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1 /* | 1 /* |
2 * Copyright 2004 The WebRTC Project Authors. All rights reserved. | 2 * Copyright 2004 The WebRTC Project Authors. All rights reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 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 | 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 | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
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36 #include "webrtc/base/asyncpacketsocket.h" | 36 #include "webrtc/base/asyncpacketsocket.h" |
37 #include "webrtc/base/sigslot.h" | 37 #include "webrtc/base/sigslot.h" |
38 | 38 |
39 namespace cricket { | 39 namespace cricket { |
40 | 40 |
41 // Enum for UMA metrics, used to record whether the channel is | 41 // Enum for UMA metrics, used to record whether the channel is |
42 // connected/connecting/disconnected when ICE restart happens. | 42 // connected/connecting/disconnected when ICE restart happens. |
43 enum class IceRestartState { CONNECTING, CONNECTED, DISCONNECTED, MAX_VALUE }; | 43 enum class IceRestartState { CONNECTING, CONNECTED, DISCONNECTED, MAX_VALUE }; |
44 | 44 |
45 extern const int WEAK_PING_INTERVAL; | 45 extern const int WEAK_PING_INTERVAL; |
46 extern const int STABILIZING_WRITABLE_CONNECTION_PING_INTERVAL; | 46 extern const int WEAK_OR_STABILIZING_WRITABLE_CONNECTION_PING_INTERVAL; |
47 extern const int STABLE_WRITABLE_CONNECTION_PING_INTERVAL; | 47 extern const int STRONG_AND_STABLE_WRITABLE_CONNECTION_PING_INTERVAL; |
48 static const int MIN_PINGS_AT_WEAK_PING_INTERVAL = 3; | 48 static const int MIN_PINGS_AT_WEAK_PING_INTERVAL = 3; |
49 | 49 |
50 // Adds the port on which the candidate originated. | 50 // Adds the port on which the candidate originated. |
51 class RemoteCandidate : public Candidate { | 51 class RemoteCandidate : public Candidate { |
52 public: | 52 public: |
53 RemoteCandidate(const Candidate& c, PortInterface* origin_port) | 53 RemoteCandidate(const Candidate& c, PortInterface* origin_port) |
54 : Candidate(c), origin_port_(origin_port) {} | 54 : Candidate(c), origin_port_(origin_port) {} |
55 | 55 |
56 PortInterface* origin_port() { return origin_port_; } | 56 PortInterface* origin_port() { return origin_port_; } |
57 | 57 |
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254 bool CreateConnection(PortInterface* port, | 254 bool CreateConnection(PortInterface* port, |
255 const Candidate& remote_candidate, | 255 const Candidate& remote_candidate, |
256 PortInterface* origin_port); | 256 PortInterface* origin_port); |
257 bool FindConnection(cricket::Connection* connection) const; | 257 bool FindConnection(cricket::Connection* connection) const; |
258 | 258 |
259 uint32_t GetRemoteCandidateGeneration(const Candidate& candidate); | 259 uint32_t GetRemoteCandidateGeneration(const Candidate& candidate); |
260 bool IsDuplicateRemoteCandidate(const Candidate& candidate); | 260 bool IsDuplicateRemoteCandidate(const Candidate& candidate); |
261 void RememberRemoteCandidate(const Candidate& remote_candidate, | 261 void RememberRemoteCandidate(const Candidate& remote_candidate, |
262 PortInterface* origin_port); | 262 PortInterface* origin_port); |
263 bool IsPingable(const Connection* conn, int64_t now) const; | 263 bool IsPingable(const Connection* conn, int64_t now) const; |
264 bool IsSelectedConnectionPingable(int64_t now); | 264 // Whether a writable connection is past its ping interval and needs to be |
| 265 // pinged again. |
| 266 bool WritableConnectionPastPingInterval(const Connection* conn, |
| 267 int64_t now) const; |
265 int CalculateActiveWritablePingInterval(const Connection* conn, | 268 int CalculateActiveWritablePingInterval(const Connection* conn, |
266 int64_t now) const; | 269 int64_t now) const; |
267 void PingConnection(Connection* conn); | 270 void PingConnection(Connection* conn); |
268 void AddAllocatorSession(std::unique_ptr<PortAllocatorSession> session); | 271 void AddAllocatorSession(std::unique_ptr<PortAllocatorSession> session); |
269 void AddConnection(Connection* connection); | 272 void AddConnection(Connection* connection); |
270 | 273 |
271 void OnPortReady(PortAllocatorSession *session, PortInterface* port); | 274 void OnPortReady(PortAllocatorSession *session, PortInterface* port); |
