class type auth_details =object..end
method server_addr : Unix.sockaddr optionmethod client_addr : Unix.sockaddr optionmethod program : Rtypes.uint4method version : Rtypes.uint4method procedure : Rtypes.uint4method xid : Rtypes.uint4method credential : string * stringmethod verifier : string * stringmethod frame_len : intmethod message : Rpc_packer.packed_valuemethod transport_user : string option