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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 "webrtc/p2p/base/transport.h" | |
| 12 #include "webrtc/p2p/base/transportchannelimpl.h" | |
| 13 #include "webrtc/p2p/base/transportchannelproxy.h" | |
| 14 #include "webrtc/base/common.h" | |
| 15 #include "webrtc/base/logging.h" | |
| 16 #include "webrtc/base/thread.h" | |
| 17 | |
| 18 namespace cricket { | |
| 19 | |
| 20 enum { | |
| 21 MSG_UPDATESTATE, | |
| 22 }; | |
| 23 | |
| 24 TransportChannelProxy::TransportChannelProxy(const std::string& content_name, | |
| 25 int component) | |
| 26 : TransportChannel(content_name, component), | |
| 27 impl_(NULL) { | |
| 28 worker_thread_ = rtc::Thread::Current(); | |
| 29 } | |
| 30 | |
| 31 TransportChannelProxy::~TransportChannelProxy() { | |
| 32 // Clearing any pending signal. | |
| 33 worker_thread_->Clear(this); | |
| 34 if (impl_) { | |
| 35 impl_->GetTransport()->DestroyChannel(impl_->component()); | |
| 36 } | |
| 37 } | |
| 38 | |
| 39 void TransportChannelProxy::SetImplementation(TransportChannelImpl* impl) { | |
| 40 ASSERT(rtc::Thread::Current() == worker_thread_); | |
| 41 | |
| 42 if (impl == impl_) { | |
| 43 // Ignore if the |impl| has already been set. | |
| 44 LOG(LS_WARNING) << "Ignored TransportChannelProxy::SetImplementation call " | |
| 45 << "with a same impl as the existing one."; | |
| 46 return; | |
| 47 } | |
| 48 | |
| 49 // Destroy any existing impl_. | |
| 50 if (impl_) { | |
| 51 impl_->GetTransport()->DestroyChannel(impl_->component()); | |
| 52 } | |
| 53 | |
| 54 // Adopt the supplied impl, and connect to its signals. | |
| 55 impl_ = impl; | |
| 56 | |
| 57 if (impl_) { | |
| 58 impl_->SignalWritableState.connect( | |
| 59 this, &TransportChannelProxy::OnWritableState); | |
| 60 impl_->SignalReceivingState.connect( | |
| 61 this, &TransportChannelProxy::OnReceivingState); | |
| 62 impl_->SignalReadPacket.connect( | |
| 63 this, &TransportChannelProxy::OnReadPacket); | |
| 64 impl_->SignalReadyToSend.connect( | |
| 65 this, &TransportChannelProxy::OnReadyToSend); | |
| 66 impl_->SignalRouteChange.connect( | |
| 67 this, &TransportChannelProxy::OnRouteChange); | |
| 68 for (const auto& pair : options_) { | |
| 69 impl_->SetOption(pair.first, pair.second); | |
| 70 } | |
| 71 | |
| 72 // Push down the SRTP ciphers, if any were set. | |
| 73 if (!pending_srtp_ciphers_.empty()) { | |
| 74 impl_->SetSrtpCiphers(pending_srtp_ciphers_); | |
| 75 } | |
| 76 } | |
| 77 | |
| 78 // Post ourselves a message to see if we need to fire state callbacks. | |
| 79 worker_thread_->Post(this, MSG_UPDATESTATE); | |
| 80 } | |
| 81 | |
| 82 int TransportChannelProxy::SendPacket(const char* data, size_t len, | |
| 83 const rtc::PacketOptions& options, | |
| 84 int flags) { | |
| 85 ASSERT(rtc::Thread::Current() == worker_thread_); | |
| 86 // Fail if we don't have an impl yet. | |
| 87 if (!impl_) { | |
| 88 return -1; | |
| 89 } | |
| 90 return impl_->SendPacket(data, len, options, flags); | |
| 91 } | |
| 92 | |
| 93 int TransportChannelProxy::SetOption(rtc::Socket::Option opt, int value) { | |
| 94 ASSERT(rtc::Thread::Current() == worker_thread_); | |
| 95 options_.push_back(OptionPair(opt, value)); | |
| 96 if (!impl_) { | |
