murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 1 | /* |
| 2 | * |
| 3 | * Copyright 2016, Google Inc. |
| 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 "src/core/lib/iomgr/port.h" |
| 35 | |
| 36 | #ifdef GRPC_UV |
| 37 | |
| 38 | #include <limits.h> |
| 39 | #include <string.h> |
| 40 | |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 41 | #include <grpc/slice_buffer.h> |
| 42 | |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 43 | #include <grpc/support/alloc.h> |
| 44 | #include <grpc/support/log.h> |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 45 | #include <grpc/support/string_util.h> |
| 46 | |
| 47 | #include "src/core/lib/iomgr/error.h" |
| 48 | #include "src/core/lib/iomgr/network_status_tracker.h" |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 49 | #include "src/core/lib/iomgr/resource_quota.h" |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 50 | #include "src/core/lib/iomgr/tcp_uv.h" |
Craig Tiller | 7c70b6c | 2017-01-23 07:48:42 -0800 | [diff] [blame] | 51 | #include "src/core/lib/slice/slice_internal.h" |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 52 | #include "src/core/lib/slice/slice_string_helpers.h" |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 53 | #include "src/core/lib/support/string.h" |
| 54 | |
| 55 | int grpc_tcp_trace = 0; |
| 56 | |
| 57 | typedef struct { |
| 58 | grpc_endpoint base; |
| 59 | gpr_refcount refcount; |
| 60 | |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 61 | uv_write_t write_req; |
| 62 | uv_shutdown_t shutdown_req; |
| 63 | |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 64 | uv_tcp_t *handle; |
| 65 | |
| 66 | grpc_closure *read_cb; |
| 67 | grpc_closure *write_cb; |
| 68 | |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 69 | grpc_slice read_slice; |
| 70 | grpc_slice_buffer *read_slices; |
| 71 | grpc_slice_buffer *write_slices; |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 72 | uv_buf_t *write_buffers; |
| 73 | |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 74 | grpc_resource_user *resource_user; |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 75 | |
murgatroid99 | 2c287ca | 2016-10-07 09:55:35 -0700 | [diff] [blame] | 76 | bool shutting_down; |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 77 | |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 78 | char *peer_string; |
| 79 | grpc_pollset *pollset; |
| 80 | } grpc_tcp; |
| 81 | |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 82 | static void tcp_free(grpc_exec_ctx *exec_ctx, grpc_tcp *tcp) { |
| 83 | grpc_resource_user_unref(exec_ctx, tcp->resource_user); |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 84 | gpr_free(tcp); |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 85 | } |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 86 | |
| 87 | /*#define GRPC_TCP_REFCOUNT_DEBUG*/ |
| 88 | #ifdef GRPC_TCP_REFCOUNT_DEBUG |
murgatroid99 | 2e01234 | 2016-11-10 18:24:08 -0800 | [diff] [blame] | 89 | #define TCP_UNREF(exec_ctx, tcp, reason) \ |
| 90 | tcp_unref((exec_ctx), (tcp), (reason), __FILE__, __LINE__) |
| 91 | #define TCP_REF(tcp, reason) \ |
| 92 | tcp_ref((exec_ctx), (tcp), (reason), __FILE__, __LINE__) |
| 93 | static void tcp_unref(grpc_exec_ctx *exec_ctx, grpc_tcp *tcp, |
| 94 | const char *reason, const char *file, int line) { |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 95 | gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG, "TCP unref %p : %s %d -> %d", tcp, |
| 96 | reason, tcp->refcount.count, tcp->refcount.count - 1); |
| 97 | if (gpr_unref(&tcp->refcount)) { |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 98 | tcp_free(exec_ctx, tcp); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 99 | } |
| 100 | } |
| 101 | |
| 102 | static void tcp_ref(grpc_tcp *tcp, const char *reason, const char *file, |
| 103 | int line) { |
| 104 | gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG, "TCP ref %p : %s %d -> %d", tcp, |
| 105 | reason, tcp->refcount.count, tcp->refcount.count + 1); |
