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 | |
Craig Tiller | 0c0b60c | 2015-01-21 15:49:28 -0800 | [diff] [blame] | 34 | #include <grpc/support/port_platform.h> |
| 35 | |
| 36 | #ifdef GPR_POSIX_SOCKET |
| 37 | |
Craig Tiller | 8695876 | 2016-09-23 12:05:34 -0700 | [diff] [blame] | 38 | #include "src/core/lib/iomgr/tcp_client_posix.h" |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 39 | |
| 40 | #include <errno.h> |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 41 | #include <netinet/in.h> |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 42 | #include <string.h> |
| 43 | #include <unistd.h> |
| 44 | |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 45 | #include <grpc/support/alloc.h> |
| 46 | #include <grpc/support/log.h> |
Masood Malekghassemi | 701af60 | 2015-06-03 15:01:17 -0700 | [diff] [blame] | 47 | #include <grpc/support/string_util.h> |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 48 | #include <grpc/support/time.h> |
| 49 | |
Craig Tiller | 8695876 | 2016-09-23 12:05:34 -0700 | [diff] [blame] | 50 | #include "src/core/lib/channel/channel_args.h" |
Craig Tiller | 8a03448 | 2016-03-28 16:09:04 -0700 | [diff] [blame] | 51 | #include "src/core/lib/iomgr/ev_posix.h" |
Craig Tiller | 9533d04 | 2016-03-25 17:11:06 -0700 | [diff] [blame] | 52 | #include "src/core/lib/iomgr/iomgr_posix.h" |
Craig Tiller | 9533d04 | 2016-03-25 17:11:06 -0700 | [diff] [blame] | 53 | #include "src/core/lib/iomgr/sockaddr_utils.h" |
| 54 | #include "src/core/lib/iomgr/socket_utils_posix.h" |
| 55 | #include "src/core/lib/iomgr/tcp_posix.h" |
| 56 | #include "src/core/lib/iomgr/timer.h" |
| 57 | #include "src/core/lib/iomgr/unix_sockets_posix.h" |
| 58 | #include "src/core/lib/support/string.h" |
Craig Tiller | c46beaa | 2016-02-24 09:17:19 -0800 | [diff] [blame] | 59 | |
Craig Tiller | 5e53ddb | 2015-09-16 10:53:15 -0700 | [diff] [blame] | 60 | extern int grpc_tcp_trace; |
| 61 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 62 | typedef struct { |
ctiller | 58393c2 | 2015-01-07 14:03:30 -0800 | [diff] [blame] | 63 | gpr_mu mu; |
ctiller | 18b49ab | 2014-12-09 14:39:16 -0800 | [diff] [blame] | 64 | grpc_fd *fd; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 65 | gpr_timespec deadline; |
David Garcia Quintas | f747bbc | 2015-10-04 23:09:47 -0700 | [diff] [blame] | 66 | grpc_timer alarm; |
ctiller | 58393c2 | 2015-01-07 14:03:30 -0800 | [diff] [blame] | 67 | int refs; |
Craig Tiller | 3382511 | 2015-09-18 07:44:19 -0700 | [diff] [blame] | 68 | grpc_closure write_closure; |
Craig Tiller | b4973682 | 2015-06-30 08:15:08 -0700 | [diff] [blame] | 69 | grpc_pollset_set *interested_parties; |
Craig Tiller | 1b22b9d | 2015-07-20 13:42:22 -0700 | [diff] [blame] | 70 | char *addr_str; |
Craig Tiller | d1bec03 | 2015-09-18 17:29:00 -0700 | [diff] [blame] | 71 | grpc_endpoint **ep; |
| 72 | grpc_closure *closure; |
Craig Tiller | 8695876 | 2016-09-23 12:05:34 -0700 | [diff] [blame] | 73 | grpc_channel_args *channel_args; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 74 | } async_connect; |
| 75 | |
