Shulou(Shulou.com)06/01 Report--

Today, I would like to talk to you about how to carry out Go jsonrpc, many people may not know much about it. In order to make you understand better, the editor has summarized the following contents for you. I hope you can get something according to this article.

Hello, everyone. As I have been busy for a long time, I would like to introduce to you the following jsonrpc usage of go. I don't say much about the theoretical principle. I personally think it is best to understand the principle by looking at the comments of the code.

(1) Server code

Package main

Import (

"fmt"

"log"

"net"

"net/rpc"

"net/rpc/jsonrpc"

"os"

)

/ / Resp return value structure

Type Resp struct {

Country string

Province string

City string

Latitude float64

Longitude float64

TimeZone string

Data string

}

/ / Serve

Type Serve struct {

}

/ / Parameter structure

Type Agrs struct {

IpString string

Data string

}

/ / json rpc processes requests

/ / GetData acquires data

Func (s * Serve) GetData (agr Agrs, res * Resp) error {

Res.City = "Nanning"

Res.Province = "Guangxi"

Res.Country = "China"

Res.Latitude = 888.888

Res.Longitude = 111.111

Res.TimeZone = "ssss"

Res.Data = agr.Data / / return the data you sent

Return nil

}

Func main () {

/ / initialize jsonRPC

Serve: = & Serve {}

/ / Registration service

Rpc.Register (serve)

/ / bind port

Address: = "127.0.0.1 purl 8080"

TcpAddr, err: = net.ResolveTCPAddr ("tcp", address)

CheckError (err)

Listener, err: = net.ListenTCP ("tcp", tcpAddr)

CheckError (err)

Log.Println ("json rpc is listening", tcpAddr)

/ / always connect

For {

Conn, err: = listener.Accept ()

If err! = nil {

Continue

}

Go jsonrpc.ServeConn (conn)

}

}

/ / Verification error

Func checkError (err error) {

If err! = nil {

Fmt.Println ("Fatal error", err.Error ())

Os.Exit (1)

}

}

(2) client code

Package main

Import (

"fmt"

"log"

"net/rpc"

"net/rpc/jsonrpc"

)

Type Response struct {

Country string

Province string

City string

Latitude float64

Longitude float64

TimeZone string

Data string

}

Type Client struct {

* rpc.Client

}

Type agrs struct {

IpString string

Data string

}

Func main () {

Var (

C = new (Client)

Err error

)

If c.Client, err = jsonrpc.Dial ("tcp", "127.0.0.1 jsonrpc.Dial 8080"); err! = nil {

Log.Fatal ("dialing:", err)

}

/ / Synchronous call

Var res Response

Var an agrs

A.IpString = "219.140.227.235"

A.Data = "is my data"

Err = c.Call ("Serve.GetData", & a, & res)

If err! = nil {

Log.Fatal ("ip2addr error:", err)

}

Fmt.Println (res)

}

(3) run

Run server.go

Then run client.go

You'll have a surprise.

After reading the above, do you have any further understanding of how to carry out Go jsonrpc? If you want to know more knowledge or related content, please follow the industry information channel, thank you for your support.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.