System Variables

The following system variables are available within the TCP/IP &SOCKET verb set.

&ZTCP: Indicates the status of the socket interface
&ZTCPHSTA: Contains the value of the local host's IP address
&ZTCPHSTF: Contains the value of the local host's full name
&ZTCPHSTN: Contains the value of the local host's short name
&ZSOCID: Contains the socket ID of the last referenced socket
&ZSOCHNM: Contains the host name of the host referenced by some requests, such as &SOCKET GETHOSTBYADDR
&ZSOCFHNM: Contains the full host name of the host referenced by some requests, such as &SOCKET GETHOSTBYADDR
&ZSOCHADR: Contains the IP address of the host referenced by some requests, such as &SOCKET GETHOSTBYNAME
&ZSOCCID: Contains the socket ID used by the interface; for example, for IBM TCP/IP the internal socket number (a small number). Is used to identify an NCL socket or display produced by TCP/IP; for example, the NETSTAT command.
&ZSOCERRN: Contains the last ERRNO value returned from an &SOCKET request
&ZSOCPRT: Contains the port number of the last referenced socket
&ZSOCTYPE: Indicates the socket type of the last referenced socket
&ZSOCVERR: Returns vendor error information-format is specific to the TCP/IP interface in use

Note: For details of these verbs, see System Variables.