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 */ |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 77 | typedef struct |
| 78 | { |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 79 | int fd; |
ctiller | 18b49ab | 2014-12-09 14:39:16 -0800 | [diff] [blame] | 80 | grpc_fd *emfd; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 81 | grpc_tcp_server *server; |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 82 | union |
| 83 | { |
Craig Tiller | 772c97b | 2015-02-17 08:07:34 -0800 | [diff] [blame] | 84 | gpr_uint8 untyped[GRPC_MAX_SOCKADDR_SIZE]; |
| 85 | struct sockaddr sockaddr; |
| 86 | struct sockaddr_un un; |
| 87 | } addr; |
Craig Tiller | f96dfc3 | 2015-09-10 14:43:18 -0700 | [diff] [blame] | 88 | size_t addr_len; |
Craig Tiller | 3382511 | 2015-09-18 07:44:19 -0700 | [diff] [blame] | 89 | grpc_closure read_closure; |
| 90 | grpc_closure destroyed_closure; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 91 | } server_port; |
| 92 | |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 93 | static void |
| 94 | unlink_if_unix_domain_socket (const struct sockaddr_un *un) |
| 95 | { |
Craig Tiller | aa31da4 | 2015-02-17 16:33:35 -0800 | [diff] [blame] | 96 | struct stat st; |
| 97 | |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 98 | if (stat (un->sun_path, &st) == 0 && (st.st_mode & S_IFMT) == S_IFSOCK) |
| 99 | { |
| 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 | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 105 | struct grpc_tcp_server |
| 106 | { |
Robbie Shade | 3cd2d18 | 2015-08-28 14:30:35 -0400 | [diff] [blame] | 107 | /* Called whenever accept() succeeds on a server port. */ |
| 108 | grpc_tcp_server_cb on_accept_cb; |
| 109 | void *on_accept_cb_arg; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 110 | |
| 111 | gpr_mu mu; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 112 | |
| 113 | /* active port count: how many ports are actually still listening */ |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 114 | size_t active_ports; |
| 115 | /* destroyed port count: how many ports are completely destroyed */ |
| 116 | size_t destroyed_ports; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 117 | |
Craig Tiller | 6174b9a | 2015-06-18 08:13:05 -0700 | [diff] [blame] | 118 | /* is this server shutting down? (boolean) */ |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 119 | int shutdown; |
| 120 | |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 121 | /* all listening ports */ |
| 122 | server_port *ports; |
| 123 | size_t nports; |
| 124 | size_t port_capacity; |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 125 | |
| 126 | /* shutdown callback */ |
Craig Tiller | d1bec03 | 2015-09-18 17:29:00 -0700 | [diff] [blame] | 127 | grpc_closure *shutdown_complete; |
Craig Tiller | 0189ac0 | 2015-05-11 14:59:19 -0700 | [diff] [blame] | 128 | |
Craig Tiller | 6174b9a | 2015-06-18 08:13:05 -0700 | [diff] [blame] | 129 | /* all pollsets interested in new connections */ |
Craig Tiller | 0189ac0 | 2015-05-11 14:59:19 -0700 | [diff] [blame] | 130 | grpc_pollset **pollsets; |
Craig Tiller | 6174b9a | 2015-06-18 08:13:05 -0700 | [diff] [blame] | 131 | /* number of pollsets in the pollsets array */ |
Craig Tiller | 0189ac0 | 2015-05-11 14:59:19 -0700 | [diff] [blame] | 132 | size_t pollset_count; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 133 | }; |
| 134 | |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 135 | grpc_tcp_server * |
| 136 | grpc_tcp_server_create (void) |
| 137 | { |
| 138 | grpc_tcp_server *s = gpr_malloc (sizeof (grpc_tcp_server)); |
| 139 | gpr_mu_init (&s->mu); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 140 | s->active_ports = 0; |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 141 | s->destroyed_ports = 0; |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 142 | s->shutdown = 0; |
Robbie Shade | 3cd2d18 | 2015-08-28 14:30:35 -0400 | [diff] [blame] | 143 | s->on_accept_cb = NULL; |
| 144 | s->on_accept_cb_arg = NULL; |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 145 | s->ports = gpr_malloc (sizeof (server_port) * INIT_PORT_CAP); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 146 | s->nports = 0; |
