|  | @@ -1,6 +1,6 @@
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				|  |  |  /*
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				|  |  |   *
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				|  |  | - * Copyright 2015, Google Inc.
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				|  |  | + * Copyright 2015-2016, Google Inc.
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				|  |  |   * All rights reserved.
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				|  |  |   *
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				|  |  |   * Redistribution and use in source and binary forms, with or without
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				|  | @@ -33,11 +33,15 @@
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				|  |  |  
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				|  |  |  #include "src/core/iomgr/tcp_server.h"
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				|  |  |  #include "src/core/iomgr/iomgr.h"
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				|  |  | +#include "src/core/iomgr/sockaddr_utils.h"
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				|  |  | +#include <grpc/grpc.h>
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				|  |  |  #include <grpc/support/log.h>
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				|  |  |  #include <grpc/support/sync.h>
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				|  |  |  #include <grpc/support/time.h>
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				|  |  | +#include "test/core/util/port.h"
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				|  |  |  #include "test/core/util/test_config.h"
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				|  |  |  
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				|  |  | +#include <errno.h>
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				|  |  |  #include <sys/socket.h>
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				|  |  |  #include <netinet/in.h>
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				|  |  |  #include <string.h>
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				|  | @@ -48,11 +52,69 @@
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				|  |  |  static grpc_pollset g_pollset;
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				|  |  |  static int g_nconnects = 0;
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				|  |  |  
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				|  |  | -static void on_connect(grpc_exec_ctx *exec_ctx, void *arg, grpc_endpoint *tcp) {
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				|  |  | +typedef struct on_connect_result {
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				|  |  | +  /* Owns a ref to server. */
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				|  |  | +  grpc_tcp_server *server;
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				|  |  | +  unsigned port_index;
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				|  |  | +  unsigned fd_index;
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				|  |  | +  int server_fd;
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				|  |  | +} on_connect_result;
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				|  |  | +
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				|  |  | +typedef struct server_weak_ref {
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				|  |  | +  grpc_tcp_server *server;
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				|  |  | +
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				|  |  | +  /* arg is this server_weak_ref. */
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				|  |  | +  grpc_closure server_shutdown;
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				|  |  | +} server_weak_ref;
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				|  |  | +
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				|  |  | +static on_connect_result g_result = {NULL, 0, 0, -1};
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				|  |  | +
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				|  |  | +static void on_connect_result_init(on_connect_result *result) {
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				|  |  | +  result->server = NULL;
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				|  |  | +  result->port_index = 0;
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				|  |  | +  result->fd_index = 0;
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				|  |  | +  result->server_fd = -1;
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				|  |  | +}
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				|  |  | +
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				|  |  | +static void on_connect_result_set(on_connect_result *result,
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				|  |  | +                                  const grpc_tcp_server_acceptor *acceptor) {
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				|  |  | +  result->server = grpc_tcp_server_ref(acceptor->from_server);
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				|  |  | +  result->port_index = acceptor->port_index;
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				|  |  | +  result->fd_index = acceptor->fd_index;
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				|  |  | +  result->server_fd = grpc_tcp_server_port_fd(
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				|  |  | +      result->server, acceptor->port_index, acceptor->fd_index);
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				|  |  | +}
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				|  |  | +
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				|  |  | +static void server_weak_ref_shutdown(grpc_exec_ctx *exec_ctx, void *arg,
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				|  |  | +                                     int success) {
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				|  |  | +  server_weak_ref *weak_ref = arg;
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				|  |  | +  weak_ref->server = NULL;
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				|  |  | +}
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				|  |  | +
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				|  |  | +static void server_weak_ref_init(server_weak_ref *weak_ref) {
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				|  |  | +  weak_ref->server = NULL;
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				|  |  | +  grpc_closure_init(&weak_ref->server_shutdown, server_weak_ref_shutdown,
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				|  |  | +                    weak_ref);
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				|  |  | +}
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				|  |  | +
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				|  |  | +/* Make weak_ref->server_shutdown a shutdown_starting cb on server.
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				|  |  | +   grpc_tcp_server promises that the server object will live until
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				|  |  | +   weak_ref->server_shutdown has returned. A strong ref on grpc_tcp_server
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				|  |  | +   should be held until server_weak_ref_set() returns to avoid a race where the
 | 
	
