Asynchronous WebRequest with POST-parameters in .NET Compact Framework

Question

Hey all.

I'm trying to do an asynchronous HTTP(S) POST on .NET Compact Framework and I can't seem to get it working.

Here's what I'm doing:

private void sendRequest(string url, string method, string postdata) {
    WebRequest rqst = HttpWebRequest.Create(url);
    CredentialCache creds = new CredentialCache();
    creds.Add(new Uri(url), "Basic", new NetworkCredential(this.Uname, this.Pwd));
    rqst.Credentials = creds;
    rqst.Method = method;
    if (!String.IsNullOrEmpty(postdata)) {
        rqst.ContentType = "application/xml";
        byte[] byteData = UTF8Encoding.UTF8.GetBytes(postdata);
        rqst.ContentLength = byteData.Length;
        using (Stream postStream = rqst.GetRequestStream()) {
            postStream.Write(byteData, 0, byteData.Length);
            postStream.Close();
        }
    }
    ((HttpWebRequest)rqst).KeepAlive = false;
    rqst.BeginGetResponse(DataLoadedCB, rqst);
}

private void DataLoadedCB(IAsyncResult result) {
    WebRequest rqst = ((WebRequest)(((BCRqst)result.AsyncState).rqst));
    WebResponse rsps = rqst.EndGetResponse(result);

    /* ETC...*/
}

...but for some reason I get a WebException on the second row of DataLoadedCB:

"This request requires buffering of data for authentication or redirection to be successful."

The exact same code works perfectly, when I do a simple HTTP GET, but when I throw in some POST params, everything fails.

Any ideas?

Answer 1

I am ever so happy! I found the answer to my question!!!

This little line did the trick:

((HttpWebRequest)rqst).AllowWriteStreamBuffering = true;

Answer 2

hi I have the same problem.

I tried setting 'AllowWriteStreamBuffering' true. But this worked only on the Emulator, and not the my device.

Is there any other Http Request property to be set, such as 'HTTP version', etc.

When I set 'AllowWriteStreamBuffering' true, the device throws an error saying 'Not implemented'.

It would be gr8 if you could post your code where you set the Http Request Properties.