Merge github.com:grpc/grpc into tfix2

1 files changed, 358 insertions, 0 deletions

diff --git a/test/core/end2end/dualstack_socket_test.cc b/test/core/end2end/dualstack_socket_test.cc
new file mode 100644
index 0000000000..1e02116e4c
--- /dev/null
+++ b/test/core/end2end/dualstack_socket_test.cc
@@ -0,0 +1,358 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include "src/core/lib/iomgr/port.h"
+
+// This test won't work except with posix sockets enabled
+#ifdef GRPC_POSIX_SOCKET
+
+#include <string.h>
+
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/host_port.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/iomgr/socket_utils_posix.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+#include "src/core/lib/support/string.h"
+#include "test/core/end2end/cq_verifier.h"
+#include "test/core/util/port.h"
+#include "test/core/util/test_config.h"
+
+/* This test exercises IPv4, IPv6, and dualstack sockets in various ways. */
+
+static void* tag(intptr_t i) { return (void*)i; }
+
+static gpr_timespec ms_from_now(int ms) {
+  return grpc_timeout_milliseconds_to_deadline(ms);
+}
+
+static void drain_cq(grpc_completion_queue* cq) {
+  grpc_event ev;
+  do {
+    ev = grpc_completion_queue_next(cq, ms_from_now(5000), NULL);
+  } while (ev.type != GRPC_QUEUE_SHUTDOWN);
+}
+
+static void do_nothing(void* ignored) {}
+
+void test_connect(const char* server_host, const char* client_host, int port,
+                  int expect_ok) {
+  char* client_hostport;
+  char* server_hostport;
+  grpc_channel* client;
+  grpc_server* server;
+  grpc_completion_queue* cq;
+  grpc_completion_queue* shutdown_cq;
+  grpc_call* c;
+  grpc_call* s;
+  cq_verifier* cqv;
+  gpr_timespec deadline;
+  int got_port;
+  grpc_op ops[6];
+  grpc_op* op;
+  grpc_metadata_array initial_metadata_recv;
+  grpc_metadata_array trailing_metadata_recv;
+  grpc_metadata_array request_metadata_recv;
+  grpc_status_code status;
+  grpc_call_error error;
+  grpc_slice details;
+  int was_cancelled = 2;
+  grpc_call_details call_details;
+  char* peer;
+  int picked_port = 0;
+
+  if (port == 0) {
+    port = grpc_pick_unused_port_or_die();
+    picked_port = 1;
+  }
+
+  gpr_join_host_port(&server_hostport, server_host, port);
+
+  grpc_metadata_array_init(&initial_metadata_recv);
+  grpc_metadata_array_init(&trailing_metadata_recv);
+  grpc_metadata_array_init(&request_metadata_recv);
+  grpc_call_details_init(&call_details);
+
+  /* Create server. */
+  cq = grpc_completion_queue_create_for_next(NULL);
+  server = grpc_server_create(NULL, NULL);
+  grpc_server_register_completion_queue(server, cq, NULL);
+  GPR_ASSERT((got_port = grpc_server_add_insecure_http2_port(
+                  server, server_hostport)) > 0);
+  if (port == 0) {
+    port = got_port;
+  } else {
+    GPR_ASSERT(port == got_port);
+  }
+  grpc_server_start(server);
+  cqv = cq_verifier_create(cq);
+
+  /* Create client. */
+  if (client_host[0] == 'i') {
+    /* for ipv4:/ipv6: addresses, concatenate the port to each of the parts */
+    size_t i;
+    grpc_slice uri_slice;
+    grpc_slice_buffer uri_parts;
+    char** hosts_with_port;
+
+    uri_slice =
+        grpc_slice_new((char*)client_host, strlen(client_host), do_nothing);
+    grpc_slice_buffer_init(&uri_parts);
+    grpc_slice_split(uri_slice, ",", &uri_parts);
+    hosts_with_port =
+        static_cast<char**>(gpr_malloc(sizeof(char*) * uri_parts.count));
+    for (i = 0; i < uri_parts.count; i++) {
+      char* uri_part_str = grpc_slice_to_c_string(uri_parts.slices[i]);
+      gpr_asprintf(&hosts_with_port[i], "%s:%d", uri_part_str, port);
+      gpr_free(uri_part_str);
+    }
+    client_hostport = gpr_strjoin_sep((const char**)hosts_with_port,
+                                      uri_parts.count, ",", NULL);
+    for (i = 0; i < uri_parts.count; i++) {
+      gpr_free(hosts_with_port[i]);
+    }
+    gpr_free(hosts_with_port);
+    grpc_slice_buffer_destroy(&uri_parts);
+    grpc_slice_unref(uri_slice);
+  } else {
+    gpr_join_host_port(&client_hostport, client_host, port);
+  }
+  client = grpc_insecure_channel_create(client_hostport, NULL, NULL);
+
+  gpr_log(GPR_INFO, "Testing with server=%s client=%s (expecting %s)",
+          server_hostport, client_hostport, expect_ok ? "success" : "failure");
+
+  gpr_free(client_hostport);
+  gpr_free(server_hostport);
+
+  if (expect_ok) {
+    /* Normal deadline, shouldn't be reached. */
+    deadline = ms_from_now(60000);
+  } else {
+    /* Give up faster when failure is expected.
