpc_metadata_array *metadata) {
-  zval *inner_array;
   zval *value;
-  HashTable *array_hash;
-  HashTable *inner_array_hash;
-  zend_string *key;
+  zval *inner_array;
   if (Z_TYPE_P(array) != IS_ARRAY) {
     return false;
   }
   grpc_metadata_array_init(metadata);
-  array_hash = HASH_OF(array);
+  array_hash = Z_ARRVAL_P(array);
 
-  ZEND_HASH_FOREACH_STR_KEY_VAL(array_hash, key, inner_array) {
-    if (key == NULL) {
+  char *key;
+  int key_type;
+  PHP_GRPC_HASH_FOREACH_STR_KEY_VAL_START(array_hash, key, key_type,
+                                          inner_array)
+    if (key_type != HASH_KEY_IS_STRING || key == NULL) {
       return false;
     }
     if (Z_TYPE_P(inner_array) != IS_ARRAY) {
       return false;
     }
-    inner_array_hash = HASH_OF(inner_array);
+    inner_array_hash = Z_ARRVAL_P(inner_array);
     metadata->capacity += zend_hash_num_elements(inner_array_hash);
-  }
-  ZEND_HASH_FOREACH_END();
+  PHP_GRPC_HASH_FOREACH_END()
 
   metadata->metadata = gpr_malloc(metadata->capacity * sizeof(grpc_metadata));
 
-  ZEND_HASH_FOREACH_STR_KEY_VAL(array_hash, key, inner_array) {
-    if (key == NULL) {
+  char *key1 = NULL;
+  int key_type1;
+  PHP_GRPC_HASH_FOREACH_STR_KEY_VAL_START(array_hash, key1, key_type1,
+                                          inner_array)
+    if (key_type1 != HASH_KEY_IS_STRING) {
       return false;
     }
-    inner_array_hash = HASH_OF(inner_array);
-
-    ZEND_HASH_FOREACH_VAL(inner_array_hash, value) {
+    inner_array_hash = Z_ARRVAL_P(inner_array);
+    PHP_GRPC_HASH_FOREACH_VAL_START(inner_array_hash, value)
       if (Z_TYPE_P(value) != IS_STRING) {
         return false;
       }
-      metadata->metadata[metadata->count].key = ZSTR_VAL(key);
+      metadata->metadata[metadata->count].key = key1;
       metadata->metadata[metadata->count].value = Z_STRVAL_P(value);
       metadata->metadata[metadata->count].value_length = Z_STRLEN_P(value);
       metadata->count += 1;
-    } ZEND_HASH_FOREACH_END();
-  } ZEND_HASH_FOREACH_END();
+    PHP_GRPC_HASH_FOREACH_END()
+  PHP_GRPC_HASH_FOREACH_END()
   return true;
 }
 
-#endif
+/* Wraps a grpc_call struct in a PHP object. Owned indicates whether the
+   struct should be destroyed at the end of the object's lifecycle */
+zval *grpc_php_wrap_call(grpc_call *wrapped, bool owned TSRMLS_DC) {
+  zval *call_object;
+  PHP_GRPC_MAKE_STD_ZVAL(call_object);
+  object_init_ex(call_object, grpc_ce_call);
+  wrapped_grpc_call *call = Z_WRAPPED_GRPC_CALL_P(call_object);
+  call->wrapped = wrapped;
+  call->owned = owned;
+  return call_object;
+}
 
 /**
  * Constructs a new instance of the Call class.
@@ -379,29 +238,17 @@ PHP_METHOD(Call, __construct) {
  * @return object Object with results of all actions
  */
 PHP_METHOD(Call, startBatch) {
-#if PHP_MAJOR_VERSION < 7
-  zval **value;
-  zval **inner_value;
-  HashPosition array_pointer;
-  zval **message_value;
-  zval **message_flags;
-  char *key;
-  uint key_len;
-  ulong index;
   zval *result;
-  zval *recv_status;
-  MAKE_STD_ZVAL(result);
+  PHP_GRPC_MAKE_STD_ZVAL(result);
   object_init(result);
-#else
+  php_grpc_ulong index;
+  zval *recv_status;
+  PHP_GRPC_MAKE_STD_ZVAL(recv_status);
+  object_init(recv_status);
   zval *value;
   zval *inner_value;
   zval *message_value;
   zval *message_flags;
-  zend_string *key;
-  zend_ulong index;
-  zval recv_status;
-  object_init(return_value);
-#endif
   wrapped_grpc_call *call = Z_WRAPPED_GRPC_CALL_P(getThis());
   
   grpc_op ops[8];
@@ -424,7 +271,6 @@ PHP_METHOD(Call, startBatch) {
   char *message_str;
   size_t message_len;
 
-
   grpc_metadata_array_init(&metadata);
   grpc_metadata_array_init(&trailing_metadata);
   grpc_metadata_array_init(&recv_metadata);
@@ -439,67 +285,63 @@ PHP_METHOD(Call, startBatch) {
     goto cleanup;
   }
 
-#if PHP_MAJOR_VERSION < 7
-
   array_hash = Z_ARRVAL_P(array);
-  for (zend_hash_internal_pointer_reset_ex(array_hash, &array_pointer);
-       zend_hash_get_current_data_ex(array_hash, (void**)&value,
-                                     &array_pointer) == SUCCESS;
-       zend_hash_move_forward_ex(array_hash, &array_pointer)) {
-    if (zend_hash_get_current_key_ex(array_hash, &key, &key_len, &index, 0,
-                                     &array_pointer) != HASH_KEY_IS_LONG) {
+
+  char *key = NULL;
+  int key_type;
+  PHP_GRPC_HASH_FOREACH_LONG_KEY_VAL_START(array_hash, key, key_type, index,
+                                           value)
+    if (key_type != HASH_KEY_IS_LONG || key != NULL) {
       zend_throw_exception(spl_ce_InvalidArgumentException,
                            "batch keys must be integers", 1 TSRMLS_CC);
       goto cleanup;
     }
     switch(index) {
     case GRPC_OP_SEND_INITIAL_METADATA:
-      if (!create_metadata_array(*value, &metadata)) {
+      if (!create_metadata_array(value, &metadata)) {
         zend_throw_exception(spl_ce_InvalidArgumentException,
                              "Bad metadata value given", 1 TSRMLS_CC);
         goto cleanup;
       }
-      ops[op_num].data.send_initial_metadata.count =
-          metadata.count;
-      ops[op_num].data.send_initial_metadata.metadata =
-          metadata.metadata;
+      ops[op_num].data.send_initial_metadata.count = metadata.count;
+      ops[op_num].data.send_initial_metadata.metadata = metadata.metadata;
       break;
     case GRPC_OP_SEND_MESSAGE:
-      if (Z_TYPE_PP(value) != IS_ARRAY) {
+      if (Z_TYPE_P(value) != IS_ARRAY) {
         zend_throw_exception(spl_ce_InvalidArgumentException,
                              "Expected an array for send message",
                              1 TSRMLS_CC);
         goto cleanup;
       }
-      message_hash = Z_ARRVAL_PP(value);
-      if (zend_hash_find(message_hash, "flags", sizeof("flags"),
+      message_hash = Z_ARRVAL_P(value);
+      if (php_grpc_zend_hash_find(message_hash, "flags", sizeof("flags"),
                          (void **)&message_flags) == SUCCESS) {
-        if (Z_TYPE_PP(message_flags) != IS_LONG) {
+        if (Z_TYPE_P(message_flags) != IS_LONG) {
           zend_throw_exception(spl_ce_InvalidArgumentException,
                                "Expected an int for message flags",
                                1 TSRMLS_CC);
         }
-        ops[op_num].flags = Z_LVAL_PP(message_flags) & GRPC_WRITE_USED_MASK;
+        ops[op_num].flags = Z_LVAL_P(message_flags) & GRPC_WRITE_USED_MASK;
       }
-      if (zend_hash_find(message_hash, "message", sizeof("message"),
+      if (php_grpc_zend_hash_find(message_hash, "message", sizeof("message"),
                          (void **)&message_value) != SUCCESS ||
-          Z_TYPE_PP(message_value) != IS_STRING) {
+          Z_TYPE_P(message_value) != IS_STRING) {
         zend_throw_exception(spl_ce_InvalidArgumentException,
                              "Expected a string for send message",
                              1 TSRMLS_CC);
         goto cleanup;
       }
       ops[op_num].data.send_message =
-          string_to_byte_buffer(Z_STRVAL_PP(message_value),
-                                Z_STRLEN_PP(message_value));
+          string_to_byte_buffer(Z_STRVAL_P(message_value),
+                                Z_STRLEN_P(message_value));
       break;
     case GRPC_OP_SEND_CLOSE_FROM_CLIENT:
       break;
     case GRPC_OP_SEND_STATUS_FROM_SERVER:
-      status_hash = Z_ARRVAL_PP(value);
-      if (zend_hash_find(status_hash, "metadata", sizeof("metadata"),
+      status_hash = Z_ARRVAL_P(value);
+      if (php_grpc_zend_hash_find(status_hash, "metadata", sizeof("metadata"),
                          (void **)&inner_value) == SUCCESS) {
-        if (!create_metadata_array(*inner_value, &trailing_metadata)) {
+        if (!create_metadata_array(inner_value, &trailing_metadata)) {
           zend_throw_exception(spl_ce_InvalidArgumentException,
                                "Bad trailing metadata value given",
                                1 TSRMLS_CC);
@@ -510,32 +352,32 @@ PHP_METHOD(Call, startBatch) {
         ops[op_num].data.send_status_from_server.trailing_metadata_count =
             trailing_metadata.count;
       }
-      if (zend_hash_find(status_hash, "code", sizeof("code"),
+      if (php_grpc_zend_hash_find(status_hash, "code", sizeof("code"),
                          (void**)&inner_value) == SUCCESS) {
-        if (Z_TYPE_PP(inner_value) != IS_LONG) {
+        if (Z_TYPE_P(inner_value) != IS_LONG) {
           zend_throw_exception(spl_ce_InvalidArgumentException,
                                "Status code must be an integer",
                                1 TSRMLS_CC);
           goto cleanup;
         }
         ops[op_num].data.send_status_from_server.status =
-            Z_LVAL_PP(inner_value);
+            Z_LVAL_P(inner_value);
       } else {
         zend_throw_exception(spl_ce_InvalidArgumentException,
                              "Integer status code is required",
                              1 TSRMLS_CC);
         goto cleanup;
       }
-      if (zend_hash_find(status_hash, "details", sizeof("details"),
+      if (php_grpc_zend_hash_find(status_hash, "details", sizeof("details"),
                          (void**)&inner_value) == SUCCESS) {
-        if (Z_TYPE_PP(inner_value) != IS_STRING) {
+        if (Z_TYPE_P(inner_value) != IS_STRING) {
           zend_throw_exception(spl_ce_InvalidArgumentException,
                                "Status details must be a string",
                                1 TSRMLS_CC);
           goto cleanup;
         }
         ops[op_num].data.send_status_from_server.status_details =
-            Z_STRVAL_PP(inner_value);
+            Z_STRVAL_P(inner_value);
       } else {
         zend_throw_exception(spl_ce_InvalidArgumentException,
                              "String status details is required",
@@ -570,132 +412,7 @@ PHP_METHOD(Call, startBatch) {
     ops[op_num].flags = 0;
     ops[op_num].reserved = NULL;
     op_num++;
-  }
-
-#else
-
-array_hash = HASH_OF(array);
-  ZEND_HASH_FOREACH_KEY_VAL(array_hash, index, key, value) {
-    if (key) {
-      zend_throw_exception(spl_ce_InvalidArgumentException,
-                           "batch keys must be integers", 1);
-      goto cleanup;
-    }
-
-    switch(index) {
-    case GRPC_OP_SEND_INITIAL_METADATA:
-      if (!create_metadata_array(value, &metadata)) {
-        zend_throw_exception(spl_ce_InvalidArgumentException,
-                             "Bad metadata value given", 1);
-        goto cleanup;
-      }
-      ops[op_num].data.send_initial_metadata.count = metadata.count;
-      ops[op_num].data.send_initial_metadata.metadata = metadata.metadata;
-      break;
-    case GRPC_OP_SEND_MESSAGE:
-      if (Z_TYPE_P(value) != IS_ARRAY) {
-        zend_throw_exception(spl_ce_InvalidArgumentException,
-                             "Expected an array for send message", 1);
-        goto cleanup;
-      }
-      message_hash = HASH_OF(value);
-      if ((message_flags =
-           zend_hash_str_find(message_hash, "flags",
-                              sizeof("flags") - 1)) != NULL) {
-        if (Z_TYPE_P(message_flags) != IS_LONG) {
-          zend_throw_exception(spl_ce_InvalidArgumentException,
-                               "Expected an int for message flags", 1);
-        }
-        ops[op_num].flags = Z_LVAL_P(message_flags) & GRPC_WRITE_USED_MASK;
-      }
-      if ((message_value = zend_hash_str_find(message_hash, "message",
-                                              sizeof("message") - 1))
-          == NULL || Z_TYPE_P(message_value) != IS_STRING) {
-        zend_throw_exception(spl_ce_InvalidArgumentException,
-                             "Expected a string for send message", 1);
-        goto cleanup;
-      }
-      ops[op_num].data.send_message =
-        string_to_byte_buffer(Z_STRVAL_P(message_value),
-                              Z_STRLEN_P(message_value));
-      break;
-    case GRPC_OP_SEND_CLOSE_FROM_CLIENT:
-      break;
-    case GRPC_OP_SEND_STATUS_FROM_SERVER:
-      status_hash = HASH_OF(value);
-      if ((inner_value = zend_hash_str_find(status_hash, "metadata",
-                                            sizeof("metadata") - 1))
-          != NULL) {
-        if (!create_metadata_array(inner_value, &trailing_metadata)) {
-          zend_throw_exception(spl_ce_InvalidArgumentException,
-                               "Bad trailing metadata value given", 1);
-          goto cleanup;
-        }
-        ops[op_num].data.send_status_from_server.trailing_metadata =
-          trailing_metadata.metadata;
-        ops[op_num].data.send_status_from_server.trailing_metadata_count =
-          trailing_metadata.count;
-      }
-      if ((inner_value = zend_hash_str_find(status_hash, "code",
-                                            sizeof("code") - 1)) != NULL) {
-        if (Z_TYPE_P(inner_value) != IS_LONG) {
-          zend_throw_exception(spl_ce_InvalidArgumentException,
-                               "Status code must be an integer", 1);
-          goto cleanup;
-        }
-        ops[op_num].data.send_status_from_server.status =
-          Z_LVAL_P(inner_value);
-      } else {
-        zend_throw_exception(spl_ce_InvalidArgumentException,
-                             "Integer status code is required", 1);
-        goto cleanup;
-      }
-      if ((inner_value = zend_hash_str_find(status_hash, "details",
-                                            sizeof("details") - 1)) != NULL) {
-        if (Z_TYPE_P(inner_value) != IS_STRING) {
-          zend_throw_exception(spl_ce_InvalidArgumentException,
-                               "Status details must be a string", 1);
-          goto cleanup;
-        }
-        ops[op_num].data.send_status_from_server.status_details =
-          Z_STRVAL_P(inner_value);
-      } else {
-        zend_throw_exception(spl_ce_InvalidArgumentException,
-                             "String status details is required", 1);
-        goto cleanup;
-      }
-      break;
-    case GRPC_OP_RECV_INITIAL_METADATA:
-      ops[op_num].data.recv_initial_metadata = &recv_metadata;
-      break;
-    case GRPC_OP_RECV_MESSAGE:
-      ops[op_num].data.recv_message = &message;
-      break;
-    case GRPC_OP_RECV_STATUS_ON_CLIENT:
-      ops[op_num].data.recv_status_on_client.trailing_metadata =
-        &recv_trailing_metadata;
-      ops[op_num].data.recv_status_on_client.status = &status;
-      ops[op_num].data.recv_status_on_client.status_details =
-        &status_details;
-      ops[op_num].data.recv_status_on_client.status_details_capacity =
-        &status_details_capacity;
-      break;
-    case GRPC_OP_RECV_CLOSE_ON_SERVER:
-      ops[op_num].data.recv_close_on_server.cancelled = &cancelled;
-      break;
-    default:
-      zend_throw_exception(spl_ce_InvalidArgumentException,
-                           "Unrecognized key in batch", 1);
-      goto cleanup;
-    }
-    ops[op_num].op = (grpc_op_type)index;
-    ops[op_num].flags = 0;
-    ops[op_num].reserved = NULL;
-    op_num++;
-  }
-  ZEND_HASH_FOREACH_END();
-
-#endif
+  PHP_GRPC_HASH_FOREACH_END()
 
