Question

I have implemented comet client in jquery as following:

$(document).ready(function () {
    comet();
});

function comet(){
    var cometJSON = {
            'comet': 'id'
        }
    $.ajax({
        type: "POST",
        url: "http://localhost:8080/comet",
        data: JSON.stringify(cometJSON),
        async: true, /* Set async request*/
        cache: false,
        timeout:50000, /* Timeout in ms */

        success: function(data){ 
            console.log('suc');
            eventReceived(data); 

        },
        error: function(jqXHR, textStatus, errorThrown){
            console.log("error: "+textStatus);

        },
        complete: function(jqXHR, textStatus){
            console.log("Send new comet!");
            comet();
        }
    });
};

Everything works fine, but I have always noisy spinner in my browser tab and my status pannel always shows: Waiting for localhost, how can I fix that?

Answer 1

The spinner indicates a connection in progress, which is exactly what is happening – after you receive an answer, in complete section you instantly trigger a new request, hence there is a connection in progress most of the time (pretty much always). To avoid it, you need to do a delay before a new request – setTimeout(comet, 1000) sounds like a good alternative to the last comet();