HttpWebRequest and Set-Cookie header in response not parsed (WP7)

Question

I am trying to get the header \"Set-Cookie\" or access the cookie container, but the Set-Cookie header is not available. The cookie is in the response header, but it\'s not

Answer 1

You are receiving HttpOnly cookies:

Set-Cookie: _CWFServer_session=[This is the session data]; path=/; HttpOnly 

For security reasons, those cookies can't be accessed from code, but you still can use them in your next calls to HttpWebRequest. More on this here : Reading HttpOnly Cookies from Headers of HttpWebResponse in Windows Phone

With WP7.1, I also had problems reading non HttpOnly cookies. I found out that they are not available if the response of the HttpWebRequest comes from the cache. Making the query unique with a random number solved the cache problem :

// The Request
Random random = new Random();  
// UniqueQuery is used to defeat the cache system that destroys the cookie.
_uniqueQuery = "http://my-site.somewhere?someparameters=XXX"
       + ";test="+ random.Next();

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(_uniqueQuery);
request.BeginGetResponse(Response_Completed, request);

Once you get the response, you can fetch the cookie from the response headers:

void Response_Completed(IAsyncResult result)
{
    HttpWebRequest request = (HttpWebRequest)result.AsyncState;
    HttpWebResponse response = (HttpWebResponse)request.EndGetResponse(result);
    String header = response.Headers["Set-Cookie"]; 

I never managed to get the CookieContainer.GetCookies() method to work.