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| 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #include "net/http/http_pipelined_connection.h" |
| 6 |
| 7 #include "base/message_loop.h" |
| 8 #include "base/stl_util-inl.h" |
| 9 #include "net/base/io_buffer.h" |
| 10 #include "net/http/http_pipelined_host.h" |
| 11 #include "net/http/http_pipelined_stream.h" |
| 12 #include "net/http/http_request_info.h" |
| 13 #include "net/http/http_stream_parser.h" |
| 14 #include "net/socket/client_socket_handle.h" |
| 15 |
| 16 namespace net { |
| 17 |
| 18 HttpPipelinedConnection::HttpPipelinedConnection( |
| 19 ClientSocketHandle* connection, |
| 20 HttpPipelinedHost* host, |
| 21 const SSLConfig& used_ssl_config, |
| 22 const ProxyInfo& used_proxy_info, |
| 23 const BoundNetLog& net_log, |
| 24 bool was_npn_negotiated) |
| 25 : host_(host), |
| 26 connection_(connection), |
| 27 used_ssl_config_(used_ssl_config), |
| 28 used_proxy_info_(used_proxy_info), |
| 29 net_log_(net_log), |
| 30 was_npn_negotiated_(was_npn_negotiated), |
| 31 read_buf_(new GrowableIOBuffer()), |
| 32 next_pipeline_id_(1), |
| 33 active_(false), |
| 34 usable_(true), |
| 35 ALLOW_THIS_IN_INITIALIZER_LIST(method_factory_(this)), |
| 36 send_next_state_(SEND_STATE_NONE), |
| 37 ALLOW_THIS_IN_INITIALIZER_LIST(send_io_callback_( |
| 38 this, &HttpPipelinedConnection::OnSendIOCallback)), |
| 39 send_user_callback_(NULL), |
| 40 read_next_state_(READ_STATE_NONE), |
| 41 ALLOW_THIS_IN_INITIALIZER_LIST(read_io_callback_( |
| 42 this, &HttpPipelinedConnection::OnReadIOCallback)), |
| 43 read_user_callback_(NULL) { |
| 44 DCHECK(connection_.get()); |
| 45 } |
| 46 |
| 47 HttpPipelinedConnection::~HttpPipelinedConnection() { |
| 48 DCHECK(depth() == 0); |
| 49 DCHECK(parser_map_.empty()); |
| 50 DCHECK(callback_map_.empty()); |
| 51 DCHECK(deferred_request_queue_.empty()); |
| 52 DCHECK(request_order_.empty()); |
| 53 DCHECK_EQ(send_next_state_, SEND_STATE_NONE); |
| 54 DCHECK_EQ(read_next_state_, READ_STATE_NONE); |
| 55 DCHECK(!send_user_callback_); |
| 56 DCHECK(!read_user_callback_); |
| 57 if (!usable_) { |
| 58 connection_->socket()->Disconnect(); |
| 59 } |
| 60 connection_->Reset(); |
| 61 } |
| 62 |
| 63 int HttpPipelinedConnection::AddStream() { |
| 64 int pipeline_id = next_pipeline_id_++; |
| 65 DCHECK(pipeline_id); |
| 66 stream_state_map_.insert(std::make_pair(pipeline_id, STREAM_CREATED)); |
| 67 return pipeline_id; |
| 68 } |
| 69 |
| 70 void HttpPipelinedConnection::InitializeParser(int pipeline_id, |
| 71 const HttpRequestInfo* request, |
| 72 const BoundNetLog& net_log) { |
| 73 DCHECK(ContainsKey(stream_state_map_, pipeline_id)); |
| 74 DCHECK(!ContainsKey(parser_map_, pipeline_id)); |
| 75 stream_state_map_[pipeline_id] = STREAM_BOUND; |
| 76 HttpStreamParser* parser = new HttpStreamParser(connection_.get(), |
| 77 request, |
| 78 read_buf_.get(), |
| 79 net_log); |
| 80 parser_map_.insert(std::make_pair(pipeline_id, parser)); |
