Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 1 | /* |
| 2 | * |
Craig Tiller | 6169d5f | 2016-03-31 07:46:18 -0700 | [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 | |
murgatroid99 | 5407089 | 2016-08-08 17:01:18 -0700 | [diff] [blame] | 39 | #include "src/core/lib/iomgr/port.h" |
Craig Tiller | 0c0b60c | 2015-01-21 15:49:28 -0800 | [diff] [blame] | 40 | |
murgatroid99 | 623dd4f | 2016-08-08 17:31:27 -0700 | [diff] [blame] | 41 | #ifdef GRPC_POSIX_SOCKET |
Craig Tiller | 0c0b60c | 2015-01-21 15:49:28 -0800 | [diff] [blame] | 42 | |
Craig Tiller | 9533d04 | 2016-03-25 17:11:06 -0700 | [diff] [blame] | 43 | #include "src/core/lib/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> |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 55 | #include <unistd.h> |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 56 | |
Craig Tiller | f40df23 | 2016-03-25 13:38:14 -0700 | [diff] [blame] | 57 | #include <grpc/support/alloc.h> |
| 58 | #include <grpc/support/log.h> |
| 59 | #include <grpc/support/string_util.h> |
| 60 | #include <grpc/support/sync.h> |
| 61 | #include <grpc/support/time.h> |
Craig Tiller | c027e77 | 2016-05-03 16:27:00 -0700 | [diff] [blame] | 62 | #include <grpc/support/useful.h> |
| 63 | |
Craig Tiller | 9533d04 | 2016-03-25 17:11:06 -0700 | [diff] [blame] | 64 | #include "src/core/lib/iomgr/resolve_address.h" |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 65 | #include "src/core/lib/iomgr/sockaddr.h" |
Craig Tiller | 9533d04 | 2016-03-25 17:11:06 -0700 | [diff] [blame] | 66 | #include "src/core/lib/iomgr/sockaddr_utils.h" |
| 67 | #include "src/core/lib/iomgr/socket_utils_posix.h" |
| 68 | #include "src/core/lib/iomgr/tcp_posix.h" |
| 69 | #include "src/core/lib/iomgr/unix_sockets_posix.h" |
| 70 | #include "src/core/lib/support/string.h" |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 71 | |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 72 | #define MIN_SAFE_ACCEPT_QUEUE_SIZE 100 |
| 73 | |
| 74 | static gpr_once s_init_max_accept_queue_size; |
| 75 | static int s_max_accept_queue_size; |
| 76 | |
| 77 | /* one listening port */ |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 78 | typedef struct grpc_tcp_listener grpc_tcp_listener; |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 79 | struct grpc_tcp_listener { |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 80 | int fd; |
ctiller | 18b49ab | 2014-12-09 14:39:16 -0800 | [diff] [blame] | 81 | grpc_fd *emfd; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 82 | grpc_tcp_server *server; |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 83 | grpc_resolved_address addr; |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 84 | int port; |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 85 | unsigned port_index; |
| 86 | unsigned fd_index; |
Craig Tiller | 3382511 | 2015-09-18 07:44:19 -0700 | [diff] [blame] | 87 | grpc_closure read_closure; |
| 88 | grpc_closure destroyed_closure; |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 89 | struct grpc_tcp_listener *next; |
Dan Born | ad1f31f | 2016-07-08 13:24:49 -0700 | [diff] [blame] | 90 | /* sibling is a linked list of all listeners for a given port. add_port and |
| 91 | clone_port place all new listeners in the same sibling list. A member of |
| 92 | the 'sibling' list is also a member of the 'next' list. The head of each |
| 93 | sibling list has is_sibling==0, and subsequent members of sibling lists |
| 94 | have is_sibling==1. is_sibling allows separate sibling lists to be |
| 95 | identified while iterating through 'next'. */ |
Nicolas "Pixel" Noble | d86115e | 2015-11-20 05:56:25 +0100 | [diff] [blame] | 96 | struct grpc_tcp_listener *sibling; |
| 97 | int is_sibling; |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 98 | }; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 99 | |
| 100 | /* the overall server */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 101 | struct grpc_tcp_server { |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 102 | gpr_refcount refs; |
Robbie Shade | 3cd2d18 | 2015-08-28 14:30:35 -0400 | [diff] [blame] | 103 | /* Called whenever accept() succeeds on a server port. */ |
| 104 | grpc_tcp_server_cb on_accept_cb; |
| 105 | void *on_accept_cb_arg; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 106 | |
| 107 | gpr_mu mu; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 108 | |
| 109 | /* active port count: how many ports are actually still listening */ |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 110 | size_t active_ports; |
| 111 | /* destroyed port count: how many ports are completely destroyed */ |
| 112 | size_t destroyed_ports; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 113 | |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 114 | /* is this server shutting down? */ |
| 115 | bool shutdown; |
| 116 | /* use SO_REUSEPORT */ |
| 117 | bool so_reuseport; |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 118 | |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 119 | /* linked list of server ports */ |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 120 | grpc_tcp_listener *head; |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 121 | grpc_tcp_listener *tail; |
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 | |
Dan Born | 9c12bc2 | 2016-01-13 16:52:20 -0800 | [diff] [blame] | 124 | /* List of closures passed to shutdown_starting_add(). */ |
| 125 | grpc_closure_list shutdown_starting; |
| 126 | |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 127 | /* shutdown callback */ |
Craig Tiller | d1bec03 | 2015-09-18 17:29:00 -0700 | [diff] [blame] | 128 | grpc_closure *shutdown_complete; |
Craig Tiller | 0189ac0 | 2015-05-11 14:59:19 -0700 | [diff] [blame] | 129 | |
Craig Tiller | 6174b9a | 2015-06-18 08:13:05 -0700 | [diff] [blame] | 130 | /* all pollsets interested in new connections */ |
Craig Tiller | 0189ac0 | 2015-05-11 14:59:19 -0700 | [diff] [blame] | 131 | grpc_pollset **pollsets; |
Craig Tiller | 6174b9a | 2015-06-18 08:13:05 -0700 | [diff] [blame] | 132 | /* number of pollsets in the pollsets array */ |
