client := rpc.NewClient(conn) var reply int var seq netrpc.RequestSeq err := client.Call("Arith.Multiply", Args{7, 8}, &reply, &seq) if err != nil { // handle error }
type Args struct { A, B int Seq netrpc.RequestSeq } type Arith int func (t *Arith) Multiply(args *Args, reply *int) error { *reply = args.A * args.B return nil }In this example, the server defines a struct "Args" with two integer fields "A" and "B", and a field "Seq" of type RequestSeq. It also defines a struct "Arith" with a method "Multiply" that takes a pointer to "Args" and "reply" variable as arguments. The method simply multiplies "A" and "B" fields of "Args" together and stores the result in "reply". Package: net/rpc In conclusion, the net/rpc package provides support for remote procedure calls in Go. The RequestSeq type represents a sequential number of an RPC request, which can be used to identify the order in which requests were made.