murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 1 | /* |
| 2 | * |
Jan Tattermusch | 7897ae9 | 2017-06-07 22:57:36 +0200 | [diff] [blame] | 3 | * Copyright 2016 gRPC authors. |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 4 | * |
Jan Tattermusch | 7897ae9 | 2017-06-07 22:57:36 +0200 | [diff] [blame] | 5 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | * you may not use this file except in compliance with the License. |
| 7 | * You may obtain a copy of the License at |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 8 | * |
Jan Tattermusch | 7897ae9 | 2017-06-07 22:57:36 +0200 | [diff] [blame] | 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 10 | * |
Jan Tattermusch | 7897ae9 | 2017-06-07 22:57:36 +0200 | [diff] [blame] | 11 | * Unless required by applicable law or agreed to in writing, software |
| 12 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | * See the License for the specific language governing permissions and |
| 15 | * limitations under the License. |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 16 | * |
| 17 | */ |
| 18 | |
| 19 | #include "src/core/lib/iomgr/port.h" |
| 20 | |
| 21 | #ifdef GRPC_UV |
| 22 | |
| 23 | #include <limits.h> |
| 24 | #include <string.h> |
| 25 | |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 26 | #include <grpc/slice_buffer.h> |
| 27 | |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 28 | #include <grpc/support/alloc.h> |
| 29 | #include <grpc/support/log.h> |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 30 | #include <grpc/support/string_util.h> |
| 31 | |
| 32 | #include "src/core/lib/iomgr/error.h" |
| 33 | #include "src/core/lib/iomgr/network_status_tracker.h" |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 34 | #include "src/core/lib/iomgr/resource_quota.h" |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 35 | #include "src/core/lib/iomgr/tcp_uv.h" |
Craig Tiller | 7c70b6c | 2017-01-23 07:48:42 -0800 | [diff] [blame] | 36 | #include "src/core/lib/slice/slice_internal.h" |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 37 | #include "src/core/lib/slice/slice_string_helpers.h" |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 38 | #include "src/core/lib/support/string.h" |
| 39 | |
Craig Tiller | 020176d | 2017-05-09 08:36:44 -0700 | [diff] [blame] | 40 | grpc_tracer_flag grpc_tcp_trace = GRPC_TRACER_INITIALIZER(false); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 41 | |
| 42 | typedef struct { |
| 43 | grpc_endpoint base; |
| 44 | gpr_refcount refcount; |
| 45 | |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 46 | uv_write_t write_req; |
| 47 | uv_shutdown_t shutdown_req; |
| 48 | |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 49 | uv_tcp_t *handle; |
| 50 | |
| 51 | grpc_closure *read_cb; |
| 52 | grpc_closure *write_cb; |
| 53 | |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 54 | grpc_slice read_slice; |
| 55 | grpc_slice_buffer *read_slices; |
| 56 | grpc_slice_buffer *write_slices; |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 57 | uv_buf_t *write_buffers; |
| 58 | |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 59 | grpc_resource_user *resource_user; |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 60 | |
murgatroid99 | 2c287ca | 2016-10-07 09:55:35 -0700 | [diff] [blame] | 61 | bool shutting_down; |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 62 | |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 63 | char *peer_string; |
| 64 | grpc_pollset *pollset; |
| 65 | } grpc_tcp; |
| 66 | |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 67 | static void tcp_free(grpc_exec_ctx *exec_ctx, grpc_tcp *tcp) { |
| 68 | grpc_resource_user_unref(exec_ctx, tcp->resource_user); |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 69 | gpr_free(tcp); |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 70 | } |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 71 | |