Craig Tiller | 0189ac0 | 2015-05-11 14:59:19 -0700 | [diff] [blame] | 133 | size_t pollset_count; |
Craig Tiller | 53dd6b9 | 2016-05-24 13:49:50 -0700 | [diff] [blame] | 134 | |
| 135 | /* next pollset to assign a channel to */ |
Craig Tiller | b76471d | 2016-07-01 10:24:56 -0700 | [diff] [blame] | 136 | gpr_atm next_pollset_to_assign; |
Craig Tiller | e34c285 | 2016-09-23 09:43:32 -0700 | [diff] [blame] | 137 | |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 138 | grpc_resource_quota *resource_quota; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 139 | }; |
| 140 | |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 141 | static gpr_once check_init = GPR_ONCE_INIT; |
Nicolas "Pixel" Noble | baa35fc | 2016-08-19 02:20:11 +0200 | [diff] [blame] | 142 | static bool has_so_reuseport = false; |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 143 | |
| 144 | static void init(void) { |
Nicolas "Pixel" Noble | baa35fc | 2016-08-19 02:20:11 +0200 | [diff] [blame] | 145 | #ifndef GPR_MANYLINUX1 |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 146 | int s = socket(AF_INET, SOCK_STREAM, 0); |
| 147 | if (s >= 0) { |
| 148 | has_so_reuseport = GRPC_LOG_IF_ERROR("check for SO_REUSEPORT", |
| 149 | grpc_set_socket_reuse_port(s, 1)); |
| 150 | close(s); |
| 151 | } |
Nicolas "Pixel" Noble | baa35fc | 2016-08-19 02:20:11 +0200 | [diff] [blame] | 152 | #endif |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 153 | } |
| 154 | |
Craig Tiller | e34c285 | 2016-09-23 09:43:32 -0700 | [diff] [blame] | 155 | grpc_error *grpc_tcp_server_create(grpc_exec_ctx *exec_ctx, |
| 156 | grpc_closure *shutdown_complete, |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 157 | const grpc_channel_args *args, |
Craig Tiller | 0b5857f | 2016-05-04 10:58:06 -0700 | [diff] [blame] | 158 | grpc_tcp_server **server) { |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 159 | gpr_once_init(&check_init, init); |
| 160 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 161 | grpc_tcp_server *s = gpr_malloc(sizeof(grpc_tcp_server)); |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 162 | s->so_reuseport = has_so_reuseport; |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 163 | s->resource_quota = grpc_resource_quota_create(NULL); |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 164 | for (size_t i = 0; i < (args == NULL ? 0 : args->num_args); i++) { |
| 165 | if (0 == strcmp(GRPC_ARG_ALLOW_REUSEPORT, args->args[i].key)) { |
| 166 | if (args->args[i].type == GRPC_ARG_INTEGER) { |
| 167 | s->so_reuseport = |
| 168 | has_so_reuseport && (args->args[i].value.integer != 0); |
| 169 | } else { |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 170 | grpc_resource_quota_unref_internal(exec_ctx, s->resource_quota); |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 171 | gpr_free(s); |
| 172 | return GRPC_ERROR_CREATE(GRPC_ARG_ALLOW_REUSEPORT |
| 173 | " must be an integer"); |
| 174 | } |
Craig Tiller | 153eaa7 | 2016-10-21 13:52:36 -0700 | [diff] [blame] | 175 | } else if (0 == strcmp(GRPC_ARG_RESOURCE_QUOTA, args->args[i].key)) { |
Craig Tiller | e34c285 | 2016-09-23 09:43:32 -0700 | [diff] [blame] | 176 | if (args->args[i].type == GRPC_ARG_POINTER) { |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 177 | grpc_resource_quota_unref_internal(exec_ctx, s->resource_quota); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 178 | s->resource_quota = |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 179 | grpc_resource_quota_ref_internal(args->args[i].value.pointer.p); |
Craig Tiller | e34c285 | 2016-09-23 09:43:32 -0700 | [diff] [blame] | 180 | } else { |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 181 | grpc_resource_quota_unref_internal(exec_ctx, s->resource_quota); |
Craig Tiller | e34c285 | 2016-09-23 09:43:32 -0700 | [diff] [blame] | 182 | gpr_free(s); |
Craig Tiller | 153eaa7 | 2016-10-21 13:52:36 -0700 | [diff] [blame] | 183 | return GRPC_ERROR_CREATE(GRPC_ARG_RESOURCE_QUOTA |
Craig Tiller | e34c285 | 2016-09-23 09:43:32 -0700 | [diff] [blame] | 184 | " must be a pointer to a buffer pool"); |
| 185 | } |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 186 | } |
| 187 | } |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 188 | gpr_ref_init(&s->refs, 1); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 189 | gpr_mu_init(&s->mu); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 190 | s->active_ports = 0; |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 191 | s->destroyed_ports = 0; |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 192 | s->shutdown = false; |
Dan Born | 9c12bc2 | 2016-01-13 16:52:20 -0800 | [diff] [blame] | 193 | s->shutdown_starting.head = NULL; |
| 194 | s->shutdown_starting.tail = NULL; |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 195 | s->shutdown_complete = shutdown_complete; |
Robbie Shade | 3cd2d18 | 2015-08-28 14:30:35 -0400 | [diff] [blame] | 196 | s->on_accept_cb = NULL; |
| 197 | s->on_accept_cb_arg = NULL; |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 198 | s->head = NULL; |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 199 | s->tail = NULL; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 200 | s->nports = 0; |
Craig Tiller | b76471d | 2016-07-01 10:24:56 -0700 | [diff] [blame] | 201 | gpr_atm_no_barrier_store(&s->next_pollset_to_assign, 0); |
Craig Tiller | 0b5857f | 2016-05-04 10:58:06 -0700 | [diff] [blame] | 202 | *server = s; |
| 203 | return GRPC_ERROR_NONE; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 204 | } |
| 205 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 206 | static void finish_shutdown(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s) { |
Dan Born | 930c298 | 2016-09-08 19:12:18 -0700 | [diff] [blame] | 207 | gpr_mu_lock(&s->mu); |
| 208 | GPR_ASSERT(s->shutdown); |
| 209 | gpr_mu_unlock(&s->mu); |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 210 | if (s->shutdown_complete != NULL) { |
