Description from the author:
"rxSock is a REXX function package providing access to the OS/2 TCP/IP socket API as provided by the IBM TCP/IP product, version 1.2.1."
See the home page of Dave Briccetty (see Internet - Web Pages) for two REXX programs using this DLL:
One to get usenet news articles using NNTP and sockets and the other to send mail to an email list with SMTP and sockets.
Note: There's a complete example for using RxSock in the issue 2, volume 2, Feb 1994 of the magazine EDM/2 written by the author of RxSock.