Socket通信（一）
1、服务器端：
一般编写服务器端的流程：
先创建Socket-->调用BInd绑定ip地址和端口号---->调用Listen等待客户端连接---->在while死循环中调用Accept接收客户端的连接，并回应消息
1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Text;
5 using System.Threading.Tasks;
6 using System.Net;
7 using System.Net.Sockets;
8 using System.IO;
9
10 namespace Socket_Test
11 {
12 class Program
13 {
14 static void Main(string[] args)
15 {
16 Console.WriteLine("你好，这边是服务器端");
17
18 Socket sockets = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
19 IPAddress ipaddress = IPAddress.Parse("127.0.0.1");
20 IPEndPoint ipendPoint = new IPEndPoint(ipaddress, 1234);
21
22 sockets.Bind(ipendPoint); //切记，一定要进行Bind
23 sockets.Listen(100); //限定监听100个客户端
24
25 Console.WriteLine("服务器开始监听");
26
27 while (true)
28 {
29 Socket connfd = sockets.Accept(); //监听的是客户端的信息
30
31 //revc
32 Console.WriteLine("服务器开始接收信息");
33 byte[] buffer = new byte[1024];
34 int connfdLength = connfd.Receive(buffer); //接收到信息，然后得出信息的长度
35 string connfdString =System.Text.Encoding.UTF8.GetString(buffer, 0, connfdLength);
36 Console.WriteLine("接收到信息"+connfdString);
37
38 //send:
39
40 string sendString = DateTime.Now.ToString(); //把当前的时间进行传递
41 byte[] sendByte = System.Text.Encoding.Default.GetBytes(sendString);
42 }
43 }
44 }
45 }
2、客户端：
1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Text;
5 using System.Threading.Tasks;
6 using System.Net;
7 using System.Net.Sockets;
8
9 //客户端
10 namespace Socket_Client
11 {
12 class Program
13 {
14
15 private Socket socket;
16 private string ipAddress = "127.0.0.1"; //IP地址
17 private int port = 1234; //端口号
18
19 private const int buffer_Size = 1024; //一次的接收大小
20 byte[] readBuffer = new byte[buffer_Size]; //用来接收数据的数组
21
22
23 private void Connetion()
24 {
25 socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); //建立套接字
26
27 //connect
28 socket.Connect(ipAddress, port);
29
30 //send:
31 string Send_str = "Unity";
32 byte[] bytes = System.Text.Encoding.Default.GetBytes(Send_str);
33 socket.Send(bytes);
34
35 //recv:
36 int count = socket.Receive(readBuffer);
37 string Recv_str = System.Text.Encoding.UTF8.GetString(readBuffer, 0, count);
38 Console.WriteLine("客户端接收到信息："+Recv_str);
39
40 //close:关闭连接;
41 socket.Close();
42
43 }
44
45 static void Main(string[] args)
46 {
47 Program p = new Program();
48 p.Connetion();
49 }
50 }
51 }
