Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 1 | /* |
| 2 | * |
Craig Tiller | 0605995 | 2015-02-18 08:34:56 -0800 | [diff] [blame] | 3 | * Copyright 2015, Google Inc. |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 4 | * All rights reserved. |
| 5 | * |
| 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions are |
| 8 | * met: |
| 9 | * |
| 10 | * * Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * * Redistributions in binary form must reproduce the above |
| 13 | * copyright notice, this list of conditions and the following disclaimer |
| 14 | * in the documentation and/or other materials provided with the |
| 15 | * distribution. |
| 16 | * * Neither the name of Google Inc. nor the names of its |
| 17 | * contributors may be used to endorse or promote products derived from |
| 18 | * this software without specific prior written permission. |
| 19 | * |
| 20 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 21 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 22 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 23 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 24 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 25 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 26 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 27 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 28 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 29 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 30 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 31 | * |
| 32 | */ |
| 33 | |
David Klempner | 78b7992 | 2015-02-04 10:18:59 -0800 | [diff] [blame] | 34 | /* FIXME: "posix" files shouldn't be depending on _GNU_SOURCE */ |
| 35 | #ifndef _GNU_SOURCE |
| 36 | #define _GNU_SOURCE |
| 37 | #endif |
| 38 | |
Craig Tiller | 0c0b60c | 2015-01-21 15:49:28 -0800 | [diff] [blame] | 39 | #include <grpc/support/port_platform.h> |
| 40 | |
Craig Tiller | a172ad7 | 2015-01-21 15:51:47 -0800 | [diff] [blame] | 41 | #ifdef GPR_POSIX_SOCKET |
Craig Tiller | 0c0b60c | 2015-01-21 15:49:28 -0800 | [diff] [blame] | 42 | |
ctiller | 18b49ab | 2014-12-09 14:39:16 -0800 | [diff] [blame] | 43 | #include "src/core/iomgr/tcp_server.h" |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 44 | |
Craig Tiller | aa31da4 | 2015-02-17 16:33:35 -0800 | [diff] [blame] | 45 | #include <errno.h> |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 46 | #include <fcntl.h> |
Craig Tiller | aa31da4 | 2015-02-17 16:33:35 -0800 | [diff] [blame] | 47 | #include <limits.h> |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 48 | #include <netinet/in.h> |
| 49 | #include <netinet/tcp.h> |
| 50 | #include <stdio.h> |
Craig Tiller | aa31da4 | 2015-02-17 16:33:35 -0800 | [diff] [blame] | 51 | #include <string.h> |
| 52 | #include <sys/socket.h> |
| 53 | #include <sys/stat.h> |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 54 | #include <sys/types.h> |
Craig Tiller | ae7fe92 | 2015-02-13 23:16:32 -0800 | [diff] [blame] | 55 | #include <sys/un.h> |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 56 | #include <unistd.h> |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 57 | |
ctiller | 58393c2 | 2015-01-07 14:03:30 -0800 | [diff] [blame] | 58 | #include "src/core/iomgr/pollset_posix.h" |
Craig Tiller | ae7fe92 | 2015-02-13 23:16:32 -0800 | [diff] [blame] | 59 | #include "src/core/iomgr/resolve_address.h" |
ctiller | 18b49ab | 2014-12-09 14:39:16 -0800 | [diff] [blame] | 60 | #include "src/core/iomgr/sockaddr_utils.h" |
| 61 | #include "src/core/iomgr/socket_utils_posix.h" |
| 62 | #include "src/core/iomgr/tcp_posix.h" |
Craig Tiller | fa275a9 | 2015-06-01 13:55:54 -0700 | [diff] [blame] | 63 | #include "src/core/support/string.h" |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 64 | #include <grpc/support/alloc.h> |
| 65 | #include <grpc/support/log.h> |
Masood Malekghassemi | 701af60 | 2015-06-03 15:01:17 -0700 | [diff] [blame] | 66 | #include <grpc/support/string_util.h> |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 67 | #include <grpc/support/sync.h> |
| 68 | #include <grpc/support/time.h> |
| 69 | |
| 70 | #define INIT_PORT_CAP 2 |
| 71 | #define MIN_SAFE_ACCEPT_QUEUE_SIZE 100 |
| 72 | |
| 73 | static gpr_once s_init_max_accept_queue_size; |
| 74 | static int s_max_accept_queue_size; |
| 75 | |
| 76 | /* one listening port */ |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 77 | struct grpc_tcp_listener { |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 78 | int fd; |
