Create a TCP Client and Server and Send Messages with Netcat

This post shows how to create a TCP client and server and send messages between them using netcat v1.12 on Windows

Steps

1. Download netcat v1.12 for windows from http://eternallybored.org/misc/netcat/ (or click here to get it)

2. Open a CMD window

3. Create the server by typing this into the CMD window

4. Open another CMD window

5. Create the client by typing this into the CMD window you just opened:

6. Type Hello, World in the client. You should see it in the server.

Good links

• Netcat cheatsheet here

• Establishing a connection and getting some data over HTTP from Jon Craton

• Download netcat v1.12 here

• A Gentle Introduction to netcat by Zheng Hao Tan

• netcat commands by Jon LaBelle

• A cool webserver in one line from Christoph Champ's Personal Wiki

• { echo -ne "HTTP/1.0 200 OK\r\nContent-Length: $(wc -c <some.file)\r\n\r\n"; cat some.file; } | nc -l 8080

Reference

• Cat pic from link