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 | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 77 | typedef struct { |
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; |
Craig Tiller | 3382511 | 2015-09-18 07:44:19 -0700 | [diff] [blame] | 87 | grpc_closure read_closure; |
| 88 | grpc_closure destroyed_closure; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 89 | } server_port; |
| 90 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 91 | static void unlink_if_unix_domain_socket(const struct sockaddr_un *un) { |
Craig Tiller | aa31da4 | 2015-02-17 16:33:35 -0800 | [diff] [blame] | 92 | struct stat st; |
| 93 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 94 | if (stat(un->sun_path, &st) == 0 && (st.st_mode & S_IFMT) == S_IFSOCK) { |
| 95 | unlink(un->sun_path); |
| 96 | } |
Craig Tiller | aa31da4 | 2015-02-17 16:33:35 -0800 | [diff] [blame] | 97 | } |
| 98 | |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 99 | /* the overall server */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 100 | struct grpc_tcp_server { |
Robbie Shade | 3cd2d18 | 2015-08-28 14:30:35 -0400 | [diff] [blame] | 101 | /* Called whenever accept() succeeds on a server port. */ |
| 102 | grpc_tcp_server_cb on_accept_cb; |
| 103 | void *on_accept_cb_arg; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 104 | |
| 105 | gpr_mu mu; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 106 | |
| 107 | /* active port count: how many ports are actually still listening */ |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 108 | size_t active_ports; |
| 109 | /* destroyed port count: how many ports are completely destroyed */ |
| 110 | size_t destroyed_ports; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 111 | |
Craig Tiller | 6174b9a | 2015-06-18 08:13:05 -0700 | [diff] [blame] | 112 | /* is this server shutting down? (boolean) */ |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 113 | int shutdown; |
| 114 | |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 115 | /* all listening ports */ |
| 116 | server_port *ports; |
| 117 | size_t nports; |
| 118 | size_t port_capacity; |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 119 | |
| 120 | /* shutdown callback */ |
Craig Tiller | d1bec03 | 2015-09-18 17:29:00 -0700 | [diff] [blame] | 121 | grpc_closure *shutdown_complete; |
Craig Tiller | 0189ac0 | 2015-05-11 14:59:19 -0700 | [diff] [blame] | 122 | |
Craig Tiller | 6174b9a | 2015-06-18 08:13:05 -0700 | [diff] [blame] | 123 | /* all pollsets interested in new connections */ |
Craig Tiller | 0189ac0 | 2015-05-11 14:59:19 -0700 | [diff] [blame] | 124 | grpc_pollset **pollsets; |
Craig Tiller | 6174b9a | 2015-06-18 08:13:05 -0700 | [diff] [blame] | 125 | /* number of pollsets in the pollsets array */ |
Craig Tiller | 0189ac0 | 2015-05-11 14:59:19 -0700 | [diff] [blame] | 126 | size_t pollset_count; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 127 | }; |
| 128 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 129 | grpc_tcp_server *grpc_tcp_server_create(void) { |
| 130 | grpc_tcp_server *s = gpr_malloc(sizeof(grpc_tcp_server)); |
| 131 | gpr_mu_init(&s->mu); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 132 | s->active_ports = 0; |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 133 | s->destroyed_ports = 0; |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 134 | s->shutdown = 0; |
Robbie Shade | 3cd2d18 | 2015-08-28 14:30:35 -0400 | [diff] [blame] | 135 | s->on_accept_cb = NULL; |
| 136 | s->on_accept_cb_arg = NULL; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 137 | s->ports = gpr_malloc(sizeof(server_port) * INIT_PORT_CAP); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 138 | s->nports = 0; |
| 139 | s->port_capacity = INIT_PORT_CAP; |
| 140 | return s; |
| 141 | } |
| 142 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 143 | static void finish_shutdown(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s) { |
| 144 | grpc_exec_ctx_enqueue(exec_ctx, s->shutdown_complete, 1); |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 145 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 146 | gpr_mu_destroy(&s->mu); |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 147 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 148 | gpr_free(s->ports); |
| 149 | gpr_free(s); |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 150 | } |
| 151 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 152 | 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] | 153 | grpc_tcp_server *s = server; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 154 | gpr_mu_lock(&s->mu); |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 155 | s->destroyed_ports++; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 156 | if (s->destroyed_ports == s->nports) { |