ncteisen | 0e3aee3 | 2017-06-08 16:32:24 -0700 | [diff] [blame] | 72 | #ifndef NDEBUG |
murgatroid99 | 2e01234 | 2016-11-10 18:24:08 -0800 | [diff] [blame] | 73 | #define TCP_UNREF(exec_ctx, tcp, reason) \ |
| 74 | tcp_unref((exec_ctx), (tcp), (reason), __FILE__, __LINE__) |
murgatroid99 | a1137ce | 2017-05-09 14:21:12 -0700 | [diff] [blame] | 75 | #define TCP_REF(tcp, reason) tcp_ref((tcp), (reason), __FILE__, __LINE__) |
murgatroid99 | 2e01234 | 2016-11-10 18:24:08 -0800 | [diff] [blame] | 76 | static void tcp_unref(grpc_exec_ctx *exec_ctx, grpc_tcp *tcp, |
| 77 | const char *reason, const char *file, int line) { |
ncteisen | 0e3aee3 | 2017-06-08 16:32:24 -0700 | [diff] [blame] | 78 | if (GRPC_TRACER_ON(grpc_tcp_trace)) { |
| 79 | gpr_atm val = gpr_atm_no_barrier_load(&tcp->refcount.count); |
ncteisen | d39010e | 2017-06-08 17:08:07 -0700 | [diff] [blame^] | 80 | gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG, |
| 81 | "TCP unref %p : %s %" PRIdPTR " -> %" PRIdPTR, tcp, reason, val, |
| 82 | val - 1); |
ncteisen | 0e3aee3 | 2017-06-08 16:32:24 -0700 | [diff] [blame] | 83 | } |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 84 | if (gpr_unref(&tcp->refcount)) { |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 85 | tcp_free(exec_ctx, tcp); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 86 | } |
| 87 | } |
| 88 | |
| 89 | static void tcp_ref(grpc_tcp *tcp, const char *reason, const char *file, |
| 90 | int line) { |
ncteisen | 0e3aee3 | 2017-06-08 16:32:24 -0700 | [diff] [blame] | 91 | if (GRPC_TRACER_ON(grpc_tcp_trace)) { |
| 92 | gpr_atm val = gpr_atm_no_barrier_load(&tcp->refcount.count); |
ncteisen | d39010e | 2017-06-08 17:08:07 -0700 | [diff] [blame^] | 93 | gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG, |
| 94 | "TCP ref %p : %s %" PRIdPTR " -> %" PRIdPTR, tcp, reason, val, |
| 95 | val + 1); |
ncteisen | 0e3aee3 | 2017-06-08 16:32:24 -0700 | [diff] [blame] | 96 | } |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 97 | gpr_ref(&tcp->refcount); |
| 98 | } |
| 99 | #else |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 100 | #define TCP_UNREF(exec_ctx, tcp, reason) tcp_unref((exec_ctx), (tcp)) |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 101 | #define TCP_REF(tcp, reason) tcp_ref((tcp)) |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 102 | static void tcp_unref(grpc_exec_ctx *exec_ctx, grpc_tcp *tcp) { |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 103 | if (gpr_unref(&tcp->refcount)) { |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 104 | tcp_free(exec_ctx, tcp); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 105 | } |
| 106 | } |
| 107 | |
| 108 | static void tcp_ref(grpc_tcp *tcp) { gpr_ref(&tcp->refcount); } |
| 109 | #endif |
| 110 | |
murgatroid99 | 1191b72 | 2017-02-08 11:56:52 -0800 | [diff] [blame] | 111 | static void uv_close_callback(uv_handle_t *handle) { |
| 112 | grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
| 113 | grpc_tcp *tcp = handle->data; |
| 114 | TCP_UNREF(&exec_ctx, tcp, "destroy"); |
| 115 | grpc_exec_ctx_finish(&exec_ctx); |
| 116 | } |
| 117 | |
murgatroid99 | dedb923 | 2016-09-26 13:54:04 -0700 | [diff] [blame] | 118 | static void alloc_uv_buf(uv_handle_t *handle, size_t suggested_size, |
| 119 | uv_buf_t *buf) { |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 120 | grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 121 | grpc_tcp *tcp = handle->data; |
| 122 | (void)suggested_size; |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 123 | tcp->read_slice = grpc_resource_user_slice_malloc( |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 124 | &exec_ctx, tcp->resource_user, GRPC_TCP_DEFAULT_READ_SLICE_SIZE); |
