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