| 157 | gpr_mu_unlock(&s->mu); |
| 158 | finish_shutdown(exec_ctx, s); |
| 159 | } else { |
| 160 | GPR_ASSERT(s->destroyed_ports < s->nports); |
| 161 | gpr_mu_unlock(&s->mu); |
| 162 | } |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 163 | } |
| 164 | |
Craig Tiller | 6174b9a | 2015-06-18 08:13:05 -0700 | [diff] [blame] | 165 | /* called when all listening endpoints have been shutdown, so no further |
| 166 | events will be received on them - at this point it's safe to destroy |
| 167 | things */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 168 | 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] | 169 | size_t i; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 170 | |
| 171 | /* delete ALL the things */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 172 | gpr_mu_lock(&s->mu); |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 173 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 174 | if (!s->shutdown) { |
| 175 | gpr_mu_unlock(&s->mu); |
| 176 | return; |
| 177 | } |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame] | 178 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 179 | if (s->nports) { |
| 180 | for (i = 0; i < s->nports; i++) { |
| 181 | server_port *sp = &s->ports[i]; |
| 182 | if (sp->addr.sockaddr.sa_family == AF_UNIX) { |
| 183 | unlink_if_unix_domain_socket(&sp->addr.un); |
| 184 | } |
| 185 | sp->destroyed_closure.cb = destroyed_port; |
| 186 | sp->destroyed_closure.cb_arg = s; |
| 187 | grpc_fd_orphan(exec_ctx, sp->emfd, &sp->destroyed_closure, |
| 188 | "tcp_listener_shutdown"); |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame] | 189 | } |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 190 | gpr_mu_unlock(&s->mu); |
| 191 | } else { |
| 192 | gpr_mu_unlock(&s->mu); |
| 193 | finish_shutdown(exec_ctx, s); |
| 194 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 195 | } |
| 196 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 197 | void grpc_tcp_server_destroy(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s, |
| 198 | grpc_closure *closure) { |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 199 | size_t i; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 200 | gpr_mu_lock(&s->mu); |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 201 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 202 | GPR_ASSERT(!s->shutdown); |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 203 | s->shutdown = 1; |
| 204 | |
Craig Tiller | d1bec03 | 2015-09-18 17:29:00 -0700 | [diff] [blame] | 205 | s->shutdown_complete = closure; |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 206 | |
| 207 | /* shutdown all fd's */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 208 | if (s->active_ports) { |
| 209 | for (i = 0; i < s->nports; i++) { |
| 210 | grpc_fd_shutdown(exec_ctx, s->ports[i].emfd); |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 211 | } |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 212 | gpr_mu_unlock(&s->mu); |
| 213 | } else { |
| 214 | gpr_mu_unlock(&s->mu); |
| 215 | deactivated_all_ports(exec_ctx, s); |
| 216 | } |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 217 | } |
| 218 | |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 219 | /* get max listen queue size on linux */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 220 | static void init_max_accept_queue_size(void) { |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 221 | int n = SOMAXCONN; |
| 222 | char buf[64]; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 223 | FILE *fp = fopen("/proc/sys/net/core/somaxconn", "r"); |
| 224 | if (fp == NULL) { |
| 225 | /* 2.4 kernel. */ |
| 226 | s_max_accept_queue_size = SOMAXCONN; |
| 227 | return; |
| 228 | } |
| 229 | if (fgets(buf, sizeof buf, fp)) { |
| 230 | char *end; |
| 231 | long i = strtol(buf, &end, 10); |
| 232 | if (i > 0 && i <= INT_MAX && end && *end == 0) { |
| 233 | n = (int)i; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 234 | } |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 235 | } |
| 236 | fclose(fp); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 237 | s_max_accept_queue_size = n; |
| 238 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 239 | if (s_max_accept_queue_size < MIN_SAFE_ACCEPT_QUEUE_SIZE) { |
| 240 | gpr_log(GPR_INFO, |
| 241 | "Suspiciously small accept queue (%d) will probably lead to " |
| 242 | "connection drops", |
| 243 | s_max_accept_queue_size); |
| 244 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 245 | } |
