z/OS Communications Server: IP Sockets Application Programming Interface Guide and Reference
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Designing multicast programs: Protocol-independent multicast options

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

The following socket options enable your application to support IPv4 and IPv6 multicast:
  • MCAST_BLOCK_SOURCE
  • MCAST_JOIN_GROUP
  • MCAST_JOIN_SOURCE_GROUP
  • MCAST_LEAVE_GROUP
  • MCAST_ LEAVE_SOURCE_GROUP
  • MCAST_UNBLOCK_SOURCE

Use the Macro, Callable, and REXX Sockets API SETSOCKOPT call to set these options.

Parent topic: Designing multicast programs

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