z/OS Communications Server: IP Sockets Application Programming Interface Guide and Reference
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Parameter values returned to the application

z/OS Communications Server: IP Sockets Application Programming Interface Guide and Reference
SC27-3660-00

ERRNO
A fullword binary field. If the value of RETCODE is negative, the field contains an error number. See Socket call error return codes for information about ERRNO return codes.
RETCODE
A fullword binary field that returns one of the following values:
Value
Description
≥ 0
Contains the new socket descriptor.
-1
Check ERRNO for an error code.
Parent topic: TAKESOCKET

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