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BlackBerry Push Development

New Member
Posts: 1
Registered: ‎10-10-2011
My Device: Bold 9700
My Carrier: MTN

.net or C# Push Initiator code example

I am trying to push messages to my device from a .net appliacation. the app can be windows app or a web app.

I have got as far as below by searching the web but when I run it, it gives me the error, "The remote server returned an error: (401) Unauthorized."


I have set up the sample Push Initiator by following the documentation I got off the blackberry web site and I do receive pushes on my device from it so I know my credentials are correct and are still valid but I would like to have a C# app doing the pushes because it will be easier for me to maintain and monitor. Does anyone have an example that is currently working or tell me why I am getting the error?




Below is the code I have a the moment


private void Pushtest()


            HttpWebResponse HttpWRes = null;

            HttpWebRequest HttpWReq = null;


            string pin = "ABCDEF12"; // or actual pin of device

            string applicationID = "xxx-xxxxxxxxxxxxxxxxxx";

            string BOUNDARY = "mPsbVQo0a68eIL3OAxnm";

            string msg = "testing"; // the message to send


            string userName = "xxx-xxxxxxxxxxxxxxxxxx";

            string userPW = "xxxxxxxx";


            string url = "https://pushapi.eval.blackberry.com/mss/PD_pushRequest";


            HttpWReq = (HttpWebRequest)WebRequest.Create(url);

            HttpWReq.Method = ("POST");

            HttpWReq.Accept = "text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2";


            HttpWReq.Credentials = new NetworkCredential(userName, userPW);


            HttpWReq.PreAuthenticate = true;

            HttpWReq.ContentType = "multipart/related; boundary=" + BOUNDARY + "; type=application/xml";


            StringBuilder dataToSend = new StringBuilder();


            dataToSend.AppendLine("--" + BOUNDARY);

            dataToSend.AppendLine("Content-Type: application/xml; charset=UTF-8");



            dataToSend.AppendLine("<?xml version=\"1.0\"?>");

            dataToSend.AppendLine("<!DOCTYPE pap PUBLIC \"-//WAPFORUM//DTD PAP 2.1//EN\" \"http://www.openmobilealliance.org/tech/DTD/pap_2.1.dtd\">");


            string myPushId = DateTime.Now.ToFileTime().ToString();

            dataToSend.AppendLine("<push-message push-id=\"" + myPushId + "\" source-reference=\"" + applicationID + "\">");

            dataToSend.AppendLine("<address address-value=\"" + pin + "\"/>");

            dataToSend.AppendLine("<quality-of-service delivery-method=\"unconfirmed\"/>");



            dataToSend.AppendLine("--" + BOUNDARY);


            dataToSend.AppendLine("Content-Type: text/plain");

            dataToSend.AppendLine("Push-Message-ID: " + myPushId);





            dataToSend.AppendLine("--" + BOUNDARY + "--");



            Stream requestStream = null;

            string pushResult = "";



                requestStream = HttpWReq.GetRequestStream();


            catch (Exception ex)


                pushResult = "Push failed! " + ex.ToString();


            byte[] outStr = new ASCIIEncoding().GetBytes(dataToSend.ToString());

            requestStream.Write(outStr, 0, outStr.Length);





                HttpWRes = (HttpWebResponse)HttpWReq.GetResponse();


            catch (Exception ex)


                //push failed



            if (HttpWRes != null)





New Developer
Posts: 7
Registered: ‎04-06-2012
My Device: Bold 9900

Re: .net or C# Push Initiator code example

I have found that using NetworkCredentials simply doesn't work - I'm not sure why...

In any case you can use the following code to manually setup the authorization header:


string userName = "RIM app id";
string password = "RIM password";
string rawCredentials = string.Format("{0}:{1}", userName, password);
		"Basic {0}",


That works for me (request in this case is an HttpWebRequest object)...



Demented Devil

If it ain't broke try harder...

My stuff: Bold 9900/PlayBook 64Gb/BB10 Dev Alpha B DTAC/Thailand

WinServer 2008R2 / Exchange 2010

Developing for BB10 with Cascades, QML and C++