| 81 if (!active_) { |
| 82 active_ = true; |
| 83 MessageLoop::current()->PostTask( |
| 84 FROM_HERE, |
| 85 method_factory_.NewRunnableMethod( |
| 86 &HttpPipelinedConnection::FillPipeline)); |
| 87 } |
| 88 } |
| 89 |
| 90 void HttpPipelinedConnection::FillPipeline() { |
| 91 host_->OnPipelineHasCapacity(this); |
| 92 } |
| 93 |
| 94 void HttpPipelinedConnection::RemoveStream(int pipeline_id) { |
| 95 DCHECK(ContainsKey(stream_state_map_, pipeline_id)); |
| 96 |
| 97 if (stream_state_map_[pipeline_id] != STREAM_CREATED) { |
| 98 DCHECK_EQ(stream_state_map_[pipeline_id], STREAM_CLOSED); |
| 99 DCHECK(ContainsKey(parser_map_, pipeline_id)); |
| 100 DCHECK(!ContainsKey(callback_map_, pipeline_id)); |
| 101 |
| 102 stream_state_map_.erase(pipeline_id); |
| 103 ParserMap::iterator it = parser_map_.find(pipeline_id); |
| 104 delete it->second; |
| 105 parser_map_.erase(it); |
| 106 } |
| 107 |
| 108 MessageLoop::current()->PostTask( |
| 109 FROM_HERE, |
| 110 method_factory_.NewRunnableMethod( |
| 111 &HttpPipelinedConnection::FillPipeline)); |
| 112 } |
| 113 |
| 114 int HttpPipelinedConnection::SendRequest(int pipeline_id, |
| 115 const std::string& request_line, |
| 116 const HttpRequestHeaders& headers, |
| 117 UploadDataStream* request_body, |
| 118 HttpResponseInfo* response, |
| 119 CompletionCallback* callback) { |
| 120 DCHECK(ContainsKey(stream_state_map_, pipeline_id)); |
| 121 DCHECK_EQ(stream_state_map_[pipeline_id], STREAM_BOUND); |
| 122 if (!usable_) { |
| 123 return ERR_PIPELINE_EVICTION; |
| 124 } |
| 125 |
| 126 DeferredSendRequest deferred_request; |
| 127 deferred_request.pipeline_id = pipeline_id; |
| 128 deferred_request.request_line = request_line; |
| 129 deferred_request.headers = headers; |
| 130 deferred_request.request_body = request_body; |
| 131 deferred_request.response = response; |
| 132 deferred_request.callback = callback; |
| 133 deferred_request_queue_.push(deferred_request); |
| 134 |
| 135 if (send_next_state_ == SEND_STATE_NONE) { |
| 136 send_next_state_ = SEND_STATE_NEXT_REQUEST; |
| 137 return DoSendRequestLoop(OK); |
| 138 } else { |
| 139 return ERR_IO_PENDING; |
| 140 } |
| 141 } |
| 142 |
| 143 int HttpPipelinedConnection::DoSendRequestLoop(int result) { |
| 144 int rv = result; |
| 145 do { |
| 146 SendRequestState state = send_next_state_; |
| 147 send_next_state_ = SEND_STATE_NONE; |
| 148 switch (state) { |
| 149 case SEND_STATE_NEXT_REQUEST: |
| 150 rv = DoSendNextRequest(rv); |
| 151 break; |
| 152 case SEND_STATE_COMPLETE: |
| 153 rv = DoSendComplete(rv); |
| 154 break; |
| 155 case SEND_STATE_UNUSABLE: |
| 156 rv = DoEvictPendingSendRequests(rv); |
| 157 break; |
| 158 default: |
| 159 NOTREACHED() << "bad send state"; |
| 160 rv = ERR_FAILED; |
| 161 break; |
| 162 } |
| 163 } while (rv != ERR_IO_PENDING && send_next_state_ != SEND_STATE_NONE); |
| 164 return rv; |
| 165 } |
| 166 |
| 167 void HttpPipelinedConnection::OnSendIOCallback(int result) { |
