protected virtual void OnVerify(PushVerifyEventArgs args)
{
if (PushVerify != null)
{
PushVerify(this, args);
}
}
protected virtual int VerifySubscribeRequest(HttpListenerRequest request, out string responseMessage)
{
var qs = request.QueryString;
PushSubscriberMode mode;
int leaseSeconds;
string msg = null;
Func <string, bool> verifyParam = (paramName) =>
{
if (string.IsNullOrEmpty(qs[paramName]))
{
msg = "Expected " + paramName;
return(false);
}
return(true);
};
if (!(verifyParam("hub.mode") && verifyParam("hub.topic") && verifyParam("hub.challenge")))
{
responseMessage = msg;
return((int)HttpStatusCode.BadRequest);
}
try
{
mode = (PushSubscriberMode)Enum.Parse(typeof(PushSubscriberMode), qs["hub.mode"], true);
}
catch (Exception)
{
// Not a valid mode.
responseMessage = "Unknown mode: " + qs["hub.mode"] ?? "";
return((int)HttpStatusCode.BadRequest);
}
if (!int.TryParse(qs["hub.lease_seconds"], out leaseSeconds))
{
leaseSeconds = 0;
if (mode == PushSubscriberMode.Subscribe)
{
responseMessage = "Expected hub.lease_seconds";
return((int)HttpStatusCode.BadRequest);
}
}
var args = new PushVerifyEventArgs(mode, qs["hub.topic"],
qs["hub.challenge"], leaseSeconds, qs["hub.verify_token"]);
args.Response = args.Challenge;
args.Allow = true;
OnVerify(args);
responseMessage = args.Response;
return(args.Allow ? (int)HttpStatusCode.OK : (int)HttpStatusCode.NotFound);
}
protected virtual int VerifySubscribeRequest(HttpListenerRequest request, out string responseMessage)
{
var qs = request.QueryString;
PushSubscriberMode mode;
int leaseSeconds;
string msg = null;
Func<string, bool> verifyParam = (paramName) =>
{
if (string.IsNullOrEmpty(qs[paramName]))
{
msg = "Expected " + paramName;
return false;
}
return true;
};
if (!(verifyParam("hub.mode") && verifyParam("hub.topic") && verifyParam("hub.challenge")))
{
responseMessage = msg;
return (int)HttpStatusCode.BadRequest;
}
try
{
mode = (PushSubscriberMode)Enum.Parse(typeof(PushSubscriberMode), qs["hub.mode"], true);
}
catch (Exception)
{
// Not a valid mode.
responseMessage = "Unknown mode: " + qs["hub.mode"] ?? "";
return (int)HttpStatusCode.BadRequest;
}
if (!int.TryParse(qs["hub.lease_seconds"], out leaseSeconds))
{
leaseSeconds = 0;
if (mode == PushSubscriberMode.Subscribe)
{
responseMessage = "Expected hub.lease_seconds";
return (int)HttpStatusCode.BadRequest;
}
}
var args = new PushVerifyEventArgs(mode, qs["hub.topic"],
qs["hub.challenge"], leaseSeconds, qs["hub.verify_token"]);
args.Response = args.Challenge;
args.Allow = true;
OnVerify(args);
responseMessage = args.Response;
return args.Allow ? (int)HttpStatusCode.OK : (int)HttpStatusCode.NotFound;
}
protected virtual void OnVerify(PushVerifyEventArgs args)
{
if (PushVerify != null)
{
PushVerify(this, args);
}
}
static void callback_PushVerify(object sender, PushVerifyEventArgs args)
{
Console.WriteLine("{0} - Received verify message from hub.", DateTime.Now);
// Verify all requests.
args.Allow = true;
}