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> |
Dan Born | 8886a81 | 2016-07-08 16:06:07 -0700 | [diff] [blame] | 47 | #include <ifaddrs.h> |
Craig Tiller | aa31da4 | 2015-02-17 16:33:35 -0800 | [diff] [blame] | 48 | #include <limits.h> |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 49 | #include <netinet/in.h> |
| 50 | #include <netinet/tcp.h> |
| 51 | #include <stdio.h> |
Craig Tiller | aa31da4 | 2015-02-17 16:33:35 -0800 | [diff] [blame] | 52 | #include <string.h> |
| 53 | #include <sys/socket.h> |
| 54 | #include <sys/stat.h> |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 55 | #include <sys/types.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 | |
Craig Tiller | f40df23 | 2016-03-25 13:38:14 -0700 | [diff] [blame] | 58 | #include <grpc/support/alloc.h> |
| 59 | #include <grpc/support/log.h> |
| 60 | #include <grpc/support/string_util.h> |
| 61 | #include <grpc/support/sync.h> |
| 62 | #include <grpc/support/time.h> |
Craig Tiller | c027e77 | 2016-05-03 16:27:00 -0700 | [diff] [blame] | 63 | #include <grpc/support/useful.h> |
| 64 | |
Craig Tiller | 9533d04 | 2016-03-25 17:11:06 -0700 | [diff] [blame] | 65 | #include "src/core/lib/iomgr/resolve_address.h" |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 66 | #include "src/core/lib/iomgr/sockaddr.h" |
Craig Tiller | 9533d04 | 2016-03-25 17:11:06 -0700 | [diff] [blame] | 67 | #include "src/core/lib/iomgr/sockaddr_utils.h" |
| 68 | #include "src/core/lib/iomgr/socket_utils_posix.h" |
| 69 | #include "src/core/lib/iomgr/tcp_posix.h" |
| 70 | #include "src/core/lib/iomgr/unix_sockets_posix.h" |
| 71 | #include "src/core/lib/support/string.h" |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 72 | |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 73 | #define MIN_SAFE_ACCEPT_QUEUE_SIZE 100 |
| 74 | |
| 75 | static gpr_once s_init_max_accept_queue_size; |
| 76 | static int s_max_accept_queue_size; |
| 77 | |
| 78 | /* one listening port */ |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 79 | typedef struct grpc_tcp_listener grpc_tcp_listener; |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 80 | struct grpc_tcp_listener { |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 81 | int fd; |
ctiller | 18b49ab | 2014-12-09 14:39:16 -0800 | [diff] [blame] | 82 | grpc_fd *emfd; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 83 | grpc_tcp_server *server; |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 84 | grpc_resolved_address addr; |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 85 | int port; |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 86 | unsigned port_index; |
| 87 | unsigned fd_index; |
Craig Tiller | 3382511 | 2015-09-18 07:44:19 -0700 | [diff] [blame] | 88 | grpc_closure read_closure; |
| 89 | grpc_closure destroyed_closure; |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 90 | struct grpc_tcp_listener *next; |
Dan Born | ad1f31f | 2016-07-08 13:24:49 -0700 | [diff] [blame] | 91 | /* sibling is a linked list of all listeners for a given port. add_port and |
| 92 | clone_port place all new listeners in the same sibling list. A member of |
| 93 | the 'sibling' list is also a member of the 'next' list. The head of each |
| 94 | sibling list has is_sibling==0, and subsequent members of sibling lists |
| 95 | have is_sibling==1. is_sibling allows separate sibling lists to be |
| 96 | identified while iterating through 'next'. */ |
Nicolas "Pixel" Noble | d86115e | 2015-11-20 05:56:25 +0100 | [diff] [blame] | 97 | struct grpc_tcp_listener *sibling; |
| 98 | int is_sibling; |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 99 | }; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 100 | |
| 101 | /* the overall server */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 102 | struct grpc_tcp_server { |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 103 | gpr_refcount refs; |
Robbie Shade | 3cd2d18 | 2015-08-28 14:30:35 -0400 | [diff] [blame] | 104 | /* Called whenever accept() succeeds on a server port. */ |
| 105 | grpc_tcp_server_cb on_accept_cb; |
| 106 | void *on_accept_cb_arg; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 107 | |
| 108 | gpr_mu mu; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 109 | |
| 110 | /* active port count: how many ports are actually still listening */ |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 111 | size_t active_ports; |
| 112 | /* destroyed port count: how many ports are completely destroyed */ |
| 113 | size_t destroyed_ports; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 114 | |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 115 | /* is this server shutting down? */ |
| 116 | bool shutdown; |
Craig Tiller | f26236a | 2017-03-07 09:43:51 -0800 | [diff] [blame] | 117 | /* have listeners been shutdown? */ |
| 118 | bool shutdown_listeners; |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 119 | /* use SO_REUSEPORT */ |
| 120 | bool so_reuseport; |
Dan Born | 8886a81 | 2016-07-08 16:06:07 -0700 | [diff] [blame] | 121 | /* expand wildcard addresses to a list of all local addresses */ |
| 122 | bool expand_wildcard_addrs; |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 123 | |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 124 | /* linked list of server ports */ |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 125 | grpc_tcp_listener *head; |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 126 | grpc_tcp_listener *tail; |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 127 | unsigned nports; |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 128 | |
Dan Born | 9c12bc2 | 2016-01-13 16:52:20 -0800 | [diff] [blame] | 129 | /* List of closures passed to shutdown_starting_add(). */ |
| 130 | grpc_closure_list shutdown_starting; |
| 131 | |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 132 | /* shutdown callback */ |
Craig Tiller | d1bec03 | 2015-09-18 17:29:00 -0700 | [diff] [blame] | 133 | grpc_closure *shutdown_complete; |
Craig Tiller | 0189ac0 | 2015-05-11 14:59:19 -0700 | [diff] [blame] | 134 | |
Craig Tiller | 6174b9a | 2015-06-18 08:13:05 -0700 | [diff] [blame] | 135 | /* all pollsets interested in new connections */ |
Craig Tiller | 0189ac0 | 2015-05-11 14:59:19 -0700 | [diff] [blame] | 136 | grpc_pollset **pollsets; |
Craig Tiller | 6174b9a | 2015-06-18 08:13:05 -0700 | [diff] [blame] | 137 | /* number of pollsets in the pollsets array */ |
Craig Tiller | 0189ac0 | 2015-05-11 14:59:19 -0700 | [diff] [blame] | 138 | size_t pollset_count; |
Craig Tiller | 53dd6b9 | 2016-05-24 13:49:50 -0700 | [diff] [blame] | 139 | |
| 140 | /* next pollset to assign a channel to */ |
Craig Tiller | b76471d | 2016-07-01 10:24:56 -0700 | [diff] [blame] | 141 | gpr_atm next_pollset_to_assign; |