+       BUG: Setting this to 1000 reveals a memory leak (b/18608927). */
+    deadline = ms_from_now(1500);
+  }
+
+  /* Send a trivial request. */
+  grpc_slice host = grpc_slice_from_static_string("foo.test.google.fr");
+  c = grpc_channel_create_call(client, NULL, GRPC_PROPAGATE_DEFAULTS, cq,
+                               grpc_slice_from_static_string("/foo"), &host,
+                               deadline, NULL);
+  GPR_ASSERT(c);
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  op->data.send_initial_metadata.count = 0;
+  op->flags = expect_ok ? GRPC_INITIAL_METADATA_WAIT_FOR_READY : 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_INITIAL_METADATA;
+  op->data.recv_initial_metadata.recv_initial_metadata = &initial_metadata_recv;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
+  op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv;
+  op->data.recv_status_on_client.status = &status;
+  op->data.recv_status_on_client.status_details = &details;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  error = grpc_call_start_batch(c, ops, (size_t)(op - ops), tag(1), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  if (expect_ok) {
+    /* Check for a successful request. */
+    error = grpc_server_request_call(server, &s, &call_details,
+                                     &request_metadata_recv, cq, cq, tag(101));
+    GPR_ASSERT(GRPC_CALL_OK == error);
+    CQ_EXPECT_COMPLETION(cqv, tag(101), 1);
+    cq_verify(cqv);
+
+    memset(ops, 0, sizeof(ops));
+    op = ops;
+    op->op = GRPC_OP_SEND_INITIAL_METADATA;
+    op->data.send_initial_metadata.count = 0;
+    op->flags = 0;
+    op++;
+    op->op = GRPC_OP_SEND_STATUS_FROM_SERVER;
+    op->data.send_status_from_server.trailing_metadata_count = 0;
+    op->data.send_status_from_server.status = GRPC_STATUS_UNIMPLEMENTED;
+    grpc_slice status_details = grpc_slice_from_static_string("xyz");
+    op->data.send_status_from_server.status_details = &status_details;
+    op->flags = 0;
+    op++;
+    op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
+    op->data.recv_close_on_server.cancelled = &was_cancelled;
+    op->flags = 0;
+    op++;
+    error = grpc_call_start_batch(s, ops, (size_t)(op - ops), tag(102), NULL);
+    GPR_ASSERT(GRPC_CALL_OK == error);
+
+    CQ_EXPECT_COMPLETION(cqv, tag(102), 1);
+    CQ_EXPECT_COMPLETION(cqv, tag(1), 1);
+    cq_verify(cqv);
+
+    peer = grpc_call_get_peer(c);
+    gpr_log(GPR_DEBUG, "got peer: '%s'", peer);
+    gpr_free(peer);
+
+    GPR_ASSERT(status == GRPC_STATUS_UNIMPLEMENTED);
+    GPR_ASSERT(0 == grpc_slice_str_cmp(details, "xyz"));
+    GPR_ASSERT(0 == grpc_slice_str_cmp(call_details.method, "/foo"));
+    GPR_ASSERT(0 ==
+               grpc_slice_str_cmp(call_details.host, "foo.test.google.fr"));
+    GPR_ASSERT(was_cancelled == 1);
+
+    grpc_call_unref(s);
+  } else {
+    /* Check for a failed connection. */
+    CQ_EXPECT_COMPLETION(cqv, tag(1), 1);
+    cq_verify(cqv);
+
+    GPR_ASSERT(status == GRPC_STATUS_UNAVAILABLE);
+  }
+
+  grpc_call_unref(c);
+
+  cq_verifier_destroy(cqv);
+
+  /* Destroy client. */
+  grpc_channel_destroy(client);
+
+  /* Destroy server. */
+  shutdown_cq = grpc_completion_queue_create_for_pluck(NULL);
+  grpc_server_shutdown_and_notify(server, shutdown_cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(shutdown_cq, tag(1000),
+                                         grpc_timeout_seconds_to_deadline(5),
+                                         NULL)
+                 .type == GRPC_OP_COMPLETE);
+  grpc_server_destroy(server);