ctiller | 18b49ab | 2014-12-09 14:39:16 -0800 | [diff] [blame] | 79 | grpc_fd *emfd; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 80 | grpc_tcp_server *server; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 81 | union { |
Craig Tiller | 772c97b | 2015-02-17 08:07:34 -0800 | [diff] [blame] | 82 | gpr_uint8 untyped[GRPC_MAX_SOCKADDR_SIZE]; |
| 83 | struct sockaddr sockaddr; |
| 84 | struct sockaddr_un un; |
| 85 | } addr; |
Craig Tiller | f96dfc3 | 2015-09-10 14:43:18 -0700 | [diff] [blame] | 86 | size_t addr_len; |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 87 | int port; |
Craig Tiller | 3382511 | 2015-09-18 07:44:19 -0700 | [diff] [blame] | 88 | grpc_closure read_closure; |
| 89 | grpc_closure destroyed_closure; |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 90 | gpr_refcount refs; |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 91 | struct grpc_tcp_listener *next; |
| 92 | struct grpc_tcp_listener *dual_stack_second_port; |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 93 | int is_dual_stack_second_port; |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 94 | }; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 95 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 96 | static void unlink_if_unix_domain_socket(const struct sockaddr_un *un) { |
Craig Tiller | aa31da4 | 2015-02-17 16:33:35 -0800 | [diff] [blame] | 97 | struct stat st; |
| 98 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 99 | if (stat(un->sun_path, &st) == 0 && (st.st_mode & S_IFMT) == S_IFSOCK) { |
| 100 | unlink(un->sun_path); |
| 101 | } |
Craig Tiller | aa31da4 | 2015-02-17 16:33:35 -0800 | [diff] [blame] | 102 | } |
| 103 | |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 104 | /* the overall server */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 105 | struct grpc_tcp_server { |
Robbie Shade | 3cd2d18 | 2015-08-28 14:30:35 -0400 | [diff] [blame] | 106 | /* Called whenever accept() succeeds on a server port. */ |
| 107 | grpc_tcp_server_cb on_accept_cb; |
| 108 | void *on_accept_cb_arg; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 109 | |
| 110 | gpr_mu mu; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 111 | |
| 112 | /* active port count: how many ports are actually still listening */ |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 113 | size_t active_ports; |
| 114 | /* destroyed port count: how many ports are completely destroyed */ |
| 115 | size_t destroyed_ports; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 116 | |
Craig Tiller | 6174b9a | 2015-06-18 08:13:05 -0700 | [diff] [blame] | 117 | /* is this server shutting down? (boolean) */ |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 118 | int shutdown; |
| 119 | |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 120 | /* linked list of server ports */ |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 121 | grpc_tcp_listener *head; |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 122 | unsigned nports; |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 123 | |
| 124 | /* shutdown callback */ |
Craig Tiller | d1bec03 | 2015-09-18 17:29:00 -0700 | [diff] [blame] | 125 | grpc_closure *shutdown_complete; |
Craig Tiller | 0189ac0 | 2015-05-11 14:59:19 -0700 | [diff] [blame] | 126 | |
Craig Tiller | 6174b9a | 2015-06-18 08:13:05 -0700 | [diff] [blame] | 127 | /* all pollsets interested in new connections */ |
Craig Tiller | 0189ac0 | 2015-05-11 14:59:19 -0700 | [diff] [blame] | 128 | grpc_pollset **pollsets; |
Craig Tiller | 6174b9a | 2015-06-18 08:13:05 -0700 | [diff] [blame] | 129 | /* number of pollsets in the pollsets array */ |
Craig Tiller | 0189ac0 | 2015-05-11 14:59:19 -0700 | [diff] [blame] | 130 | size_t pollset_count; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 131 | }; |
| 132 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 133 | grpc_tcp_server *grpc_tcp_server_create(void) { |
| 134 | grpc_tcp_server *s = gpr_malloc(sizeof(grpc_tcp_server)); |
| 135 | gpr_mu_init(&s->mu); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 136 | s->active_ports = 0; |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 137 | s->destroyed_ports = 0; |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 138 | s->shutdown = 0; |
Robbie Shade | 3cd2d18 | 2015-08-28 14:30:35 -0400 | [diff] [blame] | 139 | s->on_accept_cb = NULL; |
| 140 | s->on_accept_cb_arg = NULL; |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 141 | s->head = NULL; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 142 | s->nports = 0; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 143 | return s; |