Craig Tiller | e34c285 | 2016-09-23 09:43:32 -0700 | [diff] [blame] | 142 | |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 143 | grpc_resource_quota *resource_quota; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 144 | }; |
| 145 | |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 146 | static gpr_once check_init = GPR_ONCE_INIT; |
Nicolas "Pixel" Noble | baa35fc | 2016-08-19 02:20:11 +0200 | [diff] [blame] | 147 | static bool has_so_reuseport = false; |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 148 | |
| 149 | static void init(void) { |
Nicolas "Pixel" Noble | baa35fc | 2016-08-19 02:20:11 +0200 | [diff] [blame] | 150 | #ifndef GPR_MANYLINUX1 |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 151 | int s = socket(AF_INET, SOCK_STREAM, 0); |
| 152 | if (s >= 0) { |
| 153 | has_so_reuseport = GRPC_LOG_IF_ERROR("check for SO_REUSEPORT", |
| 154 | grpc_set_socket_reuse_port(s, 1)); |
| 155 | close(s); |
| 156 | } |
Nicolas "Pixel" Noble | baa35fc | 2016-08-19 02:20:11 +0200 | [diff] [blame] | 157 | #endif |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 158 | } |
| 159 | |
Craig Tiller | e34c285 | 2016-09-23 09:43:32 -0700 | [diff] [blame] | 160 | grpc_error *grpc_tcp_server_create(grpc_exec_ctx *exec_ctx, |
| 161 | grpc_closure *shutdown_complete, |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 162 | const grpc_channel_args *args, |
Craig Tiller | 0b5857f | 2016-05-04 10:58:06 -0700 | [diff] [blame] | 163 | grpc_tcp_server **server) { |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 164 | gpr_once_init(&check_init, init); |
| 165 | |
Craig Tiller | 702a445 | 2017-03-07 09:53:00 -0800 | [diff] [blame] | 166 | grpc_tcp_server *s = gpr_zalloc(sizeof(grpc_tcp_server)); |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 167 | s->so_reuseport = has_so_reuseport; |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 168 | s->resource_quota = grpc_resource_quota_create(NULL); |
Dan Born | 8886a81 | 2016-07-08 16:06:07 -0700 | [diff] [blame] | 169 | s->expand_wildcard_addrs = false; |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 170 | for (size_t i = 0; i < (args == NULL ? 0 : args->num_args); i++) { |
| 171 | if (0 == strcmp(GRPC_ARG_ALLOW_REUSEPORT, args->args[i].key)) { |
| 172 | if (args->args[i].type == GRPC_ARG_INTEGER) { |
| 173 | s->so_reuseport = |
| 174 | has_so_reuseport && (args->args[i].value.integer != 0); |
| 175 | } else { |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 176 | grpc_resource_quota_unref_internal(exec_ctx, s->resource_quota); |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 177 | gpr_free(s); |
| 178 | return GRPC_ERROR_CREATE(GRPC_ARG_ALLOW_REUSEPORT |
| 179 | " must be an integer"); |
| 180 | } |
Craig Tiller | 153eaa7 | 2016-10-21 13:52:36 -0700 | [diff] [blame] | 181 | } else if (0 == strcmp(GRPC_ARG_RESOURCE_QUOTA, args->args[i].key)) { |
Craig Tiller | e34c285 | 2016-09-23 09:43:32 -0700 | [diff] [blame] | 182 | if (args->args[i].type == GRPC_ARG_POINTER) { |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 183 | grpc_resource_quota_unref_internal(exec_ctx, s->resource_quota); |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 184 | s->resource_quota = |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 185 | grpc_resource_quota_ref_internal(args->args[i].value.pointer.p); |
Craig Tiller | e34c285 | 2016-09-23 09:43:32 -0700 | [diff] [blame] | 186 | } else { |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 187 | grpc_resource_quota_unref_internal(exec_ctx, s->resource_quota); |
Craig Tiller | e34c285 | 2016-09-23 09:43:32 -0700 | [diff] [blame] | 188 | gpr_free(s); |
Craig Tiller | 153eaa7 | 2016-10-21 13:52:36 -0700 | [diff] [blame] | 189 | return GRPC_ERROR_CREATE(GRPC_ARG_RESOURCE_QUOTA |
Craig Tiller | e34c285 | 2016-09-23 09:43:32 -0700 | [diff] [blame] | 190 | " must be a pointer to a buffer pool"); |
| 191 | } |
Dan Born | 8886a81 | 2016-07-08 16:06:07 -0700 | [diff] [blame] | 192 | } else if (0 == strcmp(GRPC_ARG_EXPAND_WILDCARD_ADDRS, args->args[i].key)) { |
| 193 | if (args->args[i].type == GRPC_ARG_INTEGER) { |
| 194 | s->expand_wildcard_addrs = (args->args[i].value.integer != 0); |
| 195 | } else { |
Dan Born | 3158f7b | 2017-02-09 20:32:02 -0800 | [diff] [blame] | 196 | grpc_resource_quota_unref_internal(exec_ctx, s->resource_quota); |
Dan Born | 8886a81 | 2016-07-08 16:06:07 -0700 | [diff] [blame] | 197 | gpr_free(s); |
| 198 | return GRPC_ERROR_CREATE(GRPC_ARG_EXPAND_WILDCARD_ADDRS |
| 199 | " must be an integer"); |
| 200 | } |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 201 | } |
| 202 | } |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 203 | gpr_ref_init(&s->refs, 1); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 204 | gpr_mu_init(&s->mu); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 205 | s->active_ports = 0; |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 206 | s->destroyed_ports = 0; |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 207 | s->shutdown = false; |
Dan Born | 9c12bc2 | 2016-01-13 16:52:20 -0800 | [diff] [blame] | 208 | s->shutdown_starting.head = NULL; |
| 209 | s->shutdown_starting.tail = NULL; |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 210 | s->shutdown_complete = shutdown_complete; |
Robbie Shade | 3cd2d18 | 2015-08-28 14:30:35 -0400 | [diff] [blame] | 211 | s->on_accept_cb = NULL; |
| 212 | s->on_accept_cb_arg = NULL; |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 213 | s->head = NULL; |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 214 | s->tail = NULL; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 215 | s->nports = 0; |
Craig Tiller | b76471d | 2016-07-01 10:24:56 -0700 | [diff] [blame] | 216 | gpr_atm_no_barrier_store(&s->next_pollset_to_assign, 0); |
Craig Tiller | 0b5857f | 2016-05-04 10:58:06 -0700 | [diff] [blame] | 217 | *server = s; |
| 218 | return GRPC_ERROR_NONE; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 219 | } |
| 220 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 221 | 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] | 222 | gpr_mu_lock(&s->mu); |
| 223 | GPR_ASSERT(s->shutdown); |
| 224 | gpr_mu_unlock(&s->mu); |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 225 | if (s->shutdown_complete != NULL) { |
Craig Tiller | 91031da | 2016-12-28 15:44:25 -0800 | [diff] [blame] | 226 | grpc_closure_sched(exec_ctx, s->shutdown_complete, GRPC_ERROR_NONE); |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 227 | } |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 228 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 229 | gpr_mu_destroy(&s->mu); |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 230 | |
Nicolas "Pixel" Noble | c6a7c6e | 2015-11-19 21:55:44 +0100 | [diff] [blame] | 231 | while (s->head) { |
| 232 | grpc_tcp_listener *sp = s->head; |
| 233 | s->head = sp->next; |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 234 | gpr_free(sp); |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 235 | } |