   error = grpc_call_start_batch(call->wrapped, ops, op_num, call->wrapped,
                                 NULL);
@@ -707,7 +424,9 @@ array_hash = HASH_OF(array);
   }
   grpc_completion_queue_pluck(completion_queue, call->wrapped,
                               gpr_inf_future(GPR_CLOCK_REALTIME), NULL);
-#if PHP_MAJOR_VERSION < 7
+#if PHP_MAJOR_VERSION >= 7
+  zval recv_md;
+#endif
   for (int i = 0; i < op_num; i++) {
     switch(ops[i].op) {
     case GRPC_OP_SEND_INITIAL_METADATA:
@@ -723,29 +442,38 @@ array_hash = HASH_OF(array);
       add_property_bool(result, "send_status", true);
       break;
     case GRPC_OP_RECV_INITIAL_METADATA:
+#if PHP_MAJOR_VERSION < 7
       array = grpc_parse_metadata_array(&recv_metadata TSRMLS_CC);
       add_property_zval(result, "metadata", array);
-      Z_DELREF_P(array);
+#else
+      recv_md = *grpc_parse_metadata_array(&recv_metadata);
+      add_property_zval(result, "metadata", &recv_md);
+#endif
+      PHP_GRPC_DELREF(array);
       break;
     case GRPC_OP_RECV_MESSAGE:
       byte_buffer_to_string(message, &message_str, &message_len);
       if (message_str == NULL) {
         add_property_null(result, "message");
       } else {
-        add_property_stringl(result, "message", message_str, message_len,
-                             false);
+        php_grpc_add_property_stringl(result, "message", message_str,
+                                      message_len, false);
       }
       break;
     case GRPC_OP_RECV_STATUS_ON_CLIENT:
-      MAKE_STD_ZVAL(recv_status);
-      object_init(recv_status);
+#if PHP_MAJOR_VERSION < 7
       array = grpc_parse_metadata_array(&recv_trailing_metadata TSRMLS_CC);
       add_property_zval(recv_status, "metadata", array);
-      Z_DELREF_P(array);
+#else
+      recv_md = *grpc_parse_metadata_array(&recv_trailing_metadata);
+      add_property_zval(recv_status, "metadata", &recv_md);
+#endif
+      PHP_GRPC_DELREF(array);
       add_property_long(recv_status, "code", status);
-      add_property_string(recv_status, "details", status_details, true);
+      php_grpc_add_property_string(recv_status, "details", status_details,
+                                   true);
       add_property_zval(result, "status", recv_status);
-      Z_DELREF_P(recv_status);
+      PHP_GRPC_DELREF(recv_status);
       break;
     case GRPC_OP_RECV_CLOSE_ON_SERVER:
       add_property_bool(result, "cancelled", cancelled);
@@ -754,50 +482,6 @@ array_hash = HASH_OF(array);
       break;
     }
   }
-#else
-  for (int i = 0; i < op_num; i++) {
-    switch(ops[i].op) {
-    case GRPC_OP_SEND_INITIAL_METADATA:
-      add_property_bool(return_value, "send_metadata", true);
-      break;
-    case GRPC_OP_SEND_MESSAGE:
-      add_property_bool(return_value, "send_message", true);
-      break;
-    case GRPC_OP_SEND_CLOSE_FROM_CLIENT:
-      add_property_bool(return_value, "send_close", true);
-      break;
-    case GRPC_OP_SEND_STATUS_FROM_SERVER:
-      add_property_bool(return_value, "send_status", true);
-      break;
-    case GRPC_OP_RECV_INITIAL_METADATA:
-      grpc_parse_metadata_array(&recv_metadata, array);
-      add_property_zval(return_value, "metadata", array);
-      break;
-    case GRPC_OP_RECV_MESSAGE:
-      byte_buffer_to_string(message, &message_str, &message_len);
-      if (message_str == NULL) {
-        add_property_null(return_value, "message");
-      } else {
-        add_property_stringl(return_value, "message", message_str,
-                             message_len);
-      }
-      break;
-    case GRPC_OP_RECV_STATUS_ON_CLIENT:
-      object_init(&recv_status);
-      grpc_parse_metadata_array(&recv_trailing_metadata, array);
-      add_property_zval(&recv_status, "metadata", array);
-      add_property_long(&recv_status, "code", status);
-      add_property_string(&recv_status, "details", status_details);
-      add_property_zval(return_value, "status", &recv_status);
-      break;
-    case GRPC_OP_RECV_CLOSE_ON_SERVER:
-      add_property_bool(return_value, "cancelled", cancelled);
-      break;
-    default:
-      break;
-    }
-  }
-#endif
 
 cleanup:
   grpc_metadata_array_destroy(&metadata);
@@ -815,11 +499,7 @@ cleanup:
       grpc_byte_buffer_destroy(message);
     }
   }
-#if PHP_MAJOR_VERSION < 7
   RETURN_DESTROY_ZVAL(result);
-#else
-  RETURN_DESTROY_ZVAL(return_value);
-#endif
 }
 
 /**
@@ -880,10 +560,5 @@ void grpc_init_call(TSRMLS_D) {
   INIT_CLASS_ENTRY(ce, "Grpc\\Call", call_methods);
   ce.create_object = create_wrapped_grpc_call;
   grpc_ce_call = zend_register_internal_class(&ce TSRMLS_CC);
-#if PHP_MAJOR_VERSION >= 7
-  memcpy(&call_ce_handlers, zend_get_std_object_handlers(),
-         sizeof(zend_object_handlers));
-  call_ce_handlers.offset = XtOffsetOf(wrapped_grpc_call, std);
-  call_ce_handlers.free_obj = free_wrapped_grpc_call;
-#endif
+  PHP_GRPC_INIT_HANDLER(wrapped_grpc_call, call_ce_handlers);
 }
diff --git a/src/php/ext/grpc/call.h b/src/php/ext/grpc/call.h
index 4931bf392e..e49f9b382a 100644
--- a/src/php/ext/grpc/call.h
+++ b/src/php/ext/grpc/call.h
@@ -48,34 +48,19 @@
 /* Class entry for the Call PHP class */
 extern zend_class_entry *grpc_ce_call;
 
-#if PHP_MAJOR_VERSION < 7
-
 /* Wrapper struct for grpc_call that can be associated with a PHP object */
-typedef struct wrapped_grpc_call {
-  zend_object std;
+PHP_GRPC_WRAP_OBJECT_START(wrapped_grpc_call)
   bool owned;
   grpc_call *wrapped;
-} wrapped_grpc_call;
-
-/* Creates a Call object that wraps the given grpc_call struct */
-zval *grpc_php_wrap_call(grpc_call *wrapped, bool owned TSRMLS_DC);
+PHP_GRPC_WRAP_OBJECT_END(wrapped_grpc_call)
 
-/* Creates and returns a PHP associative array of metadata from a C array of
- * call metadata */
-zval *grpc_parse_metadata_array(grpc_metadata_array *metadata_array TSRMLS_DC);
+#if PHP_MAJOR_VERSION < 7
 
 #define Z_WRAPPED_GRPC_CALL_P(zv) \
   (wrapped_grpc_call *)zend_object_store_get_object(zv TSRMLS_CC)
 
 #else
 
-/* Wrapper struct for grpc_call that can be associated with a PHP object */
-typedef struct wrapped_grpc_call {
-  bool owned;
-  grpc_call *wrapped;
-  zend_object std;
-} wrapped_grpc_call;
-
 static inline wrapped_grpc_call
 *wrapped_grpc_call_from_obj(zend_object *obj) {
   return (wrapped_grpc_call*)((char*)(obj) -
@@ -84,15 +69,14 @@ static inline wrapped_grpc_call
 
 #define Z_WRAPPED_GRPC_CALL_P(zv) wrapped_grpc_call_from_obj(Z_OBJ_P((zv)))
 
-/* Creates a Call object that wraps the given grpc_call struct */
-void grpc_php_wrap_call(grpc_call *wrapped, bool owned, zval *call_object);
+#endif /* PHP_MAJOR_VERSION */
 
 /* Creates and returns a PHP associative array of metadata from a C array of
  * call metadata */
-void grpc_parse_metadata_array(grpc_metadata_array *metadata_array,
-                               zval *array);
+zval *grpc_parse_metadata_array(grpc_metadata_array *metadata_array TSRMLS_DC);
 
-#endif /* PHP_MAJOR_VERSION */
+/* Creates a Call object that wraps the given grpc_call struct */
+zval *grpc_php_wrap_call(grpc_call *wrapped, bool owned TSRMLS_DC);
 
 /* Initializes the Call PHP class */
 void grpc_init_call(TSRMLS_D);
diff --git a/src/php/ext/grpc/call_credentials.c b/src/php/ext/grpc/call_credentials.c
index 24ee0a465e..6921a5df17 100644
--- a/src/php/ext/grpc/call_credentials.c
+++ b/src/php/ext/grpc/call_credentials.c
@@ -52,88 +52,39 @@
 #include <grpc/grpc_security.h>
 
 zend_class_entry *grpc_ce_call_credentials;
-
-#if PHP_MAJOR_VERSION < 7
+#if PHP_MAJOR_VERSION >= 7
+static zend_object_handlers call_credentials_ce_handlers;
+#endif
 
 /* Frees and destroys an instance of wrapped_grpc_call_credentials */
-void free_wrapped_grpc_call_credentials(void *object TSRMLS_DC) {
-  wrapped_grpc_call_credentials *creds =
-      (wrapped_grpc_call_credentials *)object;
-  if (creds->wrapped != NULL) {
-    grpc_call_credentials_release(creds->wrapped);
+PHP_GRPC_FREE_WRAPPED_FUNC_START(wrapped_grpc_call_credentials)
+  if (p->wrapped != NULL) {
+    grpc_call_credentials_release(p->wrapped);
   }
-  zend_object_std_dtor(&creds->std TSRMLS_CC);
-  efree(creds);
-}
+PHP_GRPC_FREE_WRAPPED_FUNC_END()
 
 /* Initializes an instance of wrapped_grpc_call_credentials to be
  * associated with an object of a class specified by class_type */
-zend_object_value create_wrapped_grpc_call_credentials(
+php_grpc_zend_object create_wrapped_grpc_call_credentials(
     zend_class_entry *class_type TSRMLS_DC) {
-  zend_object_value retval;
-  wrapped_grpc_call_credentials *intern;
-
-  intern = (wrapped_grpc_call_credentials *)emalloc(
-      sizeof(wrapped_grpc_call_credentials));
-  memset(intern, 0, sizeof(wrapped_grpc_call_credentials));
-
+  PHP_GRPC_ALLOC_CLASS_OBJECT(wrapped_grpc_call_credentials);
   zend_object_std_init(&intern->std, class_type TSRMLS_CC);
   object_properties_init(&intern->std, class_type);
-  retval.handle = zend_objects_store_put(
-      intern, (zend_objects_store_dtor_t)zend_objects_destroy_object,
-      free_wrapped_grpc_call_credentials, NULL TSRMLS_CC);
-  retval.handlers = zend_get_std_object_handlers();
-  return retval;
+  PHP_GRPC_FREE_CLASS_OBJECT(wrapped_grpc_call_credentials,
+                             call_credentials_ce_handlers);
 }
 
-zval *grpc_php_wrap_call_credentials(grpc_call_credentials *wrapped TSRMLS_DC) {
+zval *grpc_php_wrap_call_credentials(grpc_call_credentials
+                                     *wrapped TSRMLS_DC) {
   zval *credentials_object;
-  MAKE_STD_ZVAL(credentials_object);
-  object_init_ex(credentials_object, grpc_ce_call_credentials);
-  wrapped_grpc_call_credentials *credentials =
-      (wrapped_grpc_call_credentials *)zend_object_store_get_object(
-          credentials_object TSRMLS_CC);
-  credentials->wrapped = wrapped;
-  return credentials_object;
-}
-
-#else
-
-static zend_object_handlers call_credentials_ce_handlers;
-
-/* Frees and destroys an instance of wrapped_grpc_call_credentials */
-static void free_wrapped_grpc_call_credentials(zend_object *object) {
-  wrapped_grpc_call_credentials *creds =
-    wrapped_grpc_call_creds_from_obj(object);
-  if (creds->wrapped != NULL) {
-    grpc_call_credentials_release(creds->wrapped);
-  }
-  zend_object_std_dtor(&creds->std);
-}
-
-/* Initializes an instance of wrapped_grpc_call_credentials to be
- * associated with an object of a class specified by class_type */
-zend_object *create_wrapped_grpc_call_credentials(zend_class_entry
-                                                  *class_type) {
-  wrapped_grpc_call_credentials *intern;
-  intern = ecalloc(1, sizeof(wrapped_grpc_call_credentials) +
-                   zend_object_properties_size(class_type));
-  zend_object_std_init(&intern->std, class_type);
-  object_properties_init(&intern->std, class_type);
-  intern->std.handlers = &call_credentials_ce_handlers;
-  return &intern->std;
-}
-
-void grpc_php_wrap_call_credentials(grpc_call_credentials *wrapped,
-                                    zval *credentials_object) {
+  PHP_GRPC_MAKE_STD_ZVAL(credentials_object);
   object_init_ex(credentials_object, grpc_ce_call_credentials);
   wrapped_grpc_call_credentials *credentials =
     Z_WRAPPED_GRPC_CALL_CREDS_P(credentials_object);
   credentials->wrapped = wrapped;
+  return credentials_object;
 }
 
-#endif
-
 /**
  * Create composite credentials from two existing credentials.
  * @param CallCredentials cred1 The first credential
@@ -160,13 +111,10 @@ PHP_METHOD(CallCredentials, createComposite) {
   grpc_call_credentials *creds =
       grpc_composite_call_credentials_create(cred1->wrapped, cred2->wrapped,
                                              NULL);
-#if PHP_MAJOR_VERSION < 7
-  zval *creds_object = grpc_php_wrap_call_credentials(creds TSRMLS_CC);
+  zval *creds_object;
+  PHP_GRPC_MAKE_STD_ZVAL(creds_object);
+  creds_object = grpc_php_wrap_call_credentials(creds TSRMLS_CC);
   RETURN_DESTROY_ZVAL(creds_object);
-#else
-  grpc_php_wrap_call_credentials(creds, return_value);
-  RETURN_DESTROY_ZVAL(return_value);
-#endif
 }
 
 /**
@@ -207,13 +155,10 @@ PHP_METHOD(CallCredentials, createFromPlugin) {
 
   grpc_call_credentials *creds =
     grpc_metadata_credentials_create_from_plugin(plugin, NULL);
-#if PHP_MAJOR_VERSION < 7
-  zval *creds_object = grpc_php_wrap_call_credentials(creds TSRMLS_CC);
+  zval *creds_object;
+  PHP_GRPC_MAKE_STD_ZVAL(creds_object);
+  creds_object = grpc_php_wrap_call_credentials(creds TSRMLS_CC);
   RETURN_DESTROY_ZVAL(creds_object);
-#else
-  grpc_php_wrap_call_credentials(creds, return_value);
-  RETURN_DESTROY_ZVAL(return_value);
-#endif
 }
 
 /* Callback function for plugin creds API */
@@ -226,37 +171,28 @@ void plugin_get_metadata(void *ptr, grpc_auth_metadata_context context,
 
   /* prepare to call the user callback function with info from the
    * grpc_auth_metadata_context */
-#if PHP_MAJOR_VERSION < 7
-  zval **params[1];
   zval *arg;
-  zval *retval;
-  MAKE_STD_ZVAL(arg);
+  PHP_GRPC_MAKE_STD_ZVAL(arg);
   object_init(arg);
-  add_property_string(arg, "service_url", context.service_url, true);
-  add_property_string(arg, "method_name", context.method_name, true);
+  php_grpc_add_property_string(arg, "service_url", context.service_url, true);
+  php_grpc_add_property_string(arg, "method_name", context.method_name, true);
+  zval *retval;
+  PHP_GRPC_MAKE_STD_ZVAL(retval);
+#if PHP_MAJOR_VERSION < 7
+  zval **params[1];
   params[0] = &arg;
-  state->fci->param_count = 1;
   state->fci->params = params;
   state->fci->retval_ptr_ptr = &retval;
 #else
-  zval arg;
-  zval retval;
-  object_init(&arg);
-  add_property_string(&arg, "service_url", context.service_url);
-  add_property_string(&arg, "method_name", context.method_name);
-  state->fci->param_count = 1;
-  state->fci->params = &arg;
-  state->fci->retval = &retval;
+  state->fci->params = arg;
+  state->fci->retval = retval;
 #endif
+  state->fci->param_count = 1;
 
   /* call the user callback function */
   zend_call_function(state->fci, state->fci_cache TSRMLS_CC);
 
