Notes

The services socket functions are supported by CA IDMS's internal services resolver. For more information, see the CA IDMS System Operations Guide.
The SERVENT structure area is allocated by the system and associated with a CA IDMS task. It is freed at task termination. It is reused by subsequent calls to a services function: GETSERVBYNAME or GETSERVBYPORT.
More Information:

For more information about the SERVENT structure, see Socket Structure Descriptions.
When the CASE sub-clause in the SERVICES FILE clause is defined as SENSITIVE, then the service-name and the protocol-name must be specified exactly as they are defined in the services file.
If it is defined as INSENSITIVE, the internal services resolver always tries to first retrieve the service-name and protocol-name as they are coded in the socket function call. If they are not found, the first entry where the uppercase versions of the service names and protocol names match are returned. In all cases, all the strings returned in the SERVENT structure are always coded as they appear in the services file.