要调试公司某项目里的一个功能，因为要准备测试环境，趁这个机会重温了一下Socket（全还给老师了 -_-#），做个备份。

C# Server

        static void Main(string[] args)
        {
            int port = 81;
            string host = "192.168.1.151";

            //创建终结点
            IPAddress ip = IPAddress.Parse(host);
            IPEndPoint ipe = new IPEndPoint(ip, port);

            //创建Socket并开始监听

            Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); //创建一个Socket对象，如果用UDP协议，则要用SocketTyype.Dgram类型的套接字
            s.Bind(ipe);    //绑定EndPoint对象(2000端口和ip地址)
            s.Listen(0);    //开始监听

            Console.WriteLine("等待客户端连接");
            
            while (true)
            {
                //接受到Client连接，为此连接建立新的Socket，并接受消息
                Socket temp = s.Accept();   //为新建立的连接创建新的Socket
                Console.WriteLine("建立连接");
                string recvStr = "";
                byte[] recvBytes = new byte[1024];
                int bytes;
                bytes = temp.Receive(recvBytes, recvBytes.Length, 0); //从客户端接受消息
                recvStr += Encoding.UTF8.GetString(recvBytes, 0, bytes);

                //给Client端返回信息
                Console.WriteLine("server get message:{0}", recvStr);    //把客户端传来的信息显示出来
                string sendStr = "server receive message successful!";
                byte[] bs = Encoding.UTF8.GetBytes(sendStr);
                temp.Send(bs, bs.Length, 0);  //返回信息给客户端
                temp.Close();
            }

            s.Close();
            Console.ReadLine();
            Console.Read();
        }

C# Client

        static void Main(string[] args)
        {
            int port = 81;
            string host = "192.168.1.151";
            //创建终结点EndPoint
            IPAddress ip = IPAddress.Parse(host);
            IPEndPoint ipe = new IPEndPoint(ip, port);   //把ip和端口转化为IPEndPoint的实例

            //向服务器发送信息
            string sendStr = string.Empty;

            while (true)
            {
                Console.WriteLine("请输入要发送的内容...");
                sendStr = Console.ReadLine();
                if (string.IsNullOrWhiteSpace(sendStr))
                {
                    Environment.Exit(0);
                }
                else
                {
                    Socket c = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);   //  创建Socket
                    c.Connect(ipe); //连接到服务器
                    byte[] bs = Encoding.UTF8.GetBytes(sendStr);   //把字符串编码为字节

                    Console.WriteLine("Send message");
                    c.Send(bs, bs.Length, 0); //发送信息

                    //接受从服务器返回的信息
                    string recvStr = "";
                    byte[] recvBytes = new byte[1024];
                    int bytes;
                    bytes = c.Receive(recvBytes, recvBytes.Length, 0);    //从服务器端接受返回信息
                    recvStr += Encoding.UTF8.GetString(recvBytes, 0, bytes);
                    Console.WriteLine("client get message:{0}", recvStr);    //回显服务器的返回信息
                    c.Disconnect(true);
                    //一定记着用完Socket后要关闭
                    c.Close();
                }
            }
        }

nodejs client

var net = require('net');
var client = new net.Socket();
//client.setEncoding("utf8");
client.on('data', function(data) {
	console.log('DATA: ' + data);
});

client.on('error', function(err) {
	console.log('ERROR: ' + err);
});

client.on('end', function(data) {
	console.log('END: ' + data);
});

client.connect('81', '192.168.1.151', function () {
	console.log('connection success')
})

var msg = "absdfsf中文";
client.write(msg, "utf8", function(){
	console.log('send success....')
})