class type auth_details =object..end
method server_addr : Unix.sockaddr option
method client_addr : Unix.sockaddr option
method program : Rtypes.uint4
method version : Rtypes.uint4
method procedure : Rtypes.uint4
method xid : Rtypes.uint4
method credential : string * string
method verifier : string * string
method frame_len : int
method message : Rpc_packer.packed_value
