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Determines if a function is supported by the current TCP/IP vendor stack.
&ZTCPSUPP function
&ZTCPSUPP returns NO if the function is unknown or not supported, or if the TCPIP START command has never been issued. It returns YES if the function is supported.
Operands:
Returns YES if &SOCKET PING is supported.
Returns YES if &SOCKET TRACEROUTE is supported.
Returns YES if &SOCKET GETHOSTBYADDR is supported.
Returns YES if &SOCKET GETHOSTBYNAME is supported.
Returns YES if the SOLVE Domain Name Resolver (DNR) is supported.
Examples: &ZTCPSUPP
&CANPING = &ZTCPSUPP PING &WRITE DATA=PING? &CANPING!
Note: For more information, see the DNR and SHOW DNR command descriptions in the Online Help.
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