| 97 return 0; | |
| 98 } | |
| 99 return impl_->SetOption(opt, value); | |
| 100 } | |
| 101 | |
| 102 bool TransportChannelProxy::GetOption(rtc::Socket::Option opt, int* value) { | |
| 103 ASSERT(rtc::Thread::Current() == worker_thread_); | |
| 104 if (impl_) { | |
| 105 return impl_->GetOption(opt, value); | |
| 106 } | |
| 107 | |
| 108 for (const auto& pair : options_) { | |
| 109 if (pair.first == opt) { | |
| 110 *value = pair.second; | |
| 111 return true; | |
| 112 } | |
| 113 } | |
| 114 return false; | |
| 115 } | |
| 116 | |
| 117 int TransportChannelProxy::GetError() { | |
| 118 ASSERT(rtc::Thread::Current() == worker_thread_); | |
| 119 if (!impl_) { | |
| 120 return 0; | |
| 121 } | |
| 122 return impl_->GetError(); | |
| 123 } | |
| 124 | |
| 125 TransportChannelState TransportChannelProxy::GetState() const { | |
| 126 ASSERT(rtc::Thread::Current() == worker_thread_); | |
| 127 if (!impl_) { | |
| 128 return TransportChannelState::STATE_CONNECTING; | |
| 129 } | |
| 130 return impl_->GetState(); | |
| 131 } | |
| 132 | |
| 133 bool TransportChannelProxy::GetStats(ConnectionInfos* infos) { | |
| 134 ASSERT(rtc::Thread::Current() == worker_thread_); | |
| 135 if (!impl_) { | |
| 136 return false; | |
| 137 } | |
| 138 return impl_->GetStats(infos); | |
| 139 } | |
| 140 | |
| 141 bool TransportChannelProxy::IsDtlsActive() const { | |
| 142 ASSERT(rtc::Thread::Current() == worker_thread_); | |
| 143 if (!impl_) { | |
| 144 return false; | |
| 145 } | |
| 146 return impl_->IsDtlsActive(); | |
| 147 } | |
| 148 | |
| 149 bool TransportChannelProxy::GetSslRole(rtc::SSLRole* role) const { | |
| 150 ASSERT(rtc::Thread::Current() == worker_thread_); | |
| 151 if (!impl_) { | |
| 152 return false; | |
| 153 } | |
| 154 return impl_->GetSslRole(role); | |
| 155 } | |
| 156 | |
| 157 bool TransportChannelProxy::SetSslRole(rtc::SSLRole role) { | |
| 158 ASSERT(rtc::Thread::Current() == worker_thread_); | |
| 159 if (!impl_) { | |
| 160 return false; | |
| 161 } | |
| 162 return impl_->SetSslRole(role); | |
| 163 } | |
| 164 | |
| 165 bool TransportChannelProxy::SetSrtpCiphers(const std::vector<std::string>& | |
| 166 ciphers) { | |
| 167 ASSERT(rtc::Thread::Current() == worker_thread_); | |
| 168 pending_srtp_ciphers_ = ciphers; // Cache so we can send later, but always | |
| 169 // set so it stays consistent. | |
| 170 if (impl_) { | |
| 171 return impl_->SetSrtpCiphers(ciphers); | |
| 172 } | |
| 173 return true; | |
| 174 } | |
| 175 | |
| 176 bool TransportChannelProxy::GetSrtpCipher(std::string* cipher) { | |
| 177 ASSERT(rtc::Thread::Current() == worker_thread_); | |
| 178 if (!impl_) { | |
| 179 return false; | |
| 180 } | |
| 181 return impl_->GetSrtpCipher(cipher); | |
| 182 } | |
| 183 | |
| 184 bool TransportChannelProxy::GetSslCipher(std::string* cipher) { | |
| 185 ASSERT(rtc::Thread::Current() == worker_thread_); | |
| 186 if (!impl_) { | |
| 187 return false; | |
| 188 } | |
| 189 return impl_->GetSslCipher(cipher); | |
| 190 } | |
| 191 | |
| 192 rtc::scoped_refptr<rtc::RTCCertificate> | |
| 193 TransportChannelProxy::GetLocalCertificate() const { | |
| 194 ASSERT(rtc::Thread::Current() == worker_thread_); | |
| 195 if (!impl_) { | |
| 196 return nullptr; | |
| 197 } | |
