JQuery ajax call to ASP.NET handler always returns error

Question

I'm writing a client for an asp.net handler that processes and sends notifications to the polling clients. I make ajax calls with jquery every 10 seconds waiting for the notifications. The problem is every time I send a response back to the client it always calls the error callback. With fiddler I see the json response arriving to the client with status 200 but in firebug the request keeps waiting.

Client:

function poll(){

$.ajax({ 
        url: "http://localhost:53914/NotificationChecker.ashx",      
        data: { userName: "ggyimesi" },
        type: 'POST',
        success: function(data){
            alert("asd");
            $('div#mydiv').text(data.Text);
            },
        complete: poll, 
        error: function(data){alert(data.status);},
        timeout: 15000 });
}

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

Server:

Response response = new Response();
response.Text = this.MessageText;
response.User = Result.AsyncState.ToString();
string json = JsonHelper.JsonSerializer<Response>(response);
Result.Context.Response.ContentType = "application/json";
Result.Context.Response.Write(json);

Try using a relative Url, in case the browser thinks theres some kind of XSS going on here: url: "/NotificationChecker.ashx", — Rory McCrossan
– Rory McCrossan, Commented Oct 5, 2012 at 9:51

Lord Gamez · Accepted Answer · 2012-10-05 13:22:55Z

1

I actually found the problem. The problem was that I started the client html from my local machine not hosted on the web server and that caused the problem. After adding it to the local web server the original code worked as it is.

answered Oct 5, 2012 at 13:22

Lord Gamez

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Comments

mr_lewjam · Accepted Answer · 2012-10-05 10:03:21Z

0

I think your ajax call is missing the following:

    dataType: 'json',
    contentType: "application/json; charset=uft-8",

answered Oct 5, 2012 at 10:03

mr_lewjam

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1 Comment

Lord Gamez Over a year ago

In this case how can I retrieve the posted arguments? Because the only thing that changes is that on the server side I can't retrieve Request["userName"] parameter.

Stefan P. · Accepted Answer · 2012-10-05 10:04:25Z

0

Try this:

$.ajax({ 
        url: "/NotificationChecker.ashx",
        dataType: 'json',
        contentType: "application/json; charset=uft-8",      
        data: { userName: "ggyimesi" },
        type: 'POST',
        success: function(data){
            alert("asd");
            $('div#mydiv').text(data.Text);
            },
        complete: poll, 
        error: function(data){alert(data.status);},
        timeout: 15000 });
}

answered Oct 5, 2012 at 10:04

Stefan P.

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Comments

Kate Gregory · Accepted Answer · 2012-10-11 17:08:20Z

0

I think your problem is that you pass your username like this

data: { userName: "ggyimesi" }

I think you should do it like this

data: '{userName:"' + ggyimesi + '"}'

and you can add more like this

 type: "POST",
 url: "NotificationChecker.ashx",
 contentType: "application/json; charset=utf-8",
 dataType: 'json',

edited Oct 11, 2012 at 17:08

Kate Gregory

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answered Oct 5, 2012 at 10:36

Rajpurohit

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1 Comment

Lord Gamez Over a year ago

this case I can't seem to find any passed parameters on the asp.net side. Request paremeters and inputstream is empty.

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