| 236 | |
Craig Tiller | a59c16c | 2016-10-31 07:25:01 -0700 | [diff] [blame] | 237 | grpc_resource_quota_unref_internal(exec_ctx, s->resource_quota); |
Craig Tiller | e34c285 | 2016-09-23 09:43:32 -0700 | [diff] [blame] | 238 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 239 | gpr_free(s); |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 240 | } |
| 241 | |
Craig Tiller | 6c39686 | 2016-01-28 13:53:40 -0800 | [diff] [blame] | 242 | static void destroyed_port(grpc_exec_ctx *exec_ctx, void *server, |
Craig Tiller | c027e77 | 2016-05-03 16:27:00 -0700 | [diff] [blame] | 243 | grpc_error *error) { |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 244 | grpc_tcp_server *s = server; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 245 | gpr_mu_lock(&s->mu); |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 246 | s->destroyed_ports++; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 247 | if (s->destroyed_ports == s->nports) { |
| 248 | gpr_mu_unlock(&s->mu); |
| 249 | finish_shutdown(exec_ctx, s); |
| 250 | } else { |
| 251 | GPR_ASSERT(s->destroyed_ports < s->nports); |
| 252 | gpr_mu_unlock(&s->mu); |
| 253 | } |
Craig Tiller | aec96aa | 2015-04-07 14:32:15 -0700 | [diff] [blame] | 254 | } |
| 255 | |
Craig Tiller | 6174b9a | 2015-06-18 08:13:05 -0700 | [diff] [blame] | 256 | /* called when all listening endpoints have been shutdown, so no further |
| 257 | events will be received on them - at this point it's safe to destroy |
| 258 | things */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 259 | 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] | 260 | /* delete ALL the things */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 261 | gpr_mu_lock(&s->mu); |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 262 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 263 | if (!s->shutdown) { |
| 264 | gpr_mu_unlock(&s->mu); |
| 265 | return; |
| 266 | } |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame] | 267 | |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 268 | if (s->head) { |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 269 | grpc_tcp_listener *sp; |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 270 | for (sp = s->head; sp; sp = sp->next) { |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 271 | grpc_unlink_if_unix_domain_socket(&sp->addr); |
Craig Tiller | 3cb3447 | 2016-12-28 16:11:38 -0800 | [diff] [blame] | 272 | grpc_closure_init(&sp->destroyed_closure, destroyed_port, s, |
| 273 | grpc_schedule_on_exec_ctx); |
yang-g | 5d85037 | 2015-12-01 10:32:28 -0800 | [diff] [blame] | 274 | grpc_fd_orphan(exec_ctx, sp->emfd, &sp->destroyed_closure, NULL, |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 275 | "tcp_listener_shutdown"); |
Craig Tiller | 45724b3 | 2015-09-22 10:42:19 -0700 | [diff] [blame] | 276 | } |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 277 | gpr_mu_unlock(&s->mu); |
| 278 | } else { |
| 279 | gpr_mu_unlock(&s->mu); |
| 280 | finish_shutdown(exec_ctx, s); |
| 281 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 282 | } |
| 283 | |
Dan Born | 5d81d15 | 2016-01-12 20:29:29 -0800 | [diff] [blame] | 284 | 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] | 285 | gpr_mu_lock(&s->mu); |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 286 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 287 | GPR_ASSERT(!s->shutdown); |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 288 | s->shutdown = true; |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 289 | |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 290 | /* shutdown all fd's */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 291 | if (s->active_ports) { |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 292 | grpc_tcp_listener *sp; |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 293 | for (sp = s->head; sp; sp = sp->next) { |
Craig Tiller | cda759d | 2017-01-27 11:37:37 -0800 | [diff] [blame] | 294 | grpc_fd_shutdown(exec_ctx, sp->emfd, |
| 295 | GRPC_ERROR_CREATE("Server destroyed")); |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 296 | } |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 297 | gpr_mu_unlock(&s->mu); |
| 298 | } else { |
| 299 | gpr_mu_unlock(&s->mu); |
| 300 | deactivated_all_ports(exec_ctx, s); |
| 301 | } |
Craig Tiller | 6f05140 | 2015-05-13 11:42:42 -0700 | [diff] [blame] | 302 | } |
| 303 | |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 304 | /* get max listen queue size on linux */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 305 | static void init_max_accept_queue_size(void) { |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 306 | int n = SOMAXCONN; |
| 307 | char buf[64]; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 308 | FILE *fp = fopen("/proc/sys/net/core/somaxconn", "r"); |
| 309 | if (fp == NULL) { |
| 310 | /* 2.4 kernel. */ |
| 311 | s_max_accept_queue_size = SOMAXCONN; |
| 312 | return; |
| 313 | } |
| 314 | if (fgets(buf, sizeof buf, fp)) { |
| 315 | char *end; |
| 316 | long i = strtol(buf, &end, 10); |
| 317 | if (i > 0 && i <= INT_MAX && end && *end == 0) { |
| 318 | n = (int)i; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 319 | } |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 320 | } |
| 321 | fclose(fp); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 322 | s_max_accept_queue_size = n; |
| 323 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 324 | if (s_max_accept_queue_size < MIN_SAFE_ACCEPT_QUEUE_SIZE) { |
| 325 | gpr_log(GPR_INFO, |
| 326 | "Suspiciously small accept queue (%d) will probably lead to " |
| 327 | "connection drops", |
| 328 | s_max_accept_queue_size); |
| 329 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 330 | } |
| 331 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 332 | static int get_max_accept_queue_size(void) { |
| 333 | 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] | 334 | return s_max_accept_queue_size; |
| 335 | } |
| 336 | |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 337 | /* Prepare a recently-created socket for listening. */ |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 338 | static grpc_error *prepare_socket(int fd, const grpc_resolved_address *addr, |
| 339 | bool so_reuseport, int *port) { |
| 340 | grpc_resolved_address sockname_temp; |
Craig Tiller | 80384bd | 2016-05-06 16:12:31 -0700 | [diff] [blame] | 341 | grpc_error *err = GRPC_ERROR_NONE; |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 342 | |
Craig Tiller | 80384bd | 2016-05-06 16:12:31 -0700 | [diff] [blame] | 343 | GPR_ASSERT(fd >= 0); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 344 | |