Craig Tiller | 27f59af | 2016-04-28 14:19:48 -0700 | [diff] [blame] | 76 | static grpc_error *prepare_socket(const struct sockaddr *addr, int fd) { |
| 77 | grpc_error *err = GRPC_ERROR_NONE; |
| 78 | |
Craig Tiller | 80384bd | 2016-05-06 16:12:31 -0700 | [diff] [blame] | 79 | GPR_ASSERT(fd >= 0); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 80 | |
Craig Tiller | 4f1d0f3 | 2016-05-06 17:12:37 -0700 | [diff] [blame] | 81 | err = grpc_set_socket_nonblocking(fd, 1); |
| 82 | if (err != GRPC_ERROR_NONE) goto error; |
| 83 | err = grpc_set_socket_cloexec(fd, 1); |
| 84 | if (err != GRPC_ERROR_NONE) goto error; |
| 85 | if (!grpc_is_unix_socket(addr)) { |
| 86 | err = grpc_set_socket_low_latency(fd, 1); |
| 87 | if (err != GRPC_ERROR_NONE) goto error; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 88 | } |
Craig Tiller | 4f1d0f3 | 2016-05-06 17:12:37 -0700 | [diff] [blame] | 89 | err = grpc_set_socket_no_sigpipe_if_possible(fd); |
| 90 | if (err != GRPC_ERROR_NONE) goto error; |
Craig Tiller | 27f59af | 2016-04-28 14:19:48 -0700 | [diff] [blame] | 91 | goto done; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 92 | |
| 93 | error: |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 94 | if (fd >= 0) { |
| 95 | close(fd); |
| 96 | } |
Craig Tiller | 27f59af | 2016-04-28 14:19:48 -0700 | [diff] [blame] | 97 | done: |
| 98 | return err; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 99 | } |
| 100 | |
Craig Tiller | c027e77 | 2016-05-03 16:27:00 -0700 | [diff] [blame] | 101 | static void tc_on_alarm(grpc_exec_ctx *exec_ctx, void *acp, grpc_error *error) { |
ctiller | 58393c2 | 2015-01-07 14:03:30 -0800 | [diff] [blame] | 102 | int done; |
| 103 | async_connect *ac = acp; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 104 | if (grpc_tcp_trace) { |
Craig Tiller | c027e77 | 2016-05-03 16:27:00 -0700 | [diff] [blame] | 105 | const char *str = grpc_error_string(error); |
| 106 | gpr_log(GPR_DEBUG, "CLIENT_CONNECT: %s: on_alarm: error=%s", ac->addr_str, |
| 107 | str); |
| 108 | grpc_error_free_string(str); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 109 | } |
| 110 | gpr_mu_lock(&ac->mu); |
| 111 | if (ac->fd != NULL) { |
| 112 | grpc_fd_shutdown(exec_ctx, ac->fd); |
| 113 | } |
ctiller | 58393c2 | 2015-01-07 14:03:30 -0800 | [diff] [blame] | 114 | done = (--ac->refs == 0); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 115 | gpr_mu_unlock(&ac->mu); |
| 116 | if (done) { |
| 117 | gpr_mu_destroy(&ac->mu); |
| 118 | gpr_free(ac->addr_str); |
Craig Tiller | 8695876 | 2016-09-23 12:05:34 -0700 | [diff] [blame] | 119 | grpc_channel_args_destroy(ac->channel_args); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 120 | gpr_free(ac); |
| 121 | } |
ctiller | 58393c2 | 2015-01-07 14:03:30 -0800 | [diff] [blame] | 122 | } |
| 123 | |
Craig Tiller | 8695876 | 2016-09-23 12:05:34 -0700 | [diff] [blame] | 124 | grpc_endpoint *grpc_tcp_client_create_from_fd( |
| 125 | grpc_exec_ctx *exec_ctx, grpc_fd *fd, const grpc_channel_args *channel_args, |
| 126 | const char *addr_str) { |
| 127 | size_t tcp_read_chunk_size = GRPC_TCP_DEFAULT_READ_SLICE_SIZE; |
Craig Tiller | ef6b976 | 2016-09-28 08:37:51 -0700 | [diff] [blame] | 128 | grpc_buffer_pool *buffer_pool = grpc_buffer_pool_create(NULL); |
