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| 1 /* | |
| 2 * Copyright 2004 The WebRTC Project Authors. All rights reserved. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license | |
| 5 * that can be found in the LICENSE file in the root of the source | |
| 6 * tree. An additional intellectual property rights grant can be found | |
| 7 * in the file PATENTS. All contributing project authors may | |
| 8 * be found in the AUTHORS file in the root of the source tree. | |
| 9 */ | |
| 10 | |
| 11 #include <iomanip> | |
| 12 | |
| 13 #include "webrtc/base/asyncsocket.h" | |
| 14 #include "webrtc/base/checks.h" | |
| 15 #include "webrtc/base/logging.h" | |
| 16 #include "webrtc/base/socketfactory.h" | |
| 17 #include "webrtc/base/socketpool.h" | |
| 18 #include "webrtc/base/socketstream.h" | |
| 19 #include "webrtc/base/thread.h" | |
| 20 | |
| 21 namespace rtc { | |
| 22 | |
| 23 /////////////////////////////////////////////////////////////////////////////// | |
| 24 // StreamCache - Caches a set of open streams, defers creation to a separate | |
| 25 // StreamPool. | |
| 26 /////////////////////////////////////////////////////////////////////////////// | |
| 27 | |
| 28 StreamCache::StreamCache(StreamPool* pool) : pool_(pool) { | |
| 29 } | |
| 30 | |
| 31 StreamCache::~StreamCache() { | |
| 32 for (ConnectedList::iterator it = active_.begin(); it != active_.end(); | |
| 33 ++it) { | |
| 34 delete it->second; | |
| 35 } | |
| 36 for (ConnectedList::iterator it = cached_.begin(); it != cached_.end(); | |
| 37 ++it) { | |
| 38 delete it->second; | |
| 39 } | |
| 40 } | |
| 41 | |
| 42 StreamInterface* StreamCache::RequestConnectedStream( | |
| 43 const SocketAddress& remote, int* err) { | |
| 44 LOG_F(LS_VERBOSE) << "(" << remote << ")"; | |
| 45 for (ConnectedList::iterator it = cached_.begin(); it != cached_.end(); | |
| 46 ++it) { | |
| 47 if (remote == it->first) { | |
| 48 it->second->SignalEvent.disconnect(this); | |
| 49 // Move from cached_ to active_ | |
| 50 active_.push_front(*it); | |
| 51 cached_.erase(it); | |
| 52 if (err) | |
| 53 *err = 0; | |
| 54 LOG_F(LS_VERBOSE) << "Providing cached stream"; | |
| 55 return active_.front().second; | |
| 56 } | |
| 57 } | |
| 58 if (StreamInterface* stream = pool_->RequestConnectedStream(remote, err)) { | |
| 59 // We track active streams so that we can remember their address | |
| 60 active_.push_front(ConnectedStream(remote, stream)); | |
| 61 LOG_F(LS_VERBOSE) << "Providing new stream"; | |
| 62 return active_.front().second; | |
| 63 } | |
| 64 return NULL; | |
| 65 } | |
| 66 | |
| 67 void StreamCache::ReturnConnectedStream(StreamInterface* stream) { | |
| 68 for (ConnectedList::iterator it = active_.begin(); it != active_.end(); | |
| 69 ++it) { | |
| 70 if (stream == it->second) { | |
| 71 LOG_F(LS_VERBOSE) << "(" << it->first << ")"; | |
| 72 if (stream->GetState() == SS_CLOSED) { | |
| 73 // Return closed streams | |
| 74 LOG_F(LS_VERBOSE) << "Returning closed stream"; | |
| 75 pool_->ReturnConnectedStream(it->second); | |
| 76 } else { | |
| 77 // Monitor open streams | |
| 78 stream->SignalEvent.connect(this, &StreamCache::OnStreamEvent); | |
| 79 LOG_F(LS_VERBOSE) << "Caching stream"; | |
| 80 cached_.push_front(*it); | |
| 81 } | |
| 82 active_.erase(it); | |
| 83 return; | |
| 84 } | |
| 85 } | |
| 86 RTC_NOTREACHED(); | |
| 87 } | |
| 88 | |
| 89 void StreamCache::OnStreamEvent(StreamInterface* stream, int events, int err) { | |
| 90 if ((events & SE_CLOSE) == 0) { | |
| 91 LOG_F(LS_WARNING) << "(" << events << ", " << err | |
| 92 << ") received non-close event"; | |
| 93 return; | |
| 94 } | |