| 106 | gpr_ref(&tcp->refcount); |
| 107 | } |
| 108 | #else |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 109 | #define TCP_UNREF(exec_ctx, tcp, reason) tcp_unref((exec_ctx), (tcp)) |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 110 | #define TCP_REF(tcp, reason) tcp_ref((tcp)) |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 111 | static void tcp_unref(grpc_exec_ctx *exec_ctx, grpc_tcp *tcp) { |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 112 | if (gpr_unref(&tcp->refcount)) { |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 113 | tcp_free(exec_ctx, tcp); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 114 | } |
| 115 | } |
| 116 | |
| 117 | static void tcp_ref(grpc_tcp *tcp) { gpr_ref(&tcp->refcount); } |
| 118 | #endif |
| 119 | |
murgatroid99 | 1191b72 | 2017-02-08 11:56:52 -0800 | [diff] [blame] | 120 | static void uv_close_callback(uv_handle_t *handle) { |
| 121 | grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
| 122 | grpc_tcp *tcp = handle->data; |
| 123 | TCP_UNREF(&exec_ctx, tcp, "destroy"); |
| 124 | grpc_exec_ctx_finish(&exec_ctx); |
| 125 | } |
| 126 | |
murgatroid99 | dedb923 | 2016-09-26 13:54:04 -0700 | [diff] [blame] | 127 | static void alloc_uv_buf(uv_handle_t *handle, size_t suggested_size, |
| 128 | uv_buf_t *buf) { |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 129 | grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 130 | grpc_tcp *tcp = handle->data; |
| 131 | (void)suggested_size; |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 132 | tcp->read_slice = grpc_resource_user_slice_malloc( |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 133 | &exec_ctx, tcp->resource_user, GRPC_TCP_DEFAULT_READ_SLICE_SIZE); |
Craig Tiller | 618e67d | 2016-10-26 21:08:10 -0700 | [diff] [blame] | 134 | buf->base = (char *)GRPC_SLICE_START_PTR(tcp->read_slice); |
| 135 | buf->len = GRPC_SLICE_LENGTH(tcp->read_slice); |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 136 | grpc_exec_ctx_finish(&exec_ctx); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 137 | } |
| 138 | |
murgatroid99 | dedb923 | 2016-09-26 13:54:04 -0700 | [diff] [blame] | 139 | static void read_callback(uv_stream_t *stream, ssize_t nread, |
| 140 | const uv_buf_t *buf) { |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 141 | grpc_slice sub; |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 142 | grpc_error *error; |
| 143 | grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
| 144 | grpc_tcp *tcp = stream->data; |
| 145 | grpc_closure *cb = tcp->read_cb; |
| 146 | if (nread == 0) { |
| 147 | // Nothing happened. Wait for the next callback |
| 148 | return; |
| 149 | } |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 150 | TCP_UNREF(&exec_ctx, tcp, "read"); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 151 | tcp->read_cb = NULL; |
| 152 | // TODO(murgatroid99): figure out what the return value here means |
| 153 | uv_read_stop(stream); |
| 154 | if (nread == UV_EOF) { |
| 155 | error = GRPC_ERROR_CREATE("EOF"); |
| 156 | } else if (nread > 0) { |
| 157 | // Successful read |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 158 | sub = grpc_slice_sub_no_ref(tcp->read_slice, 0, (size_t)nread); |
| 159 | grpc_slice_buffer_add(tcp->read_slices, sub); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 160 | error = GRPC_ERROR_NONE; |
| 161 | if (grpc_tcp_trace) { |
| 162 | size_t i; |
| 163 | const char *str = grpc_error_string(error); |
| 164 | gpr_log(GPR_DEBUG, "read: error=%s", str); |
Craig Tiller | 7c70b6c | 2017-01-23 07:48:42 -0800 | [diff] [blame] | 165 | |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 166 | for (i = 0; i < tcp->read_slices->count; i++) { |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 167 | char *dump = grpc_dump_slice(tcp->read_slices->slices[i], |
murgatroid99 | 2e01234 | 2016-11-10 18:24:08 -0800 | [diff] [blame] | 168 | GPR_DUMP_HEX | GPR_DUMP_ASCII); |