Craig Tiller | 91031da | 2016-12-28 15:44:25 -0800 | [diff] [blame] | 211 | grpc_closure_sched(exec_ctx, s->shutdown_complete, GRPC_ERROR_NONE); |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 212 | } |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 213 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 214 | gpr_mu_destroy(&s->mu); |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 215 | |
Nicolas "Pixel" Noble | c6a7c6e | 2015-11-19 21:55:44 +0100 | [diff] [blame] | 216 | while (s->head) { |
| 217 | grpc_tcp_listener *sp = s->head; |
| 218 | s->head = sp->next; |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 219 | gpr_free(sp); |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 220 | } |
| 221 | |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 222 | grpc_resource_quota_unref_internal(exec_ctx, s->resource_quota); |
Craig Tiller | e34c285 | 2016-09-23 09:43:32 -0700 | [diff] [blame] | 223 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 224 | gpr_free(s); |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 225 | } |
| 226 | |
Craig Tiller | 6c39686 | 2016-01-28 13:53:40 -0800 | [diff] [blame] | 227 | static void destroyed_port(grpc_exec_ctx *exec_ctx, void *server, |
Craig Tiller | c027e77 | 2016-05-03 16:27:00 -0700 | [diff] [blame] | 228 | grpc_error *error) { |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 229 | grpc_tcp_server *s = server; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 230 | gpr_mu_lock(&s->mu); |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 231 | s->destroyed_ports++; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 232 | if (s->destroyed_ports == s->nports) { |
| 233 | gpr_mu_unlock(&s->mu); |
| 234 | finish_shutdown(exec_ctx, s); |
| 235 | } else { |
| 236 | GPR_ASSERT(s->destroyed_ports < s->nports); |
| 237 | gpr_mu_unlock(&s->mu); |
| 238 | } |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 239 | } |
| 240 | |
Craig Tiller | 6174b9a | 2015-06-18 08:13:05 -0700 | [diff] [blame] | 241 | /* called when all listening endpoints have been shutdown, so no further |
| 242 | events will be received on them - at this point it's safe to destroy |
| 243 | things */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 244 | 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] | 245 | /* delete ALL the things */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 246 | gpr_mu_lock(&s->mu); |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 247 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 248 | if (!s->shutdown) { |
| 249 | gpr_mu_unlock(&s->mu); |
| 250 | return; |
| 251 | } |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame] | 252 | |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 253 | if (s->head) { |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 254 | grpc_tcp_listener *sp; |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 255 | for (sp = s->head; sp; sp = sp->next) { |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 256 | grpc_unlink_if_unix_domain_socket(&sp->addr); |
Craig Tiller | 3cb3447 | 2016-12-28 16:11:38 -0800 | [diff] [blame] | 257 | grpc_closure_init(&sp->destroyed_closure, destroyed_port, s, |
| 258 | grpc_schedule_on_exec_ctx); |
yang-g | 5d85037 | 2015-12-01 10:32:28 -0800 | [diff] [blame] | 259 | grpc_fd_orphan(exec_ctx, sp->emfd, &sp->destroyed_closure, NULL, |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 260 | "tcp_listener_shutdown"); |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame] | 261 | } |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 262 | gpr_mu_unlock(&s->mu); |
| 263 | } else { |
| 264 | gpr_mu_unlock(&s->mu); |
| 265 | finish_shutdown(exec_ctx, s); |
| 266 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 267 | } |
| 268 | |
Dan Born | 5d81d15 | 2016-01-12 20:29:29 -0800 | [diff] [blame] | 269 | static void tcp_server_destroy(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s) { |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 270 | gpr_mu_lock(&s->mu); |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 271 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 272 | GPR_ASSERT(!s->shutdown); |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 273 | s->shutdown = true; |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 274 | |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 275 | /* shutdown all fd's */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 276 | if (s->active_ports) { |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 277 | grpc_tcp_listener *sp; |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 278 | for (sp = s->head; sp; sp = sp->next) { |
Craig Tiller | cda759d | 2017-01-27 11:37:37 -0800 | [diff] [blame^] | 279 | grpc_fd_shutdown(exec_ctx, sp->emfd, |
| 280 | GRPC_ERROR_CREATE("Server destroyed")); |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 281 | } |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 282 | gpr_mu_unlock(&s->mu); |
| 283 | } else { |
| 284 | gpr_mu_unlock(&s->mu); |
| 285 | deactivated_all_ports(exec_ctx, s); |
| 286 | } |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 287 | } |
| 288 | |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 289 | /* get max listen queue size on linux */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 290 | static void init_max_accept_queue_size(void) { |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 291 | int n = SOMAXCONN; |
| 292 | char buf[64]; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 293 | FILE *fp = fopen("/proc/sys/net/core/somaxconn", "r"); |
| 294 | if (fp == NULL) { |
| 295 | /* 2.4 kernel. */ |
| 296 | s_max_accept_queue_size = SOMAXCONN; |
| 297 | return; |
| 298 | } |
| 299 | if (fgets(buf, sizeof buf, fp)) { |
| 300 | char *end; |
| 301 | long i = strtol(buf, &end, 10); |
| 302 | if (i > 0 && i <= INT_MAX && end && *end == 0) { |
| 303 | n = (int)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 | } |
| 306 | fclose(fp); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 307 | s_max_accept_queue_size = n; |