| 144 | } |
| 145 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 146 | static void finish_shutdown(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s) { |
| 147 | grpc_exec_ctx_enqueue(exec_ctx, s->shutdown_complete, 1); |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 148 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 149 | gpr_mu_destroy(&s->mu); |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 150 | |
Nicolas "Pixel" Noble | c6a7c6e | 2015-11-19 21:55:44 +0100 | [diff] [blame^] | 151 | while (s->head) { |
| 152 | grpc_tcp_listener *sp = s->head; |
| 153 | s->head = sp->next; |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 154 | grpc_tcp_listener_unref(sp); |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 155 | } |
| 156 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 157 | gpr_free(s); |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 158 | } |
| 159 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 160 | static void destroyed_port(grpc_exec_ctx *exec_ctx, void *server, int success) { |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 161 | grpc_tcp_server *s = server; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 162 | gpr_mu_lock(&s->mu); |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 163 | s->destroyed_ports++; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 164 | if (s->destroyed_ports == s->nports) { |
| 165 | gpr_mu_unlock(&s->mu); |
| 166 | finish_shutdown(exec_ctx, s); |
| 167 | } else { |
| 168 | GPR_ASSERT(s->destroyed_ports < s->nports); |
| 169 | gpr_mu_unlock(&s->mu); |
| 170 | } |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 171 | } |
| 172 | |
Craig Tiller | 6174b9a | 2015-06-18 08:13:05 -0700 | [diff] [blame] | 173 | /* called when all listening endpoints have been shutdown, so no further |
| 174 | events will be received on them - at this point it's safe to destroy |
| 175 | things */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 176 | static void deactivated_all_ports(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s) { |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 177 | /* delete ALL the things */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 178 | gpr_mu_lock(&s->mu); |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 179 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 180 | if (!s->shutdown) { |
| 181 | gpr_mu_unlock(&s->mu); |
| 182 | return; |
| 183 | } |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame] | 184 | |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 185 | if (s->head) { |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 186 | grpc_tcp_listener *sp; |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 187 | for (sp = s->head; sp; sp = sp->next) { |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 188 | if (sp->addr.sockaddr.sa_family == AF_UNIX) { |
| 189 | unlink_if_unix_domain_socket(&sp->addr.un); |
| 190 | } |
| 191 | sp->destroyed_closure.cb = destroyed_port; |
| 192 | sp->destroyed_closure.cb_arg = s; |
| 193 | grpc_fd_orphan(exec_ctx, sp->emfd, &sp->destroyed_closure, |
| 194 | "tcp_listener_shutdown"); |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame] | 195 | } |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 196 | gpr_mu_unlock(&s->mu); |
| 197 | } else { |
| 198 | gpr_mu_unlock(&s->mu); |
| 199 | finish_shutdown(exec_ctx, s); |
| 200 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 201 | } |
| 202 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 203 | void grpc_tcp_server_destroy(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s, |
| 204 | grpc_closure *closure) { |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 205 | gpr_mu_lock(&s->mu); |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 206 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 207 | GPR_ASSERT(!s->shutdown); |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 208 | s->shutdown = 1; |
| 209 | |
Craig Tiller | d1bec03 | 2015-09-18 17:29:00 -0700 | [diff] [blame] | 210 | s->shutdown_complete = closure; |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 211 | |
| 212 | /* shutdown all fd's */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 213 | if (s->active_ports) { |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 214 | grpc_tcp_listener *sp; |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 215 | for (sp = s->head; sp; sp = sp->next) { |