murgatroid99 | dedb923 | 2016-09-26 13:54:04 -0700 | [diff] [blame] | 169 | gpr_log(GPR_DEBUG, "READ %p (peer=%s): %s", tcp, tcp->peer_string, |
| 170 | dump); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 171 | gpr_free(dump); |
| 172 | } |
| 173 | } |
| 174 | } else { |
| 175 | // nread < 0: Error |
| 176 | error = GRPC_ERROR_CREATE("TCP Read failed"); |
| 177 | } |
Craig Tiller | 91031da | 2016-12-28 15:44:25 -0800 | [diff] [blame] | 178 | grpc_closure_sched(&exec_ctx, cb, error); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 179 | grpc_exec_ctx_finish(&exec_ctx); |
| 180 | } |
| 181 | |
| 182 | static void uv_endpoint_read(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep, |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 183 | grpc_slice_buffer *read_slices, grpc_closure *cb) { |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 184 | grpc_tcp *tcp = (grpc_tcp *)ep; |
| 185 | int status; |
| 186 | grpc_error *error = GRPC_ERROR_NONE; |
| 187 | GPR_ASSERT(tcp->read_cb == NULL); |
| 188 | tcp->read_cb = cb; |
| 189 | tcp->read_slices = read_slices; |
Craig Tiller | ab7b2d8 | 2016-12-07 07:26:34 -0800 | [diff] [blame] | 190 | grpc_slice_buffer_reset_and_unref_internal(exec_ctx, read_slices); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 191 | TCP_REF(tcp, "read"); |
| 192 | // TODO(murgatroid99): figure out what the return value here means |
murgatroid99 | dedb923 | 2016-09-26 13:54:04 -0700 | [diff] [blame] | 193 | status = |
| 194 | uv_read_start((uv_stream_t *)tcp->handle, alloc_uv_buf, read_callback); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 195 | if (status != 0) { |
| 196 | error = GRPC_ERROR_CREATE("TCP Read failed at start"); |
murgatroid99 | dedb923 | 2016-09-26 13:54:04 -0700 | [diff] [blame] | 197 | error = |
| 198 | grpc_error_set_str(error, GRPC_ERROR_STR_OS_ERROR, uv_strerror(status)); |
Craig Tiller | 91031da | 2016-12-28 15:44:25 -0800 | [diff] [blame] | 199 | grpc_closure_sched(exec_ctx, cb, error); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 200 | } |
| 201 | if (grpc_tcp_trace) { |
| 202 | const char *str = grpc_error_string(error); |
| 203 | gpr_log(GPR_DEBUG, "Initiating read on %p: error=%s", tcp, str); |
| 204 | } |
| 205 | } |
| 206 | |
| 207 | static void write_callback(uv_write_t *req, int status) { |
| 208 | grpc_tcp *tcp = req->data; |
| 209 | grpc_error *error; |
| 210 | grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
| 211 | grpc_closure *cb = tcp->write_cb; |
| 212 | tcp->write_cb = NULL; |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 213 | TCP_UNREF(&exec_ctx, tcp, "write"); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 214 | if (status == 0) { |
| 215 | error = GRPC_ERROR_NONE; |
| 216 | } else { |
| 217 | error = GRPC_ERROR_CREATE("TCP Write failed"); |
| 218 | } |
| 219 | if (grpc_tcp_trace) { |
| 220 | const char *str = grpc_error_string(error); |
| 221 | gpr_log(GPR_DEBUG, "write complete on %p: error=%s", tcp, str); |
| 222 | } |
| 223 | gpr_free(tcp->write_buffers); |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 224 | grpc_resource_user_free(&exec_ctx, tcp->resource_user, |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 225 | sizeof(uv_buf_t) * tcp->write_slices->count); |
Craig Tiller | 91031da | 2016-12-28 15:44:25 -0800 | [diff] [blame] | 226 | grpc_closure_sched(&exec_ctx, cb, error); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 227 | grpc_exec_ctx_finish(&exec_ctx); |
| 228 | } |
| 229 | |
| 230 | static void uv_endpoint_write(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep, |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 231 | grpc_slice_buffer *write_slices, |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 232 | grpc_closure *cb) { |
| 233 | grpc_tcp *tcp = (grpc_tcp *)ep; |
| 234 | uv_buf_t *buffers; |
| 235 | unsigned int buffer_count; |
| 236 | unsigned int i; |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 237 | grpc_slice *slice; |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 238 | uv_write_t *write_req; |