| 308 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 309 | if (s_max_accept_queue_size < MIN_SAFE_ACCEPT_QUEUE_SIZE) { |
| 310 | gpr_log(GPR_INFO, |
| 311 | "Suspiciously small accept queue (%d) will probably lead to " |
| 312 | "connection drops", |
| 313 | s_max_accept_queue_size); |
| 314 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 315 | } |
| 316 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 317 | static int get_max_accept_queue_size(void) { |
| 318 | 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] | 319 | return s_max_accept_queue_size; |
| 320 | } |
| 321 | |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 322 | /* Prepare a recently-created socket for listening. */ |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 323 | static grpc_error *prepare_socket(int fd, const grpc_resolved_address *addr, |
| 324 | bool so_reuseport, int *port) { |
| 325 | grpc_resolved_address sockname_temp; |
Craig Tiller | 80384bd | 2016-05-06 16:12:31 -0700 | [diff] [blame] | 326 | grpc_error *err = GRPC_ERROR_NONE; |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 327 | |
Craig Tiller | 80384bd | 2016-05-06 16:12:31 -0700 | [diff] [blame] | 328 | GPR_ASSERT(fd >= 0); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 329 | |
Yuchen Zeng | 2414bbb | 2016-08-08 21:22:54 -0700 | [diff] [blame] | 330 | if (so_reuseport && !grpc_is_unix_socket(addr)) { |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 331 | err = grpc_set_socket_reuse_port(fd, 1); |
| 332 | if (err != GRPC_ERROR_NONE) goto error; |
| 333 | } |
| 334 | |
Craig Tiller | 80384bd | 2016-05-06 16:12:31 -0700 | [diff] [blame] | 335 | err = grpc_set_socket_nonblocking(fd, 1); |
| 336 | if (err != GRPC_ERROR_NONE) goto error; |
| 337 | err = grpc_set_socket_cloexec(fd, 1); |
| 338 | if (err != GRPC_ERROR_NONE) goto error; |
| 339 | if (!grpc_is_unix_socket(addr)) { |
| 340 | err = grpc_set_socket_low_latency(fd, 1); |
| 341 | if (err != GRPC_ERROR_NONE) goto error; |
| 342 | err = grpc_set_socket_reuse_addr(fd, 1); |
| 343 | if (err != GRPC_ERROR_NONE) goto error; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 344 | } |
Craig Tiller | 80384bd | 2016-05-06 16:12:31 -0700 | [diff] [blame] | 345 | err = grpc_set_socket_no_sigpipe_if_possible(fd); |
| 346 | if (err != GRPC_ERROR_NONE) goto error; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 347 | |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 348 | GPR_ASSERT(addr->len < ~(socklen_t)0); |
| 349 | if (bind(fd, (struct sockaddr *)addr->addr, (socklen_t)addr->len) < 0) { |
David Garcia Quintas | 03291c4 | 2016-05-10 18:28:56 -0700 | [diff] [blame] | 350 | err = GRPC_OS_ERROR(errno, "bind"); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 351 | goto error; |
| 352 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 353 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 354 | if (listen(fd, get_max_accept_queue_size()) < 0) { |
Craig Tiller | 80384bd | 2016-05-06 16:12:31 -0700 | [diff] [blame] | 355 | err = GRPC_OS_ERROR(errno, "listen"); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 356 | goto error; |
| 357 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 358 | |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 359 | sockname_temp.len = sizeof(struct sockaddr_storage); |
| 360 | |
murgatroid99 | dedb923 | 2016-09-26 13:54:04 -0700 | [diff] [blame] | 361 | if (getsockname(fd, (struct sockaddr *)sockname_temp.addr, |
| 362 | (socklen_t *)&sockname_temp.len) < 0) { |
Craig Tiller | 80384bd | 2016-05-06 16:12:31 -0700 | [diff] [blame] | 363 | err = GRPC_OS_ERROR(errno, "getsockname"); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 364 | goto error; |
| 365 | } |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 366 | |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 367 | *port = grpc_sockaddr_get_port(&sockname_temp); |
Craig Tiller | 80384bd | 2016-05-06 16:12:31 -0700 | [diff] [blame] | 368 | return GRPC_ERROR_NONE; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 369 | |
| 370 | error: |
Craig Tiller | 94f8453 | 2016-05-06 21:03:29 -0700 | [diff] [blame] | 371 | GPR_ASSERT(err != GRPC_ERROR_NONE); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 372 | if (fd >= 0) { |
| 373 | close(fd); |
| 374 | } |
David Garcia Quintas | 32ec133 | 2016-05-11 12:22:53 -0700 | [diff] [blame] | 375 | grpc_error *ret = grpc_error_set_int( |
Craig Tiller | 80384bd | 2016-05-06 16:12:31 -0700 | [diff] [blame] | 376 | GRPC_ERROR_CREATE_REFERENCING("Unable to configure socket", &err, 1), |
| 377 | GRPC_ERROR_INT_FD, fd); |
David Garcia Quintas | 32ec133 | 2016-05-11 12:22:53 -0700 | [diff] [blame] | 378 | GRPC_ERROR_UNREF(err); |
| 379 | return ret; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 380 | } |
| 381 | |
| 382 | /* event manager callback when reads are ready */ |
Craig Tiller | c027e77 | 2016-05-03 16:27:00 -0700 | [diff] [blame] | 383 | static void on_read(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *err) { |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 384 | grpc_tcp_listener *sp = arg; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 385 | |
Craig Tiller | c027e77 | 2016-05-03 16:27:00 -0700 | [diff] [blame] | 386 | if (err != GRPC_ERROR_NONE) { |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 387 | goto error; |
| 388 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 389 | |
Mark D. Roth | eed3815 | 2016-12-08 13:59:13 -0800 | [diff] [blame] | 390 | grpc_pollset *read_notifier_pollset = |
Craig Tiller | b76471d | 2016-07-01 10:24:56 -0700 | [diff] [blame] | 391 | sp->server->pollsets[(size_t)gpr_atm_no_barrier_fetch_add( |
| 392 | &sp->server->next_pollset_to_assign, 1) % |
Craig Tiller | 53dd6b9 | 2016-05-24 13:49:50 -0700 | [diff] [blame] | 393 | sp->server->pollset_count]; |
Sree Kuchibhotla | 42b004a | 2016-04-08 14:41:49 -0700 | [diff] [blame] | 394 | |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 395 | /* loop until accept4 returns EAGAIN, and then re-arm notification */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 396 | for (;;) { |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 397 | grpc_resolved_address addr; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 398 | char *addr_str; |