+  grpc_completion_queue_destroy(shutdown_cq);
+  grpc_completion_queue_shutdown(cq);
+  drain_cq(cq);
+  grpc_completion_queue_destroy(cq);
+
+  grpc_metadata_array_destroy(&initial_metadata_recv);
+  grpc_metadata_array_destroy(&trailing_metadata_recv);
+  grpc_metadata_array_destroy(&request_metadata_recv);
+
+  grpc_call_details_destroy(&call_details);
+  grpc_slice_unref(details);
+  if (picked_port) {
+    grpc_recycle_unused_port(port);
+  }
+}
+
+int external_dns_works(const char* host) {
+  grpc_resolved_addresses* res = NULL;
+  grpc_error* error = grpc_blocking_resolve_address(host, "80", &res);
+  GRPC_ERROR_UNREF(error);
+  if (res != NULL) {
+    grpc_resolved_addresses_destroy(res);
+    return 1;
+  }
+  return 0;
+}
+
+int main(int argc, char** argv) {
+  int do_ipv6 = 1;
+
+  grpc_test_init(argc, argv);
+  grpc_init();
+
+  if (!grpc_ipv6_loopback_available()) {
+    gpr_log(GPR_INFO, "Can't bind to ::1.  Skipping IPv6 tests.");
+    do_ipv6 = 0;
+  }
+
+  /* For coverage, test with and without dualstack sockets. */
+  for (grpc_forbid_dualstack_sockets_for_testing = 0;
+       grpc_forbid_dualstack_sockets_for_testing <= 1;
+       grpc_forbid_dualstack_sockets_for_testing++) {
+    /* :: and 0.0.0.0 are handled identically. */
+    test_connect("::", "127.0.0.1", 0, 1);
+    test_connect("::", "::ffff:127.0.0.1", 0, 1);
+    test_connect("::", "ipv4:127.0.0.1", 0, 1);
+    test_connect("::", "ipv6:[::ffff:127.0.0.1]", 0, 1);
+    test_connect("::", "localhost", 0, 1);
+    test_connect("0.0.0.0", "127.0.0.1", 0, 1);
+    test_connect("0.0.0.0", "::ffff:127.0.0.1", 0, 1);
+    test_connect("0.0.0.0", "ipv4:127.0.0.1", 0, 1);
+    test_connect("0.0.0.0", "ipv4:127.0.0.1,127.0.0.2,127.0.0.3", 0, 1);
+    test_connect("0.0.0.0", "ipv6:[::ffff:127.0.0.1],[::ffff:127.0.0.2]", 0, 1);
+    test_connect("0.0.0.0", "localhost", 0, 1);
+    if (do_ipv6) {
+      test_connect("::", "::1", 0, 1);
+      test_connect("0.0.0.0", "::1", 0, 1);
+      test_connect("::", "ipv6:[::1]", 0, 1);
+      test_connect("0.0.0.0", "ipv6:[::1]", 0, 1);
+    }
+
+    /* These only work when the families agree. */
+    test_connect("127.0.0.1", "127.0.0.1", 0, 1);
+    test_connect("127.0.0.1", "ipv4:127.0.0.1", 0, 1);
+    if (do_ipv6) {
+      test_connect("::1", "::1", 0, 1);
+      test_connect("::1", "127.0.0.1", 0, 0);
+      test_connect("127.0.0.1", "::1", 0, 0);
+      test_connect("::1", "ipv6:[::1]", 0, 1);
+      test_connect("::1", "ipv4:127.0.0.1", 0, 0);
+      test_connect("127.0.0.1", "ipv6:[::1]", 0, 0);
+    }
+
+    if (!external_dns_works("loopback46.unittest.grpc.io")) {
+      gpr_log(GPR_INFO, "Skipping tests that depend on *.unittest.grpc.io.");
+    } else {
+      test_connect("loopback46.unittest.grpc.io", "loopback4.unittest.grpc.io",
+                   0, 1);
+      test_connect("loopback4.unittest.grpc.io", "loopback46.unittest.grpc.io",
+                   0, 1);
+      if (do_ipv6) {
+        test_connect("loopback46.unittest.grpc.io",
+                     "loopback6.unittest.grpc.io", 0, 1);
+        test_connect("loopback6.unittest.grpc.io",
+                     "loopback46.unittest.grpc.io", 0, 1);
+        test_connect("loopback4.unittest.grpc.io", "loopback6.unittest.grpc.io",
+                     0, 0);
+        test_connect("loopback6.unittest.grpc.io", "loopback4.unittest.grpc.io",
+                     0, 0);
+      }
+    }
+  }
+
+  grpc_shutdown();
+
+  return 0;
+}
+
+#else /* GRPC_POSIX_SOCKET */
+
+int main(int argc, char** argv) { return 1; }
+
+#endif /* GRPC_POSIX_SOCKET */