Craig Tiller | 618e67d | 2016-10-26 21:08:10 -0700 | [diff] [blame] | 125 | buf->base = (char *)GRPC_SLICE_START_PTR(tcp->read_slice); |
| 126 | buf->len = GRPC_SLICE_LENGTH(tcp->read_slice); |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 127 | grpc_exec_ctx_finish(&exec_ctx); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 128 | } |
| 129 | |
murgatroid99 | dedb923 | 2016-09-26 13:54:04 -0700 | [diff] [blame] | 130 | static void read_callback(uv_stream_t *stream, ssize_t nread, |
| 131 | const uv_buf_t *buf) { |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 132 | grpc_slice sub; |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 133 | grpc_error *error; |
| 134 | grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
| 135 | grpc_tcp *tcp = stream->data; |
| 136 | grpc_closure *cb = tcp->read_cb; |
| 137 | if (nread == 0) { |
| 138 | // Nothing happened. Wait for the next callback |
| 139 | return; |
| 140 | } |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 141 | TCP_UNREF(&exec_ctx, tcp, "read"); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 142 | tcp->read_cb = NULL; |
| 143 | // TODO(murgatroid99): figure out what the return value here means |
| 144 | uv_read_stop(stream); |
| 145 | if (nread == UV_EOF) { |
ncteisen | 4b36a3d | 2017-03-13 19:08:06 -0700 | [diff] [blame] | 146 | error = GRPC_ERROR_CREATE_FROM_STATIC_STRING("EOF"); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 147 | } else if (nread > 0) { |
| 148 | // Successful read |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 149 | sub = grpc_slice_sub_no_ref(tcp->read_slice, 0, (size_t)nread); |
| 150 | grpc_slice_buffer_add(tcp->read_slices, sub); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 151 | error = GRPC_ERROR_NONE; |
Craig Tiller | 341bcc5 | 2017-05-09 08:37:44 -0700 | [diff] [blame] | 152 | if (GRPC_TRACER_ON(grpc_tcp_trace)) { |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 153 | size_t i; |
| 154 | const char *str = grpc_error_string(error); |
| 155 | gpr_log(GPR_DEBUG, "read: error=%s", str); |
Craig Tiller | 7c70b6c | 2017-01-23 07:48:42 -0800 | [diff] [blame] | 156 | |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 157 | for (i = 0; i < tcp->read_slices->count; i++) { |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 158 | char *dump = grpc_dump_slice(tcp->read_slices->slices[i], |
murgatroid99 | 2e01234 | 2016-11-10 18:24:08 -0800 | [diff] [blame] | 159 | GPR_DUMP_HEX | GPR_DUMP_ASCII); |
murgatroid99 | dedb923 | 2016-09-26 13:54:04 -0700 | [diff] [blame] | 160 | gpr_log(GPR_DEBUG, "READ %p (peer=%s): %s", tcp, tcp->peer_string, |
| 161 | dump); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 162 | gpr_free(dump); |
| 163 | } |
| 164 | } |
| 165 | } else { |
| 166 | // nread < 0: Error |
ncteisen | 4b36a3d | 2017-03-13 19:08:06 -0700 | [diff] [blame] | 167 | error = GRPC_ERROR_CREATE_FROM_STATIC_STRING("TCP Read failed"); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 168 | } |
ncteisen | 969b46e | 2017-06-08 14:57:11 -0700 | [diff] [blame] | 169 | GRPC_CLOSURE_SCHED(&exec_ctx, cb, error); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 170 | grpc_exec_ctx_finish(&exec_ctx); |
| 171 | } |
| 172 | |
| 173 | static void uv_endpoint_read(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep, |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 174 | grpc_slice_buffer *read_slices, grpc_closure *cb) { |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 175 | grpc_tcp *tcp = (grpc_tcp *)ep; |
| 176 | int status; |
| 177 | grpc_error *error = GRPC_ERROR_NONE; |
| 178 | GPR_ASSERT(tcp->read_cb == NULL); |
| 179 | tcp->read_cb = cb; |
| 180 | tcp->read_slices = read_slices; |
Craig Tiller | ab7b2d8 | 2016-12-07 07:26:34 -0800 | [diff] [blame] | 181 | grpc_slice_buffer_reset_and_unref_internal(exec_ctx, read_slices); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 182 | TCP_REF(tcp, "read"); |
