Make a synchronous rpc call
sunrpc.clnt.call_sync
flags
flags
servername
the server machine name
dead
whether this client is abandoned
prog
the RPC program number
prot
the IP protocol number
procname
the procedure name in this RPC call
xid
current transmission id
vers
the RPC program version number
progname
the RPC program name
proc
the procedure number in this RPC call
port
the port number