/sys$common/syshlp/helplib.hlb TCPIP Services, Programming Interfaces, Sockets API, getprotoent(), Description  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    This function returns a pointer to a protoent structure
    containing the data from the protocols database:
    struct  protoent {
            char   *p_name;       /* official name of protocol */
            char   **p_aliases;   /* alias list */
            long   p_proto;       /* protocol number */
    };
    The members of this structure are:
    p_name             The official name of the protocol.
    p_aliases          A zero-terminated list of alternate names for
                       the protocol.
    p_proto            The protocol number.
    The getprotoent() function keeps a pointer in the database,
    allowing successive calls to be used to search the entire file.
    All information is contained in a static area, so it must be
    copied to be saved.
    Related Functions
    See also getprotobyname() and getprotobynumber().