客户端发送信息给服务器以及服务器接收客户端发来的信息（socket）

服务器端：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace SOCKET网络编程
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void btnWatch_Click(object sender, EventArgs e)
{
//创建一个负责监听的Socket
Socket socketWatch = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
//创建IP地址和端口号对象
IPAddress ip = IPAddress.Any;//这句Any是获取自己当前本机的IP，
//IPAddress ip=IPAdress.Parse（txtIP.Text); 这句是获取textbox里面输入的地址
IPEndPoint point = new IPEndPoint(ip, Convert.ToInt32(txtPort.Text));//这里是获取文本框里输入的端口号，创建了一个端口对象，需要传入ip跟端口号
//让负责监听的Socket绑定IP地址跟端口号
socketWatch.Bind(point);
ShowMsg("监听成功");
//设置监听队列
socketWatch.Listen(10);
Thread th = new Thread(listen);
th.IsBackground = true;
th.Start(socketWatch);
}
void listen(object o)
{
Socket socketWatch = o as Socket;//as的用法就是如果可以的话，那就直接转换过去
while (true)
{
//负责监听的Socket 来接收客户端的连接 创建跟客户端通信的Socket
Socket socketSend = socketWatch.Accept();
//如果接收成功，把发送端的地址显示出来
ShowMsg(socketSend.RemoteEndPoint.ToString() + "连接成功");
//客户端连接成功后，服务器应该接收客户端发来的消息
//开启一个新线程，不停的接收客户端发来的信息
Thread th = new Thread(Recive);
th.IsBackground = true;
th.Start(socketSend);
}
}
///

void Recive(object s)
{
Socket socketSend = s as Socket;
while (true)
{
//客户端连接成功后，服务器应该接收客户端发来的消息
byte[] buffer = new byte[1024 * 1024 * 5];
int r = socketSend.Receive(buffer); //实际接收到的字节数
if(r==0)
{
break;
}
string str = Encoding.UTF8.GetString(buffer, 0, r);//把接收到的字节转成字符串
ShowMsg(socketSend.RemoteEndPoint + ":" + str);
}
}
void ShowMsg(string str)
{
txtShow.AppendText(str + "\r\n");
}
private void Form1_Load(object sender, EventArgs e)
{
Control.CheckForIllegalCrossThreadCalls = false;
}
}
}
View Code

客户端：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace 接收端
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
Socket sok = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
private void btnWatch_Click(object sender, EventArgs e)
{
IPAddress ip = IPAddress.Parse(txtIP.Text);
IPEndPoint point = new IPEndPoint(ip, Convert.ToInt32(txtPort.Text));
sok.Connect(point);
ShowMsg("连接成功");

}
void ShowMsg(string str)
{
MessageBox.Show(str + "\r\n");
}
///

///

private void button1_Click(object sender, EventArgs e)
{
string str = txtSend.Text.Trim();
byte[] buffer = System.Text.Encoding.UTF8.GetBytes(str);
sok.Send(buffer);
}
}
}
View Code