| 168 DCHECK(send_user_callback_); |
| 169 DoSendRequestLoop(result); |
| 170 } |
| 171 |
| 172 int HttpPipelinedConnection::DoSendNextRequest(int result) { |
| 173 DCHECK(!deferred_request_queue_.empty()); |
| 174 const DeferredSendRequest& deferred_request = deferred_request_queue_.front(); |
| 175 DCHECK(ContainsKey(stream_state_map_, deferred_request.pipeline_id)); |
| 176 if (stream_state_map_[deferred_request.pipeline_id] == STREAM_CLOSED) { |
| 177 deferred_request_queue_.pop(); |
| 178 if (deferred_request_queue_.empty()) { |
| 179 send_next_state_ = SEND_STATE_NONE; |
| 180 } else { |
| 181 send_next_state_ = SEND_STATE_NEXT_REQUEST; |
| 182 } |
| 183 return OK; |
| 184 } |
| 185 DCHECK(ContainsKey(parser_map_, deferred_request.pipeline_id)); |
| 186 int rv = parser_map_[deferred_request.pipeline_id]->SendRequest( |
| 187 deferred_request.request_line, |
| 188 deferred_request.headers, |
| 189 deferred_request.request_body, |
| 190 deferred_request.response, |
| 191 &send_io_callback_); |
| 192 if (result == ERR_IO_PENDING || rv == ERR_IO_PENDING) { |
| 193 send_user_callback_ = deferred_request.callback; |
| 194 } |
| 195 request_order_.push(deferred_request.pipeline_id); |
| 196 stream_state_map_[deferred_request.pipeline_id] = STREAM_SENT; |
| 197 deferred_request_queue_.pop(); |
| 198 send_next_state_ = SEND_STATE_COMPLETE; |
| 199 return rv; |
| 200 } |
| 201 |
| 202 int HttpPipelinedConnection::DoSendComplete(int result) { |
| 203 if (send_user_callback_) { |
| 204 CompletionCallback* callback = send_user_callback_; |
| 205 send_user_callback_ = NULL; |
| 206 callback->Run(result); |
| 207 } |
| 208 if (result != OK) { |
| 209 send_next_state_ = SEND_STATE_UNUSABLE; |
| 210 usable_ = false; |
| 211 return result; |
| 212 } |
| 213 if (deferred_request_queue_.empty()) { |
| 214 send_next_state_ = SEND_STATE_NONE; |
| 215 } else { |
| 216 send_next_state_ = SEND_STATE_NEXT_REQUEST; |
| 217 MessageLoop::current()->PostTask( |
| 218 FROM_HERE, |
| 219 method_factory_.NewRunnableMethod( |
| 220 &HttpPipelinedConnection::DoSendRequestLoop, |
| 221 ERR_IO_PENDING)); |
| 222 } |
| 223 return OK; |
| 224 } |
| 225 |
| 226 int HttpPipelinedConnection::DoEvictPendingSendRequests(int result) { |
| 227 send_next_state_ = SEND_STATE_NONE; |
| 228 while (!deferred_request_queue_.empty()) { |
| 229 const DeferredSendRequest& evicted_send = deferred_request_queue_.front(); |
| 230 if (stream_state_map_[evicted_send.pipeline_id] == STREAM_CLOSED) { |
| 231 continue; |
| 232 } |
| 233 evicted_send.callback->Run(ERR_PIPELINE_EVICTION); |
| 234 deferred_request_queue_.pop(); |
| 235 } |
| 236 return result; |
| 237 } |
| 238 |
| 239 int HttpPipelinedConnection::ReadResponseHeaders(int pipeline_id, |
| 240 CompletionCallback* callback) { |
| 241 DCHECK(ContainsKey(stream_state_map_, pipeline_id)); |
| 242 DCHECK_EQ(stream_state_map_[pipeline_id], STREAM_SENT); |