Craig Tiller | 8695876 | 2016-09-23 12:05:34 -0700 | [diff] [blame] | 129 | if (channel_args != NULL) { |
| 130 | for (size_t i = 0; i < channel_args->num_args; i++) { |
| 131 | if (0 == |
| 132 | strcmp(channel_args->args[i].key, GRPC_ARG_TCP_READ_CHUNK_SIZE)) { |
| 133 | grpc_integer_options options = {(int)tcp_read_chunk_size, 1, |
| 134 | 8 * 1024 * 1024}; |
| 135 | tcp_read_chunk_size = (size_t)grpc_channel_arg_get_integer( |
| 136 | &channel_args->args[i], options); |
| 137 | } else if (0 == strcmp(channel_args->args[i].key, GRPC_ARG_BUFFER_POOL)) { |
| 138 | grpc_buffer_pool_internal_unref(exec_ctx, buffer_pool); |
| 139 | buffer_pool = grpc_buffer_pool_internal_ref( |
| 140 | channel_args->args[i].value.pointer.p); |
| 141 | } |
| 142 | } |
| 143 | } |
| 144 | |
| 145 | grpc_endpoint *ep = |
| 146 | grpc_tcp_create(fd, buffer_pool, tcp_read_chunk_size, addr_str); |
| 147 | grpc_buffer_pool_internal_unref(exec_ctx, buffer_pool); |
| 148 | return ep; |
| 149 | } |
| 150 | |
Craig Tiller | c027e77 | 2016-05-03 16:27:00 -0700 | [diff] [blame] | 151 | static void on_writable(grpc_exec_ctx *exec_ctx, void *acp, grpc_error *error) { |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 152 | async_connect *ac = acp; |
| 153 | int so_error = 0; |
| 154 | socklen_t so_error_size; |
| 155 | int err; |
ctiller | 58393c2 | 2015-01-07 14:03:30 -0800 | [diff] [blame] | 156 | int done; |
Craig Tiller | d1bec03 | 2015-09-18 17:29:00 -0700 | [diff] [blame] | 157 | grpc_endpoint **ep = ac->ep; |
| 158 | grpc_closure *closure = ac->closure; |
Craig Tiller | 5553eb3 | 2015-07-21 12:28:56 -0700 | [diff] [blame] | 159 | grpc_fd *fd; |
| 160 | |
Craig Tiller | 82c63eb | 2016-05-10 15:28:01 -0700 | [diff] [blame] | 161 | GRPC_ERROR_REF(error); |
| 162 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 163 | if (grpc_tcp_trace) { |
Craig Tiller | c027e77 | 2016-05-03 16:27:00 -0700 | [diff] [blame] | 164 | const char *str = grpc_error_string(error); |
| 165 | gpr_log(GPR_DEBUG, "CLIENT_CONNECT: %s: on_writable: error=%s", |
| 166 | ac->addr_str, str); |
| 167 | grpc_error_free_string(str); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 168 | } |
Craig Tiller | 5e53ddb | 2015-09-16 10:53:15 -0700 | [diff] [blame] | 169 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 170 | gpr_mu_lock(&ac->mu); |
| 171 | GPR_ASSERT(ac->fd); |
Craig Tiller | 5553eb3 | 2015-07-21 12:28:56 -0700 | [diff] [blame] | 172 | fd = ac->fd; |
| 173 | ac->fd = NULL; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 174 | gpr_mu_unlock(&ac->mu); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 175 | |
David Garcia Quintas | f747bbc | 2015-10-04 23:09:47 -0700 | [diff] [blame] | 176 | grpc_timer_cancel(exec_ctx, &ac->alarm); |
Craig Tiller | 2620536 | 2015-07-21 08:21:57 -0700 | [diff] [blame] | 177 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 178 | gpr_mu_lock(&ac->mu); |
Mark D. Roth | e65ff11 | 2016-09-09 13:48:38 -0700 | [diff] [blame] | 179 | if (error != GRPC_ERROR_NONE) { |
Craig Tiller | 27f59af | 2016-04-28 14:19:48 -0700 | [diff] [blame] | 180 | error = |
