C＃无法连接到我的异步TCP服务器

Question

I have an async TCP server I built that acts as an intermedium between a remote client application and the SQL server. Anyway, when I go to test a connection from a remote machine - it won't connect. I am using Putty to test the connection to the TCP server and Putty immediately closes after I push connect. I set up Wireshark on both machines and I see some sort of communication come through on the port from the source IP but I don't know how to read it. Both machines are Windows and I turned off the Windows Firewall. Can anyone help me diagnose my issue? Thanks.

Here's my Async Server code: PasteBin

Here's my Wireshark Capture (Server Side): PasteBin

Answer 1

Did you setup putty to use raw tcp connections as explained in the documentation of putty?

By default, putty creates secure shell (ssh) connections.