Yuchen Zeng | 2414bbb | 2016-08-08 21:22:54 -0700 | [diff] [blame] | 345 | if (so_reuseport && !grpc_is_unix_socket(addr)) { |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 346 | err = grpc_set_socket_reuse_port(fd, 1); |
| 347 | if (err != GRPC_ERROR_NONE) goto error; |
| 348 | } |
| 349 | |
Craig Tiller | 80384bd | 2016-05-06 16:12:31 -0700 | [diff] [blame] | 350 | err = grpc_set_socket_nonblocking(fd, 1); |
| 351 | if (err != GRPC_ERROR_NONE) goto error; |
| 352 | err = grpc_set_socket_cloexec(fd, 1); |
| 353 | if (err != GRPC_ERROR_NONE) goto error; |
| 354 | if (!grpc_is_unix_socket(addr)) { |
| 355 | err = grpc_set_socket_low_latency(fd, 1); |
| 356 | if (err != GRPC_ERROR_NONE) goto error; |
| 357 | err = grpc_set_socket_reuse_addr(fd, 1); |
| 358 | if (err != GRPC_ERROR_NONE) goto error; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 359 | } |
Craig Tiller | 80384bd | 2016-05-06 16:12:31 -0700 | [diff] [blame] | 360 | err = grpc_set_socket_no_sigpipe_if_possible(fd); |
| 361 | if (err != GRPC_ERROR_NONE) goto error; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 362 | |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 363 | GPR_ASSERT(addr->len < ~(socklen_t)0); |
| 364 | 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] | 365 | err = GRPC_OS_ERROR(errno, "bind"); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 366 | goto error; |
| 367 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 368 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 369 | if (listen(fd, get_max_accept_queue_size()) < 0) { |
Craig Tiller | 80384bd | 2016-05-06 16:12:31 -0700 | [diff] [blame] | 370 | err = GRPC_OS_ERROR(errno, "listen"); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 371 | goto error; |
| 372 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 373 | |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 374 | sockname_temp.len = sizeof(struct sockaddr_storage); |
| 375 | |
murgatroid99 | dedb923 | 2016-09-26 13:54:04 -0700 | [diff] [blame] | 376 | if (getsockname(fd, (struct sockaddr *)sockname_temp.addr, |
| 377 | (socklen_t *)&sockname_temp.len) < 0) { |
Craig Tiller | 80384bd | 2016-05-06 16:12:31 -0700 | [diff] [blame] | 378 | err = GRPC_OS_ERROR(errno, "getsockname"); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 379 | goto error; |
| 380 | } |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 381 | |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 382 | *port = grpc_sockaddr_get_port(&sockname_temp); |
Craig Tiller | 80384bd | 2016-05-06 16:12:31 -0700 | [diff] [blame] | 383 | return GRPC_ERROR_NONE; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 384 | |
| 385 | error: |
Craig Tiller | 94f8453 | 2016-05-06 21:03:29 -0700 | [diff] [blame] | 386 | GPR_ASSERT(err != GRPC_ERROR_NONE); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 387 | if (fd >= 0) { |
| 388 | close(fd); |
| 389 | } |
David Garcia Quintas | 32ec133 | 2016-05-11 12:22:53 -0700 | [diff] [blame] | 390 | grpc_error *ret = grpc_error_set_int( |
Craig Tiller | 80384bd | 2016-05-06 16:12:31 -0700 | [diff] [blame] | 391 | GRPC_ERROR_CREATE_REFERENCING("Unable to configure socket", &err, 1), |
| 392 | GRPC_ERROR_INT_FD, fd); |
David Garcia Quintas | 32ec133 | 2016-05-11 12:22:53 -0700 | [diff] [blame] | 393 | GRPC_ERROR_UNREF(err); |
| 394 | return ret; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 395 | } |
| 396 | |
| 397 | /* event manager callback when reads are ready */ |
Craig Tiller | c027e77 | 2016-05-03 16:27:00 -0700 | [diff] [blame] | 398 | 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] | 399 | grpc_tcp_listener *sp = arg; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 400 | |
Craig Tiller | c027e77 | 2016-05-03 16:27:00 -0700 | [diff] [blame] | 401 | if (err != GRPC_ERROR_NONE) { |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 402 | goto error; |
| 403 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 404 | |
Mark D. Roth | eed3815 | 2016-12-08 13:59:13 -0800 | [diff] [blame] | 405 | grpc_pollset *read_notifier_pollset = |
Craig Tiller | b76471d | 2016-07-01 10:24:56 -0700 | [diff] [blame] | 406 | sp->server->pollsets[(size_t)gpr_atm_no_barrier_fetch_add( |
| 407 | &sp->server->next_pollset_to_assign, 1) % |
Craig Tiller | 53dd6b9 | 2016-05-24 13:49:50 -0700 | [diff] [blame] | 408 | sp->server->pollset_count]; |
Sree Kuchibhotla | 42b004a | 2016-04-08 14:41:49 -0700 | [diff] [blame] | 409 | |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 410 | /* loop until accept4 returns EAGAIN, and then re-arm notification */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 411 | for (;;) { |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 412 | grpc_resolved_address addr; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 413 | char *addr_str; |
| 414 | char *name; |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 415 | addr.len = sizeof(struct sockaddr_storage); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 416 | /* Note: If we ever decide to return this address to the user, remember to |
| 417 | strip off the ::ffff:0.0.0.0/96 prefix first. */ |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 418 | int fd = grpc_accept4(sp->fd, &addr, 1, 1); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 419 | if (fd < 0) { |
| 420 | switch (errno) { |
| 421 | case EINTR: |
| 422 | continue; |
| 423 | case EAGAIN: |
| 424 | grpc_fd_notify_on_read(exec_ctx, sp->emfd, &sp->read_closure); |
| 425 | return; |
| 426 | default: |
Craig Tiller | 1444464 | 2017-03-07 16:21:55 -0800 | [diff] [blame^] | 427 | gpr_mu_lock(&sp->server->mu); |
Craig Tiller | f26236a | 2017-03-07 09:43:51 -0800 | [diff] [blame] | 428 | if (!sp->server->shutdown_listeners) { |
| 429 | gpr_log(GPR_ERROR, "Failed accept4: %s", strerror(errno)); |
| 430 | } else { |
| 431 | /* if we have shutdown listeners, accept4 could fail, and we |
| 432 | needn't notify users */ |
| 433 | } |
Craig Tiller | 1444464 | 2017-03-07 16:21:55 -0800 | [diff] [blame^] | 434 | gpr_mu_unlock(&sp->server->mu); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 435 | goto error; |
| 436 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 437 | } |
| 438 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 439 | grpc_set_socket_no_sigpipe_if_possible(fd); |
| 440 | |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 441 | addr_str = grpc_sockaddr_to_uri(&addr); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 442 | gpr_asprintf(&name, "tcp-server-connection:%s", addr_str); |
| 443 | |
| 444 | if (grpc_tcp_trace) { |
| 445 | gpr_log(GPR_DEBUG, "SERVER_CONNECT: incoming connection: %s", addr_str); |
| 446 | } |
| 447 | |
Mark D. Roth | eed3815 | 2016-12-08 13:59:13 -0800 | [diff] [blame] | 448 | grpc_fd *fdobj = grpc_fd_create(fd, name); |
Sree Kuchibhotla | 42b004a | 2016-04-08 14:41:49 -0700 | [diff] [blame] | 449 | |
Sree Kuchibhotla | 42b004a | 2016-04-08 14:41:49 -0700 | [diff] [blame] | 450 | grpc_pollset_add_fd(exec_ctx, read_notifier_pollset, fdobj); |