		
			
				|  |  | +   server is deleted before the shutdown_starting cb is added. */
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				|  |  | +static void server_weak_ref_set(server_weak_ref *weak_ref,
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				|  |  | +                                grpc_tcp_server *server) {
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				|  |  | +  grpc_tcp_server_shutdown_starting_add(server, &weak_ref->server_shutdown);
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				|  |  | +  weak_ref->server = server;
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				|  |  | +}
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				|  |  | +
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				|  |  | +static void on_connect(grpc_exec_ctx *exec_ctx, void *arg, grpc_endpoint *tcp,
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				|  |  | +                       grpc_tcp_server_acceptor *acceptor) {
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				|  |  |    grpc_endpoint_shutdown(exec_ctx, tcp);
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				|  |  |    grpc_endpoint_destroy(exec_ctx, tcp);
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				|  |  |  
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				|  |  |    gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
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				|  |  | +  on_connect_result_set(&g_result, acceptor);
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				|  |  |    g_nconnects++;
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				|  |  |    grpc_pollset_kick(&g_pollset, NULL);
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				|  |  |    gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
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				|  | @@ -60,107 +122,184 @@ static void on_connect(grpc_exec_ctx *exec_ctx, void *arg, grpc_endpoint *tcp) {
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				|  |  |  
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				|  |  |  static void test_no_op(void) {
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				|  |  |    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
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				|  |  | -  grpc_tcp_server *s = grpc_tcp_server_create();
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				|  |  | -  grpc_tcp_server_destroy(&exec_ctx, s, NULL);
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				|  |  | +  grpc_tcp_server *s = grpc_tcp_server_create(NULL);
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				|  |  | +  grpc_tcp_server_unref(&exec_ctx, s);
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				|  |  |    grpc_exec_ctx_finish(&exec_ctx);
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				|  |  |  }
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				|  |  |  
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				|  |  |  static void test_no_op_with_start(void) {
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				|  |  |    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
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				|  |  | -  grpc_tcp_server *s = grpc_tcp_server_create();
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				|  |  | +  grpc_tcp_server *s = grpc_tcp_server_create(NULL);
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				|  |  |    LOG_TEST("test_no_op_with_start");
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				|  |  |    grpc_tcp_server_start(&exec_ctx, s, NULL, 0, on_connect, NULL);
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				|  |  | -  grpc_tcp_server_destroy(&exec_ctx, s, NULL);
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				|  |  | +  grpc_tcp_server_unref(&exec_ctx, s);
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				|  |  |    grpc_exec_ctx_finish(&exec_ctx);
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				|  |  |  }
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				|  |  |  
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				|  |  |  static void test_no_op_with_port(void) {
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				|  |  |    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
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				|  |  |    struct sockaddr_in addr;
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				|  |  | -  grpc_tcp_server *s = grpc_tcp_server_create();
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				|  |  | +  grpc_tcp_server *s = grpc_tcp_server_create(NULL);
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				|  |  |    LOG_TEST("test_no_op_with_port");
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				|  |  |  
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				|  |  |    memset(&addr, 0, sizeof(addr));
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				|  |  |    addr.sin_family = AF_INET;
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				|  |  |    GPR_ASSERT(
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				|  |  | -      grpc_tcp_server_add_port(s, (struct sockaddr *)&addr, sizeof(addr)));
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				|  |  | +      grpc_tcp_server_add_port(s, (struct sockaddr *)&addr, sizeof(addr)) > 0);
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				|  |  |  
