May 26, 2018

W. Richard Stevens’ sock program plus IPv6 and SCTP

In TCP/IP Illustrated Vol. 1, Richard Stevens used a program called “sock” to demonstrate the many properties of TCP/IP. This is a standalone version, adapted and reworked by Christian Kreibich.

The program can be used to generate TCP or UDP packets for testing various network features. It runs as either client or server.

This FreeBSD port is built on top of the original 0.3.2 tarball from 2010, above, downloaded from the webpage.

Version 0.4.2 of sock supports IPv6, SCTP and those socket options

  • IPv6 o hop limit o multicast hop limit o disable/enable header flow label o header traffic class o don’t fragment
  • IPv4 o don’t fragment

WWW http//