Best client/server UPD and TCP debugging tool?

Question

I'm trying to find a simple TCP/UDP debugging tool. The tool should act like a client or a server, display incoming messages, allow sending messages, etc. Ideally, the tool would have a GUI and be extremely easy to use.

For the life of me I can't find anything adequate. All tools I tried either truncate messages, inject dummy messages in the stream, etc. This is frustrating given how easy such a tool is easy to implement. I can't believe this wheel hasn't been reinvented 100 times, yet 3 hours of Googling got me nowhere...

Any help appreciated. Thanks,

Answer 1

What platform are you using? On linux, the combination of netcat with tcpdump is a veritable Swiss-Army knife for network analysis. Both are free and are included as part of many linux distributions.

On Windows (and also available for linux), you might try Wireshark for analysis.

Answer 2

TCPIP Builder (Windows)