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				|  |  | -  grpc_tcp_server_destroy(&exec_ctx, s, NULL);
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				|  |  | +  grpc_tcp_server_unref(&exec_ctx, s);
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				|  |  |    grpc_exec_ctx_finish(&exec_ctx);
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				|  |  |  }
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				|  |  |  
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				|  |  |  static void test_no_op_with_port_and_start(void) {
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				|  |  |    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
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				|  |  |    struct sockaddr_in addr;
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				|  |  | -  grpc_tcp_server *s = grpc_tcp_server_create();
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				|  |  | +  grpc_tcp_server *s = grpc_tcp_server_create(NULL);
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				|  |  |    LOG_TEST("test_no_op_with_port_and_start");
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				|  |  |  
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				|  |  |    memset(&addr, 0, sizeof(addr));
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				|  |  |    addr.sin_family = AF_INET;
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				|  |  |    GPR_ASSERT(
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				|  |  | -      grpc_tcp_server_add_port(s, (struct sockaddr *)&addr, sizeof(addr)));
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				|  |  | +      grpc_tcp_server_add_port(s, (struct sockaddr *)&addr, sizeof(addr)) > 0);
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				|  |  |  
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				|  |  |    grpc_tcp_server_start(&exec_ctx, s, NULL, 0, on_connect, NULL);
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				|  |  |  
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				|  |  | -  grpc_tcp_server_destroy(&exec_ctx, s, NULL);
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				|  |  | +  grpc_tcp_server_unref(&exec_ctx, s);
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				|  |  |    grpc_exec_ctx_finish(&exec_ctx);
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				|  |  |  }
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				|  |  |  
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				|  |  | -static void test_connect(int n) {
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				|  |  | +static void tcp_connect(grpc_exec_ctx *exec_ctx, const struct sockaddr *remote,
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				|  |  | +                        socklen_t remote_len, on_connect_result *result) {
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				|  |  | +  gpr_timespec deadline = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(10);
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				|  |  | +  int clifd = socket(remote->sa_family, SOCK_STREAM, 0);
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				|  |  | +  int nconnects_before;
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				|  |  | +
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				|  |  | +  gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
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				|  |  | +  nconnects_before = g_nconnects;
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				|  |  | +  on_connect_result_init(&g_result);
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				|  |  | +  GPR_ASSERT(clifd >= 0);
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				|  |  | +  gpr_log(GPR_DEBUG, "start connect");
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				|  |  | +  GPR_ASSERT(connect(clifd, remote, remote_len) == 0);
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				|  |  | +  gpr_log(GPR_DEBUG, "wait");
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				|  |  | +  while (g_nconnects == nconnects_before &&
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				|  |  | +         gpr_time_cmp(deadline, gpr_now(deadline.clock_type)) > 0) {
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				|  |  | +    grpc_pollset_worker worker;
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				|  |  | +    grpc_pollset_work(exec_ctx, &g_pollset, &worker,
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				|  |  | +                      gpr_now(GPR_CLOCK_MONOTONIC), deadline);
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				|  |  | +    gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
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				|  |  | +    grpc_exec_ctx_finish(exec_ctx);
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				|  |  | +    gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
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				|  |  | +  }
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				|  |  | +  gpr_log(GPR_DEBUG, "wait done");
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				|  |  | +  GPR_ASSERT(g_nconnects == nconnects_before + 1);
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				|  |  | +  close(clifd);
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				|  |  | +  *result = g_result;
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				|  |  | +
 | 
	