| 239 | |
| 240 | if (grpc_tcp_trace) { |
murgatroid99 | c36f6ea | 2016-10-03 09:24:09 -0700 | [diff] [blame] | 241 | size_t j; |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 242 | |
murgatroid99 | c36f6ea | 2016-10-03 09:24:09 -0700 | [diff] [blame] | 243 | for (j = 0; j < write_slices->count; j++) { |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 244 | char *data = grpc_dump_slice(write_slices->slices[j], |
murgatroid99 | 2e01234 | 2016-11-10 18:24:08 -0800 | [diff] [blame] | 245 | GPR_DUMP_HEX | GPR_DUMP_ASCII); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 246 | gpr_log(GPR_DEBUG, "WRITE %p (peer=%s): %s", tcp, tcp->peer_string, data); |
| 247 | gpr_free(data); |
| 248 | } |
| 249 | } |
| 250 | |
| 251 | if (tcp->shutting_down) { |
Craig Tiller | 91031da | 2016-12-28 15:44:25 -0800 | [diff] [blame] | 252 | grpc_closure_sched(exec_ctx, cb, |
Craig Tiller | fb27cac | 2017-01-03 09:54:51 -0800 | [diff] [blame] | 253 | GRPC_ERROR_CREATE("TCP socket is shutting down")); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 254 | return; |
| 255 | } |
| 256 | |
| 257 | GPR_ASSERT(tcp->write_cb == NULL); |
| 258 | tcp->write_slices = write_slices; |
| 259 | GPR_ASSERT(tcp->write_slices->count <= UINT_MAX); |
| 260 | if (tcp->write_slices->count == 0) { |
| 261 | // No slices means we don't have to do anything, |
| 262 | // and libuv doesn't like empty writes |
Craig Tiller | 91031da | 2016-12-28 15:44:25 -0800 | [diff] [blame] | 263 | grpc_closure_sched(exec_ctx, cb, GRPC_ERROR_NONE); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 264 | return; |
| 265 | } |
| 266 | |
| 267 | tcp->write_cb = cb; |
| 268 | buffer_count = (unsigned int)tcp->write_slices->count; |
| 269 | buffers = gpr_malloc(sizeof(uv_buf_t) * buffer_count); |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 270 | grpc_resource_user_alloc(exec_ctx, tcp->resource_user, |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 271 | sizeof(uv_buf_t) * buffer_count, NULL); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 272 | for (i = 0; i < buffer_count; i++) { |
| 273 | slice = &tcp->write_slices->slices[i]; |
Craig Tiller | 618e67d | 2016-10-26 21:08:10 -0700 | [diff] [blame] | 274 | buffers[i].base = (char *)GRPC_SLICE_START_PTR(*slice); |
| 275 | buffers[i].len = GRPC_SLICE_LENGTH(*slice); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 276 | } |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 277 | tcp->write_buffers = buffers; |
| 278 | write_req = &tcp->write_req; |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 279 | write_req->data = tcp; |
| 280 | TCP_REF(tcp, "write"); |
| 281 | // TODO(murgatroid99): figure out what the return value here means |
| 282 | uv_write(write_req, (uv_stream_t *)tcp->handle, buffers, buffer_count, |
| 283 | write_callback); |
| 284 | } |
| 285 | |
| 286 | static void uv_add_to_pollset(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep, |
| 287 | grpc_pollset *pollset) { |
| 288 | // No-op. We're ignoring pollsets currently |
murgatroid99 | dedb923 | 2016-09-26 13:54:04 -0700 | [diff] [blame] | 289 | (void)exec_ctx; |
| 290 | (void)ep; |
| 291 | (void)pollset; |
| 292 | grpc_tcp *tcp = (grpc_tcp *)ep; |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 293 | tcp->pollset = pollset; |
| 294 | } |
| 295 | |
| 296 | static void uv_add_to_pollset_set(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep, |
| 297 | grpc_pollset_set *pollset) { |
| 298 | // No-op. We're ignoring pollsets currently |
murgatroid99 | dedb923 | 2016-09-26 13:54:04 -0700 | [diff] [blame] | 299 | (void)exec_ctx; |
| 300 | (void)ep; |
| 301 | (void)pollset; |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 302 | } |
| 303 | |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 304 | static void shutdown_callback(uv_shutdown_t *req, int status) {} |
| 305 | |
Craig Tiller | 22f13fb | 2017-01-27 11:43:25 -0800 | [diff] [blame] | 306 | static void uv_endpoint_shutdown(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep, |
