main.go

package main

import (
	"bufio"
	"errors"
	"fmt"
	"io"
	"net"
	"os"
	"os/signal"
	"syscall"
)

func main() {
	c, err := net.Dial("tcp", "tcp-echo.fly.dev:5001")
	if err != nil {
		panic(err)
	}
	defer c.Close()
	sig := make(chan os.Signal)
	signal.Notify(sig, syscall.SIGINT, syscall.SIGTERM, syscall.SIGHUP)
	go func() {
		s := <-sig
		c.Close()
		// translate the signal to a int
		os.Exit(int(s.(syscall.Signal)))
	}()
	for {
		reader := bufio.NewReader(os.Stdin)
		line, err := reader.ReadString('\n')
		if errors.Is(err, io.EOF) {
			break
		}
		if err != nil {
			panic(err)
		}
		if len(line) == 0 {
			break
		}
		_, err = c.Write([]byte(line))
		if err != nil {
			panic(err)
		}
		message, _ := bufio.NewReader(c).ReadBytes('\n')
		fmt.Println(string(message))
	}
}