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/*
* Copyright (C) 2022 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <functional>
#include <memory>
#include <thread>
#include "common/libs/fs/shared_fd.h"
namespace cuttlefish {
class ProxyServer {
public:
ProxyServer(SharedFD server, std::function<SharedFD()> clients_factory);
void Join();
~ProxyServer();
private:
SharedFD stop_fd_;
std::thread server_;
};
// Executes a TCP proxy
// Accept() is called on the server in a loop, for every client connection a
// target connection is created through the conn_factory callback and data is
// forwarded between the two connections.
// This function is meant to execute forever, but will return if the server is
// closed in another thread. It's recommended the caller disables the default
// behavior for SIGPIPE before calling this function, otherwise it runs the risk
// or crashing the process when a connection breaks.
void Proxy(SharedFD server, std::function<SharedFD()> conn_factory);
std::unique_ptr<ProxyServer> ProxyAsync(SharedFD server, std::function<SharedFD()> conn_factory);
} // namespace cuttlefish
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