| 307 | grpc_error *why) { |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 308 | grpc_tcp *tcp = (grpc_tcp *)ep; |
murgatroid99 | 2c287ca | 2016-10-07 09:55:35 -0700 | [diff] [blame] | 309 | if (!tcp->shutting_down) { |
| 310 | tcp->shutting_down = true; |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 311 | uv_shutdown_t *req = &tcp->shutdown_req; |
murgatroid99 | 2c287ca | 2016-10-07 09:55:35 -0700 | [diff] [blame] | 312 | uv_shutdown(req, (uv_stream_t *)tcp->handle, shutdown_callback); |
| 313 | } |
Craig Tiller | 22f13fb | 2017-01-27 11:43:25 -0800 | [diff] [blame] | 314 | GRPC_ERROR_UNREF(why); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 315 | } |
| 316 | |
| 317 | static void uv_destroy(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep) { |
| 318 | grpc_network_status_unregister_endpoint(ep); |
| 319 | grpc_tcp *tcp = (grpc_tcp *)ep; |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 320 | uv_close((uv_handle_t *)tcp->handle, uv_close_callback); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 321 | } |
| 322 | |
| 323 | static char *uv_get_peer(grpc_endpoint *ep) { |
| 324 | grpc_tcp *tcp = (grpc_tcp *)ep; |
| 325 | return gpr_strdup(tcp->peer_string); |
| 326 | } |
| 327 | |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 328 | static grpc_resource_user *uv_get_resource_user(grpc_endpoint *ep) { |
| 329 | grpc_tcp *tcp = (grpc_tcp *)ep; |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 330 | return tcp->resource_user; |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 331 | } |
| 332 | |
murgatroid99 | dedb923 | 2016-09-26 13:54:04 -0700 | [diff] [blame] | 333 | static grpc_workqueue *uv_get_workqueue(grpc_endpoint *ep) { return NULL; } |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 334 | |
murgatroid99 | 2e01234 | 2016-11-10 18:24:08 -0800 | [diff] [blame] | 335 | static int uv_get_fd(grpc_endpoint *ep) { return -1; } |
| 336 | |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 337 | static grpc_endpoint_vtable vtable = { |
| 338 | uv_endpoint_read, uv_endpoint_write, uv_get_workqueue, |
| 339 | uv_add_to_pollset, uv_add_to_pollset_set, uv_endpoint_shutdown, |
murgatroid99 | 2e01234 | 2016-11-10 18:24:08 -0800 | [diff] [blame] | 340 | uv_destroy, uv_get_resource_user, uv_get_peer, |
| 341 | uv_get_fd}; |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 342 | |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 343 | grpc_endpoint *grpc_tcp_create(uv_tcp_t *handle, |
| 344 | grpc_resource_quota *resource_quota, |
| 345 | char *peer_string) { |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 346 | grpc_tcp *tcp = (grpc_tcp *)gpr_malloc(sizeof(grpc_tcp)); |
| 347 | |
| 348 | if (grpc_tcp_trace) { |
| 349 | gpr_log(GPR_DEBUG, "Creating TCP endpoint %p", tcp); |
| 350 | } |
| 351 | |
murgatroid99 | 04d2829 | 2016-10-27 14:36:57 -0700 | [diff] [blame] | 352 | /* Disable Nagle's Algorithm */ |
murgatroid99 | 12e5775 | 2016-10-27 14:30:41 -0700 | [diff] [blame] | 353 | uv_tcp_nodelay(handle, 1); |
| 354 | |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 355 | memset(tcp, 0, sizeof(grpc_tcp)); |
| 356 | tcp->base.vtable = &vtable; |
| 357 | tcp->handle = handle; |
| 358 | handle->data = tcp; |
| 359 | gpr_ref_init(&tcp->refcount, 1); |
| 360 | tcp->peer_string = gpr_strdup(peer_string); |
murgatroid99 | 2c287ca | 2016-10-07 09:55:35 -0700 | [diff] [blame] | 361 | tcp->shutting_down = false; |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 362 | tcp->resource_user = grpc_resource_user_create(resource_quota, peer_string); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 363 | /* Tell network status tracking code about the new endpoint */ |
| 364 | grpc_network_status_register_endpoint(&tcp->base); |
| 365 | |
| 366 | #ifndef GRPC_UV_TCP_HOLD_LOOP |
| 367 | uv_unref((uv_handle_t *)handle); |
| 368 | #endif |
| 369 | |
| 370 | return &tcp->base; |
| 371 | } |
| 372 | |
| 373 | #endif /* GRPC_UV */ |