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diff --git a/test/core/end2end/goaway_server_test.c b/test/core/end2end/goaway_server_test.c
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+/*
+ *
+ * Copyright 2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <string.h>
+#include "src/core/lib/iomgr/resolve_address.h"
+#include "src/core/lib/iomgr/sockaddr.h"
+#include "test/core/end2end/cq_verifier.h"
+#include "test/core/util/port.h"
+#include "test/core/util/test_config.h"
+
+static void *tag(intptr_t i) { return (void *)i; }
+
+static gpr_mu g_mu;
+static int g_resolve_port = -1;
+static grpc_resolved_addresses *(*iomgr_resolve_address)(
+ const char *name, const char *default_port);
+
+static void set_resolve_port(int port) {
+ gpr_mu_lock(&g_mu);
+ g_resolve_port = port;
+ gpr_mu_unlock(&g_mu);
+}
+
+static grpc_resolved_addresses *my_resolve_address(const char *name,
+ const char *addr) {
+ if (0 != strcmp(name, "test")) {
+ return iomgr_resolve_address(name, addr);
+ }
+
+ gpr_mu_lock(&g_mu);
+ if (g_resolve_port < 0) {
+ gpr_mu_unlock(&g_mu);
+ return NULL;
+ } else {
+ grpc_resolved_addresses *addrs = gpr_malloc(sizeof(*addrs));
+ addrs->naddrs = 1;
+ addrs->addrs = gpr_malloc(sizeof(*addrs->addrs));
+ memset(addrs->addrs, 0, sizeof(*addrs->addrs));
+ struct sockaddr_in *sa = (struct sockaddr_in *)addrs->addrs[0].addr;
+ sa->sin_family = AF_INET;
+ sa->sin_addr.s_addr = htonl(0x7f000001);
+ sa->sin_port = htons((uint16_t)g_resolve_port);
+ addrs->addrs[0].len = sizeof(*sa);
+ gpr_mu_unlock(&g_mu);
+ return addrs;
+ }
+}
+
+int main(int argc, char **argv) {
+ grpc_completion_queue *cq;
+ cq_verifier *cqv;
+ grpc_op ops[6];
+ grpc_op *op;
+
+ grpc_test_init(argc, argv);
+
+ gpr_mu_init(&g_mu);
+ iomgr_resolve_address = grpc_blocking_resolve_address;
+ grpc_blocking_resolve_address = my_resolve_address;
+ grpc_init();
+
+ int was_cancelled1;
+ int was_cancelled2;
+
+ grpc_metadata_array trailing_metadata_recv1;
+ grpc_metadata_array request_metadata1;
+ grpc_call_details request_details1;
+ grpc_status_code status1;
+ char *details1 = NULL;
+ size_t details_capacity1 = 0;
+ grpc_metadata_array_init(&trailing_metadata_recv1);
+ grpc_metadata_array_init(&request_metadata1);
+ grpc_call_details_init(&request_details1);
+
+ grpc_metadata_array trailing_metadata_recv2;
+ grpc_metadata_array request_metadata2;
+ grpc_call_details request_details2;
+ grpc_status_code status2;
+ char *details2 = NULL;
+ size_t details_capacity2 = 0;
+ grpc_metadata_array_init(&trailing_metadata_recv2);
+ grpc_metadata_array_init(&request_metadata2);
+ grpc_call_details_init(&request_details2);
+
+ cq = grpc_completion_queue_create(NULL);
+ cqv = cq_verifier_create(cq);
+
+ /* reserve two ports */
+ int port1 = grpc_pick_unused_port_or_die();
+ int port2 = grpc_pick_unused_port_or_die();
+
+ char *addr;
+
+ /* create a channel that picks first amongst the servers */
+ grpc_channel *chan = grpc_insecure_channel_create("test", NULL, NULL);
+ /* and an initial call to them */
+ grpc_call *call1 = grpc_channel_create_call(
+ chan, NULL, GRPC_PROPAGATE_DEFAULTS, cq, "/foo", "127.0.0.1",
+ GRPC_TIMEOUT_SECONDS_TO_DEADLINE(20), NULL);
+ /* send initial metadata to probe connectivity */
+ op = ops;
+ op->op = GRPC_OP_SEND_INITIAL_METADATA;
+ op->data.send_initial_metadata.count = 0;
+ op->flags = 0;
+ op->reserved = NULL;
+ op++;
+ GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(call1, ops,
+ (size_t)(op - ops),
+ tag(0x101), NULL));
+ /* and receive status to probe termination */
+ op = ops;
+ op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
+ op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv1;
+ op->data.recv_status_on_client.status = &status1;
+ op->data.recv_status_on_client.status_details = &details1;
+ op->data.recv_status_on_client.status_details_capacity = &details_capacity1;
+ op->flags = 0;
+ op->reserved = NULL;
+ op++;
+ GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(call1, ops,
+ (size_t)(op - ops),
+ tag(0x102), NULL));
+
+ /* bring a server up on the first port */
+ grpc_server *server1 = grpc_server_create(NULL, NULL);
+ gpr_asprintf(&addr, "127.0.0.1:%d", port1);
+ grpc_server_add_insecure_http2_port(server1, addr);
+ grpc_server_register_completion_queue(server1, cq, NULL);
+ gpr_free(addr);
+ grpc_server_start(server1);
+
+ /* request a call to the server */
+ grpc_call *server_call1;
+ GPR_ASSERT(GRPC_CALL_OK ==
+ grpc_server_request_call(server1, &server_call1, &request_details1,