| 399 | char *name; |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 400 | addr.len = sizeof(struct sockaddr_storage); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 401 | /* Note: If we ever decide to return this address to the user, remember to |
| 402 | strip off the ::ffff:0.0.0.0/96 prefix first. */ |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 403 | int fd = grpc_accept4(sp->fd, &addr, 1, 1); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 404 | if (fd < 0) { |
| 405 | switch (errno) { |
| 406 | case EINTR: |
| 407 | continue; |
| 408 | case EAGAIN: |
| 409 | grpc_fd_notify_on_read(exec_ctx, sp->emfd, &sp->read_closure); |
| 410 | return; |
| 411 | default: |
| 412 | gpr_log(GPR_ERROR, "Failed accept4: %s", strerror(errno)); |
| 413 | goto error; |
| 414 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 415 | } |
| 416 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 417 | grpc_set_socket_no_sigpipe_if_possible(fd); |
| 418 | |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 419 | addr_str = grpc_sockaddr_to_uri(&addr); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 420 | gpr_asprintf(&name, "tcp-server-connection:%s", addr_str); |
| 421 | |
| 422 | if (grpc_tcp_trace) { |
| 423 | gpr_log(GPR_DEBUG, "SERVER_CONNECT: incoming connection: %s", addr_str); |
| 424 | } |
| 425 | |
Mark D. Roth | eed3815 | 2016-12-08 13:59:13 -0800 | [diff] [blame] | 426 | grpc_fd *fdobj = grpc_fd_create(fd, name); |
Sree Kuchibhotla | 42b004a | 2016-04-08 14:41:49 -0700 | [diff] [blame] | 427 | |
| 428 | if (read_notifier_pollset == NULL) { |
Sree Kuchibhotla | 42b004a | 2016-04-08 14:41:49 -0700 | [diff] [blame] | 429 | gpr_log(GPR_ERROR, "Read notifier pollset is not set on the fd"); |
| 430 | goto error; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 431 | } |
Sree Kuchibhotla | 42b004a | 2016-04-08 14:41:49 -0700 | [diff] [blame] | 432 | |
Sree Kuchibhotla | 42b004a | 2016-04-08 14:41:49 -0700 | [diff] [blame] | 433 | grpc_pollset_add_fd(exec_ctx, read_notifier_pollset, fdobj); |
| 434 | |
Mark D. Roth | 6c07bf8 | 2016-12-09 08:38:38 -0800 | [diff] [blame] | 435 | // Create acceptor. |
| 436 | grpc_tcp_server_acceptor *acceptor = gpr_malloc(sizeof(*acceptor)); |
| 437 | acceptor->from_server = sp->server; |
| 438 | acceptor->port_index = sp->port_index; |
| 439 | acceptor->fd_index = sp->fd_index; |
| 440 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 441 | sp->server->on_accept_cb( |
| 442 | exec_ctx, sp->server->on_accept_cb_arg, |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 443 | grpc_tcp_create(fdobj, sp->server->resource_quota, |
Craig Tiller | e34c285 | 2016-09-23 09:43:32 -0700 | [diff] [blame] | 444 | GRPC_TCP_DEFAULT_READ_SLICE_SIZE, addr_str), |
Mark D. Roth | eed3815 | 2016-12-08 13:59:13 -0800 | [diff] [blame] | 445 | read_notifier_pollset, acceptor); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 446 | |
| 447 | gpr_free(name); |
| 448 | gpr_free(addr_str); |
| 449 | } |
| 450 | |
yang-g | b063c87 | 2015-10-07 11:40:13 -0700 | [diff] [blame] | 451 | GPR_UNREACHABLE_CODE(return ); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 452 | |
| 453 | error: |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 454 | gpr_mu_lock(&sp->server->mu); |
| 455 | if (0 == --sp->server->active_ports) { |
| 456 | gpr_mu_unlock(&sp->server->mu); |
| 457 | deactivated_all_ports(exec_ctx, sp->server); |
| 458 | } else { |
| 459 | gpr_mu_unlock(&sp->server->mu); |
| 460 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 461 | } |
| 462 | |
Craig Tiller | 80384bd | 2016-05-06 16:12:31 -0700 | [diff] [blame] | 463 | static grpc_error *add_socket_to_server(grpc_tcp_server *s, int fd, |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 464 | const grpc_resolved_address *addr, |
murgatroid99 | dedb923 | 2016-09-26 13:54:04 -0700 | [diff] [blame] | 465 | unsigned port_index, unsigned fd_index, |
Craig Tiller | 80384bd | 2016-05-06 16:12:31 -0700 | [diff] [blame] | 466 | grpc_tcp_listener **listener) { |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 467 | grpc_tcp_listener *sp = NULL; |
Craig Tiller | 9147296 | 2016-05-09 11:01:15 -0700 | [diff] [blame] | 468 | int port = -1; |
Craig Tiller | fa275a9 | 2015-06-01 13:55:54 -0700 | [diff] [blame] | 469 | char *addr_str; |
| 470 | char *name; |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 471 | |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 472 | grpc_error *err = prepare_socket(fd, addr, s->so_reuseport, &port); |
Craig Tiller | 80384bd | 2016-05-06 16:12:31 -0700 | [diff] [blame] | 473 | if (err == GRPC_ERROR_NONE) { |
Craig Tiller | 9147296 | 2016-05-09 11:01:15 -0700 | [diff] [blame] | 474 | GPR_ASSERT(port > 0); |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 475 | grpc_sockaddr_to_string(&addr_str, addr, 1); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 476 | gpr_asprintf(&name, "tcp-server-listener:%s", addr_str); |
| 477 | gpr_mu_lock(&s->mu); |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 478 | s->nports++; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 479 | GPR_ASSERT(!s->on_accept_cb && "must add ports before starting server"); |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 480 | sp = gpr_malloc(sizeof(grpc_tcp_listener)); |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 481 | sp->next = NULL; |
| 482 | if (s->head == NULL) { |
| 483 | s->head = sp; |
| 484 | } else { |
| 485 | s->tail->next = sp; |
| 486 | } |
| 487 | s->tail = sp; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 488 | sp->server = s; |
| 489 | sp->fd = fd; |
| 490 | sp->emfd = grpc_fd_create(fd, name); |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 491 | memcpy(&sp->addr, addr, sizeof(grpc_resolved_address)); |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 492 | sp->port = port; |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 493 | sp->port_index = port_index; |