| 198 return impl_->GetLocalCertificate(); | |
| 199 } | |
| 200 | |
| 201 bool TransportChannelProxy::GetRemoteSSLCertificate( | |
| 202 rtc::SSLCertificate** cert) const { | |
| 203 ASSERT(rtc::Thread::Current() == worker_thread_); | |
| 204 if (!impl_) { | |
| 205 return false; | |
| 206 } | |
| 207 return impl_->GetRemoteSSLCertificate(cert); | |
| 208 } | |
| 209 | |
| 210 bool TransportChannelProxy::ExportKeyingMaterial(const std::string& label, | |
| 211 const uint8* context, | |
| 212 size_t context_len, | |
| 213 bool use_context, | |
| 214 uint8* result, | |
| 215 size_t result_len) { | |
| 216 ASSERT(rtc::Thread::Current() == worker_thread_); | |
| 217 if (!impl_) { | |
| 218 return false; | |
| 219 } | |
| 220 return impl_->ExportKeyingMaterial(label, context, context_len, use_context, | |
| 221 result, result_len); | |
| 222 } | |
| 223 | |
| 224 IceRole TransportChannelProxy::GetIceRole() const { | |
| 225 ASSERT(rtc::Thread::Current() == worker_thread_); | |
| 226 if (!impl_) { | |
| 227 return ICEROLE_UNKNOWN; | |
| 228 } | |
| 229 return impl_->GetIceRole(); | |
| 230 } | |
| 231 | |
| 232 void TransportChannelProxy::OnWritableState(TransportChannel* channel) { | |
| 233 ASSERT(rtc::Thread::Current() == worker_thread_); | |
| 234 ASSERT(channel == impl_); | |
| 235 set_writable(impl_->writable()); | |
| 236 // Note: SignalWritableState fired by set_writable. | |
| 237 } | |
| 238 | |
| 239 void TransportChannelProxy::OnReceivingState(TransportChannel* channel) { | |
| 240 ASSERT(rtc::Thread::Current() == worker_thread_); | |
| 241 ASSERT(channel == impl_); | |
| 242 set_receiving(impl_->receiving()); | |
| 243 // Note: SignalReceivingState fired by set_receiving. | |
| 244 } | |
| 245 | |
| 246 void TransportChannelProxy::OnReadPacket( | |
| 247 TransportChannel* channel, const char* data, size_t size, | |
| 248 const rtc::PacketTime& packet_time, int flags) { | |
| 249 ASSERT(rtc::Thread::Current() == worker_thread_); | |
| 250 ASSERT(channel == impl_); | |
| 251 SignalReadPacket(this, data, size, packet_time, flags); | |
| 252 } | |
| 253 | |
| 254 void TransportChannelProxy::OnReadyToSend(TransportChannel* channel) { | |
| 255 ASSERT(rtc::Thread::Current() == worker_thread_); | |
| 256 ASSERT(channel == impl_); | |
| 257 SignalReadyToSend(this); | |
| 258 } | |
| 259 | |
| 260 void TransportChannelProxy::OnRouteChange(TransportChannel* channel, | |
| 261 const Candidate& candidate) { | |
| 262 ASSERT(rtc::Thread::Current() == worker_thread_); | |
| 263 ASSERT(channel == impl_); | |
| 264 SignalRouteChange(this, candidate); | |
| 265 } | |
| 266 | |
| 267 void TransportChannelProxy::OnMessage(rtc::Message* msg) { | |
| 268 ASSERT(rtc::Thread::Current() == worker_thread_); | |
| 269 if (msg->message_id == MSG_UPDATESTATE) { | |
| 270 // If impl_ is already receiving or writable, push up those signals. | |
| 271 set_writable(impl_ ? impl_->writable() : false); | |
| 272 set_receiving(impl_ ? impl_->receiving() : false); | |
| 273 } | |
| 274 } | |
| 275 | |
| 276 } // namespace cricket | |
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Chromium Code Reviews
Issue 1350523003:
TransportController refactoring. (Closed)
Base URL: https://chromium.googlesource.com/external/webrtc.git@master