| 216 | grpc_fd_shutdown(exec_ctx, sp->emfd); |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 217 | } |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 218 | gpr_mu_unlock(&s->mu); |
| 219 | } else { |
| 220 | gpr_mu_unlock(&s->mu); |
| 221 | deactivated_all_ports(exec_ctx, s); |
| 222 | } |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 223 | } |
| 224 | |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 225 | /* get max listen queue size on linux */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 226 | static void init_max_accept_queue_size(void) { |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 227 | int n = SOMAXCONN; |
| 228 | char buf[64]; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 229 | FILE *fp = fopen("/proc/sys/net/core/somaxconn", "r"); |
| 230 | if (fp == NULL) { |
| 231 | /* 2.4 kernel. */ |
| 232 | s_max_accept_queue_size = SOMAXCONN; |
| 233 | return; |
| 234 | } |
| 235 | if (fgets(buf, sizeof buf, fp)) { |
| 236 | char *end; |
| 237 | long i = strtol(buf, &end, 10); |
| 238 | if (i > 0 && i <= INT_MAX && end && *end == 0) { |
| 239 | n = (int)i; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 240 | } |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 241 | } |
| 242 | fclose(fp); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 243 | s_max_accept_queue_size = n; |
| 244 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 245 | if (s_max_accept_queue_size < MIN_SAFE_ACCEPT_QUEUE_SIZE) { |
| 246 | gpr_log(GPR_INFO, |
| 247 | "Suspiciously small accept queue (%d) will probably lead to " |
| 248 | "connection drops", |
| 249 | s_max_accept_queue_size); |
| 250 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 251 | } |
| 252 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 253 | static int get_max_accept_queue_size(void) { |
| 254 | gpr_once_init(&s_init_max_accept_queue_size, init_max_accept_queue_size); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 255 | return s_max_accept_queue_size; |
| 256 | } |
| 257 | |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 258 | /* Prepare a recently-created socket for listening. */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 259 | static int prepare_socket(int fd, const struct sockaddr *addr, |
| 260 | size_t addr_len) { |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 261 | struct sockaddr_storage sockname_temp; |
| 262 | socklen_t sockname_len; |
| 263 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 264 | if (fd < 0) { |
| 265 | goto error; |
| 266 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 267 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 268 | if (!grpc_set_socket_nonblocking(fd, 1) || !grpc_set_socket_cloexec(fd, 1) || |
| 269 | (addr->sa_family != AF_UNIX && (!grpc_set_socket_low_latency(fd, 1) || |
| 270 | !grpc_set_socket_reuse_addr(fd, 1))) || |
| 271 | !grpc_set_socket_no_sigpipe_if_possible(fd)) { |
| 272 | gpr_log(GPR_ERROR, "Unable to configure socket %d: %s", fd, |
| 273 | strerror(errno)); |
| 274 | goto error; |
| 275 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 276 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 277 | GPR_ASSERT(addr_len < ~(socklen_t)0); |
| 278 | if (bind(fd, addr, (socklen_t)addr_len) < 0) { |
| 279 | char *addr_str; |
| 280 | grpc_sockaddr_to_string(&addr_str, addr, 0); |
| 281 | gpr_log(GPR_ERROR, "bind addr=%s: %s", addr_str, strerror(errno)); |
| 282 | gpr_free(addr_str); |
| 283 | goto error; |
| 284 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 285 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 286 | if (listen(fd, get_max_accept_queue_size()) < 0) { |
| 287 | gpr_log(GPR_ERROR, "listen: %s", strerror(errno)); |
| 288 | goto error; |
| 289 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 290 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 291 | sockname_len = sizeof(sockname_temp); |
| 292 | if (getsockname(fd, (struct sockaddr *)&sockname_temp, &sockname_len) < 0) { |
| 293 | goto error; |
| 294 | } |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 295 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 296 | return grpc_sockaddr_get_port((struct sockaddr *)&sockname_temp); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 297 | |
| 298 | error: |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 299 | if (fd >= 0) { |
| 300 | close(fd); |
| 301 | } |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 302 | return -1; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 303 | } |
| 304 | |
