This information describes the TCP/IP Socket Interface for CICS® (referred to as CICS TCP/IP for short). It contains an introduction, a guide to initialization, and a guide and reference to writing application programs. Use this information to set up CICS TCP/IP, write application programs, and diagnose problems. The information supports both IPv6 and IPv4. Unless explicitly noted, information describes IPv4 networking protocol. IPv6 support is qualified within the text.
The information assumes that the reader is familiar with the MVS™ operating system, and the C, COBOL, PL/I, or Assembler programming languages. Because the CICS Transaction Server (CICS TS) is a prerequisite for CICS TCP/IP, the reader should also be familiar with CICS TS.