Go TCP Server Create

package main //from  w ww. j a  va2s. c o  m

import ( 
    "encoding/gob" 
    "fmt" 
    "net" 
) 

func server() { 
    // listen on a port 
    ln, err  := net.Listen("tcp", ":9999") 
    if err  != nil { 
      fmt.Println(err) 
      return 
    } 
    for { 
        // accept a connection 
        c, err  := ln.Accept() 
        if err  != nil { 
          fmt.Println(err) 
          continue 
        } 
        // handle the connection 
        go handleServerConnection(c) 
    } 
} 

func handleServerConnection(c net.Conn) { 
    // receive the message 
    var msg string 
    err  := gob.NewDecoder(c).Decode(&msg) 
    if err  != nil { 
        fmt.Println(err) 
    } else { 
        fmt.Println("Received", msg) 
    } 
    c.Close() 
} 

func client() { 
    // connect to the server 
    c, err  := net.Dial("tcp", "127.0.0.1:9999") 
    if err  != nil { 
        fmt.Println(err) 
        return 
    } 

    // send the message 
    msg  := "Hello, World" 
    fmt.Println("Sending", msg) 
    err = gob.NewEncoder(c).Encode(msg) 
    if err  != nil { 
        fmt.Println(err) 
    } 

    c.Close() 
} 

func main() { 
    go server() 
    go client() 

    var input string 
    fmt.Scanln(&input) 
}