| 147 | s->port_capacity = INIT_PORT_CAP; |
| 148 | return s; |
| 149 | } |
| 150 | |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 151 | static void |
| 152 | finish_shutdown (grpc_tcp_server * s, grpc_closure_list * closure_list) |
| 153 | { |
| 154 | grpc_closure_list_add (closure_list, s->shutdown_complete, 1); |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 155 | |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 156 | gpr_mu_destroy (&s->mu); |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 157 | |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 158 | gpr_free (s->ports); |
| 159 | gpr_free (s); |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 160 | } |
| 161 | |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 162 | static void |
| 163 | destroyed_port (void *server, int success, grpc_closure_list * closure_list) |
| 164 | { |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 165 | grpc_tcp_server *s = server; |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 166 | gpr_mu_lock (&s->mu); |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 167 | s->destroyed_ports++; |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 168 | if (s->destroyed_ports == s->nports) |
| 169 | { |
| 170 | gpr_mu_unlock (&s->mu); |
| 171 | finish_shutdown (s, closure_list); |
| 172 | } |
| 173 | else |
| 174 | { |
| 175 | GPR_ASSERT (s->destroyed_ports < s->nports); |
| 176 | gpr_mu_unlock (&s->mu); |
| 177 | } |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 178 | } |
| 179 | |
Craig Tiller | 6174b9a | 2015-06-18 08:13:05 -0700 | [diff] [blame] | 180 | /* called when all listening endpoints have been shutdown, so no further |
| 181 | events will be received on them - at this point it's safe to destroy |
| 182 | things */ |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 183 | static void |
| 184 | deactivated_all_ports (grpc_tcp_server * s, grpc_closure_list * closure_list) |
| 185 | { |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 186 | size_t i; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 187 | |
| 188 | /* delete ALL the things */ |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 189 | gpr_mu_lock (&s->mu); |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 190 | |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 191 | if (!s->shutdown) |
| 192 | { |
| 193 | gpr_mu_unlock (&s->mu); |
| 194 | return; |
Craig Tiller | ae7fe92 | 2015-02-13 23:16:32 -0800 | [diff] [blame] | 195 | } |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 196 | |
| 197 | if (s->nports) |
| 198 | { |
| 199 | for (i = 0; i < s->nports; i++) |
| 200 | { |
| 201 | server_port *sp = &s->ports[i]; |
| 202 | if (sp->addr.sockaddr.sa_family == AF_UNIX) |
| 203 | { |
| 204 | unlink_if_unix_domain_socket (&sp->addr.un); |
| 205 | } |
| 206 | sp->destroyed_closure.cb = destroyed_port; |
| 207 | sp->destroyed_closure.cb_arg = s; |
| 208 | grpc_fd_orphan (sp->emfd, &sp->destroyed_closure, "tcp_listener_shutdown", closure_list); |
| 209 | } |
| 210 | gpr_mu_unlock (&s->mu); |
| 211 | } |
| 212 | else |
| 213 | { |
| 214 | gpr_mu_unlock (&s->mu); |
| 215 | finish_shutdown (s, closure_list); |
| 216 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 217 | } |
| 218 | |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 219 | void |
| 220 | grpc_tcp_server_destroy (grpc_tcp_server * s, grpc_closure * closure, grpc_closure_list * closure_list) |
| 221 | { |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 222 | size_t i; |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 223 | gpr_mu_lock (&s->mu); |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 224 | |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 225 | GPR_ASSERT (!s->shutdown); |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 226 | s->shutdown = 1; |
| 227 | |
Craig Tiller | d1bec03 | 2015-09-18 17:29:00 -0700 | [diff] [blame] | 228 | s->shutdown_complete = closure; |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 229 | |
