Still got dc after PING/PONG

I’d say go with 3ventic’s suggestion. I don’t know anything about C# but does this work?

                String message = inputStream.readMessage();
                Console.WriteLine(message);
                if (message.StartsWith("PING"))
                {
                    sendIrcMessage("PONG :tmi.twitch.tv");
                }

or

                String message = inputStream.ReadLine();
                Console.WriteLine(message);
                if (message == "PING :tmi.twitch.tv")
                {
                    sendIrcMessage("PONG :tmi.twitch.tv");
                }