| 95 for (ConnectedList::iterator it = cached_.begin(); it != cached_.end(); | |
| 96 ++it) { | |
| 97 if (stream == it->second) { | |
| 98 LOG_F(LS_VERBOSE) << "(" << it->first << ")"; | |
| 99 // We don't cache closed streams, so return it. | |
| 100 it->second->SignalEvent.disconnect(this); | |
| 101 LOG_F(LS_VERBOSE) << "Returning closed stream"; | |
| 102 pool_->ReturnConnectedStream(it->second); | |
| 103 cached_.erase(it); | |
| 104 return; | |
| 105 } | |
| 106 } | |
| 107 RTC_NOTREACHED(); | |
| 108 } | |
| 109 | |
| 110 ////////////////////////////////////////////////////////////////////// | |
| 111 // NewSocketPool | |
| 112 ////////////////////////////////////////////////////////////////////// | |
| 113 | |
| 114 NewSocketPool::NewSocketPool(SocketFactory* factory) : factory_(factory) { | |
| 115 } | |
| 116 | |
| 117 NewSocketPool::~NewSocketPool() { | |
| 118 } | |
| 119 | |
| 120 StreamInterface* | |
| 121 NewSocketPool::RequestConnectedStream(const SocketAddress& remote, int* err) { | |
| 122 AsyncSocket* socket = | |
| 123 factory_->CreateAsyncSocket(remote.family(), SOCK_STREAM); | |
| 124 if (!socket) { | |
| 125 if (err) | |
| 126 *err = -1; | |
| 127 return NULL; | |
| 128 } | |
| 129 if ((socket->Connect(remote) != 0) && !socket->IsBlocking()) { | |
| 130 if (err) | |
| 131 *err = socket->GetError(); | |
| 132 delete socket; | |
| 133 return NULL; | |
| 134 } | |
| 135 if (err) | |
| 136 *err = 0; | |
| 137 return new SocketStream(socket); | |
| 138 } | |
| 139 | |
| 140 void | |
| 141 NewSocketPool::ReturnConnectedStream(StreamInterface* stream) { | |
| 142 Thread::Current()->Dispose(stream); | |
| 143 } | |
| 144 | |
| 145 ////////////////////////////////////////////////////////////////////// | |
| 146 // ReuseSocketPool | |
| 147 ////////////////////////////////////////////////////////////////////// | |
| 148 | |
| 149 ReuseSocketPool::ReuseSocketPool(SocketFactory* factory) | |
| 150 : factory_(factory), stream_(NULL), checked_out_(false) { | |
| 151 } | |
| 152 | |
| 153 ReuseSocketPool::~ReuseSocketPool() { | |
| 154 RTC_DCHECK(!checked_out_); | |
| 155 delete stream_; | |
| 156 } | |
| 157 | |
| 158 StreamInterface* | |
| 159 ReuseSocketPool::RequestConnectedStream(const SocketAddress& remote, int* err) { | |
| 160 // Only one socket can be used from this "pool" at a time | |
| 161 RTC_DCHECK(!checked_out_); | |
| 162 if (!stream_) { | |
| 163 LOG_F(LS_VERBOSE) << "Creating new socket"; | |
| 164 int family = remote.family(); | |
| 165 // TODO: Deal with this when we/I clean up DNS resolution. | |
| 166 if (remote.IsUnresolvedIP()) { | |
| 167 family = AF_INET; | |
| 168 } | |
| 169 AsyncSocket* socket = | |
| 170 factory_->CreateAsyncSocket(family, SOCK_STREAM); | |
| 171 if (!socket) { | |
| 172 if (err) | |
| 173 *err = -1; | |
| 174 return NULL; | |
| 175 } | |
| 176 stream_ = new SocketStream(socket); | |
| 177 } | |
| 178 if ((stream_->GetState() == SS_OPEN) && (remote == remote_)) { | |
| 179 LOG_F(LS_VERBOSE) << "Reusing connection to: " << remote_; | |
| 180 } else { | |
| 181 remote_ = remote; | |
| 182 stream_->Close(); | |
| 183 if ((stream_->GetSocket()->Connect(remote_) != 0) | |
| 184 && !stream_->GetSocket()->IsBlocking()) { | |
| 185 if (err) | |
| 186 *err = stream_->GetSocket()->GetError(); | |
| 187 return NULL; | |
| 188 } else { | |
| 189 LOG_F(LS_VERBOSE) << "Opening connection to: " << remote_; | |
| 190 } | |
| 191 } | |
| 192 stream_->SignalEvent.disconnect(this); | |
| 193 checked_out_ = true; | |
| 194 if (err) | |
| 195 *err = 0; | |
| 196 return stream_; | |
| 197 } | |
| 198 | |
| 199 void | |