| 181 | grpc_error_set_str(error, GRPC_ERROR_STR_OS_ERROR, "Timeout occurred"); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 182 | goto finish; |
| 183 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 184 | |
Mark D. Roth | e65ff11 | 2016-09-09 13:48:38 -0700 | [diff] [blame] | 185 | do { |
| 186 | so_error_size = sizeof(so_error); |
| 187 | err = getsockopt(grpc_fd_wrapped_fd(fd), SOL_SOCKET, SO_ERROR, &so_error, |
| 188 | &so_error_size); |
| 189 | } while (err < 0 && errno == EINTR); |
| 190 | if (err < 0) { |
| 191 | error = GRPC_OS_ERROR(errno, "getsockopt"); |
| 192 | goto finish; |
| 193 | } |
| 194 | |
| 195 | switch (so_error) { |
| 196 | case 0: |
| 197 | grpc_pollset_set_del_fd(exec_ctx, ac->interested_parties, fd); |
Craig Tiller | d88c461 | 2016-09-29 10:35:38 -0700 | [diff] [blame^] | 198 | *ep = grpc_tcp_client_create_from_fd(exec_ctx, fd, ac->channel_args, |
| 199 | +ac->addr_str); |
Mark D. Roth | e65ff11 | 2016-09-09 13:48:38 -0700 | [diff] [blame] | 200 | fd = NULL; |
| 201 | break; |
| 202 | case ENOBUFS: |
| 203 | /* We will get one of these errors if we have run out of |
| 204 | memory in the kernel for the data structures allocated |
| 205 | when you connect a socket. If this happens it is very |
| 206 | likely that if we wait a little bit then try again the |
| 207 | connection will work (since other programs or this |
| 208 | program will close their network connections and free up |
| 209 | memory). This does _not_ indicate that there is anything |
| 210 | wrong with the server we are connecting to, this is a |
| 211 | local problem. |
| 212 | |
| 213 | If you are looking at this code, then chances are that |
| 214 | your program or another program on the same computer |
| 215 | opened too many network connections. The "easy" fix: |
| 216 | don't do that! */ |
| 217 | gpr_log(GPR_ERROR, "kernel out of buffers"); |
| 218 | gpr_mu_unlock(&ac->mu); |
| 219 | grpc_fd_notify_on_write(exec_ctx, fd, &ac->write_closure); |
| 220 | return; |
| 221 | case ECONNREFUSED: |
| 222 | /* This error shouldn't happen for anything other than connect(). */ |
| 223 | error = GRPC_OS_ERROR(so_error, "connect"); |
| 224 | break; |
| 225 | default: |
| 226 | /* We don't really know which syscall triggered the problem here, |
| 227 | so punt by reporting getsockopt(). */ |
| 228 | error = GRPC_OS_ERROR(so_error, "getsockopt(SO_ERROR)"); |
| 229 | break; |
| 230 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 231 | |
ctiller | 58393c2 | 2015-01-07 14:03:30 -0800 | [diff] [blame] | 232 | finish: |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 233 | if (fd != NULL) { |
| 234 | grpc_pollset_set_del_fd(exec_ctx, ac->interested_parties, fd); |
yang-g | 5d85037 | 2015-12-01 10:32:28 -0800 | [diff] [blame] | 235 | grpc_fd_orphan(exec_ctx, fd, NULL, NULL, "tcp_client_orphan"); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 236 | fd = NULL; |
| 237 | } |
ctiller | 58393c2 | 2015-01-07 14:03:30 -0800 | [diff] [blame] | 238 | done = (--ac->refs == 0); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 239 | gpr_mu_unlock(&ac->mu); |