| 183 | // TODO(murgatroid99): figure out what the return value here means |
murgatroid99 | dedb923 | 2016-09-26 13:54:04 -0700 | [diff] [blame] | 184 | status = |
| 185 | uv_read_start((uv_stream_t *)tcp->handle, alloc_uv_buf, read_callback); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 186 | if (status != 0) { |
ncteisen | 4b36a3d | 2017-03-13 19:08:06 -0700 | [diff] [blame] | 187 | error = GRPC_ERROR_CREATE_FROM_STATIC_STRING("TCP Read failed at start"); |
murgatroid99 | dedb923 | 2016-09-26 13:54:04 -0700 | [diff] [blame] | 188 | error = |
ncteisen | 4b36a3d | 2017-03-13 19:08:06 -0700 | [diff] [blame] | 189 | grpc_error_set_str(error, GRPC_ERROR_STR_OS_ERROR, |
| 190 | grpc_slice_from_static_string(uv_strerror(status))); |
ncteisen | 969b46e | 2017-06-08 14:57:11 -0700 | [diff] [blame] | 191 | GRPC_CLOSURE_SCHED(exec_ctx, cb, error); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 192 | } |
Craig Tiller | 341bcc5 | 2017-05-09 08:37:44 -0700 | [diff] [blame] | 193 | if (GRPC_TRACER_ON(grpc_tcp_trace)) { |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 194 | const char *str = grpc_error_string(error); |
| 195 | gpr_log(GPR_DEBUG, "Initiating read on %p: error=%s", tcp, str); |
| 196 | } |
| 197 | } |
| 198 | |
| 199 | static void write_callback(uv_write_t *req, int status) { |
| 200 | grpc_tcp *tcp = req->data; |
| 201 | grpc_error *error; |
| 202 | grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
| 203 | grpc_closure *cb = tcp->write_cb; |
| 204 | tcp->write_cb = NULL; |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 205 | TCP_UNREF(&exec_ctx, tcp, "write"); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 206 | if (status == 0) { |
| 207 | error = GRPC_ERROR_NONE; |
| 208 | } else { |
ncteisen | 4b36a3d | 2017-03-13 19:08:06 -0700 | [diff] [blame] | 209 | error = GRPC_ERROR_CREATE_FROM_STATIC_STRING("TCP Write failed"); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 210 | } |
Craig Tiller | 341bcc5 | 2017-05-09 08:37:44 -0700 | [diff] [blame] | 211 | if (GRPC_TRACER_ON(grpc_tcp_trace)) { |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 212 | const char *str = grpc_error_string(error); |
| 213 | gpr_log(GPR_DEBUG, "write complete on %p: error=%s", tcp, str); |
| 214 | } |
| 215 | gpr_free(tcp->write_buffers); |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 216 | grpc_resource_user_free(&exec_ctx, tcp->resource_user, |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 217 | sizeof(uv_buf_t) * tcp->write_slices->count); |
ncteisen | 969b46e | 2017-06-08 14:57:11 -0700 | [diff] [blame] | 218 | GRPC_CLOSURE_SCHED(&exec_ctx, cb, error); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 219 | grpc_exec_ctx_finish(&exec_ctx); |
| 220 | } |
| 221 | |
| 222 | static void uv_endpoint_write(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep, |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 223 | grpc_slice_buffer *write_slices, |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 224 | grpc_closure *cb) { |
| 225 | grpc_tcp *tcp = (grpc_tcp *)ep; |
| 226 | uv_buf_t *buffers; |
| 227 | unsigned int buffer_count; |
| 228 | unsigned int i; |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 229 | grpc_slice *slice; |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 230 | uv_write_t *write_req; |
| 231 | |
Craig Tiller | 341bcc5 | 2017-05-09 08:37:44 -0700 | [diff] [blame] | 232 | if (GRPC_TRACER_ON(grpc_tcp_trace)) { |
murgatroid99 | c36f6ea | 2016-10-03 09:24:09 -0700 | [diff] [blame] | 233 | size_t j; |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 234 | |
murgatroid99 | c36f6ea | 2016-10-03 09:24:09 -0700 | [diff] [blame] | 235 | for (j = 0; j < write_slices->count; j++) { |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 236 | char *data = grpc_dump_slice(write_slices->slices[j], |
