Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 1 | /* |
| 2 | * |
Craig Tiller | 1948244 | 2016-01-25 09:59:20 -0800 | [diff] [blame] | 3 | * Copyright 2015-2016, 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 | |
| 34 | #include <grpc/grpc.h> |
| 35 | |
| 36 | #include <stdlib.h> |
| 37 | #include <string.h> |
| 38 | |
Craig Tiller | 9162466 | 2015-06-25 16:31:02 -0700 | [diff] [blame] | 39 | #include <grpc/support/alloc.h> |
yang-g | 074c6fc | 2015-11-05 23:14:07 -0800 | [diff] [blame] | 40 | #include <grpc/support/slice.h> |
| 41 | #include <grpc/support/slice_buffer.h> |
Craig Tiller | 9162466 | 2015-06-25 16:31:02 -0700 | [diff] [blame] | 42 | |
Hongyu Chen | e09dc78 | 2015-08-21 11:28:33 -0700 | [diff] [blame] | 43 | #include "src/core/census/grpc_filter.h" |
Craig Tiller | 9162466 | 2015-06-25 16:31:02 -0700 | [diff] [blame] | 44 | #include "src/core/channel/channel_args.h" |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 45 | #include "src/core/channel/client_channel.h" |
David Garcia Quintas | 55b4ea1 | 2015-06-16 14:27:32 -0700 | [diff] [blame] | 46 | #include "src/core/channel/compress_filter.h" |
Craig Tiller | 5945ee1 | 2015-06-27 10:36:09 -0700 | [diff] [blame] | 47 | #include "src/core/channel/http_client_filter.h" |
Craig Tiller | f5f1712 | 2015-06-25 08:47:26 -0700 | [diff] [blame] | 48 | #include "src/core/client_config/resolver_registry.h" |
Craig Tiller | 5f84c84 | 2015-06-26 16:08:21 -0700 | [diff] [blame] | 49 | #include "src/core/iomgr/tcp_client.h" |
Masood Malekghassemi | 76c3d74 | 2015-08-19 18:22:53 -0700 | [diff] [blame] | 50 | #include "src/core/surface/api_trace.h" |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 51 | #include "src/core/surface/channel.h" |
Craig Tiller | 5f84c84 | 2015-06-26 16:08:21 -0700 | [diff] [blame] | 52 | #include "src/core/transport/chttp2_transport.h" |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 53 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 54 | typedef struct { |
Craig Tiller | 9162466 | 2015-06-25 16:31:02 -0700 | [diff] [blame] | 55 | grpc_connector base; |
| 56 | gpr_refcount refs; |
Craig Tiller | 5f84c84 | 2015-06-26 16:08:21 -0700 | [diff] [blame] | 57 | |
Craig Tiller | 3382511 | 2015-09-18 07:44:19 -0700 | [diff] [blame] | 58 | grpc_closure *notify; |
Craig Tiller | 04c5d4b | 2015-06-26 17:21:41 -0700 | [diff] [blame] | 59 | grpc_connect_in_args args; |
| 60 | grpc_connect_out_args *result; |
yang-g | 074c6fc | 2015-11-05 23:14:07 -0800 | [diff] [blame] | 61 | grpc_closure initial_string_sent; |
| 62 | gpr_slice_buffer initial_string_buffer; |
Craig Tiller | dfff1b8 | 2015-09-21 14:39:57 -0700 | [diff] [blame] | 63 | |
| 64 | grpc_endpoint *tcp; |
| 65 | |
Craig Tiller | dfff1b8 | 2015-09-21 14:39:57 -0700 | [diff] [blame] | 66 | grpc_closure connected; |
Craig Tiller | 9162466 | 2015-06-25 16:31:02 -0700 | [diff] [blame] | 67 | } connector; |
| 68 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 69 | static void connector_ref(grpc_connector *con) { |
| 70 | connector *c = (connector *)con; |
| 71 | gpr_ref(&c->refs); |
Craig Tiller | 9162466 | 2015-06-25 16:31:02 -0700 | [diff] [blame] | 72 | } |
| 73 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 74 | static void connector_unref(grpc_exec_ctx *exec_ctx, grpc_connector *con) { |
| 75 | connector *c = (connector *)con; |
| 76 | if (gpr_unref(&c->refs)) { |
yang-g | 074c6fc | 2015-11-05 23:14:07 -0800 | [diff] [blame] | 77 | /* c->initial_string_buffer does not need to be destroyed */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 78 | gpr_free(c); |
| 79 | } |
