Custom requests to resources using C#
This sample demonstrates how to get data from a protected resource by using a HttpWebRequest object and the MobileFirst WLAuthorizationManager API for Windows 8 Universal app.
After a response was first received, the WLAuthorizationManager class determines whether this response is a MobileFirst protocol response. If so, the user gets the scope, obtains the authorization header for this scope, and requests the protected resource one more time.
class WebReqInfo {
public HttpWebRequest request = null;
}
private async void externalOAuthFlow() {
// Create a HttpWebrequest object to the desired URL.
HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://localhost:3000/v1/apps/1234/test");
request.BeginGetResponse(new AsyncCallback(responseCallback), new WebReqInfo(){ request=request });
}
private void responseCallback(IAsyncResult asyncResult) {
WebReqInfo wReqInfo = null;
HttpWebResponse response = null;
try {
/* Send the request to the server and wait for it to complete */
wReqInfo = (WebReqInfo)asyncResult.AsyncState;
// Get response
response = wReqInfo.request.EndGetResponse(asyncResult) as HttpWebResponse;
WLResponse newResponse = new WLResponse(response);
int sCode = newResponse.getStatus().GetHashCode();
// Check that the response conforms to the MFP protocol
if (WLAuthorizationManager.getInstance().isAuthorizationRequired(response)) {
// Get required scope from response
String scope = WLAuthorizationManager.getInstance().getAuthorizationScope(response);
//Obtain authorization header for the scope
WLAuthorizationManager.getInstance().obtainAuthorizationHeader(scope, new MyResponseListener());
}
else {
// At this point a response from the resource was received, process it:
processResponse(response)
}
} catch (Exception e) {
Debug.WriteLine("Exception during request");
}
}
public class MyResponseListener : WLResponseListener {
HttpWebRequest request;
public MyResponseListener(HttpWebRequest request) {
this.request = request;
}
class WebReqInfo {
public HttpWebRequest request = null;
}
// This method will be invoked if an authorization header was obtained successfully:
public void onSuccess(WLResponse response) {
// Add the obtained authorization header to the original request
WLAuthorizationManager.getInstance().addCachedAuthorizationHeader(request);
try {
// Resend the request
request.BeginGetResponse(new AsyncCallback(resendRequestCallback), new WebReqInfo(){request=request });
} catch (Exception e) {
Debug.WriteLine("Unable to obtain token");
}
}
// This method will be invoked if an authorization header was not obtained:
public void onFailure(WLFailResponse response) {
Debug.WriteLine("Unable to obtain Token");
}
private void resendRequestCallback(IAsyncResult asyncResult) {
WebReqInfo wReqInfo = null;
HttpWebResponse response = null;
try {
/* Send the request to the server and wait for it to complete */
wReqInfo = (WebReqInfo)asyncResult.AsyncState;
response = wReqInfo.request.EndGetResponse(asyncResult) as HttpWebResponse;
processResponse(response);
} catch (Exception e) {
Debug.WriteLine("Exception during request");
}
}
}