| 305 | /* event manager callback when reads are ready */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 306 | static void on_read(grpc_exec_ctx *exec_ctx, void *arg, int success) { |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 307 | grpc_tcp_listener *sp = arg; |
Craig Tiller | 0189ac0 | 2015-05-11 14:59:19 -0700 | [diff] [blame] | 308 | grpc_fd *fdobj; |
| 309 | size_t i; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 310 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 311 | if (!success) { |
| 312 | goto error; |
| 313 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 314 | |
| 315 | /* loop until accept4 returns EAGAIN, and then re-arm notification */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 316 | for (;;) { |
| 317 | struct sockaddr_storage addr; |
| 318 | socklen_t addrlen = sizeof(addr); |
| 319 | char *addr_str; |
| 320 | char *name; |
| 321 | /* Note: If we ever decide to return this address to the user, remember to |
| 322 | strip off the ::ffff:0.0.0.0/96 prefix first. */ |
| 323 | int fd = grpc_accept4(sp->fd, (struct sockaddr *)&addr, &addrlen, 1, 1); |
| 324 | if (fd < 0) { |
| 325 | switch (errno) { |
| 326 | case EINTR: |
| 327 | continue; |
| 328 | case EAGAIN: |
| 329 | grpc_fd_notify_on_read(exec_ctx, sp->emfd, &sp->read_closure); |
| 330 | return; |
| 331 | default: |
| 332 | gpr_log(GPR_ERROR, "Failed accept4: %s", strerror(errno)); |
| 333 | goto error; |
| 334 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 335 | } |
| 336 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 337 | grpc_set_socket_no_sigpipe_if_possible(fd); |
| 338 | |
| 339 | addr_str = grpc_sockaddr_to_uri((struct sockaddr *)&addr); |
| 340 | gpr_asprintf(&name, "tcp-server-connection:%s", addr_str); |
| 341 | |
| 342 | if (grpc_tcp_trace) { |
| 343 | gpr_log(GPR_DEBUG, "SERVER_CONNECT: incoming connection: %s", addr_str); |
| 344 | } |
| 345 | |
| 346 | fdobj = grpc_fd_create(fd, name); |
| 347 | /* TODO(ctiller): revise this when we have server-side sharding |
| 348 | of channels -- we certainly should not be automatically adding every |
| 349 | incoming channel to every pollset owned by the server */ |
| 350 | for (i = 0; i < sp->server->pollset_count; i++) { |
| 351 | grpc_pollset_add_fd(exec_ctx, sp->server->pollsets[i], fdobj); |
| 352 | } |
| 353 | sp->server->on_accept_cb( |
| 354 | exec_ctx, sp->server->on_accept_cb_arg, |
| 355 | grpc_tcp_create(fdobj, GRPC_TCP_DEFAULT_READ_SLICE_SIZE, addr_str)); |
| 356 | |
| 357 | gpr_free(name); |
| 358 | gpr_free(addr_str); |
| 359 | } |
| 360 | |
yang-g | b063c87 | 2015-10-07 11:40:13 -0700 | [diff] [blame] | 361 | GPR_UNREACHABLE_CODE(return ); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 362 | |
| 363 | error: |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 364 | gpr_mu_lock(&sp->server->mu); |
| 365 | if (0 == --sp->server->active_ports) { |
| 366 | gpr_mu_unlock(&sp->server->mu); |
| 367 | deactivated_all_ports(exec_ctx, sp->server); |
| 368 | } else { |
| 369 | gpr_mu_unlock(&sp->server->mu); |
| 370 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 371 | } |
| 372 | |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 373 | static grpc_tcp_listener *add_socket_to_server(grpc_tcp_server *s, int fd, |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 374 | const struct sockaddr *addr, |
| 375 | size_t addr_len) { |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 376 | grpc_tcp_listener *sp = NULL; |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 377 | int port; |
Craig Tiller | fa275a9 | 2015-06-01 13:55:54 -0700 | [diff] [blame] | 378 | char *addr_str; |
| 379 | char *name; |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 380 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 381 | port = prepare_socket(fd, addr, addr_len); |
| 382 | if (port >= 0) { |
| 383 | grpc_sockaddr_to_string(&addr_str, (struct sockaddr *)&addr, 1); |
| 384 | gpr_asprintf(&name, "tcp-server-listener:%s", addr_str); |
| 385 | gpr_mu_lock(&s->mu); |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 386 | s->nports++; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 387 | GPR_ASSERT(!s->on_accept_cb && "must add ports before starting server"); |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 388 | sp = gpr_malloc(sizeof(grpc_tcp_listener)); |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 389 | sp->next = s->head; |
| 390 | s->head = sp; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 391 | sp->server = s; |
| 392 | sp->fd = fd; |
| 393 | sp->emfd = grpc_fd_create(fd, name); |