| 200 ReuseSocketPool::ReturnConnectedStream(StreamInterface* stream) { | |
| 201 RTC_DCHECK(stream == stream_); | |
| 202 RTC_DCHECK(checked_out_); | |
| 203 checked_out_ = false; | |
| 204 // Until the socket is reused, monitor it to determine if it closes. | |
| 205 stream_->SignalEvent.connect(this, &ReuseSocketPool::OnStreamEvent); | |
| 206 } | |
| 207 | |
| 208 void | |
| 209 ReuseSocketPool::OnStreamEvent(StreamInterface* stream, int events, int err) { | |
| 210 RTC_DCHECK(stream == stream_); | |
| 211 RTC_DCHECK(!checked_out_); | |
| 212 | |
| 213 // If the stream was written to and then immediately returned to us then | |
| 214 // we may get a writable notification for it, which we should ignore. | |
| 215 if (events == SE_WRITE) { | |
| 216 LOG_F(LS_VERBOSE) << "Pooled Socket unexpectedly writable: ignoring"; | |
| 217 return; | |
| 218 } | |
| 219 | |
| 220 // If the peer sent data, we can't process it, so drop the connection. | |
| 221 // If the socket has closed, clean it up. | |
| 222 // In either case, we'll reconnect it the next time it is used. | |
| 223 RTC_DCHECK(0 != (events & (SE_READ | SE_CLOSE))); | |
| 224 if (0 != (events & SE_CLOSE)) { | |
| 225 LOG_F(LS_VERBOSE) << "Connection closed with error: " << err; | |
| 226 } else { | |
| 227 LOG_F(LS_VERBOSE) << "Pooled Socket unexpectedly readable: closing"; | |
| 228 } | |
| 229 stream_->Close(); | |
| 230 } | |
| 231 | |
| 232 /////////////////////////////////////////////////////////////////////////////// | |
| 233 // LoggingPoolAdapter - Adapts a StreamPool to supply streams with attached | |
| 234 // LoggingAdapters. | |
| 235 /////////////////////////////////////////////////////////////////////////////// | |
| 236 | |
| 237 LoggingPoolAdapter::LoggingPoolAdapter( | |
| 238 StreamPool* pool, LoggingSeverity level, const std::string& label, | |
| 239 bool binary_mode) | |
| 240 : pool_(pool), level_(level), label_(label), binary_mode_(binary_mode) { | |
| 241 } | |
| 242 | |
| 243 LoggingPoolAdapter::~LoggingPoolAdapter() { | |
| 244 for (StreamList::iterator it = recycle_bin_.begin(); | |
| 245 it != recycle_bin_.end(); ++it) { | |
| 246 delete *it; | |
| 247 } | |
| 248 } | |
| 249 | |
| 250 StreamInterface* LoggingPoolAdapter::RequestConnectedStream( | |
| 251 const SocketAddress& remote, int* err) { | |
| 252 if (StreamInterface* stream = pool_->RequestConnectedStream(remote, err)) { | |
| 253 RTC_DCHECK(SS_CLOSED != stream->GetState()); | |
| 254 std::stringstream ss; | |
| 255 ss << label_ << "(0x" << std::setfill('0') << std::hex << std::setw(8) | |
| 256 << stream << ")"; | |
| 257 LOG_V(level_) << ss.str() | |
| 258 << ((SS_OPEN == stream->GetState()) ? " Connected" | |
| 259 : " Connecting") | |
| 260 << " to " << remote; | |
| 261 if (recycle_bin_.empty()) { | |
| 262 return new LoggingAdapter(stream, level_, ss.str(), binary_mode_); | |
| 263 } | |
| 264 LoggingAdapter* logging = recycle_bin_.front(); | |
| 265 recycle_bin_.pop_front(); | |
| 266 logging->set_label(ss.str()); | |
| 267 logging->Attach(stream); | |
| 268 return logging; | |
| 269 } | |
| 270 return NULL; | |
| 271 } | |
| 272 | |
| 273 void LoggingPoolAdapter::ReturnConnectedStream(StreamInterface* stream) { | |
| 274 LoggingAdapter* logging = static_cast<LoggingAdapter*>(stream); | |
| 275 pool_->ReturnConnectedStream(logging->Detach()); | |
| 276 recycle_bin_.push_back(logging); | |
| 277 } | |
| 278 | |
| 279 /////////////////////////////////////////////////////////////////////////////// | |
| 280 | |
| 281 } // namespace rtc | |
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Issue 2694753002:
Delete httpclient.c and related files. (Closed)