murgatroid99 | 2e01234 | 2016-11-10 18:24:08 -0800 | [diff] [blame] | 237 | GPR_DUMP_HEX | GPR_DUMP_ASCII); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 238 | gpr_log(GPR_DEBUG, "WRITE %p (peer=%s): %s", tcp, tcp->peer_string, data); |
| 239 | gpr_free(data); |
| 240 | } |
| 241 | } |
| 242 | |
| 243 | if (tcp->shutting_down) { |
ncteisen | 969b46e | 2017-06-08 14:57:11 -0700 | [diff] [blame] | 244 | GRPC_CLOSURE_SCHED(exec_ctx, cb, GRPC_ERROR_CREATE_FROM_STATIC_STRING( |
ncteisen | 4b36a3d | 2017-03-13 19:08:06 -0700 | [diff] [blame] | 245 | "TCP socket is shutting down")); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 246 | return; |
| 247 | } |
| 248 | |
| 249 | GPR_ASSERT(tcp->write_cb == NULL); |
| 250 | tcp->write_slices = write_slices; |
| 251 | GPR_ASSERT(tcp->write_slices->count <= UINT_MAX); |
| 252 | if (tcp->write_slices->count == 0) { |
| 253 | // No slices means we don't have to do anything, |
| 254 | // and libuv doesn't like empty writes |
ncteisen | 969b46e | 2017-06-08 14:57:11 -0700 | [diff] [blame] | 255 | GRPC_CLOSURE_SCHED(exec_ctx, cb, GRPC_ERROR_NONE); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 256 | return; |
| 257 | } |
| 258 | |
| 259 | tcp->write_cb = cb; |
| 260 | buffer_count = (unsigned int)tcp->write_slices->count; |
| 261 | buffers = gpr_malloc(sizeof(uv_buf_t) * buffer_count); |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 262 | grpc_resource_user_alloc(exec_ctx, tcp->resource_user, |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 263 | sizeof(uv_buf_t) * buffer_count, NULL); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 264 | for (i = 0; i < buffer_count; i++) { |
| 265 | slice = &tcp->write_slices->slices[i]; |
Craig Tiller | 618e67d | 2016-10-26 21:08:10 -0700 | [diff] [blame] | 266 | buffers[i].base = (char *)GRPC_SLICE_START_PTR(*slice); |
| 267 | buffers[i].len = GRPC_SLICE_LENGTH(*slice); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 268 | } |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 269 | tcp->write_buffers = buffers; |
| 270 | write_req = &tcp->write_req; |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 271 | write_req->data = tcp; |
| 272 | TCP_REF(tcp, "write"); |
| 273 | // TODO(murgatroid99): figure out what the return value here means |
| 274 | uv_write(write_req, (uv_stream_t *)tcp->handle, buffers, buffer_count, |
| 275 | write_callback); |
| 276 | } |
| 277 | |
| 278 | static void uv_add_to_pollset(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep, |
| 279 | grpc_pollset *pollset) { |
| 280 | // No-op. We're ignoring pollsets currently |
murgatroid99 | dedb923 | 2016-09-26 13:54:04 -0700 | [diff] [blame] | 281 | (void)exec_ctx; |
| 282 | (void)ep; |
| 283 | (void)pollset; |
| 284 | grpc_tcp *tcp = (grpc_tcp *)ep; |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 285 | tcp->pollset = pollset; |
| 286 | } |
| 287 | |
| 288 | static void uv_add_to_pollset_set(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep, |
| 289 | grpc_pollset_set *pollset) { |
| 290 | // No-op. We're ignoring pollsets currently |
murgatroid99 | dedb923 | 2016-09-26 13:54:04 -0700 | [diff] [blame] | 291 | (void)exec_ctx; |
| 292 | (void)ep; |
| 293 | (void)pollset; |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 294 | } |
| 295 | |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 296 | static void shutdown_callback(uv_shutdown_t *req, int status) {} |
| 297 | |
Craig Tiller | 22f13fb | 2017-01-27 11:43:25 -0800 | [diff] [blame] | 298 | static void uv_endpoint_shutdown(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep, |
| 299 | grpc_error *why) { |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 300 | grpc_tcp *tcp = (grpc_tcp *)ep; |
murgatroid99 | 2c287ca | 2016-10-07 09:55:35 -0700 | [diff] [blame] | 301 | if (!tcp->shutting_down) { |
