rpc(远程过程调用),可以像调用本地程序一样调用远端服务,rpc分为http方式和tcp连接方式,使用http的rpc调用如下:
首先是server端:
// rpc_server project main.go
package main import ( "fmt"
"net"
"net/http"
"net/rpc" ) type Watcher int func (watcher *Watcher) GetInfo(arg int, result *int) error { *result = 1 + arg return nil } func main() { watcher := new(Watcher) rpc.Register(watcher) rpc.HandleHTTP() listener, err := net.Listen("tcp", ":8888") if err != nil { fmt.Println("监听失败,端口可能被占用") } fmt.Println("正在监听8888端口") go http.Serve(listener, nil) }
然后是client端:
// rpc_client project main.go
package main import ( "fmt"
"net/rpc" ) func main() { fmt.Println("正在链接中...") client, err := rpc.DialHTTP("tcp", "127.0.0.1:8888") if err != nil { fmt.Println("链接服务器失败:", err) } var reply int err = client.Call("Watcher.GetInfo", 1, &reply) if err != nil { fmt.Println("调用远程服务失败", err) } fmt.Println("远程服务返回结果:", reply) }
调用结果:
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