Creates a in-program ONC RPC service transport, to which it
    returns a pointer. The transport is really a buffer within the
    process's address space, so the corresponding client should live
    in the same address space; see the clntraw_create routine. The
    svcraw_create and clntraw_create routines allow simulation and
    acquisition of ONC RPC overheads (such as round-trip times),
    without any kernel interference.