		
			
				|  |  | +  gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
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				|  |  | +}
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				|  |  | +
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				|  |  | +/* Tests a tcp server with multiple ports. TODO(daniel-j-born): Multiple fds for
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				|  |  | +   the same port should be tested. */
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				|  |  | +static void test_connect(unsigned n) {
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				|  |  |    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
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				|  |  |    struct sockaddr_storage addr;
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				|  |  | +  struct sockaddr_storage addr1;
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				|  |  |    socklen_t addr_len = sizeof(addr);
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				|  |  | -  int svrfd, clifd;
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				|  |  | -  grpc_tcp_server *s = grpc_tcp_server_create();
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				|  |  | -  int nconnects_before;
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				|  |  | -  gpr_timespec deadline;
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				|  |  | +  unsigned svr_fd_count;
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				|  |  | +  int svr_port;
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				|  |  | +  unsigned svr1_fd_count;
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				|  |  | +  int svr1_port;
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				|  |  | +  grpc_tcp_server *s = grpc_tcp_server_create(NULL);
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				|  |  |    grpc_pollset *pollsets[1];
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				|  |  | -  int i;
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				|  |  | +  unsigned i;
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				|  |  | +  server_weak_ref weak_ref;
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				|  |  | +  server_weak_ref_init(&weak_ref);
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				|  |  |    LOG_TEST("test_connect");
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				|  |  |    gpr_log(GPR_INFO, "clients=%d", n);
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				|  |  | -
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				|  |  |    memset(&addr, 0, sizeof(addr));
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				|  |  | -  addr.ss_family = AF_INET;
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				|  |  | -  GPR_ASSERT(grpc_tcp_server_add_port(s, (struct sockaddr *)&addr, addr_len));
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				|  |  | +  memset(&addr1, 0, sizeof(addr1));
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				|  |  | +  addr.ss_family = addr1.ss_family = AF_INET;
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				|  |  | +  svr_port = grpc_tcp_server_add_port(s, (struct sockaddr *)&addr, addr_len);
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				|  |  | +  GPR_ASSERT(svr_port > 0);
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				|  |  | +  /* Cannot use wildcard (port==0), because add_port() will try to reuse the
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				|  |  | +     same port as a previous add_port(). */
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				|  |  | +  svr1_port = grpc_pick_unused_port_or_die();
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				|  |  | +  grpc_sockaddr_set_port((struct sockaddr *)&addr1, svr1_port);
 | 
	
		
			
				|  |  | +  GPR_ASSERT(grpc_tcp_server_add_port(s, (struct sockaddr *)&addr1, addr_len) ==
 | 
	
		
			
				|  |  | +             svr1_port);
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				|  |  | +
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				|  |  | +  /* Bad port_index. */
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				|  |  | +  GPR_ASSERT(grpc_tcp_server_port_fd_count(s, 2) == 0);
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				|  |  | +  GPR_ASSERT(grpc_tcp_server_port_fd(s, 2, 0) < 0);
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				|  |  | +
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				|  |  | +  /* Bad fd_index. */
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				|  |  | +  GPR_ASSERT(grpc_tcp_server_port_fd(s, 0, 100) < 0);
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				|  |  | +  GPR_ASSERT(grpc_tcp_server_port_fd(s, 1, 100) < 0);
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				|  |  | +
 | 
	
		
			
				|  |  | +  /* Got at least one fd per port. */
 | 
	
		
			
				|  |  | +  svr_fd_count = grpc_tcp_server_port_fd_count(s, 0);
 | 
	
		
			
				|  |  | +  GPR_ASSERT(svr_fd_count >= 1);
 | 
	
		
			
				|  |  | +  svr1_fd_count = grpc_tcp_server_port_fd_count(s, 1);
 | 
	
		
			
				|  |  | +  GPR_ASSERT(svr1_fd_count >= 1);
 | 
	
		
			
				|  |  |  
 | 
	
		
			
				|  |  | -  svrfd = grpc_tcp_server_get_fd(s, 0);
 | 
	
		
			
				|  |  | -  GPR_ASSERT(svrfd >= 0);
 | 
	
		
			
				|  |  | -  GPR_ASSERT(getsockname(svrfd, (struct sockaddr *)&addr, &addr_len) == 0);
 | 
	
		
			
				|  |  | -  GPR_ASSERT(addr_len <= sizeof(addr));
 | 
	
		
			
				|  |  | +  for (i = 0; i < svr_fd_count; ++i) {
 | 
	
		
			
				|  |  | +    int fd = grpc_tcp_server_port_fd(s, 0, i);
 | 
	
		
			
				|  |  | +    GPR_ASSERT(fd >= 0);
 | 
	
		
			
				|  |  | +    if (i == 0) {
 | 
	
		
			
				|  |  | +      GPR_ASSERT(getsockname(fd, (struct sockaddr *)&addr, &addr_len) == 0);
 | 
	