| 451 | |
Mark D. Roth | 6c07bf8 | 2016-12-09 08:38:38 -0800 | [diff] [blame] | 452 | // Create acceptor. |
| 453 | grpc_tcp_server_acceptor *acceptor = gpr_malloc(sizeof(*acceptor)); |
| 454 | acceptor->from_server = sp->server; |
| 455 | acceptor->port_index = sp->port_index; |
| 456 | acceptor->fd_index = sp->fd_index; |
| 457 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 458 | sp->server->on_accept_cb( |
| 459 | exec_ctx, sp->server->on_accept_cb_arg, |
Craig Tiller | 20afa3d | 2016-10-17 14:52:14 -0700 | [diff] [blame] | 460 | grpc_tcp_create(fdobj, sp->server->resource_quota, |
Craig Tiller | e34c285 | 2016-09-23 09:43:32 -0700 | [diff] [blame] | 461 | GRPC_TCP_DEFAULT_READ_SLICE_SIZE, addr_str), |
Mark D. Roth | eed3815 | 2016-12-08 13:59:13 -0800 | [diff] [blame] | 462 | read_notifier_pollset, acceptor); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 463 | |
| 464 | gpr_free(name); |
| 465 | gpr_free(addr_str); |
| 466 | } |
| 467 | |
yang-g | b063c87 | 2015-10-07 11:40:13 -0700 | [diff] [blame] | 468 | GPR_UNREACHABLE_CODE(return ); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 469 | |
| 470 | error: |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 471 | gpr_mu_lock(&sp->server->mu); |
| 472 | if (0 == --sp->server->active_ports) { |
| 473 | gpr_mu_unlock(&sp->server->mu); |
| 474 | deactivated_all_ports(exec_ctx, sp->server); |
| 475 | } else { |
| 476 | gpr_mu_unlock(&sp->server->mu); |
| 477 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 478 | } |
| 479 | |
Craig Tiller | 80384bd | 2016-05-06 16:12:31 -0700 | [diff] [blame] | 480 | static grpc_error *add_socket_to_server(grpc_tcp_server *s, int fd, |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 481 | const grpc_resolved_address *addr, |
murgatroid99 | dedb923 | 2016-09-26 13:54:04 -0700 | [diff] [blame] | 482 | unsigned port_index, unsigned fd_index, |
Craig Tiller | 80384bd | 2016-05-06 16:12:31 -0700 | [diff] [blame] | 483 | grpc_tcp_listener **listener) { |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 484 | grpc_tcp_listener *sp = NULL; |
Craig Tiller | 9147296 | 2016-05-09 11:01:15 -0700 | [diff] [blame] | 485 | int port = -1; |
Craig Tiller | fa275a9 | 2015-06-01 13:55:54 -0700 | [diff] [blame] | 486 | char *addr_str; |
| 487 | char *name; |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 488 | |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 489 | grpc_error *err = prepare_socket(fd, addr, s->so_reuseport, &port); |
Craig Tiller | 80384bd | 2016-05-06 16:12:31 -0700 | [diff] [blame] | 490 | if (err == GRPC_ERROR_NONE) { |
Craig Tiller | 9147296 | 2016-05-09 11:01:15 -0700 | [diff] [blame] | 491 | GPR_ASSERT(port > 0); |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 492 | grpc_sockaddr_to_string(&addr_str, addr, 1); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 493 | gpr_asprintf(&name, "tcp-server-listener:%s", addr_str); |
| 494 | gpr_mu_lock(&s->mu); |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 495 | s->nports++; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 496 | GPR_ASSERT(!s->on_accept_cb && "must add ports before starting server"); |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 497 | sp = gpr_malloc(sizeof(grpc_tcp_listener)); |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 498 | sp->next = NULL; |
| 499 | if (s->head == NULL) { |
| 500 | s->head = sp; |
| 501 | } else { |
| 502 | s->tail->next = sp; |
| 503 | } |
| 504 | s->tail = sp; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 505 | sp->server = s; |
| 506 | sp->fd = fd; |
| 507 | sp->emfd = grpc_fd_create(fd, name); |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 508 | memcpy(&sp->addr, addr, sizeof(grpc_resolved_address)); |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 509 | sp->port = port; |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 510 | sp->port_index = port_index; |
| 511 | sp->fd_index = fd_index; |
Nicolas "Pixel" Noble | d86115e | 2015-11-20 05:56:25 +0100 | [diff] [blame] | 512 | sp->is_sibling = 0; |
| 513 | sp->sibling = NULL; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 514 | GPR_ASSERT(sp->emfd); |
| 515 | gpr_mu_unlock(&s->mu); |
| 516 | gpr_free(addr_str); |
| 517 | gpr_free(name); |
| 518 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 519 | |
Craig Tiller | 80384bd | 2016-05-06 16:12:31 -0700 | [diff] [blame] | 520 | *listener = sp; |
| 521 | return err; |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 522 | } |
| 523 | |
Dan Born | 8886a81 | 2016-07-08 16:06:07 -0700 | [diff] [blame] | 524 | /* If successful, add a listener to s for addr, set *dsmode for the socket, and |
| 525 | return the *listener. */ |
| 526 | static grpc_error *add_addr_to_server(grpc_tcp_server *s, |
| 527 | const grpc_resolved_address *addr, |
| 528 | unsigned port_index, unsigned fd_index, |
| 529 | grpc_dualstack_mode *dsmode, |
| 530 | grpc_tcp_listener **listener) { |
| 531 | grpc_resolved_address addr4_copy; |
| 532 | int fd; |
| 533 | grpc_error *err = |
| 534 | grpc_create_dualstack_socket(addr, SOCK_STREAM, 0, dsmode, &fd); |
| 535 | if (err != GRPC_ERROR_NONE) { |
| 536 | return err; |
| 537 | } |
| 538 | if (*dsmode == GRPC_DSMODE_IPV4 && |
| 539 | grpc_sockaddr_is_v4mapped(addr, &addr4_copy)) { |
| 540 | addr = &addr4_copy; |
| 541 | } |
| 542 | return add_socket_to_server(s, fd, addr, port_index, fd_index, listener); |
| 543 | } |
| 544 | |
| 545 | /* Bind to "::" to get a port number not used by any address. */ |
| 546 | static grpc_error *get_unused_port(int *port) { |
| 547 | grpc_resolved_address wild; |
| 548 | grpc_sockaddr_make_wildcard6(0, &wild); |
| 549 | grpc_dualstack_mode dsmode; |
| 550 | int fd; |
| 551 | grpc_error *err = |
| 552 | grpc_create_dualstack_socket(&wild, SOCK_STREAM, 0, &dsmode, &fd); |
| 553 | if (err != GRPC_ERROR_NONE) { |
| 554 | return err; |
| 555 | } |
| 556 | if (dsmode == GRPC_DSMODE_IPV4) { |
| 557 | grpc_sockaddr_make_wildcard4(0, &wild); |
| 558 | } |
| 559 | if (bind(fd, (const struct sockaddr *)wild.addr, (socklen_t)wild.len) != 0) { |
| 560 | err = GRPC_OS_ERROR(errno, "bind"); |
| 561 | close(fd); |
| 562 | return err; |
| 563 | } |
| 564 | if (getsockname(fd, (struct sockaddr *)wild.addr, (socklen_t *)&wild.len) != |
| 565 | 0) { |
| 566 | err = GRPC_OS_ERROR(errno, "getsockname"); |
| 567 | close(fd); |
| 568 | return err; |
| 569 | } |
| 570 | close(fd); |
| 571 | *port = grpc_sockaddr_get_port(&wild); |
| 572 | return *port <= 0 ? GRPC_ERROR_CREATE("Bad port") : GRPC_ERROR_NONE; |
| 573 | } |
| 574 | |
| 575 | /* Return the listener in s with address addr or NULL. */ |
| 576 | static grpc_tcp_listener *find_listener_with_addr(grpc_tcp_server *s, |
| 577 | grpc_resolved_address *addr) { |
| 578 | grpc_tcp_listener *l; |
| 579 | gpr_mu_lock(&s->mu); |
