/*server.go */

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package main

import (
        "bufio"
        "fmt"
        "net"
        "time"
)

func main() {
        var unixAddr *net.UnixAddr

        unixAddr, _ = net.ResolveUnixAddr("unix", "/tmp/unix_sock")

        unixListener, _ := net.ListenUnix("unix", unixAddr)

        defer unixListener.Close()

        for {
                unixConn, err := unixListener.AcceptUnix()
                if err != nil {
                        continue
                }

                fmt.Println("A client connected : " + unixConn.RemoteAddr().String())
                go unixPipe(unixConn)
        }

}

func unixPipe(conn *net.UnixConn) {
        ipStr := conn.RemoteAddr().String()
        defer func() {
                fmt.Println("disconnected :" + ipStr)
                conn.Close()
        }()
        reader := bufio.NewReader(conn)

        for {
                message, err := reader.ReadString('\n')
                if err != nil {
                        return
                }

                fmt.Println(string(message))
                msg := time.Now().String() + "\n"
                b := []byte(msg)
                conn.Write(b)
        }
}

/* client.go */

package main

import (
        "bufio"
        "fmt"
        "net"
        "time"
)

var quitSemaphore chan bool

func main() {
        var unixAddr *net.UnixAddr
        unixAddr, _ = net.ResolveUnixAddr("unix", "/tmp/unix_sock")

        conn, _ := net.DialUnix("unix", nil, unixAddr)
        defer conn.Close()
        fmt.Println("connected!")

        go onMessageRecived(conn)

        b := []byte("time\n")
        conn.Write(b)

        <-quitSemaphore
}

func onMessageRecived(conn *net.UnixConn) {
        reader := bufio.NewReader(conn)
        for {
                msg, err := reader.ReadString('\n')
                fmt.Println(msg)
                if err != nil {
                        quitSemaphore <- true
                        break
                }
                time.Sleep(time.Second)
                b := []byte(msg)
                conn.Write(b)
        }
}