golang学习笔记之tcp简单实现:server端与client端

package main

import (
	"fmt"
	"net"
)

func main() {
	//   simple tcp server
	//1.listen ip+port
	listener, err := net.Listen("tcp", "0.0.0.0:9090")
	if err != nil {
		fmt.Printf("listen fail, err: %v\n", err)
		return
	}

	//2.accept client request
	//3.create goroutine for each request
	for {
		conn, err := listener.Accept()
		if err != nil {
			fmt.Printf("accept fail, err: %v\n", err)
			continue
		}

		//create goroutine for each connect
		go process(conn)
	}
}

func process(conn net.Conn) {
	defer conn.Close()
	for {
		var buf [128]byte
		n, err := conn.Read(buf[:])

		if err != nil {
			fmt.Printf("read from connect failed, err: %v\n", err)
			break
		}
		str := string(buf[:n])
		fmt.Printf("receive from client, data: %v\n", str)
	}
}
package main

import (