| 580 | for (l = s->head; l != NULL; l = l->next) { |
| 581 | if (l->addr.len != addr->len) { |
| 582 | continue; |
| 583 | } |
| 584 | if (memcmp(l->addr.addr, addr->addr, addr->len) == 0) { |
| 585 | break; |
| 586 | } |
| 587 | } |
| 588 | gpr_mu_unlock(&s->mu); |
| 589 | return l; |
| 590 | } |
| 591 | |
| 592 | /* Get all addresses assigned to network interfaces on the machine and create a |
| 593 | listener for each. requested_port is the port to use for every listener, or 0 |
| 594 | to select one random port that will be used for every listener. Set *out_port |
| 595 | to the port selected. Return GRPC_ERROR_NONE only if all listeners were |
| 596 | added. */ |
| 597 | static grpc_error *add_all_local_addrs_to_server(grpc_tcp_server *s, |
| 598 | unsigned port_index, |
| 599 | int requested_port, |
| 600 | int *out_port) { |
| 601 | struct ifaddrs *ifa = NULL; |
| 602 | struct ifaddrs *ifa_it; |
| 603 | unsigned fd_index = 0; |
| 604 | grpc_tcp_listener *sp = NULL; |
| 605 | grpc_error *err = GRPC_ERROR_NONE; |
| 606 | if (requested_port == 0) { |
| 607 | /* Note: There could be a race where some local addrs can listen on the |
| 608 | selected port and some can't. The sane way to handle this would be to |
| 609 | retry by recreating the whole grpc_tcp_server. Backing out individual |
| 610 | listeners and orphaning the FDs looks like too much trouble. */ |
| 611 | if ((err = get_unused_port(&requested_port)) != GRPC_ERROR_NONE) { |
| 612 | return err; |
| 613 | } else if (requested_port <= 0) { |
| 614 | return GRPC_ERROR_CREATE("Bad get_unused_port()"); |
| 615 | } |
| 616 | gpr_log(GPR_DEBUG, "Picked unused port %d", requested_port); |
| 617 | } |
| 618 | if (getifaddrs(&ifa) != 0 || ifa == NULL) { |
| 619 | return GRPC_OS_ERROR(errno, "getifaddrs"); |
| 620 | } |
| 621 | for (ifa_it = ifa; ifa_it != NULL; ifa_it = ifa_it->ifa_next) { |
| 622 | grpc_resolved_address addr; |
| 623 | char *addr_str = NULL; |
| 624 | grpc_dualstack_mode dsmode; |
| 625 | grpc_tcp_listener *new_sp = NULL; |
| 626 | const char *ifa_name = (ifa_it->ifa_name ? ifa_it->ifa_name : "<unknown>"); |
| 627 | if (ifa_it->ifa_addr == NULL) { |
| 628 | continue; |
| 629 | } else if (ifa_it->ifa_addr->sa_family == AF_INET) { |
| 630 | addr.len = sizeof(struct sockaddr_in); |
| 631 | } else if (ifa_it->ifa_addr->sa_family == AF_INET6) { |
| 632 | addr.len = sizeof(struct sockaddr_in6); |
| 633 | } else { |
| 634 | continue; |
| 635 | } |
| 636 | memcpy(addr.addr, ifa_it->ifa_addr, addr.len); |
| 637 | if (!grpc_sockaddr_set_port(&addr, requested_port)) { |
| 638 | /* Should never happen, because we check sa_family above. */ |
| 639 | err = GRPC_ERROR_CREATE("Failed to set port"); |
| 640 | break; |
| 641 | } |
| 642 | if (grpc_sockaddr_to_string(&addr_str, &addr, 0) < 0) { |
| 643 | addr_str = gpr_strdup("<error>"); |
| 644 | } |
| 645 | gpr_log(GPR_DEBUG, |
| 646 | "Adding local addr from interface %s flags 0x%x to server: %s", |
| 647 | ifa_name, ifa_it->ifa_flags, addr_str); |
| 648 | /* We could have multiple interfaces with the same address (e.g., bonding), |
| 649 | so look for duplicates. */ |
| 650 | if (find_listener_with_addr(s, &addr) != NULL) { |
| 651 | gpr_log(GPR_DEBUG, "Skipping duplicate addr %s on interface %s", addr_str, |
| 652 | ifa_name); |
| 653 | gpr_free(addr_str); |
| 654 | continue; |
| 655 | } |
| 656 | if ((err = add_addr_to_server(s, &addr, port_index, fd_index, &dsmode, |
| 657 | &new_sp)) != GRPC_ERROR_NONE) { |
| 658 | char *err_str = NULL; |
| 659 | grpc_error *root_err; |
| 660 | if (gpr_asprintf(&err_str, "Failed to add listener: %s", addr_str) < 0) { |
| 661 | err_str = gpr_strdup("Failed to add listener"); |
| 662 | } |
| 663 | root_err = GRPC_ERROR_CREATE(err_str); |
| 664 | gpr_free(err_str); |
| 665 | gpr_free(addr_str); |
| 666 | err = grpc_error_add_child(root_err, err); |
| 667 | break; |
| 668 | } else { |
| 669 | GPR_ASSERT(requested_port == new_sp->port); |
| 670 | ++fd_index; |
| 671 | if (sp != NULL) { |
| 672 | new_sp->is_sibling = 1; |
| 673 | sp->sibling = new_sp; |
| 674 | } |
| 675 | sp = new_sp; |
| 676 | } |
| 677 | gpr_free(addr_str); |
| 678 | } |
| 679 | freeifaddrs(ifa); |
| 680 | if (err != GRPC_ERROR_NONE) { |
| 681 | return err; |
| 682 | } else if (sp == NULL) { |
| 683 | return GRPC_ERROR_CREATE("No local addresses"); |
| 684 | } else { |
| 685 | *out_port = sp->port; |
| 686 | return GRPC_ERROR_NONE; |
| 687 | } |
| 688 | } |
| 689 | |
| 690 | /* Treat :: or 0.0.0.0 as a family-agnostic wildcard. */ |
| 691 | static grpc_error *add_wildcard_addrs_to_server(grpc_tcp_server *s, |
| 692 | unsigned port_index, |
| 693 | int requested_port, |
| 694 | int *out_port) { |
| 695 | grpc_resolved_address wild4; |
| 696 | grpc_resolved_address wild6; |
| 697 | unsigned fd_index = 0; |
| 698 | grpc_dualstack_mode dsmode; |
| 699 | grpc_tcp_listener *sp = NULL; |
| 700 | grpc_tcp_listener *sp2 = NULL; |
| 701 | grpc_error *v6_err = GRPC_ERROR_NONE; |
| 702 | grpc_error *v4_err = GRPC_ERROR_NONE; |
| 703 | *out_port = -1; |
| 704 | if (s->expand_wildcard_addrs) { |
| 705 | return add_all_local_addrs_to_server(s, port_index, requested_port, |
| 706 | out_port); |
| 707 | } |
| 708 | grpc_sockaddr_make_wildcards(requested_port, &wild4, &wild6); |
| 709 | /* Try listening on IPv6 first. */ |
| 710 | if ((v6_err = add_addr_to_server(s, &wild6, port_index, fd_index, &dsmode, |
| 711 | &sp)) == GRPC_ERROR_NONE) { |
| 712 | ++fd_index; |
| 713 | requested_port = *out_port = sp->port; |
| 714 | if (dsmode == GRPC_DSMODE_DUALSTACK || dsmode == GRPC_DSMODE_IPV4) { |
| 715 | return GRPC_ERROR_NONE; |
| 716 | } |
| 717 | } |
| 718 | /* If we got a v6-only socket or nothing, try adding 0.0.0.0. */ |
| 719 | grpc_sockaddr_set_port(&wild4, requested_port); |
| 720 | if ((v4_err = add_addr_to_server(s, &wild4, port_index, fd_index, &dsmode, |
| 721 | &sp2)) == GRPC_ERROR_NONE) { |
| 722 | *out_port = sp2->port; |
| 723 | if (sp != NULL) { |
| 724 | sp2->is_sibling = 1; |
| 725 | sp->sibling = sp2; |
| 726 | } |
| 727 | } |
| 728 | if (*out_port > 0) { |
| 729 | GRPC_LOG_IF_ERROR("Failed to add :: listener", v6_err); |
| 730 | GRPC_LOG_IF_ERROR("Failed to add 0.0.0.0 listener", v4_err); |
| 731 | return GRPC_ERROR_NONE; |
| 732 | } else { |
| 733 | grpc_error *root_err = |
| 734 | GRPC_ERROR_CREATE("Failed to add any wildcard listeners"); |
| 735 | GPR_ASSERT(v6_err != GRPC_ERROR_NONE && v4_err != GRPC_ERROR_NONE); |
| 736 | root_err = grpc_error_add_child(root_err, v6_err); |
| 737 | root_err = grpc_error_add_child(root_err, v4_err); |
| 738 | return root_err; |
| 739 | } |
| 740 | } |
| 741 | |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 742 | static grpc_error *clone_port(grpc_tcp_listener *listener, unsigned count) { |
| 743 | grpc_tcp_listener *sp = NULL; |
| 744 | char *addr_str; |
| 745 | char *name; |
