henrike@webrtc.org | f048872 | 2014-05-13 18:00:26 | [diff] [blame] | 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 | |
Steve Anton | 10542f2 | 2019-01-11 17:11:00 | [diff] [blame] | 11 | #ifndef RTC_BASE_ASYNC_TCP_SOCKET_H_ |
| 12 | #define RTC_BASE_ASYNC_TCP_SOCKET_H_ |
henrike@webrtc.org | f048872 | 2014-05-13 18:00:26 | [diff] [blame] | 13 | |
Yves Gerey | 988cc08 | 2018-10-23 10:03:01 | [diff] [blame] | 14 | #include <stddef.h> |
Jonas Olsson | a4d8737 | 2019-07-05 17:08:33 | [diff] [blame] | 15 | |
Per K | d07900c | 2023-11-17 09:18:25 | [diff] [blame] | 16 | #include <cstdint> |
Henrik Kjellander | ec78f1c | 2017-06-29 05:52:50 | [diff] [blame] | 17 | #include <memory> |
jbauch | 555604a | 2016-04-26 10:13:22 | [diff] [blame] | 18 | |
Per K | 357947f | 2023-11-27 12:03:52 | [diff] [blame] | 19 | #include "api/array_view.h" |
Steve Anton | 10542f2 | 2019-01-11 17:11:00 | [diff] [blame] | 20 | #include "rtc_base/async_packet_socket.h" |
Yves Gerey | 988cc08 | 2018-10-23 10:03:01 | [diff] [blame] | 21 | #include "rtc_base/buffer.h" |
Yves Gerey | 988cc08 | 2018-10-23 10:03:01 | [diff] [blame] | 22 | #include "rtc_base/socket.h" |
Steve Anton | 10542f2 | 2019-01-11 17:11:00 | [diff] [blame] | 23 | #include "rtc_base/socket_address.h" |
Henrik Kjellander | ec78f1c | 2017-06-29 05:52:50 | [diff] [blame] | 24 | |
| 25 | namespace rtc { |
| 26 | |
| 27 | // Simulates UDP semantics over TCP. Send and Recv packet sizes |
| 28 | // are preserved, and drops packets silently on Send, rather than |
| 29 | // buffer them in user space. |
| 30 | class AsyncTCPSocketBase : public AsyncPacketSocket { |
| 31 | public: |
Niels Möller | d30ece1 | 2021-10-19 08:11:02 | [diff] [blame] | 32 | AsyncTCPSocketBase(Socket* socket, size_t max_packet_size); |
Henrik Kjellander | ec78f1c | 2017-06-29 05:52:50 | [diff] [blame] | 33 | ~AsyncTCPSocketBase() override; |
| 34 | |
Byoungchan Lee | 14af762 | 2022-01-11 20:24:58 | [diff] [blame] | 35 | AsyncTCPSocketBase(const AsyncTCPSocketBase&) = delete; |
| 36 | AsyncTCPSocketBase& operator=(const AsyncTCPSocketBase&) = delete; |
| 37 | |
Henrik Kjellander | ec78f1c | 2017-06-29 05:52:50 | [diff] [blame] | 38 | // Pure virtual methods to send and recv data. |
Yves Gerey | 665174f | 2018-06-19 13:03:05 | [diff] [blame] | 39 | int Send(const void* pv, |
| 40 | size_t cb, |
| 41 | const rtc::PacketOptions& options) override = 0; |
Per K | 357947f | 2023-11-27 12:03:52 | [diff] [blame] | 42 | // Must return the number of bytes processed. |
| 43 | virtual size_t ProcessInput(rtc::ArrayView<const uint8_t> data) = 0; |
Henrik Kjellander | ec78f1c | 2017-06-29 05:52:50 | [diff] [blame] | 44 | |
| 45 | SocketAddress GetLocalAddress() const override; |
| 46 | SocketAddress GetRemoteAddress() const override; |
| 47 | int SendTo(const void* pv, |
| 48 | size_t cb, |
| 49 | const SocketAddress& addr, |
| 50 | const rtc::PacketOptions& options) override; |
| 51 | int Close() override; |
| 52 | |
| 53 | State GetState() const override; |
| 54 | int GetOption(Socket::Option opt, int* value) override; |
| 55 | int SetOption(Socket::Option opt, int value) override; |
| 56 | int GetError() const override; |
| 57 | void SetError(int error) override; |
| 58 | |
| 59 | protected: |
Artem Titov | 96e3b99 | 2021-07-26 14:03:14 | [diff] [blame] | 60 | // Binds and connects `socket` and creates AsyncTCPSocket for |
| 61 | // it. Takes ownership of `socket`. Returns null if bind() or |
| 62 | // connect() fail (`socket` is destroyed in that case). |
Niels Möller | d0b8879 | 2021-08-12 08:32:30 | [diff] [blame] | 63 | static Socket* ConnectSocket(Socket* socket, |
| 64 | const SocketAddress& bind_address, |
| 65 | const SocketAddress& remote_address); |
