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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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| 44 STATE_FAILED | 44 STATE_FAILED |
| 45 }; | 45 }; |
| 46 | 46 |
| 47 // A TransportChannel represents one logical stream of packets that are sent | 47 // A TransportChannel represents one logical stream of packets that are sent |
| 48 // between the two sides of a session. | 48 // between the two sides of a session. |
| 49 class TransportChannel : public sigslot::has_slots<> { | 49 class TransportChannel : public sigslot::has_slots<> { |
| 50 public: | 50 public: |
| 51 explicit TransportChannel(const std::string& transport_name, int component) | 51 explicit TransportChannel(const std::string& transport_name, int component) |
| 52 : transport_name_(transport_name), | 52 : transport_name_(transport_name), |
| 53 component_(component), | 53 component_(component), |
| 54 readable_(false), | |
| 55 writable_(false), | 54 writable_(false), |
| 56 receiving_(false) {} | 55 receiving_(false) {} |
| 57 virtual ~TransportChannel() {} | 56 virtual ~TransportChannel() {} |
| 58 | 57 |
| 59 // TODO(guoweis) - Make this pure virtual once all subclasses of | 58 // TODO(guoweis) - Make this pure virtual once all subclasses of |
| 60 // TransportChannel have this defined. | 59 // TransportChannel have this defined. |
| 61 virtual TransportChannelState GetState() const { | 60 virtual TransportChannelState GetState() const { |
| 62 return TransportChannelState::STATE_CONNECTING; | 61 return TransportChannelState::STATE_CONNECTING; |
| 63 } | 62 } |
| 64 | 63 |
| 65 // TODO(mallinath) - Remove this API, as it's no longer useful. | 64 // TODO(mallinath) - Remove this API, as it's no longer useful. |
| 66 // Returns the session id of this channel. | 65 // Returns the session id of this channel. |
| 67 virtual const std::string SessionId() const { return std::string(); } | 66 virtual const std::string SessionId() const { return std::string(); } |
| 68 | 67 |
| 69 const std::string& transport_name() const { return transport_name_; } | 68 const std::string& transport_name() const { return transport_name_; } |
| 70 int component() const { return component_; } | 69 int component() const { return component_; } |
| 71 | 70 |
| 72 // Returns the readable and states of this channel. Each time one of these | 71 // Returns the states of this channel. Each time one of these states changes, |
| 73 // states changes, a signal is raised. These states are aggregated by the | 72 // a signal is raised. These states are aggregated by the TransportManager. |
| 74 // TransportManager. | |
| 75 bool readable() const { return readable_; } | |
| 76 bool writable() const { return writable_; } | 73 bool writable() const { return writable_; } |
| 77 bool receiving() const { return receiving_; } | 74 bool receiving() const { return receiving_; } |
| 78 sigslot::signal1<TransportChannel*> SignalReadableState; | |
| 79 sigslot::signal1<TransportChannel*> SignalWritableState; | 75 sigslot::signal1<TransportChannel*> SignalWritableState; |
| 80 // Emitted when the TransportChannel's ability to send has changed. | 76 // Emitted when the TransportChannel's ability to send has changed. |
| 81 sigslot::signal1<TransportChannel*> SignalReadyToSend; | 77 sigslot::signal1<TransportChannel*> SignalReadyToSend; |
| 82 sigslot::signal1<TransportChannel*> SignalReceivingState; | 78 sigslot::signal1<TransportChannel*> SignalReceivingState; |
| 83 | 79 |
| 84 // Attempts to send the given packet. The return value is < 0 on failure. | 80 // Attempts to send the given packet. The return value is < 0 on failure. |
| 85 // TODO: Remove the default argument once channel code is updated. | 81 // TODO: Remove the default argument once channel code is updated. |
| 86 virtual int SendPacket(const char* data, size_t len, | 82 virtual int SendPacket(const char* data, size_t len, |
| 87 const rtc::PacketOptions& options, | 83 const rtc::PacketOptions& options, |
| 88 int flags = 0) = 0; | 84 int flags = 0) = 0; |
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| 139 // indicates where and how we are currently sending media. | 135 // indicates where and how we are currently sending media. |
| 140 sigslot::signal2<TransportChannel*, const Candidate&> SignalRouteChange; | 136 sigslot::signal2<TransportChannel*, const Candidate&> SignalRouteChange; |
| 141 | 137 |
| 142 // Invoked when the channel is being destroyed. | 138 // Invoked when the channel is being destroyed. |
| 143 sigslot::signal1<TransportChannel*> SignalDestroyed; | 139 sigslot::signal1<TransportChannel*> SignalDestroyed; |
| 144 | 140 |
| 145 // Debugging description of this transport channel. | 141 // Debugging description of this transport channel. |
| 146 std::string ToString() const; | 142 std::string ToString() const; |
| 147 | 143 |
| 148 protected: | 144 protected: |
| 149 // Sets the readable state, signaling if necessary. | |
| 150 void set_readable(bool readable); | |
| 151 | 145 |
| 152 // Sets the writable state, signaling if necessary. | 146 // Sets the writable state, signaling if necessary. |
| 153 void set_writable(bool writable); | 147 void set_writable(bool writable); |
| 154 | 148 |
| 155 // Sets the receiving state, signaling if necessary. | 149 // Sets the receiving state, signaling if necessary. |
| 156 void set_receiving(bool receiving); | 150 void set_receiving(bool receiving); |
| 157 | 151 |
| 158 private: | 152 private: |
| 159 // Used mostly for debugging. | 153 // Used mostly for debugging. |
| 160 std::string transport_name_; | 154 std::string transport_name_; |
| 161 int component_; | 155 int component_; |
| 162 bool readable_; | |
| 163 bool writable_; | 156 bool writable_; |
| 164 bool receiving_; | 157 bool receiving_; |
| 165 | 158 |
| 166 RTC_DISALLOW_COPY_AND_ASSIGN(TransportChannel); | 159 RTC_DISALLOW_COPY_AND_ASSIGN(TransportChannel); |
| 167 }; | 160 }; |
| 168 | 161 |
| 169 } // namespace cricket | 162 } // namespace cricket |
| 170 | 163 |
| 171 #endif // WEBRTC_P2P_BASE_TRANSPORTCHANNEL_H_ | 164 #endif // WEBRTC_P2P_BASE_TRANSPORTCHANNEL_H_ |
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