| 746 | grpc_error *err; |
| 747 | |
| 748 | for (grpc_tcp_listener *l = listener->next; l && l->is_sibling; l = l->next) { |
| 749 | l->fd_index += count; |
| 750 | } |
| 751 | |
| 752 | for (unsigned i = 0; i < count; i++) { |
Craig Tiller | 136698c | 2016-05-19 11:49:44 -0700 | [diff] [blame] | 753 | int fd = -1; |
| 754 | int port = -1; |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 755 | grpc_dualstack_mode dsmode; |
murgatroid99 | dedb923 | 2016-09-26 13:54:04 -0700 | [diff] [blame] | 756 | err = grpc_create_dualstack_socket(&listener->addr, SOCK_STREAM, 0, &dsmode, |
| 757 | &fd); |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 758 | if (err != GRPC_ERROR_NONE) return err; |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 759 | err = prepare_socket(fd, &listener->addr, true, &port); |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 760 | if (err != GRPC_ERROR_NONE) return err; |
Craig Tiller | 644da98 | 2016-05-19 09:19:28 -0700 | [diff] [blame] | 761 | listener->server->nports++; |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 762 | grpc_sockaddr_to_string(&addr_str, &listener->addr, 1); |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 763 | gpr_asprintf(&name, "tcp-server-listener:%s/clone-%d", addr_str, i); |
| 764 | sp = gpr_malloc(sizeof(grpc_tcp_listener)); |
| 765 | sp->next = listener->next; |
| 766 | listener->next = sp; |
Dan Born | ad1f31f | 2016-07-08 13:24:49 -0700 | [diff] [blame] | 767 | /* sp (the new listener) is a sibling of 'listener' (the original |
| 768 | listener). */ |
| 769 | sp->is_sibling = 1; |
| 770 | sp->sibling = listener->sibling; |
| 771 | listener->sibling = sp; |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 772 | sp->server = listener->server; |
| 773 | sp->fd = fd; |
| 774 | sp->emfd = grpc_fd_create(fd, name); |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 775 | memcpy(&sp->addr, &listener->addr, sizeof(grpc_resolved_address)); |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 776 | sp->port = port; |
| 777 | sp->port_index = listener->port_index; |
| 778 | sp->fd_index = listener->fd_index + count - i; |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 779 | GPR_ASSERT(sp->emfd); |
| 780 | while (listener->server->tail->next != NULL) { |
| 781 | listener->server->tail = listener->server->tail->next; |
| 782 | } |
| 783 | gpr_free(addr_str); |
| 784 | gpr_free(name); |
| 785 | } |
| 786 | |
| 787 | return GRPC_ERROR_NONE; |
| 788 | } |
| 789 | |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 790 | grpc_error *grpc_tcp_server_add_port(grpc_tcp_server *s, |
| 791 | const grpc_resolved_address *addr, |
| 792 | int *out_port) { |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 793 | grpc_tcp_listener *sp; |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 794 | grpc_resolved_address sockname_temp; |
Dan Born | 8886a81 | 2016-07-08 16:06:07 -0700 | [diff] [blame] | 795 | grpc_resolved_address addr6_v4mapped; |
| 796 | int requested_port = grpc_sockaddr_get_port(addr); |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 797 | unsigned port_index = 0; |
Dan Born | 8886a81 | 2016-07-08 16:06:07 -0700 | [diff] [blame] | 798 | grpc_dualstack_mode dsmode; |
| 799 | grpc_error *err; |
| 800 | *out_port = -1; |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 801 | if (s->tail != NULL) { |
| 802 | port_index = s->tail->port_index + 1; |
| 803 | } |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 804 | grpc_unlink_if_unix_domain_socket(addr); |
Craig Tiller | aa31da4 | 2015-02-17 16:33:35 -0800 | [diff] [blame] | 805 | |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 806 | /* Check if this is a wildcard port, and if so, try to keep the port the same |
| 807 | as some previously created listener. */ |
Dan Born | 8886a81 | 2016-07-08 16:06:07 -0700 | [diff] [blame] | 808 | if (requested_port == 0) { |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 809 | for (sp = s->head; sp; sp = sp->next) { |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 810 | sockname_temp.len = sizeof(struct sockaddr_storage); |
Dan Born | 8886a81 | 2016-07-08 16:06:07 -0700 | [diff] [blame] | 811 | if (0 == getsockname(sp->fd, (struct sockaddr *)&sockname_temp.addr, |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 812 | (socklen_t *)&sockname_temp.len)) { |
Dan Born | 8886a81 | 2016-07-08 16:06:07 -0700 | [diff] [blame] | 813 | int used_port = grpc_sockaddr_get_port(&sockname_temp); |
| 814 | if (used_port > 0) { |
| 815 | memcpy(&sockname_temp, addr, sizeof(grpc_resolved_address)); |
| 816 | grpc_sockaddr_set_port(&sockname_temp, used_port); |
| 817 | requested_port = used_port; |
| 818 | addr = &sockname_temp; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 819 | break; |
| 820 | } |
| 821 | } |
ctiller | 570d1f4 | 2015-01-12 16:29:52 -0800 | [diff] [blame] | 822 | } |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 823 | } |
Dan Born | 8886a81 | 2016-07-08 16:06:07 -0700 | [diff] [blame] | 824 | if (grpc_sockaddr_is_wildcard(addr, &requested_port)) { |
| 825 | return add_wildcard_addrs_to_server(s, port_index, requested_port, |
| 826 | out_port); |
| 827 | } |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 828 | if (grpc_sockaddr_to_v4mapped(addr, &addr6_v4mapped)) { |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 829 | addr = &addr6_v4mapped; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 830 | } |
Dan Born | 8886a81 | 2016-07-08 16:06:07 -0700 | [diff] [blame] | 831 | if ((err = add_addr_to_server(s, addr, port_index, 0, &dsmode, &sp)) == |
| 832 | GRPC_ERROR_NONE) { |
Craig Tiller | c027e77 | 2016-05-03 16:27:00 -0700 | [diff] [blame] | 833 | *out_port = sp->port; |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 834 | } |
Dan Born | 8886a81 | 2016-07-08 16:06:07 -0700 | [diff] [blame] | 835 | return err; |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 836 | } |
| 837 | |
Dan Born | 19e01fd | 2016-10-18 11:49:45 -0700 | [diff] [blame] | 838 | /* Return listener at port_index or NULL. Should only be called with s->mu |
| 839 | locked. */ |
Dan Born | 4e826be | 2016-10-03 20:33:25 -0700 | [diff] [blame] | 840 | static grpc_tcp_listener *get_port_index(grpc_tcp_server *s, |
| 841 | unsigned port_index) { |
| 842 | unsigned num_ports = 0; |
| 843 | grpc_tcp_listener *sp; |
| 844 | for (sp = s->head; sp; sp = sp->next) { |
| 845 | if (!sp->is_sibling) { |
| 846 | if (++num_ports > port_index) { |
| 847 | return sp; |
| 848 | } |
| 849 | } |
| 850 | } |
| 851 | return NULL; |
| 852 | } |
| 853 | |
Dan Born | 5d81d15 | 2016-01-12 20:29:29 -0800 | [diff] [blame] | 854 | unsigned grpc_tcp_server_port_fd_count(grpc_tcp_server *s, |
| 855 | unsigned port_index) { |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 856 | unsigned num_fds = 0; |