| 494 | sp->fd_index = fd_index; |
Nicolas "Pixel" Noble | d86115e | 2015-11-20 05:56:25 +0100 | [diff] [blame] | 495 | sp->is_sibling = 0; |
| 496 | sp->sibling = NULL; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 497 | GPR_ASSERT(sp->emfd); |
| 498 | gpr_mu_unlock(&s->mu); |
| 499 | gpr_free(addr_str); |
| 500 | gpr_free(name); |
| 501 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 502 | |
Craig Tiller | 80384bd | 2016-05-06 16:12:31 -0700 | [diff] [blame] | 503 | *listener = sp; |
| 504 | return err; |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 505 | } |
| 506 | |
Dan Born | ad1f31f | 2016-07-08 13:24:49 -0700 | [diff] [blame] | 507 | /* Insert count new listeners after listener. Every new listener will have the |
| 508 | same listen address as listener (SO_REUSEPORT must be enabled). Every new |
| 509 | listener is a sibling of listener. */ |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 510 | static grpc_error *clone_port(grpc_tcp_listener *listener, unsigned count) { |
| 511 | grpc_tcp_listener *sp = NULL; |
| 512 | char *addr_str; |
| 513 | char *name; |
| 514 | grpc_error *err; |
| 515 | |
| 516 | for (grpc_tcp_listener *l = listener->next; l && l->is_sibling; l = l->next) { |
| 517 | l->fd_index += count; |
| 518 | } |
| 519 | |
| 520 | for (unsigned i = 0; i < count; i++) { |
Craig Tiller | 136698c | 2016-05-19 11:49:44 -0700 | [diff] [blame] | 521 | int fd = -1; |
| 522 | int port = -1; |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 523 | grpc_dualstack_mode dsmode; |
murgatroid99 | dedb923 | 2016-09-26 13:54:04 -0700 | [diff] [blame] | 524 | err = grpc_create_dualstack_socket(&listener->addr, SOCK_STREAM, 0, &dsmode, |
| 525 | &fd); |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 526 | if (err != GRPC_ERROR_NONE) return err; |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 527 | err = prepare_socket(fd, &listener->addr, true, &port); |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 528 | if (err != GRPC_ERROR_NONE) return err; |
Craig Tiller | 644da98 | 2016-05-19 09:19:28 -0700 | [diff] [blame] | 529 | listener->server->nports++; |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 530 | grpc_sockaddr_to_string(&addr_str, &listener->addr, 1); |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 531 | gpr_asprintf(&name, "tcp-server-listener:%s/clone-%d", addr_str, i); |
| 532 | sp = gpr_malloc(sizeof(grpc_tcp_listener)); |
| 533 | sp->next = listener->next; |
| 534 | listener->next = sp; |
Dan Born | ad1f31f | 2016-07-08 13:24:49 -0700 | [diff] [blame] | 535 | /* sp (the new listener) is a sibling of 'listener' (the original |
| 536 | listener). */ |
| 537 | sp->is_sibling = 1; |
| 538 | sp->sibling = listener->sibling; |
| 539 | listener->sibling = sp; |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 540 | sp->server = listener->server; |
| 541 | sp->fd = fd; |
| 542 | sp->emfd = grpc_fd_create(fd, name); |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 543 | memcpy(&sp->addr, &listener->addr, sizeof(grpc_resolved_address)); |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 544 | sp->port = port; |
| 545 | sp->port_index = listener->port_index; |
| 546 | sp->fd_index = listener->fd_index + count - i; |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 547 | GPR_ASSERT(sp->emfd); |
| 548 | while (listener->server->tail->next != NULL) { |
| 549 | listener->server->tail = listener->server->tail->next; |
| 550 | } |
| 551 | gpr_free(addr_str); |
| 552 | gpr_free(name); |
| 553 | } |
| 554 | |
| 555 | return GRPC_ERROR_NONE; |
| 556 | } |
| 557 | |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 558 | grpc_error *grpc_tcp_server_add_port(grpc_tcp_server *s, |
| 559 | const grpc_resolved_address *addr, |
| 560 | int *out_port) { |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 561 | grpc_tcp_listener *sp; |
| 562 | grpc_tcp_listener *sp2 = NULL; |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 563 | int fd; |
| 564 | grpc_dualstack_mode dsmode; |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 565 | grpc_resolved_address addr6_v4mapped; |
| 566 | grpc_resolved_address wild4; |
| 567 | grpc_resolved_address wild6; |
| 568 | grpc_resolved_address addr4_copy; |
| 569 | grpc_resolved_address *allocated_addr = NULL; |
| 570 | grpc_resolved_address sockname_temp; |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 571 | int port; |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 572 | unsigned port_index = 0; |
| 573 | unsigned fd_index = 0; |
Craig Tiller | c027e77 | 2016-05-03 16:27:00 -0700 | [diff] [blame] | 574 | grpc_error *errs[2] = {GRPC_ERROR_NONE, GRPC_ERROR_NONE}; |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 575 | if (s->tail != NULL) { |
| 576 | port_index = s->tail->port_index + 1; |
| 577 | } |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 578 | grpc_unlink_if_unix_domain_socket(addr); |
Craig Tiller | aa31da4 | 2015-02-17 16:33:35 -0800 | [diff] [blame] | 579 | |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 580 | /* Check if this is a wildcard port, and if so, try to keep the port the same |
| 581 | as some previously created listener. */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 582 | if (grpc_sockaddr_get_port(addr) == 0) { |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 583 | for (sp = s->head; sp; sp = sp->next) { |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 584 | sockname_temp.len = sizeof(struct sockaddr_storage); |
| 585 | if (0 == getsockname(sp->fd, (struct sockaddr *)sockname_temp.addr, |
| 586 | (socklen_t *)&sockname_temp.len)) { |
| 587 | port = grpc_sockaddr_get_port(&sockname_temp); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 588 | if (port > 0) { |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 589 | allocated_addr = gpr_malloc(sizeof(grpc_resolved_address)); |
| 590 | memcpy(allocated_addr, addr, addr->len); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 591 | grpc_sockaddr_set_port(allocated_addr, port); |