-#if PHP_MAJOR_VERSION < 7
   if (Z_TYPE_P(retval) != IS_ARRAY) {
-#else
-  if (Z_TYPE_P(&retval) != IS_ARRAY) {
-#endif
     zend_throw_exception(spl_ce_InvalidArgumentException,
                          "plugin callback must return metadata array",
                          1 TSRMLS_CC);
@@ -264,11 +200,7 @@ void plugin_get_metadata(void *ptr, grpc_auth_metadata_context context,
   }
 
   grpc_metadata_array metadata;
-#if PHP_MAJOR_VERSION < 7
   if (!create_metadata_array(retval, &metadata)) {
-#else
-  if (!create_metadata_array(&retval, &metadata)) {
-#endif
     zend_throw_exception(spl_ce_InvalidArgumentException,
                          "invalid metadata", 1 TSRMLS_CC);
     grpc_metadata_array_destroy(&metadata);
@@ -303,13 +235,6 @@ void grpc_init_call_credentials(TSRMLS_D) {
   INIT_CLASS_ENTRY(ce, "Grpc\\CallCredentials", call_credentials_methods);
   ce.create_object = create_wrapped_grpc_call_credentials;
   grpc_ce_call_credentials = zend_register_internal_class(&ce TSRMLS_CC);
-#if PHP_MAJOR_VERSION >= 7
-  memcpy(&call_credentials_ce_handlers,
-         zend_get_std_object_handlers(),
-         sizeof(zend_object_handlers));
-  call_credentials_ce_handlers.offset =
-    XtOffsetOf(wrapped_grpc_call_credentials, std);
-  call_credentials_ce_handlers.free_obj =
-    free_wrapped_grpc_call_credentials;
-#endif
+  PHP_GRPC_INIT_HANDLER(wrapped_grpc_call_credentials,
+                        call_credentials_ce_handlers);
 }
diff --git a/src/php/ext/grpc/call_credentials.h b/src/php/ext/grpc/call_credentials.h
index e9688288de..c1d85c0fb2 100755
--- a/src/php/ext/grpc/call_credentials.h
+++ b/src/php/ext/grpc/call_credentials.h
@@ -49,36 +49,27 @@
 /* Class entry for the CallCredentials PHP class */
 extern zend_class_entry *grpc_ce_call_credentials;
 
-#if PHP_MAJOR_VERSION < 7
-
 /* Wrapper struct for grpc_call_credentials that can be associated
  * with a PHP object */
-typedef struct wrapped_grpc_call_credentials {
-  zend_object std;
+PHP_GRPC_WRAP_OBJECT_START(wrapped_grpc_call_credentials)
   grpc_call_credentials *wrapped;
-} wrapped_grpc_call_credentials;
+PHP_GRPC_WRAP_OBJECT_END(wrapped_grpc_call_credentials)
+
+#if PHP_MAJOR_VERSION < 7
 
 #define Z_WRAPPED_GRPC_CALL_CREDS_P(zv) \
   (wrapped_grpc_call_credentials *)zend_object_store_get_object(zv TSRMLS_CC)
-#else
 
-/* Wrapper struct for grpc_call_credentials that can be associated
- * with a PHP object */
-typedef struct wrapped_grpc_call_credentials {
-  grpc_call_credentials *wrapped;
-  zend_object std;
-} wrapped_grpc_call_credentials;
+#else
 
 static inline wrapped_grpc_call_credentials
-*wrapped_grpc_call_creds_from_obj(zend_object *obj) {
-  return
-    (wrapped_grpc_call_credentials*)((char*)(obj) -
-                                     XtOffsetOf(wrapped_grpc_call_credentials,
-                                                std));
+*wrapped_grpc_call_credentials_from_obj(zend_object *obj) {
+  return (wrapped_grpc_call_credentials*)(
+      (char*)(obj) - XtOffsetOf(wrapped_grpc_call_credentials, std));
 }
 
-#define Z_WRAPPED_GRPC_CALL_CREDS_P(zv)           \
-  wrapped_grpc_call_creds_from_obj(Z_OBJ_P((zv)))
+#define Z_WRAPPED_GRPC_CALL_CREDS_P(zv) \
+  wrapped_grpc_call_credentials_from_obj(Z_OBJ_P((zv)))
 
 #endif /* PHP_MAJOR_VERSION */
 
diff --git a/src/php/ext/grpc/channel.c b/src/php/ext/grpc/channel.c
index 085a51b560..b5a2c9f6ba 100644
--- a/src/php/ext/grpc/channel.c
+++ b/src/php/ext/grpc/channel.c
@@ -56,123 +56,52 @@
 #include "timeval.h"
 
 zend_class_entry *grpc_ce_channel;
-
-#if PHP_MAJOR_VERSION < 7
+#if PHP_MAJOR_VERSION >= 7
+static zend_object_handlers channel_ce_handlers;
+#endif
 
 /* Frees and destroys an instance of wrapped_grpc_channel */
-void free_wrapped_grpc_channel(void *object TSRMLS_DC) {
-  wrapped_grpc_channel *channel = (wrapped_grpc_channel *)object;
-  if (channel->wrapped != NULL) {
-    grpc_channel_destroy(channel->wrapped);
+PHP_GRPC_FREE_WRAPPED_FUNC_START(wrapped_grpc_channel)
+  if (p->wrapped != NULL) {
+    grpc_channel_destroy(p->wrapped);
   }
-  zend_object_std_dtor(&channel->std TSRMLS_CC);
-  efree(channel);
-}
+PHP_GRPC_FREE_WRAPPED_FUNC_END()
 
 /* Initializes an instance of wrapped_grpc_channel to be associated with an
  * object of a class specified by class_type */
-zend_object_value create_wrapped_grpc_channel(zend_class_entry *class_type
-                                                  TSRMLS_DC) {
-  zend_object_value retval;
-  wrapped_grpc_channel *intern;
-  intern = (wrapped_grpc_channel *)emalloc(sizeof(wrapped_grpc_channel));
-  memset(intern, 0, sizeof(wrapped_grpc_channel));
+php_grpc_zend_object create_wrapped_grpc_channel(zend_class_entry *class_type
+                                                 TSRMLS_DC) {
+  PHP_GRPC_ALLOC_CLASS_OBJECT(wrapped_grpc_channel);
   zend_object_std_init(&intern->std, class_type TSRMLS_CC);
   object_properties_init(&intern->std, class_type);
-  retval.handle = zend_objects_store_put(
-      intern, (zend_objects_store_dtor_t)zend_objects_destroy_object,
-      free_wrapped_grpc_channel, NULL TSRMLS_CC);
-  retval.handlers = zend_get_std_object_handlers();
-  return retval;
+  PHP_GRPC_FREE_CLASS_OBJECT(wrapped_grpc_channel, channel_ce_handlers);
 }
 
 void php_grpc_read_args_array(zval *args_array,
                               grpc_channel_args *args TSRMLS_DC) {
   HashTable *array_hash;
-  HashPosition array_pointer;
   int args_index;
-  zval **data;
-  char *key;
-  uint key_len;
-  ulong index;
   array_hash = Z_ARRVAL_P(args_array);
-  args->num_args = zend_hash_num_elements(array_hash);
-  args->args = ecalloc(args->num_args, sizeof(grpc_arg));
-  args_index = 0;
-  for (zend_hash_internal_pointer_reset_ex(array_hash, &array_pointer);
-       zend_hash_get_current_data_ex(array_hash, (void **)&data,
-                                     &array_pointer) == SUCCESS;
-       zend_hash_move_forward_ex(array_hash, &array_pointer)) {
-    if (zend_hash_get_current_key_ex(array_hash, &key, &key_len, &index, 0,
-                                     &array_pointer) != HASH_KEY_IS_STRING) {
-      zend_throw_exception(spl_ce_InvalidArgumentException,
-                           "args keys must be strings", 1 TSRMLS_CC);
-      return;
-    }
-    args->args[args_index].key = key;
-    switch (Z_TYPE_P(*data)) {
-    case IS_LONG:
-      args->args[args_index].value.integer = (int)Z_LVAL_P(*data);
-      args->args[args_index].type = GRPC_ARG_INTEGER;
-      break;
-    case IS_STRING:
-      args->args[args_index].value.string = Z_STRVAL_P(*data);
-      args->args[args_index].type = GRPC_ARG_STRING;
-      break;
-    default:
-      zend_throw_exception(spl_ce_InvalidArgumentException,
-                           "args values must be int or string", 1 TSRMLS_CC);
-      return;
-    }
-    args_index++;
-  }
-}
-
-#else
-
-static zend_object_handlers channel_ce_handlers;
-
-/* Frees and destroys an instance of wrapped_grpc_channel */
-static void free_wrapped_grpc_channel(zend_object *object) {
-  wrapped_grpc_channel *channel = wrapped_grpc_channel_from_obj(object);
-  if (channel->wrapped != NULL) {
-    grpc_channel_destroy(channel->wrapped);
-  }
-  zend_object_std_dtor(&channel->std);
-}
-
-/* Initializes an instance of wrapped_grpc_channel to be associated with an
- * object of a class specified by class_type */
-zend_object *create_wrapped_grpc_channel(zend_class_entry *class_type) {
-  wrapped_grpc_channel *intern;
-  intern = ecalloc(1, sizeof(wrapped_grpc_channel) +
-                   zend_object_properties_size(class_type));
-  zend_object_std_init(&intern->std, class_type);
-  object_properties_init(&intern->std, class_type);
-  intern->std.handlers = &channel_ce_handlers;
-  return &intern->std;
-}
-
-void php_grpc_read_args_array(zval *args_array, grpc_channel_args *args) {
-  HashTable *array_hash;
-  int args_index;
-  zval *data;
-  zend_string *key;
-  array_hash = HASH_OF(args_array);
   if (!array_hash) {
     zend_throw_exception(spl_ce_InvalidArgumentException,
-                         "array_hash is NULL", 1);
+                         "array_hash is NULL", 1 TSRMLS_CC);
     return;
   }
   args->num_args = zend_hash_num_elements(array_hash);
   args->args = ecalloc(args->num_args, sizeof(grpc_arg));
   args_index = 0;
-  ZEND_HASH_FOREACH_STR_KEY_VAL(array_hash, key, data) {
-    if (key == NULL) {
+
+  char *key = NULL;
+  zval *data;
+  int key_type;
+
+  PHP_GRPC_HASH_FOREACH_STR_KEY_VAL_START(array_hash, key, key_type, data)
+    if (key_type != HASH_KEY_IS_STRING) {
       zend_throw_exception(spl_ce_InvalidArgumentException,
-                           "args keys must be strings", 1);
+                           "args keys must be strings", 1 TSRMLS_CC);
+      return;
     }
-    args->args[args_index].key = ZSTR_VAL(key);
+    args->args[args_index].key = key;
     switch (Z_TYPE_P(data)) {
     case IS_LONG:
       args->args[args_index].value.integer = (int)Z_LVAL_P(data);
@@ -184,15 +113,13 @@ void php_grpc_read_args_array(zval *args_array, grpc_channel_args *args) {
       break;
     default:
       zend_throw_exception(spl_ce_InvalidArgumentException,
-                           "args values must be int or string", 1);
+                           "args values must be int or string", 1 TSRMLS_CC);
       return;
     }
     args_index++;
-  } ZEND_HASH_FOREACH_END();
+  PHP_GRPC_HASH_FOREACH_END()
 }
 
-#endif
-
 /**
  * Construct an instance of the Channel class. If the $args array contains a
  * "credentials" key mapping to a ChannelCredentials object, a secure channel
@@ -202,11 +129,7 @@ void php_grpc_read_args_array(zval *args_array, grpc_channel_args *args) {
  */
 PHP_METHOD(Channel, __construct) {
   wrapped_grpc_channel *channel = Z_WRAPPED_GRPC_CHANNEL_P(getThis());
-#if PHP_MAJOR_VERSION < 7
-  zval **creds_obj = NULL;
-#else
   zval *creds_obj = NULL;
-#endif
   char *target;
   php_grpc_int target_length;
   zval *args_array = NULL;
@@ -221,43 +144,23 @@ PHP_METHOD(Channel, __construct) {
                          "Channel expects a string and an array", 1 TSRMLS_CC);
     return;
   }
-#if PHP_MAJOR_VERSION < 7
   array_hash = Z_ARRVAL_P(args_array);
-  if (zend_hash_find(array_hash, "credentials", sizeof("credentials"),
+  if (php_grpc_zend_hash_find(array_hash, "credentials", sizeof("credentials"),
                      (void **)&creds_obj) == SUCCESS) {
-    if (Z_TYPE_P(*creds_obj) == IS_NULL) {
-      creds = NULL;
-      zend_hash_del(array_hash, "credentials", 12);
-    } else if (zend_get_class_entry(*creds_obj TSRMLS_CC) !=
-        grpc_ce_channel_credentials) {
-      zend_throw_exception(spl_ce_InvalidArgumentException,
-                           "credentials must be a ChannelCredentials object",
-                           1 TSRMLS_CC);
-      return;
-    } else {
-      creds = (wrapped_grpc_channel_credentials *)zend_object_store_get_object(
-          *creds_obj TSRMLS_CC);
-      zend_hash_del(array_hash, "credentials", 12);
-    }
-  }
-#else
-  array_hash = HASH_OF(args_array);
-  if ((creds_obj = zend_hash_str_find(array_hash, "credentials",
-                                      sizeof("credentials") - 1)) != NULL) {
     if (Z_TYPE_P(creds_obj) == IS_NULL) {
       creds = NULL;
-      zend_hash_str_del(array_hash, "credentials", sizeof("credentials") - 1);
-    } else if (Z_OBJ_P(creds_obj)->ce != grpc_ce_channel_credentials) {
+      php_grpc_zend_hash_del(array_hash, "credentials", sizeof("credentials"));
+    } else if (PHP_GRPC_GET_CLASS_ENTRY(creds_obj) !=
+               grpc_ce_channel_credentials) {
       zend_throw_exception(spl_ce_InvalidArgumentException,
                            "credentials must be a ChannelCredentials object",
-                           1);
+                           1 TSRMLS_CC);
       return;
     } else {
       creds = Z_WRAPPED_GRPC_CHANNEL_CREDS_P(creds_obj);
-      zend_hash_str_del(array_hash, "credentials", sizeof("credentials") - 1);
+      php_grpc_zend_hash_del(array_hash, "credentials", sizeof("credentials"));
     }
   }
-#endif
   php_grpc_read_args_array(args_array, &args TSRMLS_CC);
   if (creds == NULL) {
     channel->wrapped = grpc_insecure_channel_create(target, &args, NULL);
@@ -313,8 +216,7 @@ PHP_METHOD(Channel, watchConnectivityState) {
   if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "lO",
           &last_state, &deadline_obj, grpc_ce_timeval) == FAILURE) {
     zend_throw_exception(spl_ce_InvalidArgumentException,
-        "watchConnectivityState expects 1 long 1 timeval",
-        1 TSRMLS_CC);
+        "watchConnectivityState expects 1 long 1 timeval", 1 TSRMLS_CC);
     return;
   }
 
@@ -354,11 +256,5 @@ void grpc_init_channel(TSRMLS_D) {
   INIT_CLASS_ENTRY(ce, "Grpc\\Channel", channel_methods);
   ce.create_object = create_wrapped_grpc_channel;
   grpc_ce_channel = zend_register_internal_class(&ce TSRMLS_CC);
-#if PHP_MAJOR_VERSION >= 7
-  memcpy(&channel_ce_handlers, zend_get_std_object_handlers(),
-         sizeof(zend_object_handlers));
-  channel_ce_handlers.offset =
-    XtOffsetOf(wrapped_grpc_channel, std);
-  channel_ce_handlers.free_obj = free_wrapped_grpc_channel;
-#endif
+  PHP_GRPC_INIT_HANDLER(wrapped_grpc_channel, channel_ce_handlers);
 }
diff --git a/src/php/ext/grpc/channel.h b/src/php/ext/grpc/channel.h
index 94c633408e..0b815657d3 100755
--- a/src/php/ext/grpc/channel.h
+++ b/src/php/ext/grpc/channel.h
@@ -48,32 +48,25 @@
 /* Class entry for the PHP Channel class */
 extern zend_class_entry *grpc_ce_channel;
 
-#if PHP_MAJOR_VERSION < 7
-
 /* Wrapper struct for grpc_channel that can be associated with a PHP object */
-typedef struct wrapped_grpc_channel {
-  zend_object std;
+PHP_GRPC_WRAP_OBJECT_START(wrapped_grpc_channel)
   grpc_channel *wrapped;
-} wrapped_grpc_channel;
+PHP_GRPC_WRAP_OBJECT_END(wrapped_grpc_channel)
+
+#if PHP_MAJOR_VERSION < 7
 
 #define Z_WRAPPED_GRPC_CHANNEL_P(zv) \
   (wrapped_grpc_channel *)zend_object_store_get_object(zv TSRMLS_CC)
 