Dan Born | 930c298 | 2016-09-08 19:12:18 -0700 | [diff] [blame] | 857 | gpr_mu_lock(&s->mu); |
Dan Born | 4e826be | 2016-10-03 20:33:25 -0700 | [diff] [blame] | 858 | grpc_tcp_listener *sp = get_port_index(s, port_index); |
| 859 | for (; sp; sp = sp->sibling) { |
| 860 | ++num_fds; |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 861 | } |
Dan Born | 930c298 | 2016-09-08 19:12:18 -0700 | [diff] [blame] | 862 | gpr_mu_unlock(&s->mu); |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 863 | return num_fds; |
| 864 | } |
| 865 | |
Dan Born | 5d81d15 | 2016-01-12 20:29:29 -0800 | [diff] [blame] | 866 | int grpc_tcp_server_port_fd(grpc_tcp_server *s, unsigned port_index, |
| 867 | unsigned fd_index) { |
Dan Born | 930c298 | 2016-09-08 19:12:18 -0700 | [diff] [blame] | 868 | gpr_mu_lock(&s->mu); |
Dan Born | 4e826be | 2016-10-03 20:33:25 -0700 | [diff] [blame] | 869 | grpc_tcp_listener *sp = get_port_index(s, port_index); |
| 870 | for (; sp; sp = sp->sibling, --fd_index) { |
| 871 | if (fd_index == 0) { |
Dan Born | d9b763b | 2016-10-17 15:00:20 -0700 | [diff] [blame] | 872 | gpr_mu_unlock(&s->mu); |
Dan Born | 4e826be | 2016-10-03 20:33:25 -0700 | [diff] [blame] | 873 | return sp->fd; |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 874 | } |
| 875 | } |
Dan Born | 930c298 | 2016-09-08 19:12:18 -0700 | [diff] [blame] | 876 | gpr_mu_unlock(&s->mu); |
Dan Born | 4e826be | 2016-10-03 20:33:25 -0700 | [diff] [blame] | 877 | return -1; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 878 | } |
| 879 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 880 | void grpc_tcp_server_start(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s, |
| 881 | grpc_pollset **pollsets, size_t pollset_count, |
| 882 | grpc_tcp_server_cb on_accept_cb, |
| 883 | void *on_accept_cb_arg) { |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 884 | size_t i; |
Nicolas Noble | 8f71462 | 2015-11-19 11:16:54 -0800 | [diff] [blame] | 885 | grpc_tcp_listener *sp; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 886 | GPR_ASSERT(on_accept_cb); |
| 887 | gpr_mu_lock(&s->mu); |
| 888 | GPR_ASSERT(!s->on_accept_cb); |
| 889 | GPR_ASSERT(s->active_ports == 0); |
Robbie Shade | 3cd2d18 | 2015-08-28 14:30:35 -0400 | [diff] [blame] | 890 | s->on_accept_cb = on_accept_cb; |
| 891 | s->on_accept_cb_arg = on_accept_cb_arg; |
Craig Tiller | 0189ac0 | 2015-05-11 14:59:19 -0700 | [diff] [blame] | 892 | s->pollsets = pollsets; |
| 893 | s->pollset_count = pollset_count; |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 894 | sp = s->head; |
| 895 | while (sp != NULL) { |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 896 | if (s->so_reuseport && !grpc_is_unix_socket(&sp->addr) && |
Yuchen Zeng | d745a6f | 2016-08-08 20:44:36 -0700 | [diff] [blame] | 897 | pollset_count > 1) { |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 898 | GPR_ASSERT(GRPC_LOG_IF_ERROR( |
| 899 | "clone_port", clone_port(sp, (unsigned)(pollset_count - 1)))); |
| 900 | for (i = 0; i < pollset_count; i++) { |
| 901 | grpc_pollset_add_fd(exec_ctx, pollsets[i], sp->emfd); |
Craig Tiller | 3cb3447 | 2016-12-28 16:11:38 -0800 | [diff] [blame] | 902 | grpc_closure_init(&sp->read_closure, on_read, sp, |
| 903 | grpc_schedule_on_exec_ctx); |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 904 | grpc_fd_notify_on_read(exec_ctx, sp->emfd, &sp->read_closure); |
| 905 | s->active_ports++; |
| 906 | sp = sp->next; |
| 907 | } |
| 908 | } else { |
| 909 | for (i = 0; i < pollset_count; i++) { |
| 910 | grpc_pollset_add_fd(exec_ctx, pollsets[i], sp->emfd); |
| 911 | } |
Craig Tiller | 3cb3447 | 2016-12-28 16:11:38 -0800 | [diff] [blame] | 912 | grpc_closure_init(&sp->read_closure, on_read, sp, |
| 913 | grpc_schedule_on_exec_ctx); |
Craig Tiller | ef96264 | 2016-05-18 22:57:17 -0700 | [diff] [blame] | 914 | grpc_fd_notify_on_read(exec_ctx, sp->emfd, &sp->read_closure); |
| 915 | s->active_ports++; |
| 916 | sp = sp->next; |
ctiller | 58393c2 | 2015-01-07 14:03:30 -0800 | [diff] [blame] | 917 | } |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 918 | } |
| 919 | gpr_mu_unlock(&s->mu); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 920 | } |
Craig Tiller | 0c0b60c | 2015-01-21 15:49:28 -0800 | [diff] [blame] | 921 | |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 922 | grpc_tcp_server *grpc_tcp_server_ref(grpc_tcp_server *s) { |
Dan Born | 930c298 | 2016-09-08 19:12:18 -0700 | [diff] [blame] | 923 | gpr_ref_non_zero(&s->refs); |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 924 | return s; |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 925 | } |
| 926 | |
Dan Born | 9c12bc2 | 2016-01-13 16:52:20 -0800 | [diff] [blame] | 927 | void grpc_tcp_server_shutdown_starting_add(grpc_tcp_server *s, |
| 928 | grpc_closure *shutdown_starting) { |
| 929 | gpr_mu_lock(&s->mu); |
Craig Tiller | c027e77 | 2016-05-03 16:27:00 -0700 | [diff] [blame] | 930 | grpc_closure_list_append(&s->shutdown_starting, shutdown_starting, |
| 931 | GRPC_ERROR_NONE); |
Dan Born | 9c12bc2 | 2016-01-13 16:52:20 -0800 | [diff] [blame] | 932 | gpr_mu_unlock(&s->mu); |
| 933 | } |
| 934 | |
Dan Born | fa6b606 | 2016-01-08 21:01:59 -0800 | [diff] [blame] | 935 | void grpc_tcp_server_unref(grpc_exec_ctx *exec_ctx, grpc_tcp_server *s) { |
| 936 | if (gpr_unref(&s->refs)) { |
Dan Born | 930c298 | 2016-09-08 19:12:18 -0700 | [diff] [blame] | 937 | grpc_tcp_server_shutdown_listeners(exec_ctx, s); |
Dan Born | 9c12bc2 | 2016-01-13 16:52:20 -0800 | [diff] [blame] | 938 | gpr_mu_lock(&s->mu); |
Craig Tiller | 91031da | 2016-12-28 15:44:25 -0800 | [diff] [blame] | 939 | grpc_closure_list_sched(exec_ctx, &s->shutdown_starting); |
Dan Born | 9c12bc2 | 2016-01-13 16:52:20 -0800 | [diff] [blame] | 940 | gpr_mu_unlock(&s->mu); |
Dan Born | 930c298 | 2016-09-08 19:12:18 -0700 | [diff] [blame] | 941 | tcp_server_destroy(exec_ctx, s); |
Nicolas Noble | 5eb4e1c | 2015-11-18 17:19:45 -0800 | [diff] [blame] | 942 | } |
| 943 | } |
| 944 | |
yang-g | 9275d40 | 2016-07-11 16:51:39 -0700 | [diff] [blame] | 945 | void grpc_tcp_server_shutdown_listeners(grpc_exec_ctx *exec_ctx, |
| 946 | grpc_tcp_server *s) { |
| 947 | gpr_mu_lock(&s->mu); |
Craig Tiller | f26236a | 2017-03-07 09:43:51 -0800 | [diff] [blame] | 948 | s->shutdown_listeners = true; |
yang-g | 9275d40 | 2016-07-11 16:51:39 -0700 | [diff] [blame] | 949 | /* shutdown all fd's */ |
| 950 | if (s->active_ports) { |
| 951 | grpc_tcp_listener *sp; |
| 952 | for (sp = s->head; sp; sp = sp->next) { |
Craig Tiller | cda759d | 2017-01-27 11:37:37 -0800 | [diff] [blame] | 953 | grpc_fd_shutdown(exec_ctx, sp->emfd, |
| 954 | GRPC_ERROR_CREATE("Server shutdown")); |
yang-g | 9275d40 | 2016-07-11 16:51:39 -0700 | [diff] [blame] | 955 | } |
| 956 | } |
| 957 | gpr_mu_unlock(&s->mu); |
| 958 | } |
| 959 | |
Craig Tiller | 190d360 | 2015-02-18 09:23:38 -0800 | [diff] [blame] | 960 | #endif |