| 246 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 247 | static int get_max_accept_queue_size(void) { |
| 248 | 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] | 249 | return s_max_accept_queue_size; |
| 250 | } |
| 251 | |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 252 | /* Prepare a recently-created socket for listening. */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 253 | static int prepare_socket(int fd, const struct sockaddr *addr, |
| 254 | size_t addr_len) { |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 255 | struct sockaddr_storage sockname_temp; |
| 256 | socklen_t sockname_len; |
| 257 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 258 | if (fd < 0) { |
| 259 | goto error; |
| 260 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 261 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 262 | if (!grpc_set_socket_nonblocking(fd, 1) || !grpc_set_socket_cloexec(fd, 1) || |
| 263 | (addr->sa_family != AF_UNIX && (!grpc_set_socket_low_latency(fd, 1) || |
| 264 | !grpc_set_socket_reuse_addr(fd, 1))) || |
| 265 | !grpc_set_socket_no_sigpipe_if_possible(fd)) { |
| 266 | gpr_log(GPR_ERROR, "Unable to configure socket %d: %s", fd, |
| 267 | strerror(errno)); |
| 268 | goto error; |
| 269 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 270 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 271 | GPR_ASSERT(addr_len < ~(socklen_t)0); |
| 272 | if (bind(fd, addr, (socklen_t)addr_len) < 0) { |
| 273 | char *addr_str; |
| 274 | grpc_sockaddr_to_string(&addr_str, addr, 0); |
| 275 | gpr_log(GPR_ERROR, "bind addr=%s: %s", addr_str, strerror(errno)); |
| 276 | gpr_free(addr_str); |
| 277 | goto error; |
| 278 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 279 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 280 | if (listen(fd, get_max_accept_queue_size()) < 0) { |
| 281 | gpr_log(GPR_ERROR, "listen: %s", strerror(errno)); |
| 282 | goto error; |
| 283 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 284 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 285 | sockname_len = sizeof(sockname_temp); |
| 286 | if (getsockname(fd, (struct sockaddr *)&sockname_temp, &sockname_len) < 0) { |
| 287 | goto error; |
| 288 | } |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 289 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 290 | return grpc_sockaddr_get_port((struct sockaddr *)&sockname_temp); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 291 | |
| 292 | error: |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 293 | if (fd >= 0) { |
| 294 | close(fd); |
| 295 | } |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 296 | return -1; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 297 | } |
| 298 | |
| 299 | /* event manager callback when reads are ready */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 300 | static void on_read(grpc_exec_ctx *exec_ctx, void *arg, int success) { |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 301 | server_port *sp = arg; |
Craig Tiller | 0189ac0 | 2015-05-11 14:59:19 -0700 | [diff] [blame] | 302 | grpc_fd *fdobj; |
| 303 | size_t i; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 304 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 305 | if (!success) { |
| 306 | goto error; |
| 307 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 308 | |
| 309 | /* loop until accept4 returns EAGAIN, and then re-arm notification */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 310 | for (;;) { |
| 311 | struct sockaddr_storage addr; |
| 312 | socklen_t addrlen = sizeof(addr); |
| 313 | char *addr_str; |
| 314 | char *name; |
| 315 | /* Note: If we ever decide to return this address to the user, remember to |
| 316 | strip off the ::ffff:0.0.0.0/96 prefix first. */ |
| 317 | int fd = grpc_accept4(sp->fd, (struct sockaddr *)&addr, &addrlen, 1, 1); |
| 318 | if (fd < 0) { |
| 319 | switch (errno) { |
| 320 | case EINTR: |
| 321 | continue; |
| 322 | case EAGAIN: |
| 323 | grpc_fd_notify_on_read(exec_ctx, sp->emfd, &sp->read_closure); |
| 324 | return; |
| 325 | default: |
| 326 | gpr_log(GPR_ERROR, "Failed accept4: %s", strerror(errno)); |
| 327 | goto error; |
| 328 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 329 | } |
| 330 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 331 | grpc_set_socket_no_sigpipe_if_possible(fd); |
| 332 | |
| 333 | addr_str = grpc_sockaddr_to_uri((struct sockaddr *)&addr); |
| 334 | gpr_asprintf(&name, "tcp-server-connection:%s", addr_str); |
| 335 | |
| 336 | if (grpc_tcp_trace) { |
| 337 | gpr_log(GPR_DEBUG, "SERVER_CONNECT: incoming connection: %s", addr_str); |
| 338 | } |
| 339 | |
| 340 | fdobj = grpc_fd_create(fd, name); |
| 341 | /* TODO(ctiller): revise this when we have server-side sharding |