Craig Tiller | 9162466 | 2015-06-25 16:31:02 -0700 | [diff] [blame] | 80 | } |
| 81 | |
yang-g | f8843fb | 2015-11-21 12:33:22 -0800 | [diff] [blame] | 82 | static void on_initial_connect_string_sent(grpc_exec_ctx *exec_ctx, void *arg, |
Craig Tiller | 6c39686 | 2016-01-28 13:53:40 -0800 | [diff] [blame] | 83 | bool success) { |
yang-g | f8843fb | 2015-11-21 12:33:22 -0800 | [diff] [blame] | 84 | connector_unref(exec_ctx, arg); |
| 85 | } |
yang-g | 074c6fc | 2015-11-05 23:14:07 -0800 | [diff] [blame] | 86 | |
Craig Tiller | 6c39686 | 2016-01-28 13:53:40 -0800 | [diff] [blame] | 87 | static void connected(grpc_exec_ctx *exec_ctx, void *arg, bool success) { |
Craig Tiller | 5f84c84 | 2015-06-26 16:08:21 -0700 | [diff] [blame] | 88 | connector *c = arg; |
Craig Tiller | 3382511 | 2015-09-18 07:44:19 -0700 | [diff] [blame] | 89 | grpc_closure *notify; |
Craig Tiller | dfff1b8 | 2015-09-21 14:39:57 -0700 | [diff] [blame] | 90 | grpc_endpoint *tcp = c->tcp; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 91 | if (tcp != NULL) { |
yang-g | 074c6fc | 2015-11-05 23:14:07 -0800 | [diff] [blame] | 92 | if (!GPR_SLICE_IS_EMPTY(c->args.initial_connect_string)) { |
yang-g | f8843fb | 2015-11-21 12:33:22 -0800 | [diff] [blame] | 93 | grpc_closure_init(&c->initial_string_sent, on_initial_connect_string_sent, |
| 94 | c); |
yang-g | 074c6fc | 2015-11-05 23:14:07 -0800 | [diff] [blame] | 95 | gpr_slice_buffer_init(&c->initial_string_buffer); |
| 96 | gpr_slice_buffer_add(&c->initial_string_buffer, |
| 97 | c->args.initial_connect_string); |
yang-g | f8843fb | 2015-11-21 12:33:22 -0800 | [diff] [blame] | 98 | connector_ref(arg); |
yang-g | 074c6fc | 2015-11-05 23:14:07 -0800 | [diff] [blame] | 99 | grpc_endpoint_write(exec_ctx, tcp, &c->initial_string_buffer, |
| 100 | &c->initial_string_sent); |
| 101 | } |
Craig Tiller | b2b4261 | 2015-11-20 12:02:17 -0800 | [diff] [blame] | 102 | c->result->transport = |
| 103 | grpc_create_chttp2_transport(exec_ctx, c->args.channel_args, tcp, 1); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 104 | grpc_chttp2_transport_start_reading(exec_ctx, c->result->transport, NULL, |
| 105 | 0); |
| 106 | GPR_ASSERT(c->result->transport); |
Julien Boeuf | 5b19403 | 2015-12-17 16:00:51 -0800 | [diff] [blame] | 107 | c->result->channel_args = c->args.channel_args; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 108 | } else { |
| 109 | memset(c->result, 0, sizeof(*c->result)); |
| 110 | } |
Craig Tiller | 5f84c84 | 2015-06-26 16:08:21 -0700 | [diff] [blame] | 111 | notify = c->notify; |
| 112 | c->notify = NULL; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 113 | notify->cb(exec_ctx, notify->cb_arg, 1); |
Craig Tiller | 5f84c84 | 2015-06-26 16:08:21 -0700 | [diff] [blame] | 114 | } |
| 115 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 116 | static void connector_shutdown(grpc_exec_ctx *exec_ctx, grpc_connector *con) {} |
Craig Tiller | 131f6ed | 2015-09-15 08:20:20 -0700 | [diff] [blame] | 117 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 118 | static void connector_connect(grpc_exec_ctx *exec_ctx, grpc_connector *con, |
| 119 | const grpc_connect_in_args *args, |
| 120 | grpc_connect_out_args *result, |
| 121 | grpc_closure *notify) { |
| 122 | connector *c = (connector *)con; |
| 123 | GPR_ASSERT(c->notify == NULL); |
| 124 | GPR_ASSERT(notify->cb); |
Craig Tiller | 5f84c84 | 2015-06-26 16:08:21 -0700 | [diff] [blame] | 125 | c->notify = notify; |
Craig Tiller | 04c5d4b | 2015-06-26 17:21:41 -0700 | [diff] [blame] | 126 | c->args = *args; |
| 127 | c->result = result; |