| 243 DCHECK(!ContainsKey(callback_map_, pipeline_id)); |
| 244 if (!usable_) { |
| 245 return ERR_PIPELINE_EVICTION; |
| 246 } |
| 247 callback_map_[pipeline_id] = callback; |
| 248 if (read_next_state_ == READ_STATE_NONE) { |
| 249 read_next_state_ = READ_STATE_NEXT_HEADERS; |
| 250 return DoReadHeadersLoop(OK); |
| 251 } else { |
| 252 return ERR_IO_PENDING; |
| 253 } |
| 254 } |
| 255 |
| 256 int HttpPipelinedConnection::DoReadHeadersLoop(int result) { |
| 257 int rv = result; |
| 258 do { |
| 259 ReadHeadersState state = read_next_state_; |
| 260 read_next_state_ = READ_STATE_NONE; |
| 261 switch (state) { |
| 262 case READ_STATE_NEXT_HEADERS: |
| 263 rv = DoReadNextHeaders(rv); |
| 264 break; |
| 265 case READ_STATE_COMPLETE: |
| 266 rv = DoReadHeadersComplete(rv); |
| 267 break; |
| 268 case READ_STATE_STREAM_CLOSED: |
| 269 rv = DoStreamClosed(); |
| 270 break; |
| 271 case READ_STATE_UNUSABLE: |
| 272 rv = DoEvictPendingReadHeaders(rv); |
| 273 break; |
| 274 default: |
| 275 NOTREACHED() << "bad read state"; |
| 276 rv = ERR_FAILED; |
| 277 break; |
| 278 } |
| 279 } while (rv != ERR_IO_PENDING && read_next_state_ != READ_STATE_NONE); |
| 280 return rv; |
| 281 } |
| 282 |
| 283 void HttpPipelinedConnection::OnReadIOCallback(int result) { |
| 284 DCHECK(read_user_callback_ != NULL); |
| 285 DoReadHeadersLoop(result); |
| 286 } |
| 287 |
| 288 int HttpPipelinedConnection::DoReadNextHeaders(int result) { |
| 289 DCHECK(!request_order_.empty()); |
| 290 int pipeline_id = request_order_.front(); |
| 291 DCHECK(ContainsKey(stream_state_map_, pipeline_id)); |
| 292 if (stream_state_map_[pipeline_id] == STREAM_CLOSED) { |
| 293 // Since nobody will read whatever data is on the pipeline associated with |
| 294 // this request, we must shut down the rest of the pipeline. |
| 295 read_next_state_ = READ_STATE_UNUSABLE; |
| 296 return OK; |
| 297 } |
| 298 CallbackMap::iterator it = callback_map_.find(pipeline_id); |
| 299 if (it == callback_map_.end()) { |
| 300 return ERR_IO_PENDING; |
| 301 } |
| 302 DCHECK(ContainsKey(parser_map_, pipeline_id)); |
| 303 int rv = parser_map_[pipeline_id]->ReadResponseHeaders( |
| 304 &read_io_callback_); |
| 305 if (rv == ERR_IO_PENDING) { |
| 306 read_next_state_ = READ_STATE_COMPLETE; |
| 307 read_user_callback_ = it->second; |
| 308 } else if (result == ERR_IO_PENDING) { |
| 309 read_next_state_ = READ_STATE_STREAM_CLOSED; |
| 310 MessageLoop::current()->PostTask( |
| 311 FROM_HERE, |
| 312 method_factory_.NewRunnableMethod( |
| 313 &HttpPipelinedConnection::FireUserCallback, |
| 314 it->second, |
| 315 rv)); |
| 316 rv = ERR_IO_PENDING; |
| 317 } |
| 318 callback_map_.erase(it); |
| 319 return rv; |
| 320 } |
| 321 |
| 322 int HttpPipelinedConnection::DoReadHeadersComplete(int result) { |
| 323 read_next_state_ = READ_STATE_STREAM_CLOSED; |
| 324 if (read_user_callback_) { |
| 325 MessageLoop::current()->PostTask( |
| 326 FROM_HERE, |
| 327 method_factory_.NewRunnableMethod( |
