VMS Help TCPIP Services, Programming Interfaces, RPC Server Routines, svc_getcaller  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    A macro that returns the address of the client that called the
    service procedure.
    Format
      #include  <rpc/rpc.h>
      struct sockaddr_in  *svc_getcaller(SVCXPRT *xprt);

  Additional Information (explode) :

• Arguments
• Description
• Return Values