Craig Tiller | dfff1b8 | 2015-09-21 14:39:57 -0700 | [diff] [blame] | 128 | c->tcp = NULL; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 129 | grpc_closure_init(&c->connected, connected, c); |
| 130 | grpc_tcp_client_connect(exec_ctx, &c->connected, &c->tcp, |
| 131 | args->interested_parties, args->addr, args->addr_len, |
| 132 | args->deadline); |
Craig Tiller | f7afa1f | 2015-06-26 09:02:20 -0700 | [diff] [blame] | 133 | } |
| 134 | |
Craig Tiller | 079a11b | 2015-06-30 10:07:15 -0700 | [diff] [blame] | 135 | static const grpc_connector_vtable connector_vtable = { |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 136 | connector_ref, connector_unref, connector_shutdown, connector_connect}; |
Craig Tiller | f7afa1f | 2015-06-26 09:02:20 -0700 | [diff] [blame] | 137 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 138 | typedef struct { |
Craig Tiller | 5f84c84 | 2015-06-26 16:08:21 -0700 | [diff] [blame] | 139 | grpc_subchannel_factory base; |
| 140 | gpr_refcount refs; |
Craig Tiller | d9a5088 | 2015-06-29 15:57:36 -0700 | [diff] [blame] | 141 | grpc_channel_args *merge_args; |
Craig Tiller | 1ada6ad | 2015-07-16 16:19:14 -0700 | [diff] [blame] | 142 | grpc_channel *master; |
Craig Tiller | 5f84c84 | 2015-06-26 16:08:21 -0700 | [diff] [blame] | 143 | } subchannel_factory; |
Craig Tiller | f7afa1f | 2015-06-26 09:02:20 -0700 | [diff] [blame] | 144 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 145 | static void subchannel_factory_ref(grpc_subchannel_factory *scf) { |
| 146 | subchannel_factory *f = (subchannel_factory *)scf; |
| 147 | gpr_ref(&f->refs); |
Craig Tiller | 5f84c84 | 2015-06-26 16:08:21 -0700 | [diff] [blame] | 148 | } |
| 149 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 150 | static void subchannel_factory_unref(grpc_exec_ctx *exec_ctx, |
| 151 | grpc_subchannel_factory *scf) { |
| 152 | subchannel_factory *f = (subchannel_factory *)scf; |
| 153 | if (gpr_unref(&f->refs)) { |
| 154 | GRPC_CHANNEL_INTERNAL_UNREF(exec_ctx, f->master, "subchannel_factory"); |
| 155 | grpc_channel_args_destroy(f->merge_args); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 156 | gpr_free(f); |
| 157 | } |
Craig Tiller | 5f84c84 | 2015-06-26 16:08:21 -0700 | [diff] [blame] | 158 | } |
Craig Tiller | f7afa1f | 2015-06-26 09:02:20 -0700 | [diff] [blame] | 159 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 160 | static grpc_subchannel *subchannel_factory_create_subchannel( |
| 161 | grpc_exec_ctx *exec_ctx, grpc_subchannel_factory *scf, |
| 162 | grpc_subchannel_args *args) { |
| 163 | subchannel_factory *f = (subchannel_factory *)scf; |
| 164 | connector *c = gpr_malloc(sizeof(*c)); |
| 165 | grpc_channel_args *final_args = |
| 166 | grpc_channel_args_merge(args->args, f->merge_args); |
Craig Tiller | f7afa1f | 2015-06-26 09:02:20 -0700 | [diff] [blame] | 167 | grpc_subchannel *s; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 168 | memset(c, 0, sizeof(*c)); |
Craig Tiller | 9162466 | 2015-06-25 16:31:02 -0700 | [diff] [blame] | 169 | c->base.vtable = &connector_vtable; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 170 | gpr_ref_init(&c->refs, 1); |
Craig Tiller | d9a5088 | 2015-06-29 15:57:36 -0700 | [diff] [blame] | 171 | args->args = final_args; |
Craig Tiller | 8cdba66 | 2016-01-22 20:01:55 -0800 | [diff] [blame] | 172 | s = grpc_subchannel_create(exec_ctx, &c->base, args); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 173 | grpc_connector_unref(exec_ctx, &c->base); |
| 174 | grpc_channel_args_destroy(final_args); |
Craig Tiller | f7afa1f | 2015-06-26 09:02:20 -0700 | [diff] [blame] | 175 | return s; |
Craig Tiller | 9162466 | 2015-06-25 16:31:02 -0700 | [diff] [blame] | 176 | } |