| 230 | /* shutdown all fd's */ |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 231 | if (s->active_ports) |
| 232 | { |
| 233 | for (i = 0; i < s->nports; i++) |
| 234 | { |
| 235 | grpc_fd_shutdown (s->ports[i].emfd, closure_list); |
| 236 | } |
| 237 | gpr_mu_unlock (&s->mu); |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 238 | } |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 239 | else |
| 240 | { |
| 241 | gpr_mu_unlock (&s->mu); |
| 242 | deactivated_all_ports (s, closure_list); |
| 243 | } |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 244 | } |
| 245 | |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 246 | /* get max listen queue size on linux */ |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 247 | static void |
| 248 | init_max_accept_queue_size (void) |
| 249 | { |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 250 | int n = SOMAXCONN; |
| 251 | char buf[64]; |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 252 | FILE *fp = fopen ("/proc/sys/net/core/somaxconn", "r"); |
| 253 | if (fp == NULL) |
| 254 | { |
| 255 | /* 2.4 kernel. */ |
| 256 | s_max_accept_queue_size = SOMAXCONN; |
| 257 | return; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 258 | } |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 259 | if (fgets (buf, sizeof buf, fp)) |
| 260 | { |
| 261 | char *end; |
| 262 | long i = strtol (buf, &end, 10); |
| 263 | if (i > 0 && i <= INT_MAX && end && *end == 0) |
| 264 | { |
| 265 | n = (int) i; |
| 266 | } |
| 267 | } |
| 268 | fclose (fp); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 269 | s_max_accept_queue_size = n; |
| 270 | |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 271 | if (s_max_accept_queue_size < MIN_SAFE_ACCEPT_QUEUE_SIZE) |
| 272 | { |
| 273 | gpr_log (GPR_INFO, "Suspiciously small accept queue (%d) will probably lead to " "connection drops", s_max_accept_queue_size); |
| 274 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 275 | } |
| 276 | |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 277 | static int |
| 278 | get_max_accept_queue_size (void) |
| 279 | { |
| 280 | 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] | 281 | return s_max_accept_queue_size; |
| 282 | } |
| 283 | |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 284 | /* Prepare a recently-created socket for listening. */ |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 285 | static int |
| 286 | prepare_socket (int fd, const struct sockaddr *addr, size_t addr_len) |
| 287 | { |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 288 | struct sockaddr_storage sockname_temp; |
| 289 | socklen_t sockname_len; |
| 290 | |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 291 | if (fd < 0) |
| 292 | { |
| 293 | goto error; |
| 294 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 295 | |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 296 | if (!grpc_set_socket_nonblocking (fd, 1) || !grpc_set_socket_cloexec (fd, 1) || (addr->sa_family != AF_UNIX && (!grpc_set_socket_low_latency (fd, 1) || !grpc_set_socket_reuse_addr (fd, 1))) || !grpc_set_socket_no_sigpipe_if_possible (fd)) |
| 297 | { |
| 298 | gpr_log (GPR_ERROR, "Unable to configure socket %d: %s", fd, strerror (errno)); |
| 299 | goto error; |
| 300 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 301 | |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 302 | GPR_ASSERT (addr_len < ~(socklen_t) 0); |
| 303 | if (bind (fd, addr, (socklen_t) addr_len) < 0) |
| 304 | { |
| 305 | char *addr_str; |
| 306 | grpc_sockaddr_to_string (&addr_str, addr, 0); |
| 307 | gpr_log (GPR_ERROR, "bind addr=%s: %s", addr_str, strerror (errno)); |
| 308 | gpr_free (addr_str); |
| 309 | goto error; |
| 310 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 311 | |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 312 | if (listen (fd, get_max_accept_queue_size ()) < 0) |
| 313 | { |
| 314 | gpr_log (GPR_ERROR, "listen: %s", strerror (errno)); |
| 315 | goto error; |
| 316 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 317 | |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 318 | sockname_len = sizeof (sockname_temp); |
