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b5f2b17fd8
Bug: webrtc:15726 Change-Id: Icd3aca433966f76e1b200b0f4790013cce12095a Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/331820 Reviewed-by: Tomas Gunnarsson <tommi@webrtc.org> Commit-Queue: Harald Alvestrand <hta@webrtc.org> Cr-Commit-Position: refs/heads/main@{#41655}
94 lines
3 KiB
C++
94 lines
3 KiB
C++
/*
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* Copyright 2004 The WebRTC Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef RTC_BASE_PROXY_SERVER_H_
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#define RTC_BASE_PROXY_SERVER_H_
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#include <memory>
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#include <vector>
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#include "absl/memory/memory.h"
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#include "rtc_base/memory/fifo_buffer.h"
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#include "rtc_base/server_socket_adapters.h"
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#include "rtc_base/socket.h"
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#include "rtc_base/socket_address.h"
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namespace rtc {
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class SocketFactory;
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// ProxyServer is a base class that allows for easy construction of proxy
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// servers. With its helper class ProxyBinding, it contains all the necessary
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// logic for receiving and bridging connections. The specific client-server
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// proxy protocol is implemented by an instance of the AsyncProxyServerSocket
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// class; children of ProxyServer implement WrapSocket appropriately to return
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// the correct protocol handler.
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class ProxyBinding : public sigslot::has_slots<> {
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public:
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ProxyBinding(AsyncProxyServerSocket* in_socket, Socket* out_socket);
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~ProxyBinding() override;
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ProxyBinding(const ProxyBinding&) = delete;
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ProxyBinding& operator=(const ProxyBinding&) = delete;
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sigslot::signal1<ProxyBinding*> SignalDestroyed;
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private:
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void OnConnectRequest(AsyncProxyServerSocket* socket,
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const SocketAddress& addr);
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void OnInternalRead(Socket* socket);
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void OnInternalWrite(Socket* socket);
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void OnInternalClose(Socket* socket, int err);
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void OnExternalConnect(Socket* socket);
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void OnExternalRead(Socket* socket);
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void OnExternalWrite(Socket* socket);
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void OnExternalClose(Socket* socket, int err);
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static void Read(Socket* socket, FifoBuffer* buffer);
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static void Write(Socket* socket, FifoBuffer* buffer);
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void Destroy();
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static const int kBufferSize = 4096;
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std::unique_ptr<AsyncProxyServerSocket> int_socket_;
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std::unique_ptr<Socket> ext_socket_;
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bool connected_;
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FifoBuffer out_buffer_;
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FifoBuffer in_buffer_;
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};
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class ProxyServer : public sigslot::has_slots<> {
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public:
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ProxyServer(SocketFactory* int_factory,
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const SocketAddress& int_addr,
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SocketFactory* ext_factory,
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const SocketAddress& ext_ip);
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~ProxyServer() override;
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ProxyServer(const ProxyServer&) = delete;
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ProxyServer& operator=(const ProxyServer&) = delete;
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// Returns the address to which the proxy server is bound
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SocketAddress GetServerAddress();
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protected:
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void OnAcceptEvent(Socket* socket);
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virtual AsyncProxyServerSocket* WrapSocket(Socket* socket) = 0;
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private:
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SocketFactory* ext_factory_;
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SocketAddress ext_ip_;
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std::unique_ptr<Socket> server_socket_;
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std::vector<std::unique_ptr<ProxyBinding>> bindings_;
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};
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} // namespace rtc
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#endif // RTC_BASE_PROXY_SERVER_H_
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