| 592 | addr = allocated_addr; |
| 593 | break; |
| 594 | } |
| 595 | } |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 596 | } |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 597 | } |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 598 | |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 599 | sp = NULL; |
| 600 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 601 | if (grpc_sockaddr_to_v4mapped(addr, &addr6_v4mapped)) { |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 602 | addr = &addr6_v4mapped; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 603 | } |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 604 | |
| 605 | /* Treat :: or 0.0.0.0 as a family-agnostic wildcard. */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 606 | if (grpc_sockaddr_is_wildcard(addr, &port)) { |
| 607 | grpc_sockaddr_make_wildcards(port, &wild4, &wild6); |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 608 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 609 | /* Try listening on IPv6 first. */ |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 610 | addr = &wild6; |
Craig Tiller | c027e77 | 2016-05-03 16:27:00 -0700 | [diff] [blame] | 611 | errs[0] = grpc_create_dualstack_socket(addr, SOCK_STREAM, 0, &dsmode, &fd); |
| 612 | if (errs[0] == GRPC_ERROR_NONE) { |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 613 | errs[0] = add_socket_to_server(s, fd, addr, port_index, fd_index, &sp); |
Craig Tiller | c027e77 | 2016-05-03 16:27:00 -0700 | [diff] [blame] | 614 | if (fd >= 0 && dsmode == GRPC_DSMODE_DUALSTACK) { |
| 615 | goto done; |
| 616 | } |
| 617 | if (sp != NULL) { |
| 618 | ++fd_index; |
| 619 | } |
| 620 | /* If we didn't get a dualstack socket, also listen on 0.0.0.0. */ |
| 621 | if (port == 0 && sp != NULL) { |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 622 | grpc_sockaddr_set_port(&wild4, sp->port); |
Craig Tiller | c027e77 | 2016-05-03 16:27:00 -0700 | [diff] [blame] | 623 | } |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 624 | } |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 625 | addr = &wild4; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 626 | } |
| 627 | |
Craig Tiller | c027e77 | 2016-05-03 16:27:00 -0700 | [diff] [blame] | 628 | errs[1] = grpc_create_dualstack_socket(addr, SOCK_STREAM, 0, &dsmode, &fd); |
| 629 | if (errs[1] == GRPC_ERROR_NONE) { |
yang-g | 6346041 | 2016-03-22 14:58:15 -0700 | [diff] [blame] | 630 | if (dsmode == GRPC_DSMODE_IPV4 && |
| 631 | grpc_sockaddr_is_v4mapped(addr, &addr4_copy)) { |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 632 | addr = &addr4_copy; |
yang-g | 6346041 | 2016-03-22 14:58:15 -0700 | [diff] [blame] | 633 | } |
yang-g | b7921c7 | 2016-03-23 10:16:45 -0700 | [diff] [blame] | 634 | sp2 = sp; |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 635 | errs[1] = add_socket_to_server(s, fd, addr, port_index, fd_index, &sp); |
yang-g | 6346041 | 2016-03-22 14:58:15 -0700 | [diff] [blame] | 636 | if (sp2 != NULL && sp != NULL) { |
| 637 | sp2->sibling = sp; |
| 638 | sp->is_sibling = 1; |
| 639 | } |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 640 | } |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 641 | |
| 642 | done: |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 643 | gpr_free(allocated_addr); |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 644 | if (sp != NULL) { |
Craig Tiller | c027e77 | 2016-05-03 16:27:00 -0700 | [diff] [blame] | 645 | *out_port = sp->port; |
Craig Tiller | f707d62 | 2016-05-06 14:26:12 -0700 | [diff] [blame] | 646 | GRPC_ERROR_UNREF(errs[0]); |
| 647 | GRPC_ERROR_UNREF(errs[1]); |
Craig Tiller | c027e77 | 2016-05-03 16:27:00 -0700 | [diff] [blame] | 648 | return GRPC_ERROR_NONE; |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 649 | } else { |
Craig Tiller | c027e77 | 2016-05-03 16:27:00 -0700 | [diff] [blame] | 650 | *out_port = -1; |
| 651 | char *addr_str = grpc_sockaddr_to_uri(addr); |
| 652 | grpc_error *err = grpc_error_set_str( |
| 653 | GRPC_ERROR_CREATE_REFERENCING("Failed to add port to server", errs, |
| 654 | GPR_ARRAY_SIZE(errs)), |
| 655 | GRPC_ERROR_STR_TARGET_ADDRESS, addr_str); |
David Garcia Quintas | 32ec133 | 2016-05-11 12:22:53 -0700 | [diff] [blame] | 656 | GRPC_ERROR_UNREF(errs[0]); |
| 657 | GRPC_ERROR_UNREF(errs[1]); |
Craig Tiller | c027e77 | 2016-05-03 16:27:00 -0700 | [diff] [blame] | 658 | gpr_free(addr_str); |
| 659 | return err; |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 660 | } |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 661 | } |
| 662 | |
Dan Born | 19e01fd | 2016-10-18 11:49:45 -0700 | [diff] [blame] | 663 | /* Return listener at port_index or NULL. Should only be called with s->mu |
| 664 | locked. */ |
Dan Born | 4e826be | 2016-10-03 20:33:25 -0700 | [diff] [blame] | 665 | static grpc_tcp_listener *get_port_index(grpc_tcp_server *s, |
| 666 | unsigned port_index) { |
| 667 | unsigned num_ports = 0; |
| 668 | grpc_tcp_listener *sp; |
| 669 | for (sp = s->head; sp; sp = sp->next) { |
| 670 | if (!sp->is_sibling) { |
| 671 | if (++num_ports > port_index) { |
| 672 | return sp; |
| 673 | } |
| 674 | } |
| 675 | } |
| 676 | return NULL; |
| 677 | } |
| 678 | |
Dan Born | 5d81d15 | 2016-01-12 20:29:29 -0800 | [diff] [blame] | 679 | unsigned grpc_tcp_server_port_fd_count(grpc_tcp_server *s, |
| 680 | unsigned port_index) { |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 681 | unsigned num_fds = 0; |
Dan Born | 930c298 | 2016-09-08 19:12:18 -0700 | [diff] [blame] | 682 | gpr_mu_lock(&s->mu); |
Dan Born | 4e826be | 2016-10-03 20:33:25 -0700 | [diff] [blame] | 683 | grpc_tcp_listener *sp = get_port_index(s, port_index); |
| 684 | for (; sp; sp = sp->sibling) { |
| 685 | ++num_fds; |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 686 | } |
Dan Born | 930c298 | 2016-09-08 19:12:18 -0700 | [diff] [blame] | 687 | gpr_mu_unlock(&s->mu); |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 688 | return num_fds; |
| 689 | } |
| 690 | |
