void handleRequest(HTTPServerRequest& request, HTTPServerResponse& response)
{
Application& app = Application::instance();
try
{
std::string proto = request.get("Sec-WebSocket-Protocol", "");
Poco::SharedPtr<Poco::Net::WebSocket> pWebSocket;
if (proto == "com.appinf.webtunnel.server/1.0")
{
response.set("Sec-WebSocket-Protocol", proto);
pWebSocket = new Poco::Net::WebSocket(request, response);
_portReflector.addServerSocket(pWebSocket, "ac9667bb-6032-4267-af61-9a7aafd40479");
}
else if (proto == "com.appinf.webtunnel.client/1.0")
{
response.set("Sec-WebSocket-Protocol", proto);
std::string portStr = request.get("X-WebTunnel-RemotePort", "");
unsigned port;
if (!portStr.empty() && Poco::NumberParser::tryParseUnsigned(portStr, port) && port > 0 && port < 65536)
{
pWebSocket = new Poco::Net::WebSocket(request, response);
try
{
_portReflector.addClientSocket(pWebSocket, "ac9667bb-6032-4267-af61-9a7aafd40479", static_cast<Poco::UInt16>(port));
}
catch (Poco::NotFoundException&)
{
pWebSocket->shutdown(Poco::Net::WebSocket::WS_UNEXPECTED_CONDITION, "No connection to target available");
}
}
else
{
pWebSocket = new Poco::Net::WebSocket(request, response);
pWebSocket->shutdown(Poco::Net::WebSocket::WS_UNEXPECTED_CONDITION, "Missing or invalid X-WebTunnel-RemotePort header");
}
}
else
{
pWebSocket = new Poco::Net::WebSocket(request, response);
pWebSocket->shutdown(Poco::Net::WebSocket::WS_PROTOCOL_ERROR);
}
}
catch (WebSocketException& exc)
{
app.logger().log(exc);
switch (exc.code())
{
case Poco::Net::WebSocket::WS_ERR_HANDSHAKE_UNSUPPORTED_VERSION:
response.set("Sec-WebSocket-Version", WebSocket::WEBSOCKET_VERSION);
// fallthrough
case Poco::Net::WebSocket::WS_ERR_NO_HANDSHAKE:
case Poco::Net::WebSocket::WS_ERR_HANDSHAKE_NO_VERSION:
case Poco::Net::WebSocket::WS_ERR_HANDSHAKE_NO_KEY:
response.setStatusAndReason(HTTPResponse::HTTP_BAD_REQUEST);
response.setContentLength(0);
response.send();
break;
}
}
}
void LocalPortForwarder::forward(Poco::Net::StreamSocket& socket)
{
if (_logger.debug())
{
_logger.debug(Poco::format("Local connection accepted, creating forwarding connection to %s, remote port %hu", _remoteURI.toString(), _remotePort));
}
try
{
std::string path(_remoteURI.getPathEtc());
if (path.empty()) path = "/";
Poco::Net::HTTPRequest request(Poco::Net::HTTPRequest::HTTP_POST, path, Poco::Net::HTTPRequest::HTTP_1_1);
request.set(SEC_WEBSOCKET_PROTOCOL, WEBTUNNEL_PROTOCOL);
request.set(X_WEBTUNNEL_REMOTEPORT, Poco::NumberFormatter::format(_remotePort));
Poco::Net::HTTPResponse response;
Poco::SharedPtr<Poco::Net::WebSocket> pWebSocket = _pWebSocketFactory->createWebSocket(_remoteURI, request, response);
if (response.get(SEC_WEBSOCKET_PROTOCOL, "") != WEBTUNNEL_PROTOCOL)
{
_logger.error("The remote host does not support the WebTunnel protocol.");
pWebSocket->shutdown(Poco::Net::WebSocket::WS_PROTOCOL_ERROR);
pWebSocket->close();
socket.close();
return;
}
_pDispatcher->addSocket(socket, new StreamSocketToWebSocketForwarder(_pDispatcher, pWebSocket), _localTimeout);
_pDispatcher->addSocket(*pWebSocket, new WebSocketToStreamSocketForwarder(_pDispatcher, socket), _remoteTimeout);
}
catch (Poco::Exception& exc)
{
_logger.error(Poco::format("Failed to open forwarding connection: %s", exc.displayText()));
socket.close();
}
}
void WebEventServiceImpl::shutdownImpl(Poco::SharedPtr<Poco::Net::WebSocket> pWS, Poco::UInt16 statusCode, const std::string& statusMessage, bool passive)
{
//_pContext->logger().notice("Shutting down WebSocket.");
try
{
pWS->shutdown(statusCode, statusMessage);
}
catch (Poco::Exception& exc)
{
_pContext->logger().notice("Error while shutting down WebSocket: " + exc.displayText());
passive = true; // don't wait for client confirmation
}
if (!passive)
{
if (pWS->poll(Poco::Timespan(WEBEVENT_SHUTDOWN_TIMEOUT, 0), Poco::Net::Socket::SELECT_READ))
{
Poco::Buffer<char> buffer(4096);
int flags;
pWS->receiveFrame(buffer.begin(), buffer.size(), flags);
if (flags & Poco::Net::WebSocket::FRAME_OP_CLOSE)
{
pWS->close();
return;
}
}
_pContext->logger().notice("Client failed to confirm shutdown.");
}
pWS->close();
}