private void Verify(HttpListenerRequest Request, Action <EngineIOException> Callback)
{
EngineIOException Return = null;
bool AllowHttpRequest = false;
try
{
if ((Return = Verify(Request.QueryString, Request.Headers, EngineIOTransportType.polling)) == null)
{
string SID = EngineIOHttpManager.GetSID(Request.QueryString);
bool Contains = _Clients.ContainsKey(SID);
if (string.IsNullOrEmpty(SID) || Contains)
{
if (Contains && !(_Clients[SID].Transport is EngineIOPolling))
{
Return = Exceptions.BAD_REQUEST;
}
else if (EngineIOHttpManager.ParseMethod(Request.HttpMethod) == EngineIOHttpMethod.GET)
{
if (Option.AllowHttpRequest != null)
{
AllowHttpRequest = true;
Option.AllowHttpRequest(Request, Callback);
}
}
else if (string.IsNullOrEmpty(SID))
{
Return = Exceptions.BAD_HANDSHAKE_METHOD;
}
}
else
{
Return = Exceptions.UNKNOWN_SID;
}
}
}
catch (Exception Exception)
{
EngineIOLogger.Error(this, Return = new EngineIOException("Unknown exception", Exception));
}
finally
{
if (!AllowHttpRequest)
{
Callback(Return);
}
}
}