Socket call error return codes

This information contains error return codes for socket calls. The error codes apply to all of the following socket APIs:

TCP/IP C socket API
X/Open Transport Interface
Macro API for IPv4 or IPv6 that is written in z/OS® assembler language
Call instruction API for IPv4 or IPv6 socket applications
z/OS Communications Server socket API for REXX
Pascal language for IPv4 socket API

It also contains sockets extended return codes that apply only to the macro, call instruction, and REXX socket APIs.

If the return code is not listed in this information, it is a return code that is received from z/OS UNIX. See z/OS UNIX System Services Messages and Codes for the z/OS UNIX ERRNOs.

See User abend U4093 for a description of user abend U4093.