Craig Tiller | 27f59af | 2016-04-28 14:19:48 -0700 | [diff] [blame] | 240 | if (error != GRPC_ERROR_NONE) { |
| 241 | error = grpc_error_set_str(error, GRPC_ERROR_STR_DESCRIPTION, |
| 242 | "Failed to connect to remote host"); |
| 243 | error = |
| 244 | grpc_error_set_str(error, GRPC_ERROR_STR_TARGET_ADDRESS, ac->addr_str); |
| 245 | } |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 246 | if (done) { |
| 247 | gpr_mu_destroy(&ac->mu); |
| 248 | gpr_free(ac->addr_str); |
Craig Tiller | 287928c | 2016-09-23 16:04:30 -0700 | [diff] [blame] | 249 | grpc_channel_args_destroy(ac->channel_args); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 250 | gpr_free(ac); |
| 251 | } |
Craig Tiller | 332f1b3 | 2016-05-24 13:21:21 -0700 | [diff] [blame] | 252 | grpc_exec_ctx_sched(exec_ctx, closure, error, NULL); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 253 | } |
| 254 | |
Craig Tiller | e628261 | 2016-04-13 14:14:34 -0700 | [diff] [blame] | 255 | static void tcp_client_connect_impl(grpc_exec_ctx *exec_ctx, |
| 256 | grpc_closure *closure, grpc_endpoint **ep, |
| 257 | grpc_pollset_set *interested_parties, |
Craig Tiller | 8695876 | 2016-09-23 12:05:34 -0700 | [diff] [blame] | 258 | const grpc_channel_args *channel_args, |
Craig Tiller | e628261 | 2016-04-13 14:14:34 -0700 | [diff] [blame] | 259 | const struct sockaddr *addr, |
| 260 | size_t addr_len, gpr_timespec deadline) { |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 261 | int fd; |
| 262 | grpc_dualstack_mode dsmode; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 263 | int err; |
| 264 | async_connect *ac; |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 265 | struct sockaddr_in6 addr6_v4mapped; |
| 266 | struct sockaddr_in addr4_copy; |
Craig Tiller | 9bcc751 | 2015-05-11 14:59:48 -0700 | [diff] [blame] | 267 | grpc_fd *fdobj; |
Craig Tiller | fa275a9 | 2015-06-01 13:55:54 -0700 | [diff] [blame] | 268 | char *name; |
| 269 | char *addr_str; |
Craig Tiller | 27f59af | 2016-04-28 14:19:48 -0700 | [diff] [blame] | 270 | grpc_error *error; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 271 | |
Craig Tiller | d1bec03 | 2015-09-18 17:29:00 -0700 | [diff] [blame] | 272 | *ep = NULL; |
| 273 | |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 274 | /* Use dualstack sockets where available. */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 275 | if (grpc_sockaddr_to_v4mapped(addr, &addr6_v4mapped)) { |
| 276 | addr = (const struct sockaddr *)&addr6_v4mapped; |
| 277 | addr_len = sizeof(addr6_v4mapped); |
| 278 | } |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 279 | |
Craig Tiller | 27f59af | 2016-04-28 14:19:48 -0700 | [diff] [blame] | 280 | error = grpc_create_dualstack_socket(addr, SOCK_STREAM, 0, &dsmode, &fd); |
| 281 | if (error != GRPC_ERROR_NONE) { |
Craig Tiller | 332f1b3 | 2016-05-24 13:21:21 -0700 | [diff] [blame] | 282 | grpc_exec_ctx_sched(exec_ctx, closure, error, NULL); |
Craig Tiller | 27f59af | 2016-04-28 14:19:48 -0700 | [diff] [blame] | 283 | return; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 284 | } |
| 285 | if (dsmode == GRPC_DSMODE_IPV4) { |
| 286 | /* If we got an AF_INET socket, map the address back to IPv4. */ |
