IXWebSocket/ws/ws_proxy_server.cpp
2019-11-15 17:07:31 -08:00

155 lines
6.5 KiB
C++

/*
* ws_proxy_server.cpp
* Author: Benjamin Sergeant
* Copyright (c) 2018 Machine Zone, Inc. All rights reserved.
*/
#include <iostream>
#include <ixwebsocket/IXWebSocketServer.h>
#include <sstream>
namespace ix
{
class ProxyConnectionState : public ix::ConnectionState
{
public:
void setRemoteHost(const std::string& host)
{
_remoteHost = host;
}
void setRemotePort(int port)
{
_remotePort = port;
}
ix::WebSocket& webSocket()
{
return _serverWebSocket;
}
private:
std::string _remoteHost;
int _remotePort;
ix::WebSocket _serverWebSocket;
};
int ws_proxy_server_main(int port,
const std::string& hostname,
const ix::SocketTLSOptions& tlsOptions,
const std::string& remoteHost,
int remotePort)
{
std::cout << "Listening on " << hostname << ":" << port << std::endl;
ix::WebSocketServer server(port, hostname);
server.setTLSOptions(tlsOptions);
auto factory = []() -> std::shared_ptr<ix::ConnectionState> {
return std::make_shared<ProxyConnectionState>();
};
server.setConnectionStateFactory(factory);
server.setOnConnectionCallback(
[remoteHost, remotePort](std::shared_ptr<ix::WebSocket> webSocket,
std::shared_ptr<ConnectionState> connectionState) {
auto state = std::dynamic_pointer_cast<ProxyConnectionState>(connectionState);
state->setRemoteHost(remoteHost);
state->setRemotePort(remotePort);
// Server connection
state->webSocket().setOnMessageCallback(
[webSocket, state](const WebSocketMessagePtr& msg) {
if (msg->type == ix::WebSocketMessageType::Open)
{
std::cerr << "New connection" << std::endl;
std::cerr << "id: " << state->getId() << std::endl;
std::cerr << "Uri: " << msg->openInfo.uri << std::endl;
std::cerr << "Headers:" << std::endl;
for (auto it : msg->openInfo.headers)
{
std::cerr << it.first << ": " << it.second << std::endl;
}
}
else if (msg->type == ix::WebSocketMessageType::Close)
{
std::cerr << "Closed connection"
<< " code " << msg->closeInfo.code << " reason "
<< msg->closeInfo.reason << std::endl;
}
else if (msg->type == ix::WebSocketMessageType::Error)
{
std::stringstream ss;
ss << "Connection error: " << msg->errorInfo.reason << std::endl;
ss << "#retries: " << msg->errorInfo.retries << std::endl;
ss << "Wait time(ms): " << msg->errorInfo.wait_time << std::endl;
ss << "HTTP Status: " << msg->errorInfo.http_status << std::endl;
std::cerr << ss.str();
webSocket->close(msg->closeInfo.code, msg->closeInfo.reason);
}
else if (msg->type == ix::WebSocketMessageType::Message)
{
std::cerr << "Received " << msg->wireSize << " bytes from server" << std::endl;
webSocket->send(msg->str, msg->binary);
}
});
// Client connection
webSocket->setOnMessageCallback(
[state, remoteHost](const WebSocketMessagePtr& msg) {
if (msg->type == ix::WebSocketMessageType::Open)
{
std::cerr << "New connection" << std::endl;
std::cerr << "id: " << state->getId() << std::endl;
std::cerr << "Uri: " << msg->openInfo.uri << std::endl;
std::cerr << "Headers:" << std::endl;
for (auto it : msg->openInfo.headers)
{
std::cerr << it.first << ": " << it.second << std::endl;
}
// Connect to the 'real' server
std::string url(remoteHost);
url += msg->openInfo.uri;
state->webSocket().setUrl(url);
state->webSocket().start();
}
else if (msg->type == ix::WebSocketMessageType::Close)
{
std::cerr << "Closed connection"
<< " code " << msg->closeInfo.code << " reason "
<< msg->closeInfo.reason << std::endl;
state->webSocket().close(msg->closeInfo.code, msg->closeInfo.reason);
}
else if (msg->type == ix::WebSocketMessageType::Error)
{
std::stringstream ss;
ss << "Connection error: " << msg->errorInfo.reason << std::endl;
ss << "#retries: " << msg->errorInfo.retries << std::endl;
ss << "Wait time(ms): " << msg->errorInfo.wait_time << std::endl;
ss << "HTTP Status: " << msg->errorInfo.http_status << std::endl;
std::cerr << ss.str();
}
else if (msg->type == ix::WebSocketMessageType::Message)
{
std::cerr << "Received " << msg->wireSize << " bytes from client" << std::endl;
state->webSocket().send(msg->str, msg->binary);
}
});
});
auto res = server.listen();
if (!res.first)
{
std::cerr << res.second << std::endl;
return 1;
}
server.start();
server.wait();
return 0;
}
} // namespace ix