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