 #else
 
-/* Wrapper struct for grpc_channel that can be associated with a PHP object */
-typedef struct wrapped_grpc_channel {
-  grpc_channel *wrapped;
-  zend_object std;
-} wrapped_grpc_channel;
-
 static inline wrapped_grpc_channel
 *wrapped_grpc_channel_from_obj(zend_object *obj) {
   return (wrapped_grpc_channel*)((char*)(obj) -
                                  XtOffsetOf(wrapped_grpc_channel, std));
 }
 
-#define Z_WRAPPED_GRPC_CHANNEL_P(zv)            \
+#define Z_WRAPPED_GRPC_CHANNEL_P(zv) \
   wrapped_grpc_channel_from_obj(Z_OBJ_P((zv)))
 
 #endif /* PHP_MAJOR_VERSION */
diff --git a/src/php/ext/grpc/channel_credentials.c b/src/php/ext/grpc/channel_credentials.c
index e255b3004b..0b356aa25f 100644
--- a/src/php/ext/grpc/channel_credentials.c
+++ b/src/php/ext/grpc/channel_credentials.c
@@ -52,6 +52,9 @@
 #include <grpc/grpc_security.h>
 
 zend_class_entry *grpc_ce_channel_credentials;
+#if PHP_MAJOR_VERSION >= 7
+static zend_object_handlers channel_credentials_ce_handlers;
+#endif
 static char *default_pem_root_certs = NULL;
 
 static grpc_ssl_roots_override_result get_ssl_roots_override(
@@ -63,88 +66,35 @@ static grpc_ssl_roots_override_result get_ssl_roots_override(
   return GRPC_SSL_ROOTS_OVERRIDE_OK;
 }
 
-#if PHP_MAJOR_VERSION < 7
-
 /* Frees and destroys an instance of wrapped_grpc_channel_credentials */
-void free_wrapped_grpc_channel_credentials(void *object TSRMLS_DC) {
-  wrapped_grpc_channel_credentials *creds =
-      (wrapped_grpc_channel_credentials *)object;
-  if (creds->wrapped != NULL) {
-    grpc_channel_credentials_release(creds->wrapped);
+PHP_GRPC_FREE_WRAPPED_FUNC_START(wrapped_grpc_channel_credentials)
+  if (p->wrapped != NULL) {
+    grpc_channel_credentials_release(p->wrapped);
   }
-  zend_object_std_dtor(&creds->std TSRMLS_CC);
-  efree(creds);
-}
+PHP_GRPC_FREE_WRAPPED_FUNC_END()
 
 /* Initializes an instance of wrapped_grpc_channel_credentials to be
  * associated with an object of a class specified by class_type */
-zend_object_value create_wrapped_grpc_channel_credentials(
+php_grpc_zend_object create_wrapped_grpc_channel_credentials(
     zend_class_entry *class_type TSRMLS_DC) {
-  zend_object_value retval;
-  wrapped_grpc_channel_credentials *intern;
-
-  intern = (wrapped_grpc_channel_credentials *)emalloc(
-      sizeof(wrapped_grpc_channel_credentials));
-  memset(intern, 0, sizeof(wrapped_grpc_channel_credentials));
-
+  PHP_GRPC_ALLOC_CLASS_OBJECT(wrapped_grpc_channel_credentials);
   zend_object_std_init(&intern->std, class_type TSRMLS_CC);
   object_properties_init(&intern->std, class_type);
-  retval.handle = zend_objects_store_put(
-      intern, (zend_objects_store_dtor_t)zend_objects_destroy_object,
-      free_wrapped_grpc_channel_credentials, NULL TSRMLS_CC);
-  retval.handlers = zend_get_std_object_handlers();
-  return retval;
+  PHP_GRPC_FREE_CLASS_OBJECT(wrapped_grpc_channel_credentials,
+                             channel_credentials_ce_handlers);
 }
 
 zval *grpc_php_wrap_channel_credentials(grpc_channel_credentials
                                         *wrapped TSRMLS_DC) {
   zval *credentials_object;
-  MAKE_STD_ZVAL(credentials_object);
-  object_init_ex(credentials_object, grpc_ce_channel_credentials);
-  wrapped_grpc_channel_credentials *credentials =
-      (wrapped_grpc_channel_credentials *)zend_object_store_get_object(
-          credentials_object TSRMLS_CC);
-  credentials->wrapped = wrapped;
-  return credentials_object;
-}
-
-#else
-
-static zend_object_handlers channel_credentials_ce_handlers;
-
-/* Frees and destroys an instance of wrapped_grpc_channel_credentials */
-static void free_wrapped_grpc_channel_credentials(zend_object *object) {
-  wrapped_grpc_channel_credentials *creds =
-    wrapped_grpc_channel_creds_from_obj(object);
-  if (creds->wrapped != NULL) {
-    grpc_channel_credentials_release(creds->wrapped);
-  }
-  zend_object_std_dtor(&creds->std);
-}
-
-/* Initializes an instance of wrapped_grpc_channel_credentials to be
- * associated with an object of a class specified by class_type */
-zend_object *create_wrapped_grpc_channel_credentials(zend_class_entry
-                                                     *class_type) {
-  wrapped_grpc_channel_credentials *intern;
-  intern = ecalloc(1, sizeof(wrapped_grpc_channel_credentials) +
-                   zend_object_properties_size(class_type));
-  zend_object_std_init(&intern->std, class_type);
-  object_properties_init(&intern->std, class_type);
-  intern->std.handlers = &channel_credentials_ce_handlers;
-  return &intern->std;
-}
-
-void grpc_php_wrap_channel_credentials(grpc_channel_credentials *wrapped,
-                                       zval *credentials_object) {
+  PHP_GRPC_MAKE_STD_ZVAL(credentials_object);
   object_init_ex(credentials_object, grpc_ce_channel_credentials);
   wrapped_grpc_channel_credentials *credentials =
     Z_WRAPPED_GRPC_CHANNEL_CREDS_P(credentials_object);
   credentials->wrapped = wrapped;
+  return credentials_object;
 }
 
-#endif
-
 /**
  * Set default roots pem.
  * @param string pem_roots PEM encoding of the server root certificates
@@ -171,13 +121,10 @@ PHP_METHOD(ChannelCredentials, setDefaultRootsPem) {
  */
 PHP_METHOD(ChannelCredentials, createDefault) {
   grpc_channel_credentials *creds = grpc_google_default_credentials_create();
-#if PHP_MAJOR_VERSION < 7
-  zval *creds_object = grpc_php_wrap_channel_credentials(creds TSRMLS_CC);
+  zval *creds_object;
+  PHP_GRPC_MAKE_STD_ZVAL(creds_object);
+  creds_object = grpc_php_wrap_channel_credentials(creds TSRMLS_CC);
   RETURN_DESTROY_ZVAL(creds_object);
-#else
-  grpc_php_wrap_channel_credentials(creds, return_value);
-  RETURN_DESTROY_ZVAL(return_value);
-#endif
 }
 
 /**
@@ -213,13 +160,10 @@ PHP_METHOD(ChannelCredentials, createSsl) {
   grpc_channel_credentials *creds = grpc_ssl_credentials_create(
       pem_root_certs,
       pem_key_cert_pair.private_key == NULL ? NULL : &pem_key_cert_pair, NULL);
-#if PHP_MAJOR_VERSION < 7
-  zval *creds_object = grpc_php_wrap_channel_credentials(creds TSRMLS_CC);
+  zval *creds_object;
+  PHP_GRPC_MAKE_STD_ZVAL(creds_object);
+  creds_object = grpc_php_wrap_channel_credentials(creds TSRMLS_CC);
   RETURN_DESTROY_ZVAL(creds_object);
-#else
-  grpc_php_wrap_channel_credentials(creds, return_value);
-  RETURN_DESTROY_ZVAL(return_value);
-#endif
 }
 
 /**
@@ -244,19 +188,13 @@ PHP_METHOD(ChannelCredentials, createComposite) {
     Z_WRAPPED_GRPC_CHANNEL_CREDS_P(cred1_obj);
   wrapped_grpc_call_credentials *cred2 =
     Z_WRAPPED_GRPC_CALL_CREDS_P(cred2_obj);
-#if PHP_MAJOR_VERSION < 7
   grpc_channel_credentials *creds =
       grpc_composite_channel_credentials_create(cred1->wrapped, cred2->wrapped,
                                                 NULL);
-  zval *creds_object = grpc_php_wrap_channel_credentials(creds TSRMLS_CC);
+  zval *creds_object;
+  PHP_GRPC_MAKE_STD_ZVAL(creds_object);
+  creds_object = grpc_php_wrap_channel_credentials(creds TSRMLS_CC);
   RETURN_DESTROY_ZVAL(creds_object);
-#else
-  grpc_channel_credentials *creds =
-    grpc_composite_channel_credentials_create(cred1->wrapped,
-                                              cred2->wrapped, NULL);
-  grpc_php_wrap_channel_credentials(creds, return_value);
-  RETURN_DESTROY_ZVAL(return_value);
-#endif
 }
 
 /**
@@ -288,13 +226,6 @@ void grpc_init_channel_credentials(TSRMLS_D) {
   grpc_set_ssl_roots_override_callback(get_ssl_roots_override);
   ce.create_object = create_wrapped_grpc_channel_credentials;
   grpc_ce_channel_credentials = zend_register_internal_class(&ce TSRMLS_CC);
-#if PHP_MAJOR_VERSION >= 7
-  memcpy(&channel_credentials_ce_handlers,
-         zend_get_std_object_handlers(),
-         sizeof(zend_object_handlers));
-  channel_credentials_ce_handlers.offset =
-    XtOffsetOf(wrapped_grpc_channel_credentials, std);
-  channel_credentials_ce_handlers.free_obj =
-    free_wrapped_grpc_channel_credentials;
-#endif
+  PHP_GRPC_INIT_HANDLER(wrapped_grpc_channel_credentials,
+                        channel_credentials_ce_handlers);
 }
diff --git a/src/php/ext/grpc/channel_credentials.h b/src/php/ext/grpc/channel_credentials.h
index 0f7759daa6..b043d91fa6 100755
--- a/src/php/ext/grpc/channel_credentials.h
+++ b/src/php/ext/grpc/channel_credentials.h
@@ -49,37 +49,27 @@
 /* Class entry for the ChannelCredentials PHP class */
 extern zend_class_entry *grpc_ce_channel_credentials;
 
-#if PHP_MAJOR_VERSION < 7
-
 /* Wrapper struct for grpc_channel_credentials that can be associated
  * with a PHP object */
-typedef struct wrapped_grpc_channel_credentials {
-  zend_object std;
+PHP_GRPC_WRAP_OBJECT_START(wrapped_grpc_channel_credentials) 
   grpc_channel_credentials *wrapped;
-} wrapped_grpc_channel_credentials;
+PHP_GRPC_WRAP_OBJECT_END(wrapped_grpc_channel_credentials)
+
+#if PHP_MAJOR_VERSION < 7
 
 #define Z_WRAPPED_GRPC_CHANNEL_CREDS_P(zv) \
   (wrapped_grpc_channel_credentials *)zend_object_store_get_object(zv TSRMLS_CC)
 
 #else
 
-/* Wrapper struct for grpc_channel_credentials that can be associated
- * with a PHP object */
-typedef struct wrapped_grpc_channel_credentials {
-  grpc_channel_credentials *wrapped;
-  zend_object std;
-} wrapped_grpc_channel_credentials;
-
 static inline wrapped_grpc_channel_credentials
-*wrapped_grpc_channel_creds_from_obj(zend_object *obj) {
-  return
-    (wrapped_grpc_channel_credentials *)
-    ((char*)(obj) -
-     XtOffsetOf(wrapped_grpc_channel_credentials, std));
+*wrapped_grpc_channel_credentials_from_obj(zend_object *obj) {
+  return (wrapped_grpc_channel_credentials *)(
+      (char*)(obj) - XtOffsetOf(wrapped_grpc_channel_credentials, std));
 }
 
-#define Z_WRAPPED_GRPC_CHANNEL_CREDS_P(zv)            \
-  wrapped_grpc_channel_creds_from_obj(Z_OBJ_P((zv)))
+#define Z_WRAPPED_GRPC_CHANNEL_CREDS_P(zv) \
+  wrapped_grpc_channel_credentials_from_obj(Z_OBJ_P((zv)))
 
 #endif /* PHP_MAJOR_VERSION */
 
diff --git a/src/php/ext/grpc/package.xml b/src/php/ext/grpc/package.xml
deleted file mode 100644
index daf2ee5a53..0000000000
--- a/src/php/ext/grpc/package.xml
+++ /dev/null
@@ -1,156 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<package packagerversion="1.9.5" version="2.0" xmlns="http://pear.php.net/dtd/package-2.0" xmlns:tasks="http://pear.php.net/dtd/tasks-1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://pear.php.net/dtd/tasks-1.0 http://pear.php.net/dtd/tasks-1.0.xsd http://pear.php.net/dtd/package-2.0 http://pear.php.net/dtd/package-2.0.xsd">
- <name>grpc</name>
- <channel>pecl.php.net</channel>
- <summary>A high performance, open source, general RPC framework that puts mobile and HTTP/2 first.</summary>
- <description>Remote Procedure Calls (RPCs) provide a useful abstraction for building distributed applications and services. The libraries in this repository provide a concrete implementation of the gRPC protocol, layered over HTTP/2. These libraries enable communication between clients and servers using any combination of the supported languages.</description>
- <lead>
-  <name>Stanley Cheung</name>
-  <user>stanleycheung</user>
-  <email>grpc-packages@google.com</email>
-  <active>yes</active>
- </lead>
- <date>2016-01-13</date>
- <time>16:06:07</time>
- <version>
-  <release>0.7.0</release>
-  <api>0.7.0</api>
- </version>
- <stability>
-  <release>beta</release>
-  <api>beta</api>
- </stability>
- <license>BSD</license>
- <notes>
-- Breaking change to Credentials class (removed) #3765
-- Replaced by ChannelCredentials and CallCredentials class #3765
-- New plugin based metadata auth API #4394
-- Explicit ChannelCredentials::createInsecure() call
- </notes>
- <contents>
-  <dir baseinstalldir="/" name="/">
-   <file baseinstalldir="/" md5sum="f201d644fdbd8228ffd1d4a69cc44f1f" name="tests/grpc-basic.phpt" role="test" />
-   <file baseinstalldir="/" md5sum="6f19828fb869b7b8a590cbb76b4f996d" name="byte_buffer.c" role="src" />
-   <file baseinstalldir="/" md5sum="c8de0f819499c48adfc8d7f472c0196b" name="byte_buffer.h" role="src" />
-   <file baseinstalldir="/" md5sum="ee7eb7757f9e6f0e36f8f616b6bd0af5" name="call.c" role="src" />
-   <file baseinstalldir="/" md5sum="44c56bd9912d2538cbd6059e3e0452b6" name="call.h" role="src" />
-   <file baseinstalldir="/" md5sum="ff90f6c03ed44b5f4170bf3259a6704e" name="call_credentials.c" role="src" />
-   <file baseinstalldir="/" md5sum="3c3860e1d84f43cb6b2fbaa8d2ae1ab7" name="call_credentials.h" role="src" />
-   <file baseinstalldir="/" md5sum="aee9b63f790522aec2c682055240cc61" name="channel.c" role="src" />
-   <file baseinstalldir="/" md5sum="ed4b00c0cf3702b115d0cfa87450dc09" name="channel.h" role="src" />
-   <file baseinstalldir="/" md5sum="1a51c76d0b7b7d3ab570ed7d60c2ea46" name="channel_credentials.c" role="src" />
-   <file baseinstalldir="/" md5sum="a86250e03f610ce6c2c7595a84e08821" name="channel_credentials.h" role="src" />
-   <file baseinstalldir="/" md5sum="55ab7a42f9dd9bfc7e28a61cfc5fca63" name="completion_queue.c" role="src" />
-   <file baseinstalldir="/" md5sum="f10b5bb232d74a6878e829e2e76cdaa2" name="completion_queue.h" role="src" />
-   <file baseinstalldir="/" md5sum="cafed254127007ff2271dad7d56a06c8" name="config.m4" role="src" />
-   <file baseinstalldir="/" md5sum="38a1bc979d810c36ebc2a52d4b7b5319" name="CREDITS" role="doc" />
-   <file baseinstalldir="/" md5sum="8847cf67b1b54c981d47ecbb0d139a0c" name="LICENSE" role="doc" />
-   <file baseinstalldir="/" md5sum="3131a8af38fe5918e5409016b89d6cdb" name="php_grpc.c" role="src" />
-   <file baseinstalldir="/" md5sum="673b07859d9f69232f8a754c56780686" name="php_grpc.h" role="src" />
-   <file baseinstalldir="/" md5sum="7533a6d3ea02c78cad23a9651de0825d" name="README.md" role="doc" />
-   <file baseinstalldir="/" md5sum="3e4e960454ebb2fc7b78a840493f5315" name="server.c" role="src" />
-   <file baseinstalldir="/" md5sum="4b730f06d14cbbb0642bdbd194749595" name="server.h" role="src" />
-   <file baseinstalldir="/" md5sum="34ea881f1fe960d190d0713422cf8916" name="server_credentials.c" role="src" />
-   <file baseinstalldir="/" md5sum="9c4b4cc06356a8a39a16a085a9b85996" name="server_credentials.h" role="src" />
-   <file baseinstalldir="/" md5sum="7646ec78cb133f66ba59e03c6f451e39" name="timeval.c" role="src" />
-   <file baseinstalldir="/" md5sum="496e27a100b4d93ca3fb35c924c5e163" name="timeval.h" role="src" />
-  </dir>
- </contents>
- <dependencies>
-  <required>
-   <php>
-    <min>5.5.0</min>
-   </php>
-   <pearinstaller>
-    <min>1.4.0</min>
-   </pearinstaller>
-  </required>
- </dependencies>
- <providesextension>grpc</providesextension>
- <extsrcrelease />
- <changelog>
-  <release>
-   <version>
-    <release>0.5.0</release>
-    <api>0.5.0</api>
-   </version>
-   <stability>
-    <release>alpha</release>
-    <api>alpha</api>
-   </stability>
-   <date>2015-06-16</date>
-   <license>BSD</license>
-   <notes>
-First alpha release
-   </notes>
-  </release>
-  <release>
-   <version>
-    <release>0.5.1</release>
-    <api>0.5.1</api>
-   </version>
-   <stability>
-    <release>alpha</release>
-    <api>alpha</api>
-   </stability>
-   <date>2015-07-09</date>
-   <license>BSD</license>
-   <notes>
-Update to wrap gRPC C Core version 0.10.0
-   </notes>
-  </release>
-  <release>
-   <version>
-    <release>0.6.0</release>
-    <api>0.6.0</api>
-   </version>
-   <stability>
-    <release>beta</release>
-    <api>beta</api>
-   </stability>
-   <date>2015-09-24</date>
-   <license>BSD</license>
-   <notes>
-- support per message compression disable
-- expose per-call host override option
-- expose connectivity API
-- expose channel target and call peer
-- add user-agent
-- update to wrap gRPC C core library beta version 0.11.0
-   </notes>
-  </release>
-  <release>
-   <version>
-    <release>0.6.1</release>
-    <api>0.6.0</api>
-   </version>
-   <stability>
-    <release>beta</release>
-    <api>beta</api>
-   </stability>
-   <date>2015-10-21</date>
-   <license>BSD</license>
-   <notes>
-- fixed undefined constant fatal error when run with apache/nginx #2275
-   </notes>
-  </release>
-  <release>
-   <version>
-    <release>0.7.0</release>
-    <api>0.7.0</api>
-   </version>
-   <stability>
-    <release>beta</release>
-    <api>beta</api>
-   </stability>
-   <date>2016-01-13</date>
-   <license>BSD</license>
-   <notes>
-- Breaking change to Credentials class (removed) #3765
-- Replaced by ChannelCredentials and CallCredentials class #3765
-- New plugin based metadata auth API #4394
-- Explicit ChannelCredentials::createInsecure() call
-   </notes>
-  </release>
- </changelog>
-</package>
diff --git a/src/php/ext/grpc/php7_wrapper.h b/src/php/ext/grpc/php7_wrapper.h
index e4d0d4c90b..fd8d35636f 100644
--- a/src/php/ext/grpc/php7_wrapper.h
+++ b/src/php/ext/grpc/php7_wrapper.h
@@ -39,13 +39,179 @@
 
