What is the effect using jquery ajax with auto request? - ajax

Question

I have auto request using jquery ajax, I am using this function for detection new chat message & notification case. Sometimes I am thinking again what is the effect if client auto request without finish,
I am worried my server is down because i think this is like DDOS HTTP Throttling.
This is my code
$(function(){
initChat();
});
/*
* initialize chat system
*/
function initChat() {
setTimeout("notifChat()" ,2000);
}
function notifChat() {
$.ajax({
url: '/url',
type:"GET",
data: {id:$("#id").val()},
success:function (data,msg) {
//to do success
}
});
setTimeout("notifChat()" ,2000);
}
My question is
Is possible to down server or make server hung up ?
If it is not better idea any somethink suggestion ?

Answer 1

Note: This is not production ready code, I have not tested it.
A couple weekness of this code:
It does not handle the two http connection limit
strengths:
it can tell if the server return an error (as in server error 404,403,402....)
var failed_requests = 0;
var max = 15;
$(function(){
initChat();
});
/*
* initialize chat system
*/
function initChat()
{
setTimeout(
function()
{
notifChat();
}, 2000)
}
function notifChat() {
$.ajax({
url: '/url',
type:"GET",
data: {id:$("#id").val()},
success:function (data,msg)
{
//to do success
},
complete: function()
{
// either call the function again, or do whatever else you want.
},
error: function(XMLHttpRequest, textStatus, errorThrown)
{
failed_requests = failed_requests + 1;
if(failed_requests < max)
{
setTimeout(
function()
{
notifChat();
}, 2000)
}
else
{
alert('We messed up');
}
}
});
}