| 287 | GPR_ASSERT(grpc_sockaddr_is_v4mapped(addr, &addr4_copy)); |
| 288 | addr = (struct sockaddr *)&addr4_copy; |
| 289 | addr_len = sizeof(addr4_copy); |
| 290 | } |
Craig Tiller | 27f59af | 2016-04-28 14:19:48 -0700 | [diff] [blame] | 291 | if ((error = prepare_socket(addr, fd)) != GRPC_ERROR_NONE) { |
Craig Tiller | 332f1b3 | 2016-05-24 13:21:21 -0700 | [diff] [blame] | 292 | grpc_exec_ctx_sched(exec_ctx, closure, error, NULL); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 293 | return; |
| 294 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 295 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 296 | do { |
| 297 | GPR_ASSERT(addr_len < ~(socklen_t)0); |
| 298 | err = connect(fd, addr, (socklen_t)addr_len); |
| 299 | } while (err < 0 && errno == EINTR); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 300 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 301 | addr_str = grpc_sockaddr_to_uri(addr); |
| 302 | gpr_asprintf(&name, "tcp-client:%s", addr_str); |
Craig Tiller | fa275a9 | 2015-06-01 13:55:54 -0700 | [diff] [blame] | 303 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 304 | fdobj = grpc_fd_create(fd, name); |
Craig Tiller | 9bcc751 | 2015-05-11 14:59:48 -0700 | [diff] [blame] | 305 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 306 | if (err >= 0) { |
Craig Tiller | 8695876 | 2016-09-23 12:05:34 -0700 | [diff] [blame] | 307 | *ep = |
| 308 | grpc_tcp_client_create_from_fd(exec_ctx, fdobj, channel_args, addr_str); |
Craig Tiller | 332f1b3 | 2016-05-24 13:21:21 -0700 | [diff] [blame] | 309 | grpc_exec_ctx_sched(exec_ctx, closure, GRPC_ERROR_NONE, NULL); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 310 | goto done; |
| 311 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 312 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 313 | if (errno != EWOULDBLOCK && errno != EINPROGRESS) { |
yang-g | 5d85037 | 2015-12-01 10:32:28 -0800 | [diff] [blame] | 314 | grpc_fd_orphan(exec_ctx, fdobj, NULL, NULL, "tcp_client_connect_error"); |
Craig Tiller | 332f1b3 | 2016-05-24 13:21:21 -0700 | [diff] [blame] | 315 | grpc_exec_ctx_sched(exec_ctx, closure, GRPC_OS_ERROR(errno, "connect"), |
Craig Tiller | 77c983d | 2016-05-24 13:23:14 -0700 | [diff] [blame] | 316 | NULL); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 317 | goto done; |
| 318 | } |
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 | grpc_pollset_set_add_fd(exec_ctx, interested_parties, fdobj); |
Craig Tiller | 4b678bd | 2015-06-02 16:12:24 -0700 | [diff] [blame] | 321 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 322 | ac = gpr_malloc(sizeof(async_connect)); |
Craig Tiller | d1bec03 | 2015-09-18 17:29:00 -0700 | [diff] [blame] | 323 | ac->closure = closure; |
| 324 | ac->ep = ep; |
Craig Tiller | 9bcc751 | 2015-05-11 14:59:48 -0700 | [diff] [blame] | 325 | ac->fd = fdobj; |
Craig Tiller | b4973682 | 2015-06-30 08:15:08 -0700 | [diff] [blame] | 326 | ac->interested_parties = interested_parties; |
Craig Tiller | 1b22b9d | 2015-07-20 13:42:22 -0700 | [diff] [blame] | 327 | ac->addr_str = addr_str; |
