javascript - Websocket timeout -

i need handle websocket timeout when socket trying connect server available busy.

more in deep have web application can connect several single-thread remote socket server in charge post-process data passed input.

the goal collect data web gui , submit them first socket available , listening.

in case server socket daemon processing data, cannot serve user request has instead addressed second socket of list.

basically , practical example, have such socket ready accept call coming web brworser:

ws://10.20.30.40:8080/ ws://10.20.30.40:8081/ ws://10.20.30.40:8082/ ws://10.20.30.40:8083/ ws://192.192.192.192:9001/

when first socket receive call , perform handshake, starts process data (and process may took minutes).

when client same request on different set of data, that request served 2nd socket available , on.

so question is... how can contact socket (the first of list), wait 250 milliseconds , (in case of timeout) skip next one?

i've started following approach:

$.interval = function(func, wait, times) {     var interv = function(w, t) {         return function() {             if (typeof t === "undefined" || t-- > 0) {                 settimeout(interv, w);                 try {                     func.call(null);                 } catch(e) {                     t = 0;                     throw e.tostring();                 }             } else {                 alert('stop');             }         };     } (wait, times);     settimeout(interv, wait); }  handler = new websocket(url); loop = 1; $.interval(function(){     rs = handler.readystate;     console.log("(" + loop++ + ") readystate: " + rs); }, 25, 10); //loop 10 times every 25 milliseconds 

but how can stop in case socket.readystate became 1 (open) or limit reached?