| 394 | memcpy(sp->addr.untyped, addr, addr_len); |
| 395 | sp->addr_len = addr_len; |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 396 | sp->port = port; |
| 397 | sp->is_dual_stack_second_port = 0; |
| 398 | sp->dual_stack_second_port = NULL; |
| 399 | gpr_ref_init(&sp->refs, 1); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 400 | GPR_ASSERT(sp->emfd); |
| 401 | gpr_mu_unlock(&s->mu); |
| 402 | gpr_free(addr_str); |
| 403 | gpr_free(name); |
| 404 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 405 | |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 406 | return sp; |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 407 | } |
| 408 | |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 409 | grpc_tcp_listener *grpc_tcp_server_add_port(grpc_tcp_server *s, |
| 410 | const void *addr, |
| 411 | size_t addr_len) { |
| 412 | int allocated_port = -1; |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 413 | grpc_tcp_listener *sp; |
| 414 | grpc_tcp_listener *sp2 = NULL; |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 415 | int fd; |
| 416 | grpc_dualstack_mode dsmode; |
| 417 | struct sockaddr_in6 addr6_v4mapped; |
| 418 | struct sockaddr_in wild4; |
| 419 | struct sockaddr_in6 wild6; |
| 420 | struct sockaddr_in addr4_copy; |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 421 | struct sockaddr *allocated_addr = NULL; |
| 422 | struct sockaddr_storage sockname_temp; |
| 423 | socklen_t sockname_len; |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 424 | int port; |
| 425 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 426 | if (((struct sockaddr *)addr)->sa_family == AF_UNIX) { |
| 427 | unlink_if_unix_domain_socket(addr); |
| 428 | } |
Craig Tiller | aa31da4 | 2015-02-17 16:33:35 -0800 | [diff] [blame] | 429 | |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 430 | /* Check if this is a wildcard port, and if so, try to keep the port the same |
| 431 | as some previously created listener. */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 432 | if (grpc_sockaddr_get_port(addr) == 0) { |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 433 | for (sp = s->head; sp; sp = sp->next) { |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 434 | sockname_len = sizeof(sockname_temp); |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 435 | if (0 == getsockname(sp->fd, (struct sockaddr *)&sockname_temp, |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 436 | &sockname_len)) { |
| 437 | port = grpc_sockaddr_get_port((struct sockaddr *)&sockname_temp); |
| 438 | if (port > 0) { |
| 439 | allocated_addr = malloc(addr_len); |
| 440 | memcpy(allocated_addr, addr, addr_len); |
| 441 | grpc_sockaddr_set_port(allocated_addr, port); |
| 442 | addr = allocated_addr; |
| 443 | break; |
| 444 | } |
| 445 | } |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 446 | } |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 447 | } |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 448 | |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 449 | sp = NULL; |
| 450 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 451 | if (grpc_sockaddr_to_v4mapped(addr, &addr6_v4mapped)) { |
| 452 | addr = (const struct sockaddr *)&addr6_v4mapped; |
| 453 | addr_len = sizeof(addr6_v4mapped); |
| 454 | } |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 455 | |
| 456 | /* Treat :: or 0.0.0.0 as a family-agnostic wildcard. */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 457 | if (grpc_sockaddr_is_wildcard(addr, &port)) { |
| 458 | grpc_sockaddr_make_wildcards(port, &wild4, &wild6); |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 459 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 460 | /* Try listening on IPv6 first. */ |
| 461 | addr = (struct sockaddr *)&wild6; |
| 462 | addr_len = sizeof(wild6); |
| 463 | fd = grpc_create_dualstack_socket(addr, SOCK_STREAM, 0, &dsmode); |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 464 | sp = add_socket_to_server(s, fd, addr, addr_len); |
| 465 | allocated_port = sp->port; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 466 | if (fd >= 0 && dsmode == GRPC_DSMODE_DUALSTACK) { |
| 467 | goto done; |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 468 | } |
| 469 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 470 | /* If we didn't get a dualstack socket, also listen on 0.0.0.0. */ |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 471 | if (port == 0 && allocated_port > 0) { |
| 472 | grpc_sockaddr_set_port((struct sockaddr *)&wild4, allocated_port); |