| 319 | if (getsockname (fd, (struct sockaddr *) &sockname_temp, &sockname_len) < 0) |
| 320 | { |
| 321 | goto error; |
| 322 | } |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 323 | |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 324 | return grpc_sockaddr_get_port ((struct sockaddr *) &sockname_temp); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 325 | |
| 326 | error: |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 327 | if (fd >= 0) |
| 328 | { |
| 329 | close (fd); |
| 330 | } |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 331 | return -1; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 332 | } |
| 333 | |
| 334 | /* event manager callback when reads are ready */ |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 335 | static void |
| 336 | on_read (void *arg, int success, grpc_closure_list * closure_list) |
| 337 | { |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 338 | server_port *sp = arg; |
Craig Tiller | 0189ac0 | 2015-05-11 14:59:19 -0700 | [diff] [blame] | 339 | grpc_fd *fdobj; |
| 340 | size_t i; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 341 | |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 342 | if (!success) |
| 343 | { |
| 344 | goto error; |
| 345 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 346 | |
| 347 | /* loop until accept4 returns EAGAIN, and then re-arm notification */ |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 348 | for (;;) |
| 349 | { |
| 350 | struct sockaddr_storage addr; |
| 351 | socklen_t addrlen = sizeof (addr); |
| 352 | char *addr_str; |
| 353 | char *name; |
| 354 | /* Note: If we ever decide to return this address to the user, remember to |
| 355 | strip off the ::ffff:0.0.0.0/96 prefix first. */ |
| 356 | int fd = grpc_accept4 (sp->fd, (struct sockaddr *) &addr, &addrlen, 1, 1); |
| 357 | if (fd < 0) |
| 358 | { |
| 359 | switch (errno) |
| 360 | { |
| 361 | case EINTR: |
| 362 | continue; |
| 363 | case EAGAIN: |
| 364 | grpc_fd_notify_on_read (sp->emfd, &sp->read_closure, closure_list); |
| 365 | return; |
| 366 | default: |
| 367 | gpr_log (GPR_ERROR, "Failed accept4: %s", strerror (errno)); |
| 368 | goto error; |
| 369 | } |
| 370 | } |
| 371 | |
| 372 | grpc_set_socket_no_sigpipe_if_possible (fd); |
| 373 | |
| 374 | addr_str = grpc_sockaddr_to_uri ((struct sockaddr *) &addr); |
| 375 | gpr_asprintf (&name, "tcp-server-connection:%s", addr_str); |
| 376 | |
| 377 | if (grpc_tcp_trace) |
| 378 | { |
| 379 | gpr_log (GPR_DEBUG, "SERVER_CONNECT: incoming connection: %s", addr_str); |
| 380 | } |
| 381 | |
| 382 | fdobj = grpc_fd_create (fd, name); |
| 383 | /* TODO(ctiller): revise this when we have server-side sharding |
| 384 | of channels -- we certainly should not be automatically adding every |
| 385 | incoming channel to every pollset owned by the server */ |
| 386 | for (i = 0; i < sp->server->pollset_count; i++) |
| 387 | { |
| 388 | grpc_pollset_add_fd (sp->server->pollsets[i], fdobj, closure_list); |
| 389 | } |
| 390 | sp->server->on_accept_cb (sp->server->on_accept_cb_arg, grpc_tcp_create (fdobj, GRPC_TCP_DEFAULT_READ_SLICE_SIZE, addr_str), closure_list); |
| 391 | |
| 392 | gpr_free (name); |
| 393 | gpr_free (addr_str); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 394 | } |
| 395 | |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 396 | abort (); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 397 | |
| 398 | error: |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 399 | gpr_mu_lock (&sp->server->mu); |
| 400 | if (0 == --sp->server->active_ports) |
| 401 | { |
| 402 | gpr_mu_unlock (&sp->server->mu); |
| 403 | deactivated_all_ports (sp->server, closure_list); |
| 404 | } |
| 405 | else |
| 406 | { |
| 407 | gpr_mu_unlock (&sp->server->mu); |
| 408 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 409 | } |
| 410 | |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 411 | static int |
| 412 | add_socket_to_server (grpc_tcp_server * s, int fd, const struct sockaddr *addr, size_t addr_len) |
