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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 |
| 11 #ifndef WEBRTC_BASE_ASYNCTCPSOCKET_H_ | 11 #ifndef WEBRTC_BASE_ASYNCTCPSOCKET_H_ |
| 12 #define WEBRTC_BASE_ASYNCTCPSOCKET_H_ | 12 #define WEBRTC_BASE_ASYNCTCPSOCKET_H_ |
| 13 | 13 |
| 14 #include <memory> | |
| 15 | 14 |
| 16 #include "webrtc/base/asyncpacketsocket.h" | 15 // This header is deprecated and is just left here temporarily during |
| 17 #include "webrtc/base/buffer.h" | 16 // refactoring. See https://bugs.webrtc.org/7634 for more details. |
| 18 #include "webrtc/base/constructormagic.h" | 17 #include "webrtc/rtc_base/asynctcpsocket.h" |
| 19 #include "webrtc/base/socketfactory.h" | |
| 20 | |
| 21 namespace rtc { | |
| 22 | |
| 23 // Simulates UDP semantics over TCP. Send and Recv packet sizes | |
| 24 // are preserved, and drops packets silently on Send, rather than | |
| 25 // buffer them in user space. | |
| 26 class AsyncTCPSocketBase : public AsyncPacketSocket { | |
| 27 public: | |
| 28 AsyncTCPSocketBase(AsyncSocket* socket, bool listen, size_t max_packet_size); | |
| 29 ~AsyncTCPSocketBase() override; | |
| 30 | |
| 31 // Pure virtual methods to send and recv data. | |
| 32 int Send(const void *pv, size_t cb, | |
| 33 const rtc::PacketOptions& options) override = 0; | |
| 34 virtual void ProcessInput(char* data, size_t* len) = 0; | |
| 35 // Signals incoming connection. | |
| 36 virtual void HandleIncomingConnection(AsyncSocket* socket) = 0; | |
| 37 | |
| 38 SocketAddress GetLocalAddress() const override; | |
| 39 SocketAddress GetRemoteAddress() const override; | |
| 40 int SendTo(const void* pv, | |
| 41 size_t cb, | |
| 42 const SocketAddress& addr, | |
| 43 const rtc::PacketOptions& options) override; | |
| 44 int Close() override; | |
| 45 | |
| 46 State GetState() const override; | |
| 47 int GetOption(Socket::Option opt, int* value) override; | |
| 48 int SetOption(Socket::Option opt, int value) override; | |
| 49 int GetError() const override; | |
| 50 void SetError(int error) override; | |
| 51 | |
| 52 protected: | |
| 53 // Binds and connects |socket| and creates AsyncTCPSocket for | |
| 54 // it. Takes ownership of |socket|. Returns null if bind() or | |
| 55 // connect() fail (|socket| is destroyed in that case). | |
| 56 static AsyncSocket* ConnectSocket(AsyncSocket* socket, | |
| 57 const SocketAddress& bind_address, | |
| 58 const SocketAddress& remote_address); | |
| 59 virtual int SendRaw(const void* pv, size_t cb); | |
| 60 int FlushOutBuffer(); | |
| 61 // Add data to |outbuf_|. | |
| 62 void AppendToOutBuffer(const void* pv, size_t cb); | |
| 63 | |
| 64 // Helper methods for |outpos_|. | |
| 65 bool IsOutBufferEmpty() const { return outbuf_.size() == 0; } | |
| 66 void ClearOutBuffer() { outbuf_.Clear(); } | |
| 67 | |
| 68 private: | |
| 69 // Called by the underlying socket | |
| 70 void OnConnectEvent(AsyncSocket* socket); | |
| 71 void OnReadEvent(AsyncSocket* socket); | |
| 72 void OnWriteEvent(AsyncSocket* socket); | |
| 73 void OnCloseEvent(AsyncSocket* socket, int error); | |
| 74 | |
| 75 std::unique_ptr<AsyncSocket> socket_; | |
| 76 bool listen_; | |
| 77 Buffer inbuf_; | |
| 78 Buffer outbuf_; | |
| 79 size_t max_insize_; | |
| 80 size_t max_outsize_; | |
| 81 | |
| 82 RTC_DISALLOW_COPY_AND_ASSIGN(AsyncTCPSocketBase); | |
| 83 }; | |
| 84 | |
| 85 class AsyncTCPSocket : public AsyncTCPSocketBase { | |
| 86 public: | |
| 87 // Binds and connects |socket| and creates AsyncTCPSocket for | |
| 88 // it. Takes ownership of |socket|. Returns null if bind() or | |
| 89 // connect() fail (|socket| is destroyed in that case). | |
| 90 static AsyncTCPSocket* Create(AsyncSocket* socket, | |
| 91 const SocketAddress& bind_address, | |
| 92 const SocketAddress& remote_address); | |
| 93 AsyncTCPSocket(AsyncSocket* socket, bool listen); | |
| 94 ~AsyncTCPSocket() override {} | |
| 95 | |
| 96 int Send(const void* pv, | |
| 97 size_t cb, | |
| 98 const rtc::PacketOptions& options) override; | |
| 99 void ProcessInput(char* data, size_t* len) override; | |
| 100 void HandleIncomingConnection(AsyncSocket* socket) override; | |
| 101 | |
| 102 private: | |
| 103 RTC_DISALLOW_COPY_AND_ASSIGN(AsyncTCPSocket); | |
| 104 }; | |
| 105 | |
| 106 } // namespace rtc | |
| 107 | 18 |
| 108 #endif // WEBRTC_BASE_ASYNCTCPSOCKET_H_ | 19 #endif // WEBRTC_BASE_ASYNCTCPSOCKET_H_ |
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