		
			
				|  |  | +      GPR_ASSERT(addr_len <= sizeof(addr));
 | 
	
		
			
				|  |  | +    }
 | 
	
		
			
				|  |  | +  }
 | 
	
		
			
				|  |  | +  for (i = 0; i < svr1_fd_count; ++i) {
 | 
	
		
			
				|  |  | +    int fd = grpc_tcp_server_port_fd(s, 1, i);
 | 
	
		
			
				|  |  | +    GPR_ASSERT(fd >= 0);
 | 
	
		
			
				|  |  | +    if (i == 0) {
 | 
	
		
			
				|  |  | +      GPR_ASSERT(getsockname(fd, (struct sockaddr *)&addr1, &addr_len) == 0);
 | 
	
		
			
				|  |  | +      GPR_ASSERT(addr_len <= sizeof(addr1));
 | 
	
		
			
				|  |  | +    }
 | 
	
		
			
				|  |  | +  }
 | 
	
		
			
				|  |  |  
 | 
	
		
			
				|  |  |    pollsets[0] = &g_pollset;
 | 
	
		
			
				|  |  |    grpc_tcp_server_start(&exec_ctx, s, pollsets, 1, on_connect, NULL);
 | 
	
		
			
				|  |  |  
 | 
	
		
			
				|  |  | -  gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
 | 
	
		
			
				|  |  | -
 | 
	
		
			
				|  |  |    for (i = 0; i < n; i++) {
 | 
	
		
			
				|  |  | -    deadline = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(10);
 | 
	
		
			
				|  |  | -
 | 
	
		
			
				|  |  | -    nconnects_before = g_nconnects;
 | 
	
		
			
				|  |  | -    clifd = socket(addr.ss_family, SOCK_STREAM, 0);
 | 
	
		
			
				|  |  | -    GPR_ASSERT(clifd >= 0);
 | 
	
		
			
				|  |  | -    gpr_log(GPR_DEBUG, "start connect");
 | 
	
		
			
				|  |  | -    GPR_ASSERT(connect(clifd, (struct sockaddr *)&addr, addr_len) == 0);
 | 
	
		
			
				|  |  | -
 | 
	
		
			
				|  |  | -    gpr_log(GPR_DEBUG, "wait");
 | 
	
		
			
				|  |  | -    while (g_nconnects == nconnects_before &&
 | 
	
		
			
				|  |  | -           gpr_time_cmp(deadline, gpr_now(deadline.clock_type)) > 0) {
 | 
	
		
			
				|  |  | -      grpc_pollset_worker worker;
 | 
	
		
			
				|  |  | -      grpc_pollset_work(&exec_ctx, &g_pollset, &worker,
 | 
	
		
			
				|  |  | -                        gpr_now(GPR_CLOCK_MONOTONIC), deadline);
 | 
	
		
			
				|  |  | -      gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
 | 
	
		
			
				|  |  | -      grpc_exec_ctx_finish(&exec_ctx);
 | 
	
		
			
				|  |  | -      gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
 | 
	
		
			
				|  |  | +    on_connect_result result;
 | 
	
		
			
				|  |  | +    int svr_fd;
 | 
	
		
			
				|  |  | +    on_connect_result_init(&result);
 | 
	
		
			
				|  |  | +    tcp_connect(&exec_ctx, (struct sockaddr *)&addr, addr_len, &result);
 | 
	
		
			
				|  |  | +    GPR_ASSERT(result.server_fd >= 0);
 | 
	
		
			
				|  |  | +    svr_fd = result.server_fd;
 | 
	
		
			
				|  |  | +    GPR_ASSERT(grpc_tcp_server_port_fd(s, result.port_index, result.fd_index) ==
 | 
	
