Error: socket hang up

Created by: trusktr

I'm getting errors that look like this happening every hour or two, causing systemd to restart my nodeProxyServer.js script:

Nov 10 16:49:17 fountainsunique nodeProxyServer[24009]: throw arguments[1]; // Unhandled 'error' event
Nov 10 16:49:17 fountainsunique nodeProxyServer[24009]: ^
Nov 10 16:49:17 fountainsunique nodeProxyServer[24009]: Error: socket hang up
Nov 10 16:49:17 fountainsunique nodeProxyServer[24009]: at createHangUpError (http.js:1360:15)
Nov 10 16:49:17 fountainsunique nodeProxyServer[24009]: at ServerResponse.OutgoingMessage._writeRaw (http.js:507:26)
Nov 10 16:49:17 fountainsunique nodeProxyServer[24009]: at ServerResponse.OutgoingMessage._send (http.js:476:15)
Nov 10 16:49:17 fountainsunique nodeProxyServer[24009]: at ServerResponse.OutgoingMessage.write (http.js:740:18)
Nov 10 16:49:17 fountainsunique nodeProxyServer[24009]: at ClientRequest.proxyError (/srv/nodeProxyServer/node_modules/http-proxy/lib/node-http-proxy/http-proxy.js:211:13)
Nov 10 16:49:17 fountainsunique nodeProxyServer[24009]: at ClientRequest.g (events.js:192:14)
Nov 10 16:49:17 fountainsunique nodeProxyServer[24009]: at ClientRequest.EventEmitter.emit (events.js:96:17)
Nov 10 16:49:17 fountainsunique nodeProxyServer[24009]: at Socket.socketCloseListener (http.js:1411:9)
Nov 10 16:49:17 fountainsunique nodeProxyServer[24009]: at Socket.EventEmitter.emit (events.js:126:20)
Nov 10 16:49:17 fountainsunique nodeProxyServer[24009]: at Socket._destroy.destroyed (net.js:358:10)
Nov 10 16:49:17 fountainsunique nodeProxyServer[27651]: Proxy server started on port 80.
Nov 10 16:51:17 fountainsunique nodeProxyServer[27651]: res.end error: socket hang up

May it be related to node-http-proxy, or something else?