It's your browser limiting the amount of concurrent connections.
On Mon, May 7, 2012 at 1:06 PM, JoeZ99 <[email protected]> wrote:
> in ajax, node can only take up to 6 requests if no response is set during
> that time.
>
> see the code:
>
> on the server:
>
> var http = require('http');
> http.createServer(onResponse).listen(9999);
>
> function onResponse(req, res){
> console.log('req received');
> setTimeout(function(){
> res.writeHead(200);
> res.end("console.log('response sent')");
> },6000);
> }
>
>
> on the client (using jquery and jsonp):
>
> <script type="text/javascript" src="jquery.min.js"></script>
> <script type="text/javascript" src="jquery.jsonp-2.2.0.min.js"></script>
> <body>
> <button id="boton">click me</button>
> <script type="text/javascript">
> $('#boton').click(function(){
> $.jsonp({
> url: 'http://localhost:9999',
> callback: function(){},
> data: {key1:'key1v',key2:'key2v'},
> timeout: 50000,
> success: function(){
> console.log('success');
> },
> beforeSend: function(){console.log('fire!');}
> });
> });
> </script>
> </body>
>
>
> As you can see:
>
> - each time the button is clicked, a jsonp request is made to the
> server. a log line of "fire!" is printed on browser console just before
> sending the request.
> - each time the server receives a request, it takes 6 seconds to send
> back the response. a log line of "req received" is printed at the server's
> console upon req reception. a log line of "response sent" is printed at the
> server's console upon response sending
> - a log line of 'success' is printed at the browser's console upon
> response reception.
>
>
> if I make, say 10 6 clicks in less than 6 seconds I will only see 6 "req
> received" log lines. I will see 10 "fire!" loglines in the browser console
> and of course no "response sent" or "success" logline whatsoever (because 6
> seconds hasn't passed yet).
>
> After the 6 seconds, the pending requests (4) comes in, and I see the 4
> remaining "req received" loglines .
>
>
> I guess its standard behavior, I just didn't know, I don't know if this
> can be worked around somehow, or I'm just missing something.
>
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--
--
Marak Squires
Co-founder and Chief Evangelist
Nodejitsu, Inc.
[email protected]
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