Question

I am currently working on an implementation of an application for Windows Phone 7 that should retrieve the SHOUTcast stream (inspired by this question). The stream location is represented by an IP address and a port.

Here is an example of a SHOUTcast stream URL:
http://78.159.104.183:80

I am trying to make a HttpWebRequest to get the data from the stream:

HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://78.159.104.183:80");

Once the request is initialized, I am trying to get a response via an asynchronous callback:

request.BeginGetResponse(new AsyncCallback(GetShoutAsync), request);

GetShoutAsync looks like this:

void GetShoutAsync(IAsyncResult res)
{
     HttpWebRequest request = (HttpWebRequest)res.AsyncState;
     HttpWebResponse response = (HttpWebResponse)request.EndGetResponse(res);
}

When I build the project and run it, it gets to the point where the request is initialized, but the callback is never called.

I noticed an interesting thing – SHOUTcast implements a technique by which when the user tries to navigate to the stream URL, the server detects the user agent and if it is a web browser, it will simply show a HTML page instead of passing application/octet-stream content.

You can still receive the stream directly if you use a slash and semicolon at the end of the stream URL: http://78.159.104.183:80/;

However, in my application, I cannot get the response – the callback seems to never be reached. I tried faking the user agent by passing it directly to the HttpWebRequest:

request.UserAgent = "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.3) Gecko/20100401 Mozilla/5.0 (X11; U; Linux i686; it-IT; rv:1.9.0.2) Gecko/2008092313 Ubuntu/9.25 (jaunty) Firefox/3.8";

This works for the simple stream URL (without the semicolon at the end) to get the HTML contents, but I cannot get the binary stream.

Anyone ever encountered something like this or knows what’s causing it?

Answer 1

I have no idea if this would work for you but I had the same problem,

and explicitly setting

request.AllowReadStreamBuffering = false;
request.Method = “GET”;

seemed to whatever reason get my callback to fire…

I’m not sure why.