basic version is working

package main

import (

	"bufio"

	"log"

	"net"

)

func main() {

	log.Printf("Started perplex client.")

	conn, err := net.Dial("tcp", "localhost:4321")

	if err != nil {

		log.Panic(err)

	}

	defer disconnect(conn)

	log.Printf("Connected to: %v->%v", conn.LocalAddr(), conn.RemoteAddr())

	reader := bufio.NewReader(conn)

	//writer := bufio.NewWriter(conn)

	line, prefix, err := reader.ReadLine()

	if err != nil {

		log.Panic(err)

	}

	text := string(line)

	log.Printf("isPrefix: %v - line: %s", prefix, text)

	conn.Write([]byte("quit\n"))

}

func disconnect(conn net.Conn) {

	defer conn.Close()

	log.Printf("Disconnecting from: %v->%v", conn.LocalAddr(), conn.RemoteAddr())

}

package main

import (

	"bufio"

	"log"

	"net"

)

func main() {

	log.Printf("Started perplex server.")

	ln, err := net.Listen("tcp", ":4321")

	if err != nil {

		log.Panic(err)

	}

	defer ln.Close()

	for {

		conn, err := ln.Accept()

		if err != nil {

			log.Printf("Accept() failed with: %v", err)

		}

		go handleConnection(conn)

	}

}

func handleConnection(conn net.Conn) {

	defer disconnect(conn)

	log.Printf("Connected from: %v->%v", conn.RemoteAddr(), conn.LocalAddr())

	banner := "Welcome to perplex!\n"

	_, err := conn.Write([]byte(banner))

	if err != nil {

		log.Print(err)

	}

	reader := bufio.NewReader(conn)

	loop := true

	for loop {

		line, _, err := reader.ReadLine()

		if err != nil {

			log.Print(err)

		} else {

			text := string(line)

			switch text {

			case "help":

				help := `

The perplex server currently understands:

 help : display this text

 quit : terminate the connection

`

				conn.Write([]byte(help))

			case "quit":

				loop = false

				conn.Write([]byte("Good-Bye!\n"))

			}

		}

	}

}

func disconnect(conn net.Conn) {

	defer conn.Close()

	log.Printf("Disconnected from: %v->%v", conn.RemoteAddr(), conn.LocalAddr())

}