This is a set of two scripts which can be used to measure the speed of a network connection.

server (

The server script is an RFC 864 server (Character generator).

It has some limitations, though: It can only handle one connection and it only implements the TCP part, not the UDP part.

A complete RFC 864 server is actually built into Windows. You just need to install the Simple TCP/IP services.

client (

The client connects to an RFC 864 server and prints how much data it receives (per second).



./ [port]


./ host[:port]

By default the server runs on port 19.


Server: (License: GPL 2)

Client: (License: GPL 2)