Reconnection of Client when server reboots in WebSocket

php websocket phpwebsocket
siddhusingh picture siddhusingh · Sep 23, 2010 · Viewed 82.5k times · Source

I am using web socket using PHP5 and the Chrome browser as client. I have taken the code from the site http://code.google.com/p/phpwebsocket/.

I run the server, and the client is also connected. I can chat as well. Now when I restart the server (by killing it and starting it again), the client gets the disconnected information, but automatically doesn't reconnect with server when I send the message.

How to achieve this? Like when I get the dis-connected information, should I check it and send it to JavaScript to refresh the page or reconnect?

Answer

Andrew picture Andrew · Nov 22, 2011

When the server reboots, the Web Socket connection is closed, so the JavaScript onclose event is triggered. Here's an example that tries to reconnect every five seconds.

function start(websocketServerLocation){
    ws = new WebSocket(websocketServerLocation);
    ws.onmessage = function(evt) { alert('message received'); };
    ws.onclose = function(){
        // Try to reconnect in 5 seconds
        setTimeout(function(){start(websocketServerLocation)}, 5000);
    };
}

Related questions

Using WebSocket on Apache server

With all the buzz around WebSockets, it's pretty hard to find a good walkthrough on how to use them with an Apache server on Google. We're developing a plugin, in PHP (symfony2), which will run from time to time kind …

Read More
Can't establish a connection to the server at ws://localhost:8000/socket/server/startDaemon.php. var socket = new WebSocket(host);

I am using javascript to connect websocket: <script> var socket; var host = "ws://localhost:8000/socket/server/startDaemon.php"; var socket = new WebSocket(host); </script> I got the error: Can't establish a connection to the server at …

Read More
How to call a WebSocket programmatically (using PHP)?

I have a situation where I need to update one browser window based on input from the other. Right now I'm using WebSockets and it's working great. Now I want to send data to the WebSocket using PHP instead of …

Read More