272 void OnPortsPruned(PortAllocatorSession* session, | 275 void OnPortsPruned(PortAllocatorSession* session, |
273 const std::vector<PortInterface*>& ports); | 276 const std::vector<PortInterface*>& ports); |
274 void OnCandidatesReady(PortAllocatorSession *session, | 277 void OnCandidatesReady(PortAllocatorSession *session, |
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310 // Returns true if we should switch to the new connection. | 313 // Returns true if we should switch to the new connection. |
311 // sets |missed_receiving_unchanged_threshold| to true if either | 314 // sets |missed_receiving_unchanged_threshold| to true if either |
312 // the selected connection or the new connection missed its | 315 // the selected connection or the new connection missed its |
313 // receiving-unchanged-threshold. | 316 // receiving-unchanged-threshold. |
314 bool ShouldSwitchSelectedConnection( | 317 bool ShouldSwitchSelectedConnection( |
315 Connection* new_connection, | 318 Connection* new_connection, |
316 bool* missed_receiving_unchanged_threshold) const; | 319 bool* missed_receiving_unchanged_threshold) const; |
317 // Returns true if the new_connection is selected for transmission. | 320 // Returns true if the new_connection is selected for transmission. |
318 bool MaybeSwitchSelectedConnection(Connection* new_connection, | 321 bool MaybeSwitchSelectedConnection(Connection* new_connection, |
319 const std::string& reason); | 322 const std::string& reason); |
320 | 323 // Gets the best connection for each network. |
| 324 std::map<rtc::Network*, Connection*> GetBestConnectionByNetwork() const; |
| 325 std::vector<Connection*> GetBestWritableConnectionPerNetwork() const; |
321 void PruneConnections(); | 326 void PruneConnections(); |
322 bool IsBackupConnection(const Connection* conn) const; | 327 bool IsBackupConnection(const Connection* conn) const; |
323 | 328 |
324 Connection* FindConnectionToPing(int64_t now); | |
325 Connection* FindOldestConnectionNeedingTriggeredCheck(int64_t now); | 329 Connection* FindOldestConnectionNeedingTriggeredCheck(int64_t now); |
326 // Between |conn1| and |conn2|, this function returns the one which should | 330 // Between |conn1| and |conn2|, this function returns the one which should |
327 // be pinged first. | 331 // be pinged first. |
328 Connection* SelectMostPingableConnection(Connection* conn1, | 332 Connection* MorePingable(Connection* conn1, Connection* conn2); |
329 Connection* conn2); | |
330 // Select the connection which is Relay/Relay. If both of them are, | 333 // Select the connection which is Relay/Relay. If both of them are, |
331 // UDP relay protocol takes precedence. | 334 // UDP relay protocol takes precedence. |
332 Connection* MostLikelyToWork(Connection* conn1, Connection* conn2); | 335 Connection* MostLikelyToWork(Connection* conn1, Connection* conn2); |
333 // Compare the last_ping_sent time and return the one least recently pinged. | 336 // Compare the last_ping_sent time and return the one least recently pinged. |
334 Connection* LeastRecentlyPinged(Connection* conn1, Connection* conn2); | 337 Connection* LeastRecentlyPinged(Connection* conn1, Connection* conn2); |
335 | 338 |
336 // Returns the latest remote ICE parameters or nullptr if there are no remote | 339 // Returns the latest remote ICE parameters or nullptr if there are no remote |
337 // ICE parameters yet. | 340 // ICE parameters yet. |
338 IceParameters* remote_ice() { | 341 IceParameters* remote_ice() { |
339 return remote_ice_parameters_.empty() ? nullptr | 342 return remote_ice_parameters_.empty() ? nullptr |
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400 uint32_t nomination_ = 0; | 403 uint32_t nomination_ = 0; |
401 | 404 |
402 webrtc::MetricsObserverInterface* metrics_observer_ = nullptr; | 405 webrtc::MetricsObserverInterface* metrics_observer_ = nullptr; |
403 | 406 |
404 RTC_DISALLOW_COPY_AND_ASSIGN(P2PTransportChannel); | 407 RTC_DISALLOW_COPY_AND_ASSIGN(P2PTransportChannel); |
405 }; | 408 }; |
406 | 409 |
407 } // namespace cricket | 410 } // namespace cricket |
408 | 411 |
409 #endif // WEBRTC_P2P_BASE_P2PTRANSPORTCHANNEL_H_ | 412 #endif // WEBRTC_P2P_BASE_P2PTRANSPORTCHANNEL_H_ |
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