+ &request_metadata1, cq, cq, tag(0x301)));
+
+ set_resolve_port(port1);
+
+ /* first call should now start */
+ cq_expect_completion(cqv, tag(0x101), 1);
+ cq_expect_completion(cqv, tag(0x301), 1);
+ cq_verify(cqv);
+
+ GPR_ASSERT(GRPC_CHANNEL_READY ==
+ grpc_channel_check_connectivity_state(chan, 0));
+ grpc_channel_watch_connectivity_state(chan, GRPC_CHANNEL_READY,
+ gpr_inf_future(GPR_CLOCK_REALTIME), cq,
+ tag(0x9999));
+
+ /* listen for close on the server call to probe for finishing */
+ op = ops;
+ op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
+ op->data.recv_close_on_server.cancelled = &was_cancelled1;
+ op->flags = 0;
+ op++;
+ GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(server_call1, ops,
+ (size_t)(op - ops),
+ tag(0x302), NULL));
+
+ /* shutdown first server:
+ * we should see a connectivity change and then nothing */
+ set_resolve_port(-1);
+ grpc_server_shutdown_and_notify(server1, cq, tag(0xdead1));
+ cq_expect_completion(cqv, tag(0x9999), 1);
+ cq_verify(cqv);
+ cq_verify_empty(cqv);
+
+ /* and a new call: should go through to server2 when we start it */
+ grpc_call *call2 = grpc_channel_create_call(
+ chan, NULL, GRPC_PROPAGATE_DEFAULTS, cq, "/foo", "127.0.0.1",
+ GRPC_TIMEOUT_SECONDS_TO_DEADLINE(20), NULL);
+ /* send initial metadata to probe connectivity */
+ op = ops;
+ op->op = GRPC_OP_SEND_INITIAL_METADATA;
+ op->data.send_initial_metadata.count = 0;
+ op->flags = 0;
+ op->reserved = NULL;
+ op++;
+ GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(call2, ops,
+ (size_t)(op - ops),
+ tag(0x201), NULL));
+ /* and receive status to probe termination */
+ op = ops;
+ op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
+ op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv2;
+ op->data.recv_status_on_client.status = &status2;
+ op->data.recv_status_on_client.status_details = &details2;
+ op->data.recv_status_on_client.status_details_capacity = &details_capacity2;
+ op->flags = 0;
+ op->reserved = NULL;
+ op++;
+ GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(call2, ops,
+ (size_t)(op - ops),
+ tag(0x202), NULL));
+
+ /* and bring up second server */
+ set_resolve_port(port2);
+ grpc_server *server2 = grpc_server_create(NULL, NULL);
+ gpr_asprintf(&addr, "127.0.0.1:%d", port2);
+ grpc_server_add_insecure_http2_port(server2, addr);
+ grpc_server_register_completion_queue(server2, cq, NULL);
+ gpr_free(addr);
+ grpc_server_start(server2);
+
+ /* request a call to the server */
+ grpc_call *server_call2;
+ GPR_ASSERT(GRPC_CALL_OK ==
+ grpc_server_request_call(server2, &server_call2, &request_details2,
+ &request_metadata2, cq, cq, tag(0x401)));
+
+ /* second call should now start */
+ cq_expect_completion(cqv, tag(0x201), 1);
+ cq_expect_completion(cqv, tag(0x401), 1);
+ cq_verify(cqv);
+
+ /* listen for close on the server call to probe for finishing */
+ op = ops;
+ op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
+ op->data.recv_close_on_server.cancelled = &was_cancelled2;
+ op->flags = 0;
+ op++;
+ GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(server_call2, ops,
+ (size_t)(op - ops),
+ tag(0x402), NULL));
+
+ /* shutdown second server: we should see nothing */
+ grpc_server_shutdown_and_notify(server2, cq, tag(0xdead2));
+ cq_verify_empty(cqv);
+
+ grpc_call_cancel(call1, NULL);
+ grpc_call_cancel(call2, NULL);
+
+ /* now everything else should finish */
+ cq_expect_completion(cqv, tag(0x102), 1);
+ cq_expect_completion(cqv, tag(0x202), 1);
+ cq_expect_completion(cqv, tag(0x302), 1);
+ cq_expect_completion(cqv, tag(0x402), 1);
+ cq_expect_completion(cqv, tag(0xdead1), 1);
+ cq_expect_completion(cqv, tag(0xdead2), 1);
+ cq_verify(cqv);
+
+ grpc_call_destroy(call1);
+ grpc_call_destroy(call2);
+ grpc_call_destroy(server_call1);
+ grpc_call_destroy(server_call2);
+ grpc_server_destroy(server1);
+ grpc_server_destroy(server2);
+ grpc_channel_destroy(chan);
+
+ grpc_metadata_array_destroy(&trailing_metadata_recv1);
+ grpc_metadata_array_destroy(&request_metadata1);
+ grpc_call_details_destroy(&request_details1);
+ gpr_free(details1);
+ grpc_metadata_array_destroy(&trailing_metadata_recv2);
+ grpc_metadata_array_destroy(&request_metadata2);
+ grpc_call_details_destroy(&request_details2);
+ gpr_free(details2);
+
+ cq_verifier_destroy(cqv);
+ grpc_completion_queue_destroy(cq);
+
+ grpc_shutdown();
+ gpr_mu_destroy(&g_mu);
+
+ return 0;
+}
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