The REXX Socket Support package provides access to the OS/2 TCP/IP socket API's. It is assumed you are familiar with the basic socket APIs and that you can reference the OS/2 specific ones.
For information on socket calls, refer to the IBM Transmission Control Protocol/Internet Protocol Version 2.0 for OS/2: Programmer's Reference.
A widely available book with information on the basic socket APIs is Internetworking with TCP/IP Volume I: Principals, Protocols, and Architecture by Douglas Comer.
The REXX Socket Support package requires the OS/2 TCP/IP product, version 2.0 or higher.
The REXX feature from the OS/2 Setup and Installation window must be installed. To access the REXX feature, choose Selective Install from the OS/2 System Setup folder. Then from the System Configuration window, select OK to display the OS/2 Setup and Installation window. Check the REXX feature and select the Install push button.