| 413 | { |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 414 | server_port *sp; |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 415 | int port; |
Craig Tiller | fa275a9 | 2015-06-01 13:55:54 -0700 | [diff] [blame] | 416 | char *addr_str; |
| 417 | char *name; |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 418 | |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 419 | port = prepare_socket (fd, addr, addr_len); |
| 420 | if (port >= 0) |
| 421 | { |
| 422 | grpc_sockaddr_to_string (&addr_str, (struct sockaddr *) &addr, 1); |
| 423 | gpr_asprintf (&name, "tcp-server-listener:%s", addr_str); |
| 424 | gpr_mu_lock (&s->mu); |
| 425 | GPR_ASSERT (!s->on_accept_cb && "must add ports before starting server"); |
| 426 | /* append it to the list under a lock */ |
| 427 | if (s->nports == s->port_capacity) |
| 428 | { |
| 429 | s->port_capacity *= 2; |
| 430 | s->ports = gpr_realloc (s->ports, sizeof (server_port) * s->port_capacity); |
| 431 | } |
| 432 | sp = &s->ports[s->nports++]; |
| 433 | sp->server = s; |
| 434 | sp->fd = fd; |
| 435 | sp->emfd = grpc_fd_create (fd, name); |
| 436 | memcpy (sp->addr.untyped, addr, addr_len); |
| 437 | sp->addr_len = addr_len; |
| 438 | GPR_ASSERT (sp->emfd); |
| 439 | gpr_mu_unlock (&s->mu); |
| 440 | gpr_free (addr_str); |
| 441 | gpr_free (name); |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 442 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 443 | |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 444 | return port; |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 445 | } |
| 446 | |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 447 | int |
| 448 | grpc_tcp_server_add_port (grpc_tcp_server * s, const void *addr, size_t addr_len) |
| 449 | { |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 450 | int allocated_port1 = -1; |
| 451 | int allocated_port2 = -1; |
Nicolas "Pixel" Noble | 213ed91 | 2015-01-30 02:11:35 +0100 | [diff] [blame] | 452 | unsigned i; |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 453 | int fd; |
| 454 | grpc_dualstack_mode dsmode; |
| 455 | struct sockaddr_in6 addr6_v4mapped; |
| 456 | struct sockaddr_in wild4; |
| 457 | struct sockaddr_in6 wild6; |
| 458 | struct sockaddr_in addr4_copy; |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 459 | struct sockaddr *allocated_addr = NULL; |
| 460 | struct sockaddr_storage sockname_temp; |
| 461 | socklen_t sockname_len; |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 462 | int port; |
| 463 | |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 464 | if (((struct sockaddr *) addr)->sa_family == AF_UNIX) |
| 465 | { |
| 466 | unlink_if_unix_domain_socket (addr); |
| 467 | } |
Craig Tiller | aa31da4 | 2015-02-17 16:33:35 -0800 | [diff] [blame] | 468 | |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 469 | /* Check if this is a wildcard port, and if so, try to keep the port the same |
| 470 | as some previously created listener. */ |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 471 | if (grpc_sockaddr_get_port (addr) == 0) |
| 472 | { |
| 473 | for (i = 0; i < s->nports; i++) |
| 474 | { |
| 475 | sockname_len = sizeof (sockname_temp); |
| 476 | if (0 == getsockname (s->ports[i].fd, (struct sockaddr *) &sockname_temp, &sockname_len)) |
| 477 | { |
| 478 | port = grpc_sockaddr_get_port ((struct sockaddr *) &sockname_temp); |
| 479 | if (port > 0) |
| 480 | { |
| 481 | allocated_addr = malloc (addr_len); |
| 482 | memcpy (allocated_addr, addr, addr_len); |
| 483 | grpc_sockaddr_set_port (allocated_addr, port); |
| 484 | addr = allocated_addr; |
| 485 | break; |
| 486 | } |
| 487 | } |
| 488 | } |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 489 | } |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 490 | |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 491 | if (grpc_sockaddr_to_v4mapped (addr, &addr6_v4mapped)) |
| 492 | { |
| 493 | addr = (const struct sockaddr *) &addr6_v4mapped; |
| 494 | addr_len = sizeof (addr6_v4mapped); |
| 495 | } |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 496 | |
| 497 | /* Treat :: or 0.0.0.0 as a family-agnostic wildcard. */ |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 498 | if (grpc_sockaddr_is_wildcard (addr, &port)) |
