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#pragma once
#include <Poco/Net/NetException.h>
#include <Poco/Util/LayeredConfiguration.h>
#include <Common/logger_useful.h>
#include "Server/TCPProtocolStackData.h"
#include <Server/IServer.h>
#include <Server/TCPHandler.h>
#include <Server/TCPServerConnectionFactory.h>
namespace Poco { class Logger; }
namespace DB
{
class TCPHandlerFactory : public TCPServerConnectionFactory
{
private:
IServer & server;
bool parse_proxy_protocol = false;
Poco::Logger * log;
std::string server_display_name;
class DummyTCPHandler : public Poco::Net::TCPServerConnection
{
public:
using Poco::Net::TCPServerConnection::TCPServerConnection;
void run() override {}
};
public:
/** parse_proxy_protocol_ - if true, expect and parse the header of PROXY protocol in every connection
* and set the information about forwarded address accordingly.
* See https://github.com/wolfeidau/proxyv2/blob/master/docs/proxy-protocol.txt
*/
TCPHandlerFactory(IServer & server_, bool secure_, bool parse_proxy_protocol_)
: server(server_), parse_proxy_protocol(parse_proxy_protocol_)
, log(&Poco::Logger::get(std::string("TCP") + (secure_ ? "S" : "") + "HandlerFactory"))
{
server_display_name = server.config().getString("display_name", getFQDNOrHostName());
}
Poco::Net::TCPServerConnection * createConnection(const Poco::Net::StreamSocket & socket, TCPServer & tcp_server) override
{
try
{
LOG_TRACE(log, "TCP Request. Address: {}", socket.peerAddress().toString());
return new TCPHandler(server, tcp_server, socket, parse_proxy_protocol, server_display_name);
}
catch (const Poco::Net::NetException &)
{
LOG_TRACE(log, "TCP Request. Client is not connected (most likely RST packet was sent).");
return new DummyTCPHandler(socket);
}
}
Poco::Net::TCPServerConnection * createConnection(const Poco::Net::StreamSocket & socket, TCPServer & tcp_server, TCPProtocolStackData & stack_data) override
{
try
{
LOG_TRACE(log, "TCP Request. Address: {}", socket.peerAddress().toString());
return new TCPHandler(server, tcp_server, socket, stack_data, server_display_name);
}
catch (const Poco::Net::NetException &)
{
LOG_TRACE(log, "TCP Request. Client is not connected (most likely RST packet was sent).");
return new DummyTCPHandler(socket);
}
}
};
}
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