| 473 | sp2 = sp; |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 474 | } |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 475 | addr = (struct sockaddr *)&wild4; |
| 476 | addr_len = sizeof(wild4); |
| 477 | } |
| 478 | |
| 479 | fd = grpc_create_dualstack_socket(addr, SOCK_STREAM, 0, &dsmode); |
| 480 | if (fd < 0) { |
| 481 | gpr_log(GPR_ERROR, "Unable to create socket: %s", strerror(errno)); |
| 482 | } |
| 483 | if (dsmode == GRPC_DSMODE_IPV4 && |
| 484 | grpc_sockaddr_is_v4mapped(addr, &addr4_copy)) { |
| 485 | addr = (struct sockaddr *)&addr4_copy; |
| 486 | addr_len = sizeof(addr4_copy); |
| 487 | } |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 488 | sp = add_socket_to_server(s, fd, addr, addr_len); |
| 489 | sp->dual_stack_second_port = sp2; |
| 490 | if (sp2) sp2->is_dual_stack_second_port = 1; |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 491 | |
| 492 | done: |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 493 | gpr_free(allocated_addr); |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 494 | return sp; |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 495 | } |
| 496 | |
Vijay Pai | 7b080ba | 2015-09-29 22:22:36 +0000 | [diff] [blame] | 497 | int grpc_tcp_server_get_fd(grpc_tcp_server *s, unsigned port_index) { |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 498 | grpc_tcp_listener *sp; |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 499 | for (sp = s->head; sp && port_index != 0; sp = sp->next, port_index--); |
| 500 | if (port_index == 0 && sp) { |
| 501 | return sp->fd; |
| 502 | } else { |
| 503 | return -1; |
| 504 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 505 | } |
| 506 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 507 | void grpc_tcp_server_start(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s, |
| 508 | grpc_pollset **pollsets, size_t pollset_count, |
| 509 | grpc_tcp_server_cb on_accept_cb, |
| 510 | void *on_accept_cb_arg) { |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 511 | size_t i; |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 512 | grpc_tcp_listener *sp; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 513 | GPR_ASSERT(on_accept_cb); |
| 514 | gpr_mu_lock(&s->mu); |
| 515 | GPR_ASSERT(!s->on_accept_cb); |
| 516 | GPR_ASSERT(s->active_ports == 0); |
Robbie Shade | 3cd2d18 | 2015-08-28 14:30:35 -0400 | [diff] [blame] | 517 | s->on_accept_cb = on_accept_cb; |
| 518 | s->on_accept_cb_arg = on_accept_cb_arg; |
Craig Tiller | 0189ac0 | 2015-05-11 14:59:19 -0700 | [diff] [blame] | 519 | s->pollsets = pollsets; |
| 520 | s->pollset_count = pollset_count; |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 521 | for (sp = s->head; sp; sp = sp->next) { |
| 522 | for (i = 0; i < pollset_count; i++) { |
| 523 | grpc_pollset_add_fd(exec_ctx, pollsets[i], sp->emfd); |
ctiller | 58393c2 | 2015-01-07 14:03:30 -0800 | [diff] [blame] | 524 | } |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 525 | sp->read_closure.cb = on_read; |
| 526 | sp->read_closure.cb_arg = sp; |
| 527 | grpc_fd_notify_on_read(exec_ctx, sp->emfd, |
| 528 | &sp->read_closure); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 529 | s->active_ports++; |
| 530 | } |
| 531 | gpr_mu_unlock(&s->mu); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 532 | } |
Craig Tiller | 0c0b60c | 2015-01-21 15:49:28 -0800 | [diff] [blame] | 533 | |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 534 | int grpc_tcp_listener_get_port(grpc_tcp_listener *listener) { |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 535 | grpc_tcp_listener *sp = listener; |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 536 | return sp->port; |
| 537 | } |
| 538 | |
| 539 | void grpc_tcp_listener_ref(grpc_tcp_listener *listener) { |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 540 | grpc_tcp_listener *sp = listener; |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 541 | gpr_ref(&sp->refs); |
| 542 | } |
| 543 | |
| 544 | void grpc_tcp_listener_unref(grpc_tcp_listener *listener) { |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 545 | grpc_tcp_listener *sp = listener; |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 546 | if (sp->is_dual_stack_second_port) return; |
| 547 | if (gpr_unref(&sp->refs)) { |
| 548 | if (sp->dual_stack_second_port) gpr_free(sp->dual_stack_second_port); |
| 549 | gpr_free(listener); |
| 550 | } |
| 551 | } |
| 552 | |
Craig Tiller | 190d360 | 2015-02-18 09:23:38 -0800 | [diff] [blame] | 553 | #endif |