我本人也才接触GO两个多月的历史,看了几本英文教程,读了些Github上面的源码,但已经被GO的语言的简洁和强大的并发能力所吸收,也打算继续深入的学习,并应用到自己的工作之中。GO语言目前主要适用于服务端的开发,我参考了一些网络上的教程,做了一些TCP服务端的小练习,其中服务端用GO语言开发,客户端采用C#。具体参考如下的代码:https://github.com/yfl8910/gotcpserver
效果图如下:
服务端代码:
- package main
- import (
- "net"
- "fmt"
- )
- var ( maxRead = 25
- msgStop = []byte("cmdStop")
- msgStart = []byte("cmdContinue")
- )
- func main() {
- hostAndPort := "localhost:54321"
- listener := initServer(hostAndPort)
- for {
- conn, err := listener.Accept()
- checkError(err, "Accept: ")
- go connectionHandler(conn)
- }
- }
- func initServer(hostAndPort string) *net.TCPListener {
- serverAddr, err := net.ResolveTCPAddr("tcp", hostAndPort)
- checkError(err, "Resolving address:port failed: '" + hostAndPort + "'")
- //listener, err := net.ListenTCP("tcp", serverAddr)
- listener, err := net.ListenTCP("tcp", serverAddr)
- checkError(err, "ListenTCP: ")
- println("Listening to: ", listener.Addr().String())
- return listener
- }
- func connectionHandler(conn net.Conn) {
- connFrom := conn.RemoteAddr().String()
- println("Connection from: ", connFrom)
- talktoclients(conn)
- for {
- var ibuf []byte = make([]byte, maxRead + 1)
- length, err := conn.Read(ibuf[0:maxRead])
- ibuf[maxRead] = 0 // to prevent overflow
- switch err {
- case nil:
- handleMsg(length, err, ibuf)
- default:
- goto DISCONNECT
- }
- }
- DISCONNECT:
- err := conn.Close()
- println("Closed connection:" , connFrom)
- checkError(err, "Close:" )
- }
- func talktoclients(to net.Conn) {
- wrote, err := to.Write(msgStart)
- checkError(err, "Write: wrote " + string(wrote) + " bytes.")
- }
- func handleMsg(length int, err error, msg []byte) {
- if length > 0 {
- for i := 0; ; i++ {
- if msg[i] == 0 {
- break
- }
- }
- fmt.Printf("Received data: %v", string(msg[0:length]))
- fmt.Println(" length:",length)
- }
- }
- func checkError(error error, info string) {
- if error != nil {
- panic("ERROR: " + info + " " + error.Error()) // terminate program
- }
- }
客户端代码:
- using System;
- using System.Collections.Generic;
- using System.ComponentModel;
- using System.Data;
- using System.Drawing;
- using System.Text;
- using System.Windows.Forms;
- using System.Net;
- using System.Net.Sockets;
- using System.Threading;
- namespace TcpClient
- {
- public partial class Form1 : Form
- {
- private IPAddress _ipServer; //服务器IP
- private IPEndPoint _myServer; //服务器终端
- private Socket _connectSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);//连接套接字
- private int _port; //端口
- private Thread receiveThread = null;
- public Form1()
- {
- InitializeComponent();
- }
- private bool ValidateInfo() //检验所填信息是否合法
- {
- if (!IPAddress.TryParse(txtbxIP.Text, out _ipServer))
- {
- MessageBox.Show("IP地址不合法!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
- return false;
- }
- if (!int.TryParse(txtbxPortNum.Text, out _port))
- {
- MessageBox.Show("端口号不合法!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
- return false;
- }
- else
- {
- if (_port < 1024 || _port > 65535)
- {
- MessageBox.Show("端口号不合法!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
- return false;
- }
- }
- return true;
- }
- private bool ConnectServer() //连接服务器
- {
- try
- {
- _connectSocket.Connect(_myServer);
- _connectSocket.Send(System.Text.Encoding.UTF8.GetBytes(txtbxUser.Text.ToString()));
- return true;
- }
- catch
- {
- MessageBox.Show("服务器连接异常", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
- return false;
- }
- }
- private void button1_Click(object sender, EventArgs e)
- {
- try
- {
- _connectSocket.Send(System.Text.Encoding.UTF8.GetBytes(comboBox1.Text.ToString()));
- }
- catch
- {
- MessageBox.Show("服务器连接异常", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
- }
- }
- private void button3_Click(object sender, EventArgs e)
- {
- if (!ValidateInfo())
- {
- return;
- }
- _myServer = new IPEndPoint(_ipServer, _port);
- if (ConnectServer() == true)
- {
- MessageBox.Show("连接成功!");
- }
- }
- private void button2_Click(object sender, EventArgs e)
- {
- this.Close();
- }
- private void button4_Click(object sender, EventArgs e)
- {
- for (int i = 0; i < 1000; i++) {
- Socket _connectSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
- _connectSocket.Connect(_myServer);
- _connectSocket.Send(System.Text.Encoding.UTF8.GetBytes(comboBox1.Text.ToString()+i));
- Thread.Sleep(2);
- }
- }
- }
- }
原文链接:http://www.cnblogs.com/yfl8910/archive/2012/12/20/2825528.html
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