 #define php_grpc_int int
 #define php_grpc_long long
+#define php_grpc_ulong ulong
+#define php_grpc_zend_object zend_object_value
+#define php_grpc_add_property_string(arg, name, context, b) \
+  add_property_string(arg, name, context, b)
+#define php_grpc_add_property_stringl(res, name, str, len, b) \
+  add_property_stringl(res, name, str, len, b)
+#define php_grpc_add_next_index_stringl(data, str, len, b) \
+  add_next_index_stringl(data, str, len, b)
+
 #define PHP_GRPC_RETURN_STRING(val, dup) RETURN_STRING(val, dup)
+#define PHP_GRPC_MAKE_STD_ZVAL(pzv) MAKE_STD_ZVAL(pzv)
+#define PHP_GRPC_DELREF(zv) Z_DELREF_P(zv)
+
+#define PHP_GRPC_WRAP_OBJECT_START(name) \
+  typedef struct name { \
+    zend_object std;
+#define PHP_GRPC_WRAP_OBJECT_END(name) \
+  } name;
+
+#define PHP_GRPC_FREE_WRAPPED_FUNC_START(class_object) \
+  void free_##class_object(void *object TSRMLS_DC) { \
+    class_object *p = (class_object *)object;
+#define PHP_GRPC_FREE_WRAPPED_FUNC_END() \
+    zend_object_std_dtor(&p->std TSRMLS_CC); \
+    efree(p); \
+  }
+
+#define PHP_GRPC_ALLOC_CLASS_OBJECT(class_object) \
+  class_object *intern; \
+  zend_object_value retval; \
+  intern = (class_object *)emalloc(sizeof(class_object)); \
+  memset(intern, 0, sizeof(class_object));
+
+#define PHP_GRPC_FREE_CLASS_OBJECT(class_object, handler) \
+  retval.handle = zend_objects_store_put( \
+    intern, (zend_objects_store_dtor_t)zend_objects_destroy_object, \
+    free_##class_object, NULL TSRMLS_CC); \
+  retval.handlers = zend_get_std_object_handlers(); \
+  return retval;
+
+#define PHP_GRPC_HASH_FOREACH_VAL_START(ht, data) \
+  zval **tmp_data = NULL; \
+  for (zend_hash_internal_pointer_reset(ht); \
+       zend_hash_get_current_data(ht, (void**)&tmp_data) == SUCCESS; \
+       zend_hash_move_forward(ht)) { \
+    data = *tmp_data;
+
+#define PHP_GRPC_HASH_FOREACH_STR_KEY_VAL_START(ht, key, key_type, data) \
+  zval **tmp##key = NULL; \
+  ulong index##key; \
+  uint len##key; \
+  for (zend_hash_internal_pointer_reset(ht); \
+       zend_hash_get_current_data(ht, (void**)&tmp##key) == SUCCESS; \
+       zend_hash_move_forward(ht)) { \
+    key_type = zend_hash_get_current_key_ex(ht, &key, &len##key, &index##key,\
+                                         0, NULL); \
+    data = *tmp##key;
+
+#define PHP_GRPC_HASH_FOREACH_LONG_KEY_VAL_START(ht, key, key_type, index,\
+                                                 data) \
+  zval **tmp##key = NULL; \
+  uint len##key; \
+  for (zend_hash_internal_pointer_reset(ht); \
+       zend_hash_get_current_data(ht, (void**)&tmp##key) == SUCCESS; \
+       zend_hash_move_forward(ht)) { \
+    key_type = zend_hash_get_current_key_ex(ht, &key, &len##key, &index,\
+                                         0, NULL); \
+    data = *tmp##key;
+
+#define PHP_GRPC_HASH_FOREACH_END() }
+
+static inline int php_grpc_zend_hash_find(HashTable *ht, char *key, int len,
+                                          void **value) {
+  zval **data = NULL;
+  if (zend_hash_find(ht, key, len, (void **)&data) == SUCCESS) {
+    *value = *data;
+    return SUCCESS;
+  } else {
+    *value = NULL;
+    return FAILURE;
+  }
+}
+
+#define php_grpc_zend_hash_del zend_hash_del
+
+#define PHP_GRPC_GET_CLASS_ENTRY(object) zend_get_class_entry(object TSRMLS_CC)
+
+#define PHP_GRPC_INIT_HANDLER(class_object, handler_name)
 
 #else
 
 #define php_grpc_int size_t
 #define php_grpc_long zend_long
+#define php_grpc_ulong zend_ulong
+#define php_grpc_zend_object zend_object*
+#define php_grpc_add_property_string(arg, name, context, b) \
+  add_property_string(arg, name, context)
+#define php_grpc_add_property_stringl(res, name, str, len, b) \
+  add_property_stringl(res, name, str, len)
+#define php_grpc_add_next_index_stringl(data, str, len, b) \
+  add_next_index_stringl(data, str, len)
+
 #define PHP_GRPC_RETURN_STRING(val, dup) RETURN_STRING(val)
+#define PHP_GRPC_MAKE_STD_ZVAL(pzv) \
+  zval _stack_zval_##pzv; \
+  pzv = &(_stack_zval_##pzv)
+#define PHP_GRPC_DELREF(zv)
+
+#define PHP_GRPC_WRAP_OBJECT_START(name) \
+  typedef struct name {
+#define PHP_GRPC_WRAP_OBJECT_END(name) \
+    zend_object std; \
+  } name;
+
+#define WRAPPED_OBJECT_FROM_OBJ(class_object, obj) \
+  class_object##_from_obj(obj);
+
+#define PHP_GRPC_FREE_WRAPPED_FUNC_START(class_object) \
+  static void free_##class_object(zend_object *object) { \
+    class_object *p = WRAPPED_OBJECT_FROM_OBJ(class_object, object)
+#define PHP_GRPC_FREE_WRAPPED_FUNC_END() \
+    zend_object_std_dtor(&p->std); \
+  }
+
+#define PHP_GRPC_ALLOC_CLASS_OBJECT(class_object) \
+  class_object *intern; \
+  intern = ecalloc(1, sizeof(class_object) + \
+                   zend_object_properties_size(class_type));
+
+#define PHP_GRPC_FREE_CLASS_OBJECT(class_object, handler) \
+  intern->std.handlers = &handler; \
+  return &intern->std;
+
+#define PHP_GRPC_HASH_FOREACH_VAL_START(ht, data) \
+  ZEND_HASH_FOREACH_VAL(ht, data) {
+
+#define PHP_GRPC_HASH_FOREACH_STR_KEY_VAL_START(ht, key, key_type, data) \
+  zend_string *(zs_##key); \
+  ZEND_HASH_FOREACH_STR_KEY_VAL(ht, (zs_##key), data) { \
+    if ((zs_##key) == NULL) {key = NULL; key_type = HASH_KEY_IS_LONG;} \
+    else {key = (zs_##key)->val; key_type = HASH_KEY_IS_STRING;}
+
+#define PHP_GRPC_HASH_FOREACH_LONG_KEY_VAL_START(ht, key, key_type, index, \
+                                                 data) \
+  zend_string *(zs_##key); \
+  ZEND_HASH_FOREACH_KEY_VAL(ht, index, zs_##key, data) { \
+    if ((zs_##key) == NULL) {key = NULL; key_type = HASH_KEY_IS_LONG;} \
+    else {key = (zs_##key)->val; key_type = HASH_KEY_IS_STRING;}
+
+#define PHP_GRPC_HASH_FOREACH_END() } ZEND_HASH_FOREACH_END();
+
+static inline int php_grpc_zend_hash_find(HashTable *ht, char *key, int len,
+                                          void **value) {
+  zval *value_tmp = zend_hash_str_find(ht, key, len -1);
+  if (value_tmp == NULL) {
+    return FAILURE;
+  } else {
+    *value = (void *)value_tmp;
+    return SUCCESS;
+  }
+}
+
+static inline int php_grpc_zend_hash_del(HashTable *ht, char *key, int len) {
+  return zend_hash_str_del(ht, key, len - 1);
+}
+
+#define PHP_GRPC_GET_CLASS_ENTRY(object) Z_OBJ_P(object)->ce
+
+#define PHP_GRPC_INIT_HANDLER(class_object, handler_name) \
+  memcpy(&handler_name, zend_get_std_object_handlers(), \
+         sizeof(zend_object_handlers)); \
+  handler_name.offset = XtOffsetOf(class_object, std); \
+  handler_name.free_obj = free_##class_object
 
 #endif /* PHP_MAJOR_VERSION */
 
diff --git a/src/php/ext/grpc/server.c b/src/php/ext/grpc/server.c
index e67e62c34e..fc20c42b16 100644
--- a/src/php/ext/grpc/server.c
+++ b/src/php/ext/grpc/server.c
@@ -57,73 +57,31 @@
 #include "timeval.h"
 
 zend_class_entry *grpc_ce_server;
-
-#if PHP_MAJOR_VERSION < 7
-
-/* Frees and destroys an instance of wrapped_grpc_server */
-void free_wrapped_grpc_server(void *object TSRMLS_DC) {
-  wrapped_grpc_server *server = (wrapped_grpc_server *)object;
-  if (server->wrapped != NULL) {
-    grpc_server_shutdown_and_notify(server->wrapped, completion_queue, NULL);
-    grpc_server_cancel_all_calls(server->wrapped);
-    grpc_completion_queue_pluck(completion_queue, NULL,
-                                gpr_inf_future(GPR_CLOCK_REALTIME), NULL);
-    grpc_server_destroy(server->wrapped);
-  }
-  zend_object_std_dtor(&server->std TSRMLS_CC);
-  efree(server);
-}
-
-/* Initializes an instance of wrapped_grpc_call to be associated with an object
- * of a class specified by class_type */
-zend_object_value create_wrapped_grpc_server(zend_class_entry *class_type
-                                                 TSRMLS_DC) {
-  zend_object_value retval;
-  wrapped_grpc_server *intern;
-
-  intern = (wrapped_grpc_server *)emalloc(sizeof(wrapped_grpc_server));
-  memset(intern, 0, sizeof(wrapped_grpc_server));
-
-  zend_object_std_init(&intern->std, class_type TSRMLS_CC);
-  object_properties_init(&intern->std, class_type);
-  retval.handle = zend_objects_store_put(
-      intern, (zend_objects_store_dtor_t)zend_objects_destroy_object,
-      free_wrapped_grpc_server, NULL TSRMLS_CC);
-  retval.handlers = zend_get_std_object_handlers();
-  return retval;
-}
-
-#else
-
+#if PHP_MAJOR_VERSION >= 7
 static zend_object_handlers server_ce_handlers;
+#endif
 
 /* Frees and destroys an instance of wrapped_grpc_server */
-static void free_wrapped_grpc_server(zend_object *object) {
-  wrapped_grpc_server *server = wrapped_grpc_server_from_obj(object);
-  if (server->wrapped != NULL) {
-    grpc_server_shutdown_and_notify(server->wrapped, completion_queue, NULL);
-    grpc_server_cancel_all_calls(server->wrapped);
+PHP_GRPC_FREE_WRAPPED_FUNC_START(wrapped_grpc_server)
+  if (p->wrapped != NULL) {
+    grpc_server_shutdown_and_notify(p->wrapped, completion_queue, NULL);
+    grpc_server_cancel_all_calls(p->wrapped);
     grpc_completion_queue_pluck(completion_queue, NULL,
                                 gpr_inf_future(GPR_CLOCK_REALTIME), NULL);
-    grpc_server_destroy(server->wrapped);
+    grpc_server_destroy(p->wrapped);
   }
-  zend_object_std_dtor(&server->std);
-}
+PHP_GRPC_FREE_WRAPPED_FUNC_END()
 
 /* Initializes an instance of wrapped_grpc_call to be associated with an object
  * of a class specified by class_type */
-zend_object *create_wrapped_grpc_server(zend_class_entry *class_type) {
-  wrapped_grpc_server *intern;
-  intern = ecalloc(1, sizeof(wrapped_grpc_server) +
-                   zend_object_properties_size(class_type));
-  zend_object_std_init(&intern->std, class_type);
+php_grpc_zend_object create_wrapped_grpc_server(zend_class_entry *class_type
+                                                TSRMLS_DC) {
+  PHP_GRPC_ALLOC_CLASS_OBJECT(wrapped_grpc_server);
+  zend_object_std_init(&intern->std, class_type TSRMLS_CC);
   object_properties_init(&intern->std, class_type);
-  intern->std.handlers = &server_ce_handlers;
-  return &intern->std;
+  PHP_GRPC_FREE_CLASS_OBJECT(wrapped_grpc_server, server_ce_handlers);
 }
 