		
			
				|  |  | +               result.server_fd);
 | 
	
		
			
				|  |  | +    GPR_ASSERT(result.port_index == 0);
 | 
	
		
			
				|  |  | +    GPR_ASSERT(result.fd_index < svr_fd_count);
 | 
	
		
			
				|  |  | +    GPR_ASSERT(result.server == s);
 | 
	
		
			
				|  |  | +    if (weak_ref.server == NULL) {
 | 
	
		
			
				|  |  | +      server_weak_ref_set(&weak_ref, result.server);
 | 
	
		
			
				|  |  |      }
 | 
	
		
			
				|  |  | -    gpr_log(GPR_DEBUG, "wait done");
 | 
	
		
			
				|  |  | +    grpc_tcp_server_unref(&exec_ctx, result.server);
 | 
	
		
			
				|  |  |  
 | 
	
		
			
				|  |  | -    GPR_ASSERT(g_nconnects == nconnects_before + 1);
 | 
	
		
			
				|  |  | -    close(clifd);
 | 
	
		
			
				|  |  | +    on_connect_result_init(&result);
 | 
	
		
			
				|  |  | +    tcp_connect(&exec_ctx, (struct sockaddr *)&addr1, addr_len, &result);
 | 
	
		
			
				|  |  | +    GPR_ASSERT(result.server_fd >= 0);
 | 
	
		
			
				|  |  | +    GPR_ASSERT(result.server_fd != svr_fd);
 | 
	
		
			
				|  |  | +    GPR_ASSERT(grpc_tcp_server_port_fd(s, result.port_index, result.fd_index) ==
 | 
	
		
			
				|  |  | +               result.server_fd);
 | 
	
		
			
				|  |  | +    GPR_ASSERT(result.port_index == 1);
 | 
	
		
			
				|  |  | +    GPR_ASSERT(result.fd_index < svr_fd_count);
 | 
	
		
			
				|  |  | +    GPR_ASSERT(result.server == s);
 | 
	
		
			
				|  |  | +    grpc_tcp_server_unref(&exec_ctx, result.server);
 | 
	
		
			
				|  |  |    }
 | 
	
		
			
				|  |  |  
 | 
	
		
			
				|  |  | -  gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
 | 
	
		
			
				|  |  | +  /* Weak ref to server valid until final unref. */
 | 
	
		
			
				|  |  | +  GPR_ASSERT(weak_ref.server != NULL);
 | 
	
		
			
				|  |  | +  GPR_ASSERT(grpc_tcp_server_port_fd(s, 0, 0) >= 0);
 | 
	
		
			
				|  |  | +
 | 
	
		
			
				|  |  | +  grpc_tcp_server_unref(&exec_ctx, s);
 | 
	
		
			
				|  |  | +
 | 
	
		
			
				|  |  | +  /* Weak ref lost. */
 | 
	
		
			
				|  |  | +  GPR_ASSERT(weak_ref.server == NULL);
 | 
	
		
			
				|  |  |  
 | 
	
		
			
				|  |  | -  grpc_tcp_server_destroy(&exec_ctx, s, NULL);
 | 
	
		
			
				|  |  |    grpc_exec_ctx_finish(&exec_ctx);
 | 
	
		
			
				|  |  |  }
 | 
	
		
			
				|  |  |  
 | 
	
	
		
			
				|  | @@ -172,7 +311,7 @@ int main(int argc, char **argv) {
 | 
	
		
			
				|  |  |    grpc_closure destroyed;
 | 
	
		
			
				|  |  |    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
 | 
	
		
			
				|  |  |    grpc_test_init(argc, argv);
 | 
	
		
			
				|  |  | -  grpc_iomgr_init();
 | 
	
		
			
				|  |  | +  grpc_init();
 | 
	
		
			
				|  |  |    grpc_pollset_init(&g_pollset);
 | 
	
		
			
				|  |  |  
 | 
	
		
			
				|  |  |    test_no_op();
 | 
	
	
		
			
				|  | @@ -185,6 +324,6 @@ int main(int argc, char **argv) {
 | 
	
		
			
				|  |  |    grpc_closure_init(&destroyed, destroy_pollset, &g_pollset);
 | 
	
		
			
				|  |  |    grpc_pollset_shutdown(&exec_ctx, &g_pollset, &destroyed);
 | 
	
		
			
				|  |  |    grpc_exec_ctx_finish(&exec_ctx);
 | 
	
		
			
				|  |  | -  grpc_iomgr_shutdown();
 | 
	
		
			
				|  |  | +  grpc_shutdown();
 | 
	
		
			
				|  |  |    return 0;
 | 
	
		
			
				|  |  |  }
 |