| 328 | addr_str = NULL; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 329 | gpr_mu_init(&ac->mu); |
ctiller | 58393c2 | 2015-01-07 14:03:30 -0800 | [diff] [blame] | 330 | ac->refs = 2; |
Craig Tiller | 0fcd53c | 2015-02-18 15:10:53 -0800 | [diff] [blame] | 331 | ac->write_closure.cb = on_writable; |
| 332 | ac->write_closure.cb_arg = ac; |
Craig Tiller | 8695876 | 2016-09-23 12:05:34 -0700 | [diff] [blame] | 333 | ac->channel_args = grpc_channel_args_copy(channel_args); |
ctiller | 58393c2 | 2015-01-07 14:03:30 -0800 | [diff] [blame] | 334 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 335 | if (grpc_tcp_trace) { |
| 336 | gpr_log(GPR_DEBUG, "CLIENT_CONNECT: %s: asynchronously connecting", |
| 337 | ac->addr_str); |
| 338 | } |
Craig Tiller | 5e53ddb | 2015-09-16 10:53:15 -0700 | [diff] [blame] | 339 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 340 | gpr_mu_lock(&ac->mu); |
David Garcia Quintas | f747bbc | 2015-10-04 23:09:47 -0700 | [diff] [blame] | 341 | grpc_timer_init(exec_ctx, &ac->alarm, |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 342 | gpr_convert_clock_type(deadline, GPR_CLOCK_MONOTONIC), |
| 343 | tc_on_alarm, ac, gpr_now(GPR_CLOCK_MONOTONIC)); |
| 344 | grpc_fd_notify_on_write(exec_ctx, ac->fd, &ac->write_closure); |
| 345 | gpr_mu_unlock(&ac->mu); |
Craig Tiller | fa275a9 | 2015-06-01 13:55:54 -0700 | [diff] [blame] | 346 | |
| 347 | done: |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 348 | gpr_free(name); |
| 349 | gpr_free(addr_str); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 350 | } |
Craig Tiller | 0c0b60c | 2015-01-21 15:49:28 -0800 | [diff] [blame] | 351 | |
Craig Tiller | e628261 | 2016-04-13 14:14:34 -0700 | [diff] [blame] | 352 | // overridden by api_fuzzer.c |
| 353 | void (*grpc_tcp_client_connect_impl)( |
| 354 | grpc_exec_ctx *exec_ctx, grpc_closure *closure, grpc_endpoint **ep, |
Craig Tiller | 8695876 | 2016-09-23 12:05:34 -0700 | [diff] [blame] | 355 | grpc_pollset_set *interested_parties, const grpc_channel_args *channel_args, |
Craig Tiller | e34c285 | 2016-09-23 09:43:32 -0700 | [diff] [blame] | 356 | const struct sockaddr *addr, size_t addr_len, |
| 357 | gpr_timespec deadline) = tcp_client_connect_impl; |
Craig Tiller | e628261 | 2016-04-13 14:14:34 -0700 | [diff] [blame] | 358 | |
| 359 | void grpc_tcp_client_connect(grpc_exec_ctx *exec_ctx, grpc_closure *closure, |
| 360 | grpc_endpoint **ep, |
| 361 | grpc_pollset_set *interested_parties, |
Craig Tiller | 8695876 | 2016-09-23 12:05:34 -0700 | [diff] [blame] | 362 | const grpc_channel_args *channel_args, |
Craig Tiller | e628261 | 2016-04-13 14:14:34 -0700 | [diff] [blame] | 363 | const struct sockaddr *addr, size_t addr_len, |
| 364 | gpr_timespec deadline) { |
Craig Tiller | e34c285 | 2016-09-23 09:43:32 -0700 | [diff] [blame] | 365 | grpc_tcp_client_connect_impl(exec_ctx, closure, ep, interested_parties, |
Craig Tiller | 8695876 | 2016-09-23 12:05:34 -0700 | [diff] [blame] | 366 | channel_args, addr, addr_len, deadline); |
Craig Tiller | e628261 | 2016-04-13 14:14:34 -0700 | [diff] [blame] | 367 | } |
| 368 | |
Craig Tiller | 190d360 | 2015-02-18 09:23:38 -0800 | [diff] [blame] | 369 | #endif |