| 328 &HttpPipelinedConnection::FireUserCallback, |
| 329 read_user_callback_, |
| 330 result)); |
| 331 read_user_callback_ = NULL; |
| 332 } |
| 333 return ERR_IO_PENDING; |
| 334 } |
| 335 |
| 336 void HttpPipelinedConnection::FireUserCallback(CompletionCallback* callback, |
| 337 int result) { |
| 338 DCHECK(callback); |
| 339 callback->Run(result); |
| 340 } |
| 341 |
| 342 int HttpPipelinedConnection::DoStreamClosed() { |
| 343 DCHECK(!request_order_.empty()); |
| 344 request_order_.pop(); |
| 345 if (request_order_.empty()) { |
| 346 read_next_state_ = READ_STATE_NONE; |
| 347 return OK; |
| 348 } else { |
| 349 read_next_state_ = READ_STATE_NEXT_HEADERS; |
| 350 MessageLoop::current()->PostTask( |
| 351 FROM_HERE, |
| 352 method_factory_.NewRunnableMethod( |
| 353 &HttpPipelinedConnection::DoReadHeadersLoop, |
| 354 ERR_IO_PENDING)); |
| 355 return ERR_IO_PENDING; // Wait for the task to fire. |
| 356 } |
| 357 } |
| 358 |
| 359 int HttpPipelinedConnection::DoEvictPendingReadHeaders(int result) { |
| 360 while (!request_order_.empty()) { |
| 361 int evicted_id = request_order_.front(); |
| 362 request_order_.pop(); |
| 363 CallbackMap::iterator cb_it = callback_map_.find(evicted_id); |
| 364 if (cb_it == callback_map_.end()) { |
| 365 continue; |
| 366 } |
| 367 callback_map_.erase(cb_it); |
| 368 if (stream_state_map_[evicted_id] == STREAM_CLOSED) { |
| 369 continue; |
| 370 } |
| 371 cb_it->second->Run(ERR_PIPELINE_EVICTION); |
| 372 } |
| 373 DCHECK(callback_map_.empty()); |
| 374 read_next_state_ = READ_STATE_NONE; |
| 375 return result; |
| 376 } |
| 377 |
| 378 void HttpPipelinedConnection::Close(int pipeline_id, |
| 379 bool not_reusable) { |
| 380 DCHECK(ContainsKey(stream_state_map_, pipeline_id)); |
| 381 if (stream_state_map_[pipeline_id] == STREAM_CLOSED) { |
| 382 // TODO(simonjam): Why is Close() sometimes called twice? |
| 383 return; |
| 384 } |
| 385 stream_state_map_[pipeline_id] = STREAM_CLOSED; |
| 386 // TODO(simonjam): If it hasn't sent yet, then we can just ignore it instead |
| 387 // of shutting the pipeline down. |
| 388 bool is_active_stream = !request_order_.empty() && |
| 389 pipeline_id == request_order_.front(); |
| 390 if (not_reusable || !is_active_stream) { |
| 391 usable_ = false; |
| 392 } |
| 393 if (is_active_stream) { |
| 394 read_next_state_ = READ_STATE_STREAM_CLOSED; |
| 395 read_user_callback_ = NULL; |
| 396 DoReadHeadersLoop(OK); |
| 397 } else { |
| 398 if (send_next_state_ == SEND_STATE_NONE) { |
| 399 send_next_state_ = SEND_STATE_UNUSABLE; |
| 400 DoSendRequestLoop(OK); |
| 401 } |
| 402 if (read_next_state_ == READ_STATE_NONE) { |
| 403 read_next_state_ = READ_STATE_UNUSABLE; |
| 404 DoReadHeadersLoop(OK); |
| 405 } |
| 406 } |
| 407 } |
| 408 |
| 409 int HttpPipelinedConnection::ReadResponseBody(int pipeline_id, |
| 410 IOBuffer* buf, int buf_len, |
| 411 CompletionCallback* callback) { |
| 412 DCHECK(ContainsKey(stream_state_map_, pipeline_id)); |