| 342 | of channels -- we certainly should not be automatically adding every |
| 343 | incoming channel to every pollset owned by the server */ |
| 344 | for (i = 0; i < sp->server->pollset_count; i++) { |
| 345 | grpc_pollset_add_fd(exec_ctx, sp->server->pollsets[i], fdobj); |
| 346 | } |
| 347 | sp->server->on_accept_cb( |
| 348 | exec_ctx, sp->server->on_accept_cb_arg, |
| 349 | grpc_tcp_create(fdobj, GRPC_TCP_DEFAULT_READ_SLICE_SIZE, addr_str)); |
| 350 | |
| 351 | gpr_free(name); |
| 352 | gpr_free(addr_str); |
| 353 | } |
| 354 | |
| 355 | abort(); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 356 | |
| 357 | error: |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 358 | gpr_mu_lock(&sp->server->mu); |
| 359 | if (0 == --sp->server->active_ports) { |
| 360 | gpr_mu_unlock(&sp->server->mu); |
| 361 | deactivated_all_ports(exec_ctx, sp->server); |
| 362 | } else { |
| 363 | gpr_mu_unlock(&sp->server->mu); |
| 364 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 365 | } |
| 366 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 367 | static int add_socket_to_server(grpc_tcp_server *s, int fd, |
| 368 | const struct sockaddr *addr, size_t addr_len) { |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 369 | server_port *sp; |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 370 | int port; |
Craig Tiller | fa275a9 | 2015-06-01 13:55:54 -0700 | [diff] [blame] | 371 | char *addr_str; |
| 372 | char *name; |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 373 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 374 | port = prepare_socket(fd, addr, addr_len); |
| 375 | if (port >= 0) { |
| 376 | grpc_sockaddr_to_string(&addr_str, (struct sockaddr *)&addr, 1); |
| 377 | gpr_asprintf(&name, "tcp-server-listener:%s", addr_str); |
| 378 | gpr_mu_lock(&s->mu); |
| 379 | GPR_ASSERT(!s->on_accept_cb && "must add ports before starting server"); |
| 380 | /* append it to the list under a lock */ |
| 381 | if (s->nports == s->port_capacity) { |
| 382 | s->port_capacity *= 2; |
| 383 | s->ports = gpr_realloc(s->ports, sizeof(server_port) * s->port_capacity); |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 384 | } |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 385 | sp = &s->ports[s->nports++]; |
| 386 | sp->server = s; |
| 387 | sp->fd = fd; |
| 388 | sp->emfd = grpc_fd_create(fd, name); |
| 389 | memcpy(sp->addr.untyped, addr, addr_len); |
| 390 | sp->addr_len = addr_len; |
| 391 | GPR_ASSERT(sp->emfd); |
| 392 | gpr_mu_unlock(&s->mu); |
| 393 | gpr_free(addr_str); |
| 394 | gpr_free(name); |
| 395 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 396 | |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 397 | return port; |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 398 | } |
| 399 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 400 | int grpc_tcp_server_add_port(grpc_tcp_server *s, const void *addr, |
| 401 | size_t addr_len) { |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 402 | int allocated_port1 = -1; |
| 403 | int allocated_port2 = -1; |
Nicolas "Pixel" Noble | 213ed91 | 2015-01-30 02:11:35 +0100 | [diff] [blame] | 404 | unsigned i; |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 405 | int fd; |
| 406 | grpc_dualstack_mode dsmode; |
| 407 | struct sockaddr_in6 addr6_v4mapped; |
| 408 | struct sockaddr_in wild4; |
| 409 | struct sockaddr_in6 wild6; |
| 410 | struct sockaddr_in addr4_copy; |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 411 | struct sockaddr *allocated_addr = NULL; |
| 412 | struct sockaddr_storage sockname_temp; |
| 413 | socklen_t sockname_len; |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 414 | int port; |
| 415 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 416 | if (((struct sockaddr *)addr)->sa_family == AF_UNIX) { |
| 417 | unlink_if_unix_domain_socket(addr); |
| 418 | } |
Craig Tiller | aa31da4 | 2015-02-17 16:33:35 -0800 | [diff] [blame] | 419 | |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 420 | /* Check if this is a wildcard port, and if so, try to keep the port the same |
| 421 | as some previously created listener. */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 422 | if (grpc_sockaddr_get_port(addr) == 0) { |
| 423 | for (i = 0; i < s->nports; i++) { |
| 424 | sockname_len = sizeof(sockname_temp); |
| 425 | if (0 == getsockname(s->ports[i].fd, (struct sockaddr *)&sockname_temp, |
| 426 | &sockname_len)) { |
| 427 | port = grpc_sockaddr_get_port((struct sockaddr *)&sockname_temp); |
| 428 | if (port > 0) { |
| 429 | allocated_addr = malloc(addr_len); |
| 430 | memcpy(allocated_addr, addr, addr_len); |
| 431 | grpc_sockaddr_set_port(allocated_addr, port); |
