Question

I am trying for making connection on web socket.But I’m unable to make it wait until server Started . Whenever I start my client without Server running I got caught in error event..What should I have to do to make my Client wait until Server get Start ?

My Client in Node.js

var WebSocket = require('ws');
var ws = new WebSocket('ws://localhost:90');


ws.on('open', function() {
     console.log('Client 1 Started');
});

ws.on('message', function(message) {
     console.log(message);
});

ws.on('error', function(err) {
     console.log('Client Error :- ',err.code);
});

ws.on('close', function() {
 console.log('Connection terminated..Closing Client 1');
});

Answer 1

Its Work For me…Now Client can wait still Server get Start…

var WebSocket = require('ws');
var ws = new WebSocket('ws://localhost:90');

 ws.on('error', function(err) {
    console.log('Waiting For Connection..');
    setTimeout( poll, 1000);
});


var poll = function( ) {

ws = new WebSocket('ws://localhost:90');

ws.on('open', function() {
    console.log('Client 1 Started');
});

ws.on('message', function(message) {
    console.log(message);
});

ws.on('error', function(err) {
    // Check error code? Maybe put it in close event?
    setTimeout( poll, 1000);
});

ws.on('close', function() {
    console.log('Connection terminated..Closing Client 1');
});
}