| 413 DCHECK(!request_order_.empty()); |
| 414 DCHECK(pipeline_id == request_order_.front()); |
| 415 DCHECK(ContainsKey(parser_map_, pipeline_id)); |
| 416 return parser_map_[pipeline_id]->ReadResponseBody(buf, buf_len, callback); |
| 417 } |
| 418 |
| 419 uint64 HttpPipelinedConnection::GetUploadProgress(int pipeline_id) const { |
| 420 DCHECK(ContainsKey(stream_state_map_, pipeline_id)); |
| 421 DCHECK(ContainsKey(parser_map_, pipeline_id)); |
| 422 return parser_map_.find(pipeline_id)->second->GetUploadProgress(); |
| 423 } |
| 424 |
| 425 HttpResponseInfo* HttpPipelinedConnection::GetResponseInfo(int pipeline_id) { |
| 426 DCHECK(ContainsKey(stream_state_map_, pipeline_id)); |
| 427 DCHECK(ContainsKey(parser_map_, pipeline_id)); |
| 428 return parser_map_[pipeline_id]->GetResponseInfo(); |
| 429 } |
| 430 |
| 431 bool HttpPipelinedConnection::IsResponseBodyComplete(int pipeline_id) const { |
| 432 DCHECK(ContainsKey(stream_state_map_, pipeline_id)); |
| 433 DCHECK(ContainsKey(parser_map_, pipeline_id)); |
| 434 return parser_map_.find(pipeline_id)->second->IsResponseBodyComplete(); |
| 435 } |
| 436 |
| 437 bool HttpPipelinedConnection::CanFindEndOfResponse(int pipeline_id) const { |
| 438 DCHECK(ContainsKey(stream_state_map_, pipeline_id)); |
| 439 DCHECK(ContainsKey(parser_map_, pipeline_id)); |
| 440 return parser_map_.find(pipeline_id)->second->CanFindEndOfResponse(); |
| 441 } |
| 442 |
| 443 bool HttpPipelinedConnection::IsMoreDataBuffered(int pipeline_id) const { |
| 444 DCHECK(ContainsKey(stream_state_map_, pipeline_id)); |
| 445 return read_buf_->offset(); |
| 446 } |
| 447 |
| 448 bool HttpPipelinedConnection::IsConnectionReused(int pipeline_id) const { |
| 449 DCHECK(ContainsKey(stream_state_map_, pipeline_id)); |
| 450 if (pipeline_id > 1) { |
| 451 return true; |
| 452 } |
| 453 ClientSocketHandle::SocketReuseType reuse_type = connection_->reuse_type(); |
| 454 return connection_->is_reused() || |
| 455 reuse_type == ClientSocketHandle::UNUSED_IDLE; |
| 456 } |
| 457 |
| 458 void HttpPipelinedConnection::SetConnectionReused(int pipeline_id) { |
| 459 DCHECK(ContainsKey(stream_state_map_, pipeline_id)); |
| 460 connection_->set_is_reused(true); |
| 461 } |
| 462 |
| 463 void HttpPipelinedConnection::GetSSLInfo(int pipeline_id, |
| 464 SSLInfo* ssl_info) { |
| 465 DCHECK(ContainsKey(stream_state_map_, pipeline_id)); |
| 466 DCHECK(ContainsKey(parser_map_, pipeline_id)); |
| 467 return parser_map_[pipeline_id]->GetSSLInfo(ssl_info); |
| 468 } |
| 469 |
| 470 void HttpPipelinedConnection::GetSSLCertRequestInfo( |
| 471 int pipeline_id, |
| 472 SSLCertRequestInfo* cert_request_info) { |
| 473 DCHECK(ContainsKey(stream_state_map_, pipeline_id)); |
| 474 DCHECK(ContainsKey(parser_map_, pipeline_id)); |
| 475 return parser_map_[pipeline_id]->GetSSLCertRequestInfo(cert_request_info); |
| 476 } |
| 477 |
| 478 } // namespace net |
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