private void Verify(WebSocketContext Context, Action <EngineIOException> Callback)
{
EngineIOException Return = null;
bool AllowWebSocket = false;
try
{
if ((Return = Verify(Context.QueryString, Context.Headers, EngineIOTransportType.websocket)) == null)
{
string SID = EngineIOHttpManager.GetSID(Context.QueryString);
bool Contains = _Clients.ContainsKey(SID);
if (!string.IsNullOrEmpty(SID))
{
if (Contains && _Clients.TryGetValue(SID, out EngineIOSocket Socket))
{
if (Socket.Transport is EngineIOPolling && Option.AllowUpgrade && Option.WebSocket && !(Socket.Upgrading || Socket.Upgraded))
{
if (!(Socket.Upgrading || Socket.Upgraded))
{
Socket.UpgradeTransport(new EngineIOWebSocket(Context));
AllowWebSocket = true;
}
else
{
Return = Exceptions.BAD_REQUEST;
}
}
else
{
Return = Exceptions.BAD_REQUEST;
}
}
else
{
Return = Exceptions.UNKNOWN_SID;
}
}
else
{
if (Option.AllowWebSocket != null)
{
AllowWebSocket = true;
Option.AllowWebSocket(Context, Callback);
}
}
}
}
catch (Exception Exception)
{
EngineIOLogger.Error(this, Return = new EngineIOException("Unknown exception", Exception));
}
finally
{
if (!AllowWebSocket)
{
Callback(Return);
}
}
}