| 499 | { |
| 500 | grpc_sockaddr_make_wildcards (port, &wild4, &wild6); |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 501 | |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 502 | /* Try listening on IPv6 first. */ |
| 503 | addr = (struct sockaddr *) &wild6; |
| 504 | addr_len = sizeof (wild6); |
| 505 | fd = grpc_create_dualstack_socket (addr, SOCK_STREAM, 0, &dsmode); |
| 506 | allocated_port1 = add_socket_to_server (s, fd, addr, addr_len); |
| 507 | if (fd >= 0 && dsmode == GRPC_DSMODE_DUALSTACK) |
| 508 | { |
| 509 | goto done; |
| 510 | } |
| 511 | |
| 512 | /* If we didn't get a dualstack socket, also listen on 0.0.0.0. */ |
| 513 | if (port == 0 && allocated_port1 > 0) |
| 514 | { |
| 515 | grpc_sockaddr_set_port ((struct sockaddr *) &wild4, allocated_port1); |
| 516 | } |
| 517 | addr = (struct sockaddr *) &wild4; |
| 518 | addr_len = sizeof (wild4); |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 519 | } |
| 520 | |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 521 | fd = grpc_create_dualstack_socket (addr, SOCK_STREAM, 0, &dsmode); |
| 522 | if (fd < 0) |
| 523 | { |
| 524 | gpr_log (GPR_ERROR, "Unable to create socket: %s", strerror (errno)); |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 525 | } |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 526 | if (dsmode == GRPC_DSMODE_IPV4 && grpc_sockaddr_is_v4mapped (addr, &addr4_copy)) |
| 527 | { |
| 528 | addr = (struct sockaddr *) &addr4_copy; |
| 529 | addr_len = sizeof (addr4_copy); |
| 530 | } |
| 531 | allocated_port2 = add_socket_to_server (s, fd, addr, addr_len); |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 532 | |
| 533 | done: |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 534 | gpr_free (allocated_addr); |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 535 | return allocated_port1 >= 0 ? allocated_port1 : allocated_port2; |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 536 | } |
| 537 | |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 538 | int |
| 539 | grpc_tcp_server_get_fd (grpc_tcp_server * s, unsigned index) |
| 540 | { |
Nicolas "Pixel" Noble | 213ed91 | 2015-01-30 02:11:35 +0100 | [diff] [blame] | 541 | return (index < s->nports) ? s->ports[index].fd : -1; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 542 | } |
| 543 | |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 544 | void |
| 545 | grpc_tcp_server_start (grpc_tcp_server * s, grpc_pollset ** pollsets, size_t pollset_count, grpc_tcp_server_cb on_accept_cb, void *on_accept_cb_arg, grpc_closure_list * closure_list) |
| 546 | { |
Craig Tiller | 20bc56d | 2015-02-12 09:02:56 -0800 | [diff] [blame] | 547 | size_t i, j; |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 548 | GPR_ASSERT (on_accept_cb); |
| 549 | gpr_mu_lock (&s->mu); |
| 550 | GPR_ASSERT (!s->on_accept_cb); |
| 551 | GPR_ASSERT (s->active_ports == 0); |
Robbie Shade | 3cd2d18 | 2015-08-28 14:30:35 -0400 | [diff] [blame] | 552 | s->on_accept_cb = on_accept_cb; |
| 553 | s->on_accept_cb_arg = on_accept_cb_arg; |
Craig Tiller | 0189ac0 | 2015-05-11 14:59:19 -0700 | [diff] [blame] | 554 | s->pollsets = pollsets; |
| 555 | s->pollset_count = pollset_count; |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 556 | for (i = 0; i < s->nports; i++) |
| 557 | { |
| 558 | for (j = 0; j < pollset_count; j++) |
| 559 | { |
| 560 | grpc_pollset_add_fd (pollsets[j], s->ports[i].emfd, closure_list); |
| 561 | } |
| 562 | s->ports[i].read_closure.cb = on_read; |
| 563 | s->ports[i].read_closure.cb_arg = &s->ports[i]; |
| 564 | grpc_fd_notify_on_read (s->ports[i].emfd, &s->ports[i].read_closure, closure_list); |
| 565 | s->active_ports++; |
ctiller | 58393c2 | 2015-01-07 14:03:30 -0800 | [diff] [blame] | 566 | } |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame^] | 567 | gpr_mu_unlock (&s->mu); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 568 | } |
Craig Tiller | 0c0b60c | 2015-01-21 15:49:28 -0800 | [diff] [blame] | 569 | |
Craig Tiller | 190d360 | 2015-02-18 09:23:38 -0800 | [diff] [blame] | 570 | #endif |