Winsock connection test

How do you test to see if your program is working and able to connect with server? I tried stackoverflow server's ip through port 40 and it fails after a min at connect().

test.exe 64.34.119.12 echo 40

P开发者_高级运维rogram arguments take a syntax: <Server IP> <Echo Word> [<Echo Port>]

Also, can you test without having to connect to internet?

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You should be able to connect to your own echo server on 127.0.0.1:7 if it is running, or get a 'connection refused' (ECONN) if it isn't running. Either would show that your code is OK actually.

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As for testing without having to connect to the internet...

I'd download netcat for windows.
NetCat download

Extract the tool, and run:

nc.exe -v -l -p [port]

If you do that, it opens up a "server" and you can connect to it using your application; just point the IP address to 127.0.0.1!