TCP Null

TCP server for debugging and testing. Discard incoming data or echo it back to client raw or as an HTTP response.



  • Specify what interface and port to listen on
  • Choose one of three actions for an incoming request: discard incoming data, echo data back to client exactly as it was received, or echo data back to client in the form of an HTTP 200 OK response


Make sure you have Java 1.7 or greater installed. Double click the .jar file or run on the command line with:

java -jar TcpNull-1.0.jar

Source Code