Henrik Kjellander | ec78f1c | 2017-06-29 05:52:50 | [diff] [blame] | 66 | int FlushOutBuffer(); |
Artem Titov | 96e3b99 | 2021-07-26 14:03:14 | [diff] [blame] | 67 | // Add data to `outbuf_`. |
Henrik Kjellander | ec78f1c | 2017-06-29 05:52:50 | [diff] [blame] | 68 | void AppendToOutBuffer(const void* pv, size_t cb); |
| 69 | |
Artem Titov | 96e3b99 | 2021-07-26 14:03:14 | [diff] [blame] | 70 | // Helper methods for `outpos_`. |
Henrik Kjellander | ec78f1c | 2017-06-29 05:52:50 | [diff] [blame] | 71 | bool IsOutBufferEmpty() const { return outbuf_.size() == 0; } |
| 72 | void ClearOutBuffer() { outbuf_.Clear(); } |
| 73 | |
| 74 | private: |
| 75 | // Called by the underlying socket |
Niels Möller | d0b8879 | 2021-08-12 08:32:30 | [diff] [blame] | 76 | void OnConnectEvent(Socket* socket); |
| 77 | void OnReadEvent(Socket* socket); |
| 78 | void OnWriteEvent(Socket* socket); |
| 79 | void OnCloseEvent(Socket* socket, int error); |
Henrik Kjellander | ec78f1c | 2017-06-29 05:52:50 | [diff] [blame] | 80 | |
Niels Möller | d0b8879 | 2021-08-12 08:32:30 | [diff] [blame] | 81 | std::unique_ptr<Socket> socket_; |
Henrik Kjellander | ec78f1c | 2017-06-29 05:52:50 | [diff] [blame] | 82 | Buffer inbuf_; |
| 83 | Buffer outbuf_; |
| 84 | size_t max_insize_; |
| 85 | size_t max_outsize_; |
Henrik Kjellander | ec78f1c | 2017-06-29 05:52:50 | [diff] [blame] | 86 | }; |
| 87 | |
| 88 | class AsyncTCPSocket : public AsyncTCPSocketBase { |
| 89 | public: |
Artem Titov | 96e3b99 | 2021-07-26 14:03:14 | [diff] [blame] | 90 | // Binds and connects `socket` and creates AsyncTCPSocket for |
| 91 | // it. Takes ownership of `socket`. Returns null if bind() or |
| 92 | // connect() fail (`socket` is destroyed in that case). |
Niels Möller | d0b8879 | 2021-08-12 08:32:30 | [diff] [blame] | 93 | static AsyncTCPSocket* Create(Socket* socket, |
Henrik Kjellander | ec78f1c | 2017-06-29 05:52:50 | [diff] [blame] | 94 | const SocketAddress& bind_address, |
| 95 | const SocketAddress& remote_address); |
Niels Möller | d30ece1 | 2021-10-19 08:11:02 | [diff] [blame] | 96 | explicit AsyncTCPSocket(Socket* socket); |
Henrik Kjellander | ec78f1c | 2017-06-29 05:52:50 | [diff] [blame] | 97 | ~AsyncTCPSocket() override {} |
| 98 | |
Byoungchan Lee | 14af762 | 2022-01-11 20:24:58 | [diff] [blame] | 99 | AsyncTCPSocket(const AsyncTCPSocket&) = delete; |
| 100 | AsyncTCPSocket& operator=(const AsyncTCPSocket&) = delete; |
| 101 | |
Henrik Kjellander | ec78f1c | 2017-06-29 05:52:50 | [diff] [blame] | 102 | int Send(const void* pv, |
| 103 | size_t cb, |
| 104 | const rtc::PacketOptions& options) override; |
Per K | 357947f | 2023-11-27 12:03:52 | [diff] [blame] | 105 | size_t ProcessInput(rtc::ArrayView<const uint8_t>) override; |
Henrik Kjellander | ec78f1c | 2017-06-29 05:52:50 | [diff] [blame] | 106 | }; |
| 107 | |
Niels Möller | d30ece1 | 2021-10-19 08:11:02 | [diff] [blame] | 108 | class AsyncTcpListenSocket : public AsyncListenSocket { |
| 109 | public: |
| 110 | explicit AsyncTcpListenSocket(std::unique_ptr<Socket> socket); |
| 111 | |
| 112 | State GetState() const override; |
| 113 | SocketAddress GetLocalAddress() const override; |
| 114 | |
Niels Möller | d30ece1 | 2021-10-19 08:11:02 | [diff] [blame] | 115 | virtual void HandleIncomingConnection(rtc::Socket* socket); |
| 116 | |
| 117 | private: |
| 118 | // Called by the underlying socket |
| 119 | void OnReadEvent(Socket* socket); |
| 120 | |
| 121 | std::unique_ptr<Socket> socket_; |
| 122 | }; |
| 123 | |
Henrik Kjellander | ec78f1c | 2017-06-29 05:52:50 | [diff] [blame] | 124 | } // namespace rtc |
henrike@webrtc.org | f048872 | 2014-05-13 18:00:26 | [diff] [blame] | 125 | |
Steve Anton | 10542f2 | 2019-01-11 17:11:00 | [diff] [blame] | 126 | #endif // RTC_BASE_ASYNC_TCP_SOCKET_H_ |