msg->errorInfo.reason contains unwanted newline

[qknight]

description

Using msg->type == ix::WebSocketMessageType::Error and std::string reason = msg->errorInfo.reason adds an unwanted newline.

See my log

2023-05-05 14:17:51 2023-05-05 12:17:51.300122|INFO    |AppServer     |   |Websocket connection to ws://example.com/ws closed
2023-05-05 14:17:51 2023-05-05 12:17:51.305053|ERROR   |AppServer     |   |Connection error: Expecting status 101 (Switching Protocol), got 502 status connecting to ws://example.com/ws, HTTP Status line: HTTP/1.1 502 Bad Gateway
2023-05-05 14:17:51                                                        
2023-05-05 14:18:21 2023-05-05 12:18:21.427484|ERROR   |AppServer     |   |Connection error: Expecting status 101 (Switching Protocol), got 504 status connecting to ws://example.com/ws, HTTP Status line: HTTP/1.1 504 Gateway Timeout
2023-05-05 14:18:21                                                        
2023-05-05 14:18:21 2023-05-05 12:18:21.630300|ERROR   |AppServer     |   |Connection error: Expecting status 101 (Switching Protocol), got 404 status connecting to ws://example.com/ws, HTTP Status line: HTTP/1.1 404 Not Found
2023-05-05 14:18:21                                                        
2023-05-05 14:18:22 2023-05-05 12:18:22.032787|ERROR   |AppServer     |   |Connection error: Expecting status 101 (Switching Protocol), got 404 status connecting to ws://example.com/ws, HTTP Status line: HTTP/1.1 404 Not Found
2023-05-05 14:18:22                                                        
2023-05-05 14:18:22 2023-05-05 12:18:22.836496|INFO    |AppServer     |   |Websocket connection to ws://example.com/ws established

fix (hack)

} else if (msg->type == ix::WebSocketMessageType::Error) {
  std::string reason = msg->errorInfo.reason;
  reason.erase(std::remove(reason.begin(), reason.end(), '\n'), reason.cend());
  LOGL(<< "Connection error: " << reason, LogLevel_ERROR);
}

real fix

The newline is added in the variable line at:

std::stringstream ss;
ss << "Expecting status 101 (Switching Protocol), got " << status
  << " status connecting to " << url << ", HTTP Status line: " << line;

https://github.com/machinezone/IXWebSocket/blob/dfa10df5ae89697d5dad56e1845aee64d2334d70/ixwebsocket/IXWebSocketHandshake.cpp#L194