No socket error when network disconnects

[sebakerckhof]

I have a little testscript like:

var WebSocket = require("faye-websocket");
var url = "ws://10.196.46.53:80/websocket";
var socket = new WebSocket.Client(url, null);

socket.on("open", function() {
    console.log("OPEN");
});
socket.on("error", function(error) {
    console.log("ERROR",error);
});
socket.on("close", function(event) {
    console.log("CLOSE",event.code,event.reason);
});
socket.on("message", function(event) {
    console.log("MESSAGE",event.data);
});

If I run it, I get the following output:

OPEN
MESSAGE {"server_id":"0"}

If I disable my network adapter I get following output:

ERROR Network error: ws://10.196.46.53:80/websocket: read ECONNRESET

However, if I just unplug my network cable, I do not get any error notifications...
Both on win7 and debian linux.

[jcoglan]

The client relies on the underliying TCP or TLS stream to report errors/closes. Can you find out which events that object is emitting when you unplug the cable, if any?

[sebakerckhof]

Okay, I thought they did, but apparently TCP or TLS sockets also don't report when a cable is unplugged.
Looks like I'll have to use a hearbeat and detect it myself.