-#endif
-
 /**
  * Constructs a new instance of the Server class
  * @param array $args The arguments to pass to the server (optional)
@@ -168,13 +126,9 @@ PHP_METHOD(Server, requestCall) {
   grpc_event event;
 
   wrapped_grpc_server *server = Z_WRAPPED_GRPC_SERVER_P(getThis());
-#if PHP_MAJOR_VERSION < 7
   zval *result;
-  MAKE_STD_ZVAL(result);
+  PHP_GRPC_MAKE_STD_ZVAL(result);
   object_init(result);
-#else
-  object_init(return_value);
-#endif
 
   grpc_call_details_init(&details);
   grpc_metadata_array_init(&metadata);
@@ -195,40 +149,32 @@ PHP_METHOD(Server, requestCall) {
                          1 TSRMLS_CC);
     goto cleanup;
   }
+  php_grpc_add_property_string(result, "method", details.method, true);
+  php_grpc_add_property_string(result, "host", details.host, true);
 #if PHP_MAJOR_VERSION < 7
   add_property_zval(result, "call", grpc_php_wrap_call(call, true TSRMLS_CC));
-  add_property_string(result, "method", details.method, true);
-  add_property_string(result, "host", details.host, true);
   add_property_zval(result, "absolute_deadline",
                     grpc_php_wrap_timeval(details.deadline TSRMLS_CC));
   add_property_zval(result, "metadata", grpc_parse_metadata_array(&metadata
                                                                   TSRMLS_CC));
- 
-cleanup:
-  grpc_call_details_destroy(&details);
-  grpc_metadata_array_destroy(&metadata);
-  RETURN_DESTROY_ZVAL(result);
-
 #else
-
   zval zv_call;
   zval zv_timeval;
   zval zv_md;
-  grpc_php_wrap_call(call, true, &zv_call);
-  grpc_php_wrap_timeval(details.deadline, &zv_timeval);
-  grpc_parse_metadata_array(&metadata, &zv_md);
-
-  add_property_zval(return_value, "call", &zv_call);
-  add_property_string(return_value, "method", details.method);
-  add_property_string(return_value, "host", details.host);
-  add_property_zval(return_value, "absolute_deadline", &zv_timeval);
-  add_property_zval(return_value, "metadata", &zv_md);
+  //TODO(thinkerou): why use zval* to unit test error?
+  zv_call = *grpc_php_wrap_call(call, true);
+  zv_timeval = *grpc_php_wrap_timeval(details.deadline);
+  zv_md = *grpc_parse_metadata_array(&metadata);
+
+  add_property_zval(result, "call", &zv_call);
+  add_property_zval(result, "absolute_deadline", &zv_timeval);
+  add_property_zval(result, "metadata", &zv_md);
+#endif
 
  cleanup:
   grpc_call_details_destroy(&details);
   grpc_metadata_array_destroy(&metadata);
-  RETURN_DESTROY_ZVAL(return_value);
-#endif
+  RETURN_DESTROY_ZVAL(result);
 }
 
 /**
@@ -287,7 +233,7 @@ static zend_function_entry server_methods[] = {
   PHP_ME(Server, addHttp2Port, NULL, ZEND_ACC_PUBLIC)
   PHP_ME(Server, addSecureHttp2Port, NULL, ZEND_ACC_PUBLIC)
   PHP_ME(Server, start, NULL, ZEND_ACC_PUBLIC)
- PHP_FE_END
+  PHP_FE_END
 };
 
 void grpc_init_server(TSRMLS_D) {
@@ -295,10 +241,5 @@ void grpc_init_server(TSRMLS_D) {
   INIT_CLASS_ENTRY(ce, "Grpc\\Server", server_methods);
   ce.create_object = create_wrapped_grpc_server;
   grpc_ce_server = zend_register_internal_class(&ce TSRMLS_CC);
-#if PHP_MAJOR_VERSION >= 7
-  memcpy(&server_ce_handlers, zend_get_std_object_handlers(),
-         sizeof(zend_object_handlers));
-  server_ce_handlers.offset = XtOffsetOf(wrapped_grpc_server, std);
-  server_ce_handlers.free_obj = free_wrapped_grpc_server;
-#endif
+  PHP_GRPC_INIT_HANDLER(wrapped_grpc_server, server_ce_handlers);
 }
diff --git a/src/php/ext/grpc/server.h b/src/php/ext/grpc/server.h
index 603b9a7102..a635bc11df 100755
--- a/src/php/ext/grpc/server.h
+++ b/src/php/ext/grpc/server.h
@@ -48,33 +48,25 @@
 /* Class entry for the Server PHP class */
 extern zend_class_entry *grpc_ce_server;
 
-#if PHP_MAJOR_VERSION < 7
-
 /* Wrapper struct for grpc_server that can be associated with a PHP object */
-typedef struct wrapped_grpc_server {
-  zend_object std;
+PHP_GRPC_WRAP_OBJECT_START(wrapped_grpc_server)
   grpc_server *wrapped;
-} wrapped_grpc_server;
+PHP_GRPC_WRAP_OBJECT_END(wrapped_grpc_server)
+
+#if PHP_MAJOR_VERSION < 7
 
 #define Z_WRAPPED_GRPC_SERVER_P(zv) \
   (wrapped_grpc_server *)zend_object_store_get_object(zv TSRMLS_CC)
 
 #else
 
-/* Wrapper struct for grpc_server that can be associated with a PHP object */
-typedef struct wrapped_grpc_server {
-  grpc_server *wrapped;
-  zend_object std;
-} wrapped_grpc_server;
-
 static inline wrapped_grpc_server
 *wrapped_grpc_server_from_obj(zend_object *obj) {
   return (wrapped_grpc_server*)((char*)(obj) -
                                 XtOffsetOf(wrapped_grpc_server, std));
 }
 
-#define Z_WRAPPED_GRPC_SERVER_P(zv)             \
-  wrapped_grpc_server_from_obj(Z_OBJ_P((zv)))
+#define Z_WRAPPED_GRPC_SERVER_P(zv) wrapped_grpc_server_from_obj(Z_OBJ_P((zv)))
 
 #endif /* PHP_MAJOR_VERSION */
 
diff --git a/src/php/ext/grpc/server_credentials.c b/src/php/ext/grpc/server_credentials.c
index e61fc5b4a1..b05896af4a 100644
--- a/src/php/ext/grpc/server_credentials.c
+++ b/src/php/ext/grpc/server_credentials.c
@@ -50,89 +50,39 @@
 #include <grpc/grpc_security.h>
 
 zend_class_entry *grpc_ce_server_credentials;
-
-#if PHP_MAJOR_VERSION < 7
+#if PHP_MAJOR_VERSION >= 7
+static zend_object_handlers server_credentials_ce_handlers;
+#endif
 
 /* Frees and destroys an instace of wrapped_grpc_server_credentials */
-void free_wrapped_grpc_server_credentials(void *object TSRMLS_DC) {
-  wrapped_grpc_server_credentials *creds =
-      (wrapped_grpc_server_credentials *)object;
-  if (creds->wrapped != NULL) {
-    grpc_server_credentials_release(creds->wrapped);
+PHP_GRPC_FREE_WRAPPED_FUNC_START(wrapped_grpc_server_credentials)
+  if (p->wrapped != NULL) {
+    grpc_server_credentials_release(p->wrapped);
   }
-  zend_object_std_dtor(&creds->std TSRMLS_CC);
-  efree(creds);
-}
+PHP_GRPC_FREE_WRAPPED_FUNC_END()
 
 /* Initializes an instace of wrapped_grpc_server_credentials to be associated
  * with an object of a class specified by class_type */
-zend_object_value create_wrapped_grpc_server_credentials(
+php_grpc_zend_object create_wrapped_grpc_server_credentials(
     zend_class_entry *class_type TSRMLS_DC) {
-  zend_object_value retval;
-  wrapped_grpc_server_credentials *intern;
-
-  intern = (wrapped_grpc_server_credentials *)emalloc(
-      sizeof(wrapped_grpc_server_credentials));
-  memset(intern, 0, sizeof(wrapped_grpc_server_credentials));
-
+  PHP_GRPC_ALLOC_CLASS_OBJECT(wrapped_grpc_server_credentials);
   zend_object_std_init(&intern->std, class_type TSRMLS_CC);
   object_properties_init(&intern->std, class_type);
-  retval.handle = zend_objects_store_put(
-      intern, (zend_objects_store_dtor_t)zend_objects_destroy_object,
-      free_wrapped_grpc_server_credentials, NULL TSRMLS_CC);
-  retval.handlers = zend_get_std_object_handlers();
-  return retval;
+  PHP_GRPC_FREE_CLASS_OBJECT(wrapped_grpc_server_credentials,
+                             server_credentials_ce_handlers);
 }
 
 zval *grpc_php_wrap_server_credentials(grpc_server_credentials
                                        *wrapped TSRMLS_DC) {
   zval *server_credentials_object;
-  MAKE_STD_ZVAL(server_credentials_object);
-  object_init_ex(server_credentials_object, grpc_ce_server_credentials);
-  wrapped_grpc_server_credentials *server_credentials =
-      (wrapped_grpc_server_credentials *)zend_object_store_get_object(
-          server_credentials_object TSRMLS_CC);
-  server_credentials->wrapped = wrapped;
-  return server_credentials_object;
-}
-
-#else
-
-static zend_object_handlers server_credentials_ce_handlers;
-
-/* Frees and destroys an instace of wrapped_grpc_server_credentials */
-static void free_wrapped_grpc_server_credentials(zend_object *object) {
-  wrapped_grpc_server_credentials *creds =
-    wrapped_grpc_server_creds_from_obj(object);
-  if (creds->wrapped != NULL) {
-    grpc_server_credentials_release(creds->wrapped);
-  }
-  zend_object_std_dtor(&creds->std);
-}
-
-/* Initializes an instace of wrapped_grpc_server_credentials to be associated
- * with an object of a class specified by class_type */
-zend_object *create_wrapped_grpc_server_credentials(zend_class_entry
-                                                    *class_type) {
-  wrapped_grpc_server_credentials *intern;
-  intern = ecalloc(1, sizeof(wrapped_grpc_server_credentials) +
-                   zend_object_properties_size(class_type));
-  zend_object_std_init(&intern->std, class_type);
-  object_properties_init(&intern->std, class_type);
-  intern->std.handlers = &server_credentials_ce_handlers;
-  return &intern->std;
-}
-
-void grpc_php_wrap_server_credentials(grpc_server_credentials *wrapped,
-                                      zval *server_credentials_object) {
+  PHP_GRPC_MAKE_STD_ZVAL(server_credentials_object);
   object_init_ex(server_credentials_object, grpc_ce_server_credentials);
   wrapped_grpc_server_credentials *server_credentials =
     Z_WRAPPED_GRPC_SERVER_CREDS_P(server_credentials_object);
   server_credentials->wrapped = wrapped;
+  return server_credentials_object;
 }
 
-#endif
-
 /**
  * Create SSL credentials.
  * @param string pem_root_certs PEM encoding of the server root certificates
@@ -163,19 +113,16 @@ PHP_METHOD(ServerCredentials, createSsl) {
   grpc_server_credentials *creds = grpc_ssl_server_credentials_create_ex(
       pem_root_certs, &pem_key_cert_pair, 1,
       GRPC_SSL_DONT_REQUEST_CLIENT_CERTIFICATE, NULL);
-#if PHP_MAJOR_VERSION < 7
-  zval *creds_object = grpc_php_wrap_server_credentials(creds TSRMLS_CC);
+  zval *creds_object;
+  PHP_GRPC_MAKE_STD_ZVAL(creds_object);
+  creds_object = grpc_php_wrap_server_credentials(creds TSRMLS_CC);
   RETURN_DESTROY_ZVAL(creds_object);
-#else
-  grpc_php_wrap_server_credentials(creds, return_value);
-  RETURN_DESTROY_ZVAL(return_value);
-#endif
 }
 
 static zend_function_entry server_credentials_methods[] = {
   PHP_ME(ServerCredentials, createSsl, NULL,
          ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
-   PHP_FE_END
+  PHP_FE_END
  };
 
 void grpc_init_server_credentials(TSRMLS_D) {
@@ -183,13 +130,6 @@ void grpc_init_server_credentials(TSRMLS_D) {
   INIT_CLASS_ENTRY(ce, "Grpc\\ServerCredentials", server_credentials_methods);
   ce.create_object = create_wrapped_grpc_server_credentials;
   grpc_ce_server_credentials = zend_register_internal_class(&ce TSRMLS_CC);
-#if PHP_MAJOR_VERSION >= 7
-  memcpy(&server_credentials_ce_handlers,
-         zend_get_std_object_handlers(),
-         sizeof(zend_object_handlers));
-  server_credentials_ce_handlers.offset =
-    XtOffsetOf(wrapped_grpc_server_credentials, std);
-  server_credentials_ce_handlers.free_obj =
-    free_wrapped_grpc_server_credentials;
-#endif
+  PHP_GRPC_INIT_HANDLER(wrapped_grpc_server_credentials,
+                        server_credentials_ce_handlers);
 }
diff --git a/src/php/ext/grpc/server_credentials.h b/src/php/ext/grpc/server_credentials.h
index 9df5950fa7..6781a614b1 100755
--- a/src/php/ext/grpc/server_credentials.h
+++ b/src/php/ext/grpc/server_credentials.h
@@ -49,34 +49,27 @@
 /* Class entry for the Server_Credentials PHP class */
 extern zend_class_entry *grpc_ce_server_credentials;
 
-#if PHP_MAJOR_VERSION < 7
-
 /* Wrapper struct for grpc_server_credentials that can be associated with a PHP
  * object */
-typedef struct wrapped_grpc_server_credentials {
-  zend_object std;
+PHP_GRPC_WRAP_OBJECT_START(wrapped_grpc_server_credentials)
   grpc_server_credentials *wrapped;
-} wrapped_grpc_server_credentials;
+PHP_GRPC_WRAP_OBJECT_END(wrapped_grpc_server_credentials)
+
+#if PHP_MAJOR_VERSION < 7
 
 #define Z_WRAPPED_GRPC_SERVER_CREDS_P(zv) \
   (wrapped_grpc_server_credentials *)zend_object_store_get_object(zv TSRMLS_CC)
 
 #else
 
-typedef struct wrapped_grpc_server_credentials {
-  grpc_server_credentials *wrapped;
-  zend_object std;
-} wrapped_grpc_server_credentials;
-
 static inline wrapped_grpc_server_credentials
-*wrapped_grpc_server_creds_from_obj(zend_object *obj) {
-  return (wrapped_grpc_server_credentials*)
-    ((char*)(obj) -
-     XtOffsetOf(wrapped_grpc_server_credentials, std));
+*wrapped_grpc_server_credentials_from_obj(zend_object *obj) {
+  return (wrapped_grpc_server_credentials*)(
+      (char*)(obj) - XtOffsetOf(wrapped_grpc_server_credentials, std));
 }
 
-#define Z_WRAPPED_GRPC_SERVER_CREDS_P(zv)           \
-  wrapped_grpc_server_creds_from_obj(Z_OBJ_P((zv)))
+#define Z_WRAPPED_GRPC_SERVER_CREDS_P(zv) \
+  wrapped_grpc_server_credentials_from_obj(Z_OBJ_P((zv)))
 
 #endif /* PHP_MAJOR_VERSION */
 
diff --git a/src/php/ext/grpc/timeval.c b/src/php/ext/grpc/timeval.c
index a3ec62f13f..e145d96772 100644
--- a/src/php/ext/grpc/timeval.c
+++ b/src/php/ext/grpc/timeval.c
@@ -51,74 +51,33 @@
 #include <grpc/support/time.h>
 
 zend_class_entry *grpc_ce_timeval;
-
-#if PHP_MAJOR_VERSION < 7
+#if PHP_MAJOR_VERSION >= 7
+static zend_object_handlers timeval_ce_handlers;
+#endif
 
 /* Frees and destroys an instance of wrapped_grpc_call */
-void free_wrapped_grpc_timeval(void *object TSRMLS_DC) {
-    wrapped_grpc_timeval *timeval = (wrapped_grpc_timeval *)object;
-    zend_object_std_dtor(&timeval->std TSRMLS_CC);
-    efree(timeval);
-}
+PHP_GRPC_FREE_WRAPPED_FUNC_START(wrapped_grpc_timeval)
+PHP_GRPC_FREE_WRAPPED_FUNC_END()
 