Dan Born | 5d81d15 | 2016-01-12 20:29:29 -0800 | [diff] [blame] | 691 | int grpc_tcp_server_port_fd(grpc_tcp_server *s, unsigned port_index, |
| 692 | unsigned fd_index) { |
Dan Born | 930c298 | 2016-09-08 19:12:18 -0700 | [diff] [blame] | 693 | gpr_mu_lock(&s->mu); |
Dan Born | 4e826be | 2016-10-03 20:33:25 -0700 | [diff] [blame] | 694 | grpc_tcp_listener *sp = get_port_index(s, port_index); |
| 695 | for (; sp; sp = sp->sibling, --fd_index) { |
| 696 | if (fd_index == 0) { |
Dan Born | d9b763b | 2016-10-17 15:00:20 -0700 | [diff] [blame] | 697 | gpr_mu_unlock(&s->mu); |
Dan Born | 4e826be | 2016-10-03 20:33:25 -0700 | [diff] [blame] | 698 | return sp->fd; |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 699 | } |
| 700 | } |
Dan Born | 930c298 | 2016-09-08 19:12:18 -0700 | [diff] [blame] | 701 | gpr_mu_unlock(&s->mu); |
Dan Born | 4e826be | 2016-10-03 20:33:25 -0700 | [diff] [blame] | 702 | return -1; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 703 | } |
| 704 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 705 | void grpc_tcp_server_start(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s, |
| 706 | grpc_pollset **pollsets, size_t pollset_count, |
| 707 | grpc_tcp_server_cb on_accept_cb, |
| 708 | void *on_accept_cb_arg) { |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 709 | size_t i; |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 710 | grpc_tcp_listener *sp; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 711 | GPR_ASSERT(on_accept_cb); |
| 712 | gpr_mu_lock(&s->mu); |
| 713 | GPR_ASSERT(!s->on_accept_cb); |
| 714 | GPR_ASSERT(s->active_ports == 0); |
Robbie Shade | 3cd2d18 | 2015-08-28 14:30:35 -0400 | [diff] [blame] | 715 | s->on_accept_cb = on_accept_cb; |
| 716 | s->on_accept_cb_arg = on_accept_cb_arg; |
Craig Tiller | 0189ac0 | 2015-05-11 14:59:19 -0700 | [diff] [blame] | 717 | s->pollsets = pollsets; |
| 718 | s->pollset_count = pollset_count; |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 719 | sp = s->head; |
| 720 | while (sp != NULL) { |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 721 | if (s->so_reuseport && !grpc_is_unix_socket(&sp->addr) && |
Yuchen Zeng | d745a6f | 2016-08-08 20:44:36 -0700 | [diff] [blame] | 722 | pollset_count > 1) { |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 723 | GPR_ASSERT(GRPC_LOG_IF_ERROR( |
| 724 | "clone_port", clone_port(sp, (unsigned)(pollset_count - 1)))); |
| 725 | for (i = 0; i < pollset_count; i++) { |
| 726 | grpc_pollset_add_fd(exec_ctx, pollsets[i], sp->emfd); |
Craig Tiller | 3cb3447 | 2016-12-28 16:11:38 -0800 | [diff] [blame] | 727 | grpc_closure_init(&sp->read_closure, on_read, sp, |
| 728 | grpc_schedule_on_exec_ctx); |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 729 | grpc_fd_notify_on_read(exec_ctx, sp->emfd, &sp->read_closure); |
| 730 | s->active_ports++; |
| 731 | sp = sp->next; |
| 732 | } |
| 733 | } else { |
| 734 | for (i = 0; i < pollset_count; i++) { |
| 735 | grpc_pollset_add_fd(exec_ctx, pollsets[i], sp->emfd); |
| 736 | } |
Craig Tiller | 3cb3447 | 2016-12-28 16:11:38 -0800 | [diff] [blame] | 737 | grpc_closure_init(&sp->read_closure, on_read, sp, |
| 738 | grpc_schedule_on_exec_ctx); |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 739 | grpc_fd_notify_on_read(exec_ctx, sp->emfd, &sp->read_closure); |
| 740 | s->active_ports++; |
| 741 | sp = sp->next; |
ctiller | 58393c2 | 2015-01-07 14:03:30 -0800 | [diff] [blame] | 742 | } |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 743 | } |
| 744 | gpr_mu_unlock(&s->mu); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 745 | } |
Craig Tiller | 0c0b60c | 2015-01-21 15:49:28 -0800 | [diff] [blame] | 746 | |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 747 | grpc_tcp_server *grpc_tcp_server_ref(grpc_tcp_server *s) { |
Dan Born | 930c298 | 2016-09-08 19:12:18 -0700 | [diff] [blame] | 748 | gpr_ref_non_zero(&s->refs); |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 749 | return s; |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 750 | } |
| 751 | |
Dan Born | 9c12bc2 | 2016-01-13 16:52:20 -0800 | [diff] [blame] | 752 | void grpc_tcp_server_shutdown_starting_add(grpc_tcp_server *s, |
| 753 | grpc_closure *shutdown_starting) { |
| 754 | gpr_mu_lock(&s->mu); |
Craig Tiller | c027e77 | 2016-05-03 16:27:00 -0700 | [diff] [blame] | 755 | grpc_closure_list_append(&s->shutdown_starting, shutdown_starting, |
| 756 | GRPC_ERROR_NONE); |
Dan Born | 9c12bc2 | 2016-01-13 16:52:20 -0800 | [diff] [blame] | 757 | gpr_mu_unlock(&s->mu); |
| 758 | } |
| 759 | |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 760 | void grpc_tcp_server_unref(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s) { |
| 761 | if (gpr_unref(&s->refs)) { |
Dan Born | 930c298 | 2016-09-08 19:12:18 -0700 | [diff] [blame] | 762 | grpc_tcp_server_shutdown_listeners(exec_ctx, s); |
Dan Born | 9c12bc2 | 2016-01-13 16:52:20 -0800 | [diff] [blame] | 763 | gpr_mu_lock(&s->mu); |
Craig Tiller | 91031da | 2016-12-28 15:44:25 -0800 | [diff] [blame] | 764 | grpc_closure_list_sched(exec_ctx, &s->shutdown_starting); |
Dan Born | 9c12bc2 | 2016-01-13 16:52:20 -0800 | [diff] [blame] | 765 | gpr_mu_unlock(&s->mu); |
Dan Born | 930c298 | 2016-09-08 19:12:18 -0700 | [diff] [blame] | 766 | tcp_server_destroy(exec_ctx, s); |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 767 | } |
| 768 | } |
| 769 | |
yang-g | 9275d40 | 2016-07-11 16:51:39 -0700 | [diff] [blame] | 770 | void grpc_tcp_server_shutdown_listeners(grpc_exec_ctx *exec_ctx, |
| 771 | grpc_tcp_server *s) { |
| 772 | gpr_mu_lock(&s->mu); |
| 773 | /* shutdown all fd's */ |
| 774 | if (s->active_ports) { |
| 775 | grpc_tcp_listener *sp; |
| 776 | for (sp = s->head; sp; sp = sp->next) { |
Craig Tiller | cda759d | 2017-01-27 11:37:37 -0800 | [diff] [blame^] | 777 | grpc_fd_shutdown(exec_ctx, sp->emfd, |
| 778 | GRPC_ERROR_CREATE("Server shutdown")); |
yang-g | 9275d40 | 2016-07-11 16:51:39 -0700 | [diff] [blame] | 779 | } |
| 780 | } |
| 781 | gpr_mu_unlock(&s->mu); |
| 782 | } |
| 783 | |
Craig Tiller | 190d360 | 2015-02-18 09:23:38 -0800 | [diff] [blame] | 784 | #endif |