| 177 | |
Craig Tiller | 079a11b | 2015-06-30 10:07:15 -0700 | [diff] [blame] | 178 | static const grpc_subchannel_factory_vtable subchannel_factory_vtable = { |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 179 | subchannel_factory_ref, subchannel_factory_unref, |
| 180 | subchannel_factory_create_subchannel}; |
Craig Tiller | 9162466 | 2015-06-25 16:31:02 -0700 | [diff] [blame] | 181 | |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 182 | /* Create a client channel: |
| 183 | Asynchronously: - resolve target |
| 184 | - connect to it (trying alternatives as presented) |
| 185 | - perform handshakes */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 186 | grpc_channel *grpc_insecure_channel_create(const char *target, |
| 187 | const grpc_channel_args *args, |
| 188 | void *reserved) { |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 189 | grpc_channel *channel = NULL; |
Craig Tiller | f5f1712 | 2015-06-25 08:47:26 -0700 | [diff] [blame] | 190 | grpc_resolver *resolver; |
Craig Tiller | 5f84c84 | 2015-06-26 16:08:21 -0700 | [diff] [blame] | 191 | subchannel_factory *f; |
Craig Tiller | f5768a6 | 2015-09-22 10:54:34 -0700 | [diff] [blame] | 192 | grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
Masood Malekghassemi | 76c3d74 | 2015-08-19 18:22:53 -0700 | [diff] [blame] | 193 | GRPC_API_TRACE( |
| 194 | "grpc_insecure_channel_create(target=%p, args=%p, reserved=%p)", 3, |
| 195 | (target, args, reserved)); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 196 | GPR_ASSERT(!reserved); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 197 | |
Craig Tiller | b2b4261 | 2015-11-20 12:02:17 -0800 | [diff] [blame] | 198 | channel = |
Craig Tiller | 178edfa | 2016-02-17 20:54:46 -0800 | [diff] [blame^] | 199 | grpc_channel_create(&exec_ctx, target, args, GRPC_CLIENT_CHANNEL, NULL); |
Craig Tiller | 1ada6ad | 2015-07-16 16:19:14 -0700 | [diff] [blame] | 200 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 201 | f = gpr_malloc(sizeof(*f)); |
Craig Tiller | 5f84c84 | 2015-06-26 16:08:21 -0700 | [diff] [blame] | 202 | f->base.vtable = &subchannel_factory_vtable; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 203 | gpr_ref_init(&f->refs, 1); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 204 | f->merge_args = grpc_channel_args_copy(args); |
Craig Tiller | 1ada6ad | 2015-07-16 16:19:14 -0700 | [diff] [blame] | 205 | f->master = channel; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 206 | GRPC_CHANNEL_INTERNAL_REF(f->master, "subchannel_factory"); |
| 207 | resolver = grpc_resolver_create(target, &f->base); |
| 208 | if (!resolver) { |
yang-g | c0ed509 | 2015-12-09 08:48:08 -0800 | [diff] [blame] | 209 | GRPC_CHANNEL_INTERNAL_UNREF(&exec_ctx, f->master, "subchannel_factory"); |
| 210 | grpc_subchannel_factory_unref(&exec_ctx, &f->base); |
| 211 | grpc_exec_ctx_finish(&exec_ctx); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 212 | return NULL; |
| 213 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 214 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 215 | grpc_client_channel_set_resolver( |
| 216 | &exec_ctx, grpc_channel_get_channel_stack(channel), resolver); |
| 217 | GRPC_RESOLVER_UNREF(&exec_ctx, resolver, "create"); |
| 218 | grpc_subchannel_factory_unref(&exec_ctx, &f->base); |
Craig Tiller | dfff1b8 | 2015-09-21 14:39:57 -0700 | [diff] [blame] | 219 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 220 | grpc_exec_ctx_finish(&exec_ctx); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 221 | |
| 222 | return channel; |
Craig Tiller | 190d360 | 2015-02-18 09:23:38 -0800 | [diff] [blame] | 223 | } |