| 302 | tcp->shutting_down = true; |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 303 | uv_shutdown_t *req = &tcp->shutdown_req; |
murgatroid99 | 2c287ca | 2016-10-07 09:55:35 -0700 | [diff] [blame] | 304 | uv_shutdown(req, (uv_stream_t *)tcp->handle, shutdown_callback); |
murgatroid99 | a1137ce | 2017-05-09 14:21:12 -0700 | [diff] [blame] | 305 | grpc_resource_user_shutdown(exec_ctx, tcp->resource_user); |
murgatroid99 | 2c287ca | 2016-10-07 09:55:35 -0700 | [diff] [blame] | 306 | } |
Craig Tiller | 22f13fb | 2017-01-27 11:43:25 -0800 | [diff] [blame] | 307 | GRPC_ERROR_UNREF(why); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 308 | } |
| 309 | |
| 310 | static void uv_destroy(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep) { |
| 311 | grpc_network_status_unregister_endpoint(ep); |
| 312 | grpc_tcp *tcp = (grpc_tcp *)ep; |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 313 | uv_close((uv_handle_t *)tcp->handle, uv_close_callback); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 314 | } |
| 315 | |
| 316 | static char *uv_get_peer(grpc_endpoint *ep) { |
| 317 | grpc_tcp *tcp = (grpc_tcp *)ep; |
| 318 | return gpr_strdup(tcp->peer_string); |
| 319 | } |
| 320 | |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 321 | static grpc_resource_user *uv_get_resource_user(grpc_endpoint *ep) { |
| 322 | grpc_tcp *tcp = (grpc_tcp *)ep; |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 323 | return tcp->resource_user; |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 324 | } |
| 325 | |
murgatroid99 | 2e01234 | 2016-11-10 18:24:08 -0800 | [diff] [blame] | 326 | static int uv_get_fd(grpc_endpoint *ep) { return -1; } |
| 327 | |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 328 | static grpc_endpoint_vtable vtable = { |
Craig Tiller | 00a8c0b | 2017-06-06 09:35:58 -0700 | [diff] [blame] | 329 | uv_endpoint_read, uv_endpoint_write, uv_add_to_pollset, |
| 330 | uv_add_to_pollset_set, uv_endpoint_shutdown, uv_destroy, |
| 331 | uv_get_resource_user, uv_get_peer, uv_get_fd}; |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 332 | |
murgatroid99 | 69259d4 | 2016-10-31 14:34:10 -0700 | [diff] [blame] | 333 | grpc_endpoint *grpc_tcp_create(uv_tcp_t *handle, |
| 334 | grpc_resource_quota *resource_quota, |
| 335 | char *peer_string) { |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 336 | grpc_tcp *tcp = (grpc_tcp *)gpr_malloc(sizeof(grpc_tcp)); |
| 337 | |
Craig Tiller | 341bcc5 | 2017-05-09 08:37:44 -0700 | [diff] [blame] | 338 | if (GRPC_TRACER_ON(grpc_tcp_trace)) { |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 339 | gpr_log(GPR_DEBUG, "Creating TCP endpoint %p", tcp); |
| 340 | } |
| 341 | |
murgatroid99 | 04d2829 | 2016-10-27 14:36:57 -0700 | [diff] [blame] | 342 | /* Disable Nagle's Algorithm */ |
murgatroid99 | 12e5775 | 2016-10-27 14:30:41 -0700 | [diff] [blame] | 343 | uv_tcp_nodelay(handle, 1); |
| 344 | |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 345 | memset(tcp, 0, sizeof(grpc_tcp)); |
| 346 | tcp->base.vtable = &vtable; |
| 347 | tcp->handle = handle; |
| 348 | handle->data = tcp; |
| 349 | gpr_ref_init(&tcp->refcount, 1); |
| 350 | tcp->peer_string = gpr_strdup(peer_string); |
murgatroid99 | 2c287ca | 2016-10-07 09:55:35 -0700 | [diff] [blame] | 351 | tcp->shutting_down = false; |
murgatroid99 | e2672c9 | 2016-11-09 15:12:22 -0800 | [diff] [blame] | 352 | tcp->resource_user = grpc_resource_user_create(resource_quota, peer_string); |
murgatroid99 | 9030c81 | 2016-09-16 13:25:08 -0700 | [diff] [blame] | 353 | /* Tell network status tracking code about the new endpoint */ |
| 354 | grpc_network_status_register_endpoint(&tcp->base); |
| 355 | |
| 356 | #ifndef GRPC_UV_TCP_HOLD_LOOP |
| 357 | uv_unref((uv_handle_t *)handle); |
| 358 | #endif |
| 359 | |
| 360 | return &tcp->base; |
| 361 | } |
| 362 | |
| 363 | #endif /* GRPC_UV */ |