| 432 | addr = allocated_addr; |
| 433 | break; |
| 434 | } |
| 435 | } |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 436 | } |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 437 | } |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 438 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 439 | if (grpc_sockaddr_to_v4mapped(addr, &addr6_v4mapped)) { |
| 440 | addr = (const struct sockaddr *)&addr6_v4mapped; |
| 441 | addr_len = sizeof(addr6_v4mapped); |
| 442 | } |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 443 | |
| 444 | /* Treat :: or 0.0.0.0 as a family-agnostic wildcard. */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 445 | if (grpc_sockaddr_is_wildcard(addr, &port)) { |
| 446 | grpc_sockaddr_make_wildcards(port, &wild4, &wild6); |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 447 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 448 | /* Try listening on IPv6 first. */ |
| 449 | addr = (struct sockaddr *)&wild6; |
| 450 | addr_len = sizeof(wild6); |
| 451 | fd = grpc_create_dualstack_socket(addr, SOCK_STREAM, 0, &dsmode); |
| 452 | allocated_port1 = add_socket_to_server(s, fd, addr, addr_len); |
| 453 | if (fd >= 0 && dsmode == GRPC_DSMODE_DUALSTACK) { |
| 454 | goto done; |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 455 | } |
| 456 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 457 | /* If we didn't get a dualstack socket, also listen on 0.0.0.0. */ |
| 458 | if (port == 0 && allocated_port1 > 0) { |
| 459 | grpc_sockaddr_set_port((struct sockaddr *)&wild4, allocated_port1); |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 460 | } |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 461 | addr = (struct sockaddr *)&wild4; |
| 462 | addr_len = sizeof(wild4); |
| 463 | } |
| 464 | |
| 465 | fd = grpc_create_dualstack_socket(addr, SOCK_STREAM, 0, &dsmode); |
| 466 | if (fd < 0) { |
| 467 | gpr_log(GPR_ERROR, "Unable to create socket: %s", strerror(errno)); |
| 468 | } |
| 469 | if (dsmode == GRPC_DSMODE_IPV4 && |
| 470 | grpc_sockaddr_is_v4mapped(addr, &addr4_copy)) { |
| 471 | addr = (struct sockaddr *)&addr4_copy; |
| 472 | addr_len = sizeof(addr4_copy); |
| 473 | } |
| 474 | allocated_port2 = add_socket_to_server(s, fd, addr, addr_len); |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 475 | |
| 476 | done: |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 477 | gpr_free(allocated_addr); |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 478 | return allocated_port1 >= 0 ? allocated_port1 : allocated_port2; |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 479 | } |
| 480 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 481 | int grpc_tcp_server_get_fd(grpc_tcp_server *s, unsigned index) { |
Nicolas "Pixel" Noble | 213ed91 | 2015-01-30 02:11:35 +0100 | [diff] [blame] | 482 | return (index < s->nports) ? s->ports[index].fd : -1; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 483 | } |
| 484 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 485 | void grpc_tcp_server_start(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s, |
| 486 | grpc_pollset **pollsets, size_t pollset_count, |
| 487 | grpc_tcp_server_cb on_accept_cb, |
| 488 | void *on_accept_cb_arg) { |
Craig Tiller | 20bc56d | 2015-02-12 09:02:56 -0800 | [diff] [blame] | 489 | size_t i, j; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 490 | GPR_ASSERT(on_accept_cb); |
| 491 | gpr_mu_lock(&s->mu); |
| 492 | GPR_ASSERT(!s->on_accept_cb); |
| 493 | GPR_ASSERT(s->active_ports == 0); |
Robbie Shade | 3cd2d18 | 2015-08-28 14:30:35 -0400 | [diff] [blame] | 494 | s->on_accept_cb = on_accept_cb; |
| 495 | s->on_accept_cb_arg = on_accept_cb_arg; |
Craig Tiller | 0189ac0 | 2015-05-11 14:59:19 -0700 | [diff] [blame] | 496 | s->pollsets = pollsets; |
| 497 | s->pollset_count = pollset_count; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 498 | for (i = 0; i < s->nports; i++) { |
| 499 | for (j = 0; j < pollset_count; j++) { |
| 500 | grpc_pollset_add_fd(exec_ctx, pollsets[j], s->ports[i].emfd); |
ctiller | 58393c2 | 2015-01-07 14:03:30 -0800 | [diff] [blame] | 501 | } |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame^] | 502 | s->ports[i].read_closure.cb = on_read; |
| 503 | s->ports[i].read_closure.cb_arg = &s->ports[i]; |
| 504 | grpc_fd_notify_on_read(exec_ctx, s->ports[i].emfd, |
| 505 | &s->ports[i].read_closure); |
| 506 | s->active_ports++; |
| 507 | } |
| 508 | gpr_mu_unlock(&s->mu); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 509 | } |
Craig Tiller | 0c0b60c | 2015-01-21 15:49:28 -0800 | [diff] [blame] | 510 | |
Craig Tiller | 190d360 | 2015-02-18 09:23:38 -0800 | [diff] [blame] | 511 | #endif |