getrpcport(3)                                             getrpcport(3)

  getrpcport()

  NAME

    getrpcport() - get RPC port number

  SYNOPSIS

    int getrpcport(char *host, int prognum, int versnum, int proto)

  DESCRIPTION

    getrpcport(3) returns the port number for version versnum of the RPC
    program prognum running on host and using protocol proto. It returns 0 if
    it cannot contact the portmapper, or if prognum is not registered. If
    prognum is registered but not with version versnum, it will still return a
    port number (for some version of the program) indicating that the program
    is indeed registered. The version mismatch will be detected upon the first
    call to the service.

  USAGE NOTES

    The getrpcport function is not thread safe.

    The getrpcport function is not async-signal safe.