Go Standard Library Cookbook

How to do it...

1. Open the console and create the folder chapter09/recipe02.
2. Navigate to the directory.
3. Create the serverudp.go file with the following content:

        package main        import (          "fmt"          "log"          "net"        )        func main() {          pc, err := net.ListenPacket("udp", ":7070")          if err != nil {            log.Fatal(err)          }          defer pc.Close()          buffer := make([]byte, 2048)          fmt.Println("Waiting for client...")          for {            _, addr, err := pc.ReadFrom(buffer)            if err == nil {              rcvMsq := string(buffer)              fmt.Println("Received: " + rcvMsq)              if _, err := pc.WriteTo([]byte("Received: "+rcvMsq), addr);              err != nil {                fmt.Println("error on write: " + err.Error())              }            } else {              fmt.Println("error: " + err.Error())            }          }        }

4. Start the server by go run serverudp.go:

5. Open another Terminal and execute  ...