node.js websocket crashes when client disconnect

Question

I am very new to NodeJS and Websockets, but i am trying to play with it.

What i do is read incoming datas from Serial port, then send these dat

Answer 1

I think, you should remove the socket from your CLIENTS array on both close and error event. Otherwise it tries to send a message to a socket that is closed.

Answer 2

Try this while sending data to client: - socket is my current web socket object.It overwrites the default >WebSocket.js class condition that throws "not-opened error".

if (socket.readyState != socket.OPEN) {
    console.error('Client state is ' + socket.readyState);
    //or any message you want
} else {
    socket.send(JSON.stringify(object)); //send data to client
}

Answer 3

I was having this same issue. Turned out I was attempting to send events to sockets that were in the "closing" state. Checking that each socket was specifically open before broadcasting a message fixed it for me:

    function sendAll(data){
        for(var i = 0; i < clients.length; i++){
            if(this.clients[i].readyState != this.clients[0].OPEN){
                console.error('Client state is ' + this.clients[i].readyState);
            }
            else{
                this.clients[i].send(data);
            }
        }
    }