// Notify() sends a POST request to the Subscription's callback URL.
// DispatchAsync could be used to keep this method from blocking if the server has many subscriptions
public void Notify()
{
try
{
HttpClientRequest req = new HttpClientRequest();
req.RequestType = RequestType.Post;
// First, resolve the hostname using the ResolveHost method
var parsedUrl = new UrlParser(SubscriberCallbackUrl);
string resolvedHostname = ResolveHost(parsedUrl.Hostname);
// Swap in the resolved hostname when setting the target URL of the notification
string resolvedUrl = parsedUrl.ToString().Replace(parsedUrl.Hostname, resolvedHostname);
req.Url = new UrlParser(resolvedUrl);
HttpHeaders headers = new HttpHeaders();
headers.SetHeaderValue("Notification-Type", NotificationType);
headers.SetHeaderValue("Link", "<" + ResourceUrl + ">, rel=\"Resource\"");
req.Header = headers;
req.FinalizeHeader();
HttpClientResponse res = notifier.Dispatch(req);
if (res.Code != 200)
{
CrestronConsole.PrintLine("Notification to " + resolvedUrl + " not acknowledged");
}
// Must call Dispose on the HttpClientResponse object to end the http session
res.Dispose();
}
catch (Exception e)
{
CrestronConsole.PrintLine(e.ToString());
}
}
public static void InjectQueryString(IOwinContext context)
{
if (context.Environment.ContainsKey("owin.RequestQueryString"))
{
var existingQs = context.Environment["owin.RequestQueryString"];
var parser = new UrlParser(existingQs.ToString());
parser[Constants.AuthorizeRequest.AcrValues] = newAcrValues;
context.Environment.Remove("owin.RequestQueryString");
context.Environment["owin.RequestQueryString"] = parser.ToString();
}
}