 /* Initializes an instance of wrapped_grpc_timeval to be associated with an
  * object of a class specified by class_type */
-zend_object_value create_wrapped_grpc_timeval(zend_class_entry *class_type
-                                                  TSRMLS_DC) {
-  zend_object_value retval;
-  wrapped_grpc_timeval *intern;
-  intern = (wrapped_grpc_timeval *)emalloc(sizeof(wrapped_grpc_timeval));
-  memset(intern, 0, sizeof(wrapped_grpc_timeval));
+php_grpc_zend_object create_wrapped_grpc_timeval(zend_class_entry *class_type
+                                                 TSRMLS_DC) {
+  PHP_GRPC_ALLOC_CLASS_OBJECT(wrapped_grpc_timeval);
   zend_object_std_init(&intern->std, class_type TSRMLS_CC);
   object_properties_init(&intern->std, class_type);
-  retval.handle = zend_objects_store_put(
-      intern, (zend_objects_store_dtor_t)zend_objects_destroy_object,
-      free_wrapped_grpc_timeval, NULL TSRMLS_CC);
-  retval.handlers = zend_get_std_object_handlers();
-  return retval;
+  PHP_GRPC_FREE_CLASS_OBJECT(wrapped_grpc_timeval, timeval_ce_handlers);
 }
 
 zval *grpc_php_wrap_timeval(gpr_timespec wrapped TSRMLS_DC) {
   zval *timeval_object;
-  MAKE_STD_ZVAL(timeval_object);
-  object_init_ex(timeval_object, grpc_ce_timeval);
-  wrapped_grpc_timeval *timeval =
-      (wrapped_grpc_timeval *)zend_object_store_get_object(
-          timeval_object TSRMLS_CC);
-  memcpy(&timeval->wrapped, &wrapped, sizeof(gpr_timespec));
-  return timeval_object;
-}
-
-#else
-
-static zend_object_handlers timeval_ce_handlers;
-
-/* Frees and destroys an instance of wrapped_grpc_call */
-static void free_wrapped_grpc_timeval(zend_object *object) {
-  wrapped_grpc_timeval *timeval = wrapped_grpc_timeval_from_obj(object);
-  zend_object_std_dtor(&timeval->std);
-}
-
-/* Initializes an instance of wrapped_grpc_timeval to be associated with an
- * object of a class specified by class_type */
-zend_object *create_wrapped_grpc_timeval(zend_class_entry *class_type) {
-  wrapped_grpc_timeval *intern;
-  intern = ecalloc(1, sizeof(wrapped_grpc_timeval) +
-                   zend_object_properties_size(class_type));
-  zend_object_std_init(&intern->std, class_type);
-  object_properties_init(&intern->std, class_type);
-  intern->std.handlers = &timeval_ce_handlers;
-  return &intern->std;
-}
-
-void grpc_php_wrap_timeval(gpr_timespec wrapped, zval *timeval_object) {
+  PHP_GRPC_MAKE_STD_ZVAL(timeval_object);
   object_init_ex(timeval_object, grpc_ce_timeval);
   wrapped_grpc_timeval *timeval = Z_WRAPPED_GRPC_TIMEVAL_P(timeval_object);
   memcpy(&timeval->wrapped, &wrapped, sizeof(gpr_timespec));
+  return timeval_object;
 }
 
-#endif
-
 /**
  * Constructs a new instance of the Timeval class
  * @param long $usec The number of microseconds in the interval
@@ -156,16 +115,12 @@ PHP_METHOD(Timeval, add) {
   }
   wrapped_grpc_timeval *self = Z_WRAPPED_GRPC_TIMEVAL_P(getThis());
   wrapped_grpc_timeval *other = Z_WRAPPED_GRPC_TIMEVAL_P(other_obj);
-#if PHP_MAJOR_VERSION < 7
-  zval *sum =
+  zval *sum;
+  PHP_GRPC_MAKE_STD_ZVAL(sum);
+  sum =
       grpc_php_wrap_timeval(gpr_time_add(self->wrapped, other->wrapped)
                             TSRMLS_CC);
   RETURN_DESTROY_ZVAL(sum);
-#else
-  grpc_php_wrap_timeval(gpr_time_add(self->wrapped, other->wrapped),
-                        return_value);
-  RETURN_DESTROY_ZVAL(return_value);
-#endif
 }
 
 /**
@@ -186,16 +141,12 @@ PHP_METHOD(Timeval, subtract) {
   }
   wrapped_grpc_timeval *self = Z_WRAPPED_GRPC_TIMEVAL_P(getThis());
   wrapped_grpc_timeval *other = Z_WRAPPED_GRPC_TIMEVAL_P(other_obj);
-#if PHP_MAJOR_VERSION < 7
-  zval *diff =
+  zval *diff;
+  PHP_GRPC_MAKE_STD_ZVAL(diff);
+  diff =
       grpc_php_wrap_timeval(gpr_time_sub(self->wrapped, other->wrapped)
                             TSRMLS_CC);
   RETURN_DESTROY_ZVAL(diff);
-#else
-  grpc_php_wrap_timeval(gpr_time_sub(self->wrapped, other->wrapped),
-                        return_value);
-  RETURN_DESTROY_ZVAL(return_value);
-#endif
 }
 
 /**
@@ -255,13 +206,10 @@ PHP_METHOD(Timeval, similar) {
  * @return Timeval The current time
  */
 PHP_METHOD(Timeval, now) {
-#if PHP_MAJOR_VERSION < 7
-  zval *now = grpc_php_wrap_timeval(gpr_now(GPR_CLOCK_REALTIME) TSRMLS_CC);
+  zval *now;
+  PHP_GRPC_MAKE_STD_ZVAL(now);
+  now = grpc_php_wrap_timeval(gpr_now(GPR_CLOCK_REALTIME) TSRMLS_CC);
   RETURN_DESTROY_ZVAL(now);
-#else
-  grpc_php_wrap_timeval(gpr_now(GPR_CLOCK_REALTIME), return_value);
-  RETURN_DESTROY_ZVAL(return_value);
-#endif
 }
 
 /**
@@ -269,18 +217,13 @@ PHP_METHOD(Timeval, now) {
  * @return Timeval Zero length time interval
  */
 PHP_METHOD(Timeval, zero) {
-#if PHP_MAJOR_VERSION < 7
-  zval *grpc_php_timeval_zero =
+  zval *grpc_php_timeval_zero;
+  PHP_GRPC_MAKE_STD_ZVAL(grpc_php_timeval_zero);
+  grpc_php_timeval_zero =
       grpc_php_wrap_timeval(gpr_time_0(GPR_CLOCK_REALTIME) TSRMLS_CC);
   RETURN_ZVAL(grpc_php_timeval_zero,
               false, /* Copy original before returning? */
               true /* Destroy original before returning */);
-#else
-  grpc_php_wrap_timeval(gpr_time_0(GPR_CLOCK_REALTIME), return_value);
-  RETURN_ZVAL(return_value,
-              false, /* Copy original before returning? */
-              true /* Destroy original before returning */);
-#endif
 }
 
 /**
@@ -288,14 +231,11 @@ PHP_METHOD(Timeval, zero) {
  * @return Timeval Infinite future time value
  */
 PHP_METHOD(Timeval, infFuture) {
-#if PHP_MAJOR_VERSION < 7
-  zval *grpc_php_timeval_inf_future =
+  zval *grpc_php_timeval_inf_future;
+  PHP_GRPC_MAKE_STD_ZVAL(grpc_php_timeval_inf_future);
+  grpc_php_timeval_inf_future =
       grpc_php_wrap_timeval(gpr_inf_future(GPR_CLOCK_REALTIME) TSRMLS_CC);
   RETURN_DESTROY_ZVAL(grpc_php_timeval_inf_future);
-#else
-  grpc_php_wrap_timeval(gpr_inf_future(GPR_CLOCK_REALTIME), return_value);
-  RETURN_DESTROY_ZVAL(return_value);
-#endif
 }
 
 /**
@@ -303,14 +243,11 @@ PHP_METHOD(Timeval, infFuture) {
  * @return Timeval Infinite past time value
  */
 PHP_METHOD(Timeval, infPast) {
-#if PHP_MAJOR_VERSION < 7
-  zval *grpc_php_timeval_inf_past =
+  zval *grpc_php_timeval_inf_past;
+  PHP_GRPC_MAKE_STD_ZVAL(grpc_php_timeval_inf_past);
+  grpc_php_timeval_inf_past =
       grpc_php_wrap_timeval(gpr_inf_past(GPR_CLOCK_REALTIME) TSRMLS_CC);
   RETURN_DESTROY_ZVAL(grpc_php_timeval_inf_past);
-#else
-  grpc_php_wrap_timeval(gpr_inf_past(GPR_CLOCK_REALTIME), return_value);
-  RETURN_DESTROY_ZVAL(return_value);
-#endif
 }
 
 /**
@@ -341,13 +278,7 @@ void grpc_init_timeval(TSRMLS_D) {
   INIT_CLASS_ENTRY(ce, "Grpc\\Timeval", timeval_methods);
   ce.create_object = create_wrapped_grpc_timeval;
   grpc_ce_timeval = zend_register_internal_class(&ce TSRMLS_CC);
-#if PHP_MAJOR_VERSION >= 7
-  memcpy(&timeval_ce_handlers, zend_get_std_object_handlers(),
-         sizeof(zend_object_handlers));
-  timeval_ce_handlers.offset =
-    XtOffsetOf(wrapped_grpc_timeval, std);
-  timeval_ce_handlers.free_obj = free_wrapped_grpc_timeval;
-#endif
+  PHP_GRPC_INIT_HANDLER(wrapped_grpc_timeval, timeval_ce_handlers);
 }
 
 void grpc_shutdown_timeval(TSRMLS_D) {}
diff --git a/src/php/ext/grpc/timeval.h b/src/php/ext/grpc/timeval.h
index d362460c05..63a1d702f3 100755
--- a/src/php/ext/grpc/timeval.h
+++ b/src/php/ext/grpc/timeval.h
@@ -50,30 +50,24 @@
 extern zend_class_entry *grpc_ce_timeval;
 
 /* Wrapper struct for timeval that can be associated with a PHP object */
-#if PHP_MAJOR_VERSION < 7
-
-typedef struct wrapped_grpc_timeval {
-  zend_object std;
+PHP_GRPC_WRAP_OBJECT_START(wrapped_grpc_timeval)
   gpr_timespec wrapped;
-} wrapped_grpc_timeval;
+PHP_GRPC_WRAP_OBJECT_END(wrapped_grpc_timeval)
+
+#if PHP_MAJOR_VERSION < 7
 
 #define Z_WRAPPED_GRPC_TIMEVAL_P(zv) \
   (wrapped_grpc_timeval *)zend_object_store_get_object(zv TSRMLS_CC)
 
 #else
 
-typedef struct wrapped_grpc_timeval {
-  gpr_timespec wrapped;
-  zend_object std;
-} wrapped_grpc_timeval;
-
 static inline wrapped_grpc_timeval
 *wrapped_grpc_timeval_from_obj(zend_object *obj) {
   return (wrapped_grpc_timeval*)((char*)(obj) -
                                  XtOffsetOf(wrapped_grpc_timeval, std));
 }
 
-#define Z_WRAPPED_GRPC_TIMEVAL_P(zv)            \
+#define Z_WRAPPED_GRPC_TIMEVAL_P(zv) \
   wrapped_grpc_timeval_from_obj(Z_OBJ_P((zv)))
 
 #endif /* PHP_MAJOR_VERSION */
@@ -85,10 +79,6 @@ void grpc_init_timeval(TSRMLS_D);
 void grpc_shutdown_timeval(TSRMLS_D);
 
 /* Creates a Timeval object that wraps the given timeval struct */
-#if PHP_MAJOR_VERSION < 7
 zval *grpc_php_wrap_timeval(gpr_timespec wrapped TSRMLS_DC);
-#else
-void grpc_php_wrap_timeval(gpr_timespec wrapped, zval *timeval_object);
-#endif /* PHP_MAJOR_VERSION */
 
 #endif /* NET_GRPC_PHP_GRPC_TIMEVAL_H_ */
diff --git a/src/python/grpcio/grpc_core_dependencies.py b/src/python/grpcio/grpc_core_dependencies.py
index 283792d57d..a029005753 100644
--- a/src/python/grpcio/grpc_core_dependencies.py
+++ b/src/python/grpcio/grpc_core_dependencies.py
@@ -241,6 +241,7 @@ CORE_SOURCE_FILES = [
   'src/core/ext/transport/chttp2/server/insecure/server_chttp2_posix.c',
   'src/core/ext/transport/chttp2/client/insecure/channel_create.c',
   'src/core/ext/transport/chttp2/client/insecure/channel_create_posix.c',
+  'src/core/ext/lb_policy/grpclb/grpclb.c',
   'src/core/ext/lb_policy/grpclb/load_balancer_api.c',
   'src/core/ext/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c',
   'third_party/nanopb/pb_common.c',
diff --git a/src/ruby/.rubocop.yml b/src/ruby/.rubocop.yml
index 34bb477543..0f61ccfa81 100644
--- a/src/ruby/.rubocop.yml
+++ b/src/ruby/.rubocop.yml
@@ -5,8 +5,8 @@ inherit_from: .rubocop_todo.yml
 AllCops:
   Exclude:
     - 'bin/apis/**/*'
-    - 'bin/math.rb'
-    - 'bin/math_services.rb'
+    - 'bin/math_pb.rb'
+    - 'bin/math_services_pb.rb'
     - 'pb/grpc/health/v1/*'
     - 'pb/test/**/*'
 
diff --git a/src/ruby/bin/math_client.rb b/src/ruby/bin/math_client.rb
index d7e00e4293..1f238a798b 100755
--- a/src/ruby/bin/math_client.rb
+++ b/src/ruby/bin/math_client.rb
@@ -40,7 +40,7 @@ $LOAD_PATH.unshift(lib_dir) unless $LOAD_PATH.include?(lib_dir)
 $LOAD_PATH.unshift(this_dir) unless $LOAD_PATH.include?(this_dir)
 
 require 'grpc'
-require 'math_services'
+require 'math_services_pb'
 require 'optparse'
 
 include GRPC::Core::TimeConsts
diff --git a/src/ruby/bin/math.rb b/src/ruby/bin/math_pb.rb
index 60429a1505..60429a1505 100755..100644
--- a/src/ruby/bin/math.rb
+++ b/src/ruby/bin/math_pb.rb
diff --git a/src/ruby/bin/math_server.rb b/src/ruby/bin/math_server.rb
index 1ee4c5632d..751a6ebcab 100755
--- a/src/ruby/bin/math_server.rb
+++ b/src/ruby/bin/math_server.rb
@@ -42,7 +42,7 @@ $LOAD_PATH.unshift(this_dir) unless $LOAD_PATH.include?(this_dir)
 require 'forwardable'
 require 'grpc'
 require 'logger'
-require 'math_services'
+require 'math_services_pb'
 require 'optparse'
 
 # RubyLogger defines a logger for gRPC based on the standard ruby logger.
diff --git a/src/ruby/bin/math_services.rb b/src/ruby/bin/math_services_pb.rb
index 2b97602b6f..2ba1825d4f 100755..100644
--- a/src/ruby/bin/math_services.rb
+++ b/src/ruby/bin/math_services_pb.rb
@@ -32,7 +32,7 @@
 #
 
 require 'grpc'
-require 'math'
+require 'math_pb'
 
 module Math
   module Math
diff --git a/src/ruby/pb/grpc/health/checker.rb b/src/ruby/pb/grpc/health/checker.rb
index f7310d9289..4bce1744c4 100644
--- a/src/ruby/pb/grpc/health/checker.rb
+++ b/src/ruby/pb/grpc/health/checker.rb
@@ -28,7 +28,7 @@
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 require 'grpc'
-require 'grpc/health/v1/health_services'
+require 'grpc/health/v1/health_services_pb'
 require 'thread'
 
 module Grpc
diff --git a/src/ruby/pb/grpc/health/v1/health.rb b/src/ruby/pb/grpc/health/v1/health_pb.rb
index aa87a93918..aa87a93918 100644
--- a/src/ruby/pb/grpc/health/v1/health.rb
+++ b/src/ruby/pb/grpc/health/v1/health_pb.rb
diff --git a/src/ruby/pb/grpc/health/v1/health_services.rb b/src/ruby/pb/grpc/health/v1/health_services_pb.rb
index 68a3956f54..8cc01e91dc 100644
--- a/src/ruby/pb/grpc/health/v1/health_services.rb
+++ b/src/ruby/pb/grpc/health/v1/health_services_pb.rb
@@ -32,7 +32,7 @@
 #
 
 require 'grpc'
-require 'grpc/health/v1/health'
+require 'grpc/health/v1/health_pb'
 
 module Grpc
   module Health
diff --git a/src/ruby/pb/grpc/testing/duplicate/echo_duplicate_services.rb b/src/ruby/pb/grpc/testing/duplicate/echo_duplicate_services_pb.rb
index eb523ffa6f..e51c2f087a 100644
--- a/src/ruby/pb/grpc/testing/duplicate/echo_duplicate_services.rb
+++ b/src/ruby/pb/grpc/testing/duplicate/echo_duplicate_services_pb.rb
@@ -1,5 +1,5 @@
 # Generated by the protocol buffer compiler.  DO NOT EDIT!
-# Source: grpc/testing/duplicate/echo_duplicate.proto for package 'grpc.testing.duplicate'
+# Source: src/proto/grpc/testing/duplicate/echo_duplicate.proto for package 'grpc.testing.duplicate'
 # Original file comments:
 # Copyright 2015, Google Inc.
 # All rights reserved.
@@ -34,7 +34,7 @@
 #
 
 require 'grpc'
-require 'grpc/testing/duplicate/echo_duplicate'
+require 'src/proto/grpc/testing/duplicate/echo_duplicate_pb'
 
 module Grpc
   module Testing
diff --git a/src/ruby/pb/grpc/testing/metrics.rb b/src/ruby/pb/grpc/testing/metrics_pb.rb
index 3b3c8cd61b..77b6c90970 100644
--- a/src/ruby/pb/grpc/testing/metrics.rb
+++ b/src/ruby/pb/grpc/testing/metrics_pb.rb
@@ -1,5 +1,5 @@
 # Generated by the protocol buffer compiler.  DO NOT EDIT!
-# source: grpc/testing/metrics.proto
+# source: src/proto/grpc/testing/metrics.proto
 
 require 'google/protobuf'
 
diff --git a/src/ruby/pb/grpc/testing/metrics_services.rb b/src/ruby/pb/grpc/testing/metrics_services_pb.rb
index 467b7b3ee5..e46366b1fb 100644
--- a/src/ruby/pb/grpc/testing/metrics_services.rb
+++ b/src/ruby/pb/grpc/testing/metrics_services_pb.rb
@@ -1,5 +1,5 @@
 # Generated by the protocol buffer compiler.  DO NOT EDIT!
-# Source: grpc/testing/metrics.proto for package 'grpc.testing'
+# Source: src/proto/grpc/testing/metrics.proto for package 'grpc.testing'
 # Original file comments:
 # Copyright 2015-2016, Google Inc.
 # All rights reserved.
@@ -38,7 +38,7 @@
 # service.
 
