rpc2
rpc2 is a fork of net/rpc package in the standard library.
The main goal is to add bi-directional support to calls.
That means server can call the methods of client.
This is not possible with net/rpc package.
In order to do this it adds a *Client argument to method signatures.
Install
go get github.com/cenkalti/rpc2
Example server
package main
import (
"fmt"
"net"
"github.com/cenkalti/rpc2"
)
type Args struct{ A, B int }
type Reply int
func main() {
srv := rpc2.NewServer()
srv.Handle("add", func(client *rpc2.Client, args *Args, reply *Reply) error {
// Reversed call (server to client)
var rep Reply
client.Call("mult", Args{2, 3}, &rep)
fmt.Println("mult result:", rep)
*reply = Reply(args.A + args.B)
return nil
})
lis, _ := net.Listen("tcp", "127.0.0.1:5000")
srv.Accept(lis)
}Example Client
package main
import (
"fmt"
"net"
"github.com/cenkalti/rpc2"
)
type Args struct{ A, B int }
type Reply int
func main() {
conn, _ := net.Dial("tcp", "127.0.0.1:5000")
clt := rpc2.NewClient(conn)
clt.Handle("mult", func(client *rpc2.Client, args *Args, reply *Reply) error {
*reply = Reply(args.A * args.B)
return nil
})
go clt.Run()
var rep Reply
clt.Call("add", Args{1, 2}, &rep)
fmt.Println("add result:", rep)
}