 require 'grpc'
-require 'grpc/testing/metrics'
+require 'src/proto/grpc/testing/metrics_pb'
 
 module Grpc
   module Testing
diff --git a/src/ruby/pb/src/proto/grpc/testing/empty.rb b/src/ruby/pb/src/proto/grpc/testing/empty_pb.rb
index 9c2568d605..9c2568d605 100644
--- a/src/ruby/pb/src/proto/grpc/testing/empty.rb
+++ b/src/ruby/pb/src/proto/grpc/testing/empty_pb.rb
diff --git a/src/ruby/pb/src/proto/grpc/testing/messages.rb b/src/ruby/pb/src/proto/grpc/testing/messages_pb.rb
index e27ccd0dc0..e27ccd0dc0 100644
--- a/src/ruby/pb/src/proto/grpc/testing/messages.rb
+++ b/src/ruby/pb/src/proto/grpc/testing/messages_pb.rb
diff --git a/src/ruby/pb/src/proto/grpc/testing/test.rb b/src/ruby/pb/src/proto/grpc/testing/test_pb.rb
index 245b5ce00c..2cc9863031 100644
--- a/src/ruby/pb/src/proto/grpc/testing/test.rb
+++ b/src/ruby/pb/src/proto/grpc/testing/test_pb.rb
@@ -3,8 +3,8 @@
 
 require 'google/protobuf'
 
-require 'src/proto/grpc/testing/empty'
-require 'src/proto/grpc/testing/messages'
+require 'src/proto/grpc/testing/empty_pb'
+require 'src/proto/grpc/testing/messages_pb'
 Google::Protobuf::DescriptorPool.generated_pool.build do
 end
 
diff --git a/src/ruby/pb/src/proto/grpc/testing/test_services.rb b/src/ruby/pb/src/proto/grpc/testing/test_services_pb.rb
index 2652de5e6d..fde328e4c5 100644
--- a/src/ruby/pb/src/proto/grpc/testing/test_services.rb
+++ b/src/ruby/pb/src/proto/grpc/testing/test_services_pb.rb
@@ -35,7 +35,7 @@
 #
 
 require 'grpc'
-require 'src/proto/grpc/testing/test'
+require 'src/proto/grpc/testing/test_pb'
 
 module Grpc
   module Testing
diff --git a/src/ruby/pb/test/client.rb b/src/ruby/pb/test/client.rb
index 4c6d441dcb..1e3ae65630 100755
--- a/src/ruby/pb/test/client.rb
+++ b/src/ruby/pb/test/client.rb
@@ -52,9 +52,9 @@ require_relative '../../lib/grpc'
 require 'googleauth'
 require 'google/protobuf'
 
-require_relative '../src/proto/grpc/testing/empty'
-require_relative '../src/proto/grpc/testing/messages'
-require_relative '../src/proto/grpc/testing/test_services'
+require_relative '../src/proto/grpc/testing/empty_pb'
+require_relative '../src/proto/grpc/testing/messages_pb'
+require_relative '../src/proto/grpc/testing/test_services_pb'
 
 AUTH_ENV = Google::Auth::CredentialsLoader::ENV_VAR
 
diff --git a/src/ruby/pb/test/server.rb b/src/ruby/pb/test/server.rb
index 11ee3d465d..0808121661 100755
--- a/src/ruby/pb/test/server.rb
+++ b/src/ruby/pb/test/server.rb
@@ -50,9 +50,9 @@ require 'optparse'
 
 require 'grpc'
 
-require_relative '../src/proto/grpc/testing/empty'
-require_relative '../src/proto/grpc/testing/messages'
-require_relative '../src/proto/grpc/testing/test_services'
+require_relative '../src/proto/grpc/testing/empty_pb'
+require_relative '../src/proto/grpc/testing/messages_pb'
+require_relative '../src/proto/grpc/testing/test_services_pb'
 
 # DebugIsTruncated extends the default Logger to truncate debug messages
 class DebugIsTruncated < Logger
diff --git a/src/ruby/qps/client.rb b/src/ruby/qps/client.rb
index 917b01271e..7ed648acef 100644
--- a/src/ruby/qps/client.rb
+++ b/src/ruby/qps/client.rb
@@ -38,7 +38,7 @@ $LOAD_PATH.unshift(this_dir) unless $LOAD_PATH.include?(this_dir)
 
 require 'grpc'
 require 'histogram'
-require 'src/proto/grpc/testing/services_services'
+require 'src/proto/grpc/testing/services_services_pb'
 
 class Poisson
   def interarrival
diff --git a/src/ruby/qps/server.rb b/src/ruby/qps/server.rb
index 52a89ce847..cd98ee1fd9 100644
--- a/src/ruby/qps/server.rb
+++ b/src/ruby/qps/server.rb
@@ -38,9 +38,9 @@ $LOAD_PATH.unshift(this_dir) unless $LOAD_PATH.include?(this_dir)
 
 require 'grpc'
 require 'qps-common'
-require 'src/proto/grpc/testing/messages'
-require 'src/proto/grpc/testing/services_services'
-require 'src/proto/grpc/testing/stats'
+require 'src/proto/grpc/testing/messages_pb'
+require 'src/proto/grpc/testing/services_services_pb'
+require 'src/proto/grpc/testing/stats_pb'
 
 class BenchmarkServiceImpl < Grpc::Testing::BenchmarkService::Service
   def unary_call(req, _call)
diff --git a/src/ruby/qps/src/proto/grpc/testing/control.rb b/src/ruby/qps/src/proto/grpc/testing/control_pb.rb
index 958fca320b..02207a2b5d 100644
--- a/src/ruby/qps/src/proto/grpc/testing/control.rb
+++ b/src/ruby/qps/src/proto/grpc/testing/control_pb.rb
@@ -3,8 +3,8 @@
 
 require 'google/protobuf'
 
-require 'src/proto/grpc/testing/payloads'
-require 'src/proto/grpc/testing/stats'
+require 'src/proto/grpc/testing/payloads_pb'
+require 'src/proto/grpc/testing/stats_pb'
 Google::Protobuf::DescriptorPool.generated_pool.build do
   add_message "grpc.testing.PoissonParams" do
     optional :offered_load, :double, 1
@@ -109,6 +109,8 @@ Google::Protobuf::DescriptorPool.generated_pool.build do
     repeated :server_stats, :message, 4, "grpc.testing.ServerStats"
     repeated :server_cores, :int32, 5
     optional :summary, :message, 6, "grpc.testing.ScenarioResultSummary"
+    repeated :client_success, :bool, 7
+    repeated :server_success, :bool, 8
   end
   add_enum "grpc.testing.ClientType" do
     value :SYNC_CLIENT, 0
diff --git a/src/ruby/qps/src/proto/grpc/testing/messages.rb b/src/ruby/qps/src/proto/grpc/testing/messages_pb.rb
index e27ccd0dc0..e27ccd0dc0 100644
--- a/src/ruby/qps/src/proto/grpc/testing/messages.rb
+++ b/src/ruby/qps/src/proto/grpc/testing/messages_pb.rb
diff --git a/src/ruby/qps/src/proto/grpc/testing/payloads.rb b/src/ruby/qps/src/proto/grpc/testing/payloads_pb.rb
index ae8855f685..ae8855f685 100644
--- a/src/ruby/qps/src/proto/grpc/testing/payloads.rb
+++ b/src/ruby/qps/src/proto/grpc/testing/payloads_pb.rb
diff --git a/src/ruby/qps/src/proto/grpc/testing/services.rb b/src/ruby/qps/src/proto/grpc/testing/services_pb.rb
index b2675c2afe..5ce13bf8b0 100644
--- a/src/ruby/qps/src/proto/grpc/testing/services.rb
+++ b/src/ruby/qps/src/proto/grpc/testing/services_pb.rb
@@ -3,8 +3,8 @@
 
 require 'google/protobuf'
 
-require 'src/proto/grpc/testing/messages'
-require 'src/proto/grpc/testing/control'
+require 'src/proto/grpc/testing/messages_pb'
+require 'src/proto/grpc/testing/control_pb'
 Google::Protobuf::DescriptorPool.generated_pool.build do
 end
 
diff --git a/src/ruby/qps/src/proto/grpc/testing/services_services.rb b/src/ruby/qps/src/proto/grpc/testing/services_services_pb.rb
index 94b9a1e164..bdbb9c86d0 100644
--- a/src/ruby/qps/src/proto/grpc/testing/services_services.rb
+++ b/src/ruby/qps/src/proto/grpc/testing/services_services_pb.rb
@@ -34,7 +34,7 @@
 # of unary/streaming requests/responses.
 
 require 'grpc'
-require 'src/proto/grpc/testing/services'
+require 'src/proto/grpc/testing/services_pb'
 
 module Grpc
   module Testing
diff --git a/src/ruby/qps/src/proto/grpc/testing/stats.rb b/src/ruby/qps/src/proto/grpc/testing/stats_pb.rb
index 41f75bedf0..41f75bedf0 100644
--- a/src/ruby/qps/src/proto/grpc/testing/stats.rb
+++ b/src/ruby/qps/src/proto/grpc/testing/stats_pb.rb
diff --git a/src/ruby/qps/worker.rb b/src/ruby/qps/worker.rb
index 665fb86352..12b8087ca0 100755
--- a/src/ruby/qps/worker.rb
+++ b/src/ruby/qps/worker.rb
@@ -44,7 +44,7 @@ require 'facter'
 require 'client'
 require 'qps-common'
 require 'server'
-require 'src/proto/grpc/testing/services_services'
+require 'src/proto/grpc/testing/services_services_pb'
 
 class WorkerServiceImpl < Grpc::Testing::WorkerService::Service
   def cpu_cores
diff --git a/src/ruby/spec/pb/duplicate/codegen_spec.rb b/src/ruby/spec/pb/duplicate/codegen_spec.rb
index 54c136c510..ea0240965c 100644
--- a/src/ruby/spec/pb/duplicate/codegen_spec.rb
+++ b/src/ruby/spec/pb/duplicate/codegen_spec.rb
@@ -44,7 +44,7 @@ describe 'Ping protobuf code generation' do
       # Get the current content
       service_path = File.join(root_dir, 'src', 'ruby', 'pb', 'grpc',
                                'testing', 'duplicate',
-                               'echo_duplicate_services.rb')
+                               'echo_duplicate_services_pb.rb')
       want = nil
       File.open(service_path) { |f| want = f.read }
 
@@ -54,7 +54,7 @@ describe 'Ping protobuf code generation' do
       got = nil
       Dir.mktmpdir do |tmp_dir|
         gen_out = File.join(tmp_dir, 'src', 'proto', 'grpc', 'testing',
-                            'duplicate', 'echo_duplicate_services.rb')
+                            'duplicate', 'echo_duplicate_services_pb.rb')
         pid = spawn(
           'protoc',
           '-I.',
diff --git a/src/ruby/spec/pb/health/checker_spec.rb b/src/ruby/spec/pb/health/checker_spec.rb
index de11c9fedf..1b2fa96827 100644
--- a/src/ruby/spec/pb/health/checker_spec.rb
+++ b/src/ruby/spec/pb/health/checker_spec.rb
@@ -28,7 +28,7 @@
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 require 'grpc'
-require 'grpc/health/v1/health'
+require 'grpc/health/v1/health_pb'
 require 'grpc/health/checker'
 require 'open3'
 require 'tmpdir'
@@ -43,7 +43,7 @@ describe 'Health protobuf code generation' do
       skip 'protoc || grpc_ruby_plugin missing, cannot verify health code-gen'
     else
       it 'should already be loaded indirectly i.e, used by the other specs' do
-        expect(require('grpc/health/v1/health_services')).to be(false)
+        expect(require('grpc/health/v1/health_services_pb')).to be(false)
       end
 
       it 'should have the same content as created by code generation' do
@@ -52,7 +52,7 @@ describe 'Health protobuf code generation' do
 
         # Get the current content
         service_path = File.join(root_dir, 'ruby', 'pb', 'grpc',
-                                 'health', 'v1', 'health_services.rb')
+                                 'health', 'v1', 'health_services_pb.rb')
         want = nil
         File.open(service_path) { |f| want = f.read }
 
@@ -62,7 +62,7 @@ describe 'Health protobuf code generation' do
         got = nil
         Dir.mktmpdir do |tmp_dir|
           gen_out = File.join(tmp_dir, 'grpc', 'health', 'v1',
-                              'health_services.rb')
+                              'health_services_pb.rb')
           pid = spawn(
             'protoc',
             '-I.',
diff --git a/src/ruby/stress/metrics_server.rb b/src/ruby/stress/metrics_server.rb
index 13638c4d21..2b7f78577d 100644
--- a/src/ruby/stress/metrics_server.rb
+++ b/src/ruby/stress/metrics_server.rb
@@ -27,8 +27,8 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-require_relative '../pb/grpc/testing/metrics.rb'
-require_relative '../pb/grpc/testing/metrics_services.rb'
+require_relative '../pb/grpc/testing/metrics_pb.rb'
+require_relative '../pb/grpc/testing/metrics_services_pb.rb'
 
 class Gauge
   def get_name
diff --git a/src/ruby/tools/bin/grpc_tools_ruby_protoc.rb b/src/ruby/tools/bin/grpc_tools_ruby_protoc
index 3a2a5b8dc9..dab06e7958 100755
--- a/src/ruby/tools/bin/grpc_tools_ruby_protoc.rb
+++ b/src/ruby/tools/bin/grpc_tools_ruby_protoc
@@ -32,10 +32,17 @@ require 'rbconfig'
 
 require_relative '../os_check'
 
-protoc_name = 'protoc' + RbConfig::CONFIG['EXEEXT']
+ext = RbConfig::CONFIG['EXEEXT']
 
-protoc_path = File.join(File.dirname(__FILE__),
-                        RbConfig::CONFIG['host_cpu'] + '-' + OS.os_name,
-                        protoc_name)
+protoc_name = 'protoc' + ext
 
-exec([ protoc_path, protoc_path ], *ARGV)
+plugin_name = 'grpc_ruby_plugin' + ext
+
+protoc_dir = File.join(File.dirname(__FILE__),
+                       RbConfig::CONFIG['host_cpu'] + '-' + OS.os_name)
+
+protoc_path = File.join(protoc_dir, protoc_name)
+
+plugin_path = File.join(protoc_dir, plugin_name)
+
+exec([ protoc_path, protoc_path ], "--plugin=protoc-gen-grpc=#{plugin_path}", *ARGV)
diff --git a/src/ruby/tools/bin/grpc_tools_ruby_protoc_plugin.rb b/src/ruby/tools/bin/grpc_tools_ruby_protoc_plugin
index 4b296dedc7..4b296dedc7 100755
--- a/src/ruby/tools/bin/grpc_tools_ruby_protoc_plugin.rb
+++ b/src/ruby/tools/bin/grpc_tools_ruby_protoc_plugin
diff --git a/src/ruby/tools/grpc-tools.gemspec b/src/ruby/tools/grpc-tools.gemspec
index 9fa4b66392..68e2a7a113 100644
--- a/src/ruby/tools/grpc-tools.gemspec
+++ b/src/ruby/tools/grpc-tools.gemspec
@@ -18,5 +18,5 @@ Gem::Specification.new do |s|
 
   s.platform = Gem::Platform::RUBY
 
-  s.executables = %w( grpc_tools_ruby_protoc.rb grpc_tools_ruby_protoc_plugin.rb )
+  s.executables = %w( grpc_tools_ruby_protoc grpc_tools_ruby_protoc_plugin )
 end