服務器端代碼：
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.Windows.Forms;
namespace Server
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
public List<Socket> serverSockeList = new List<Socket>();
Socket serverSocke = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
bool kg=true;
string recStr = "";
byte[] recByte = new byte[1000];
int bytes = 0;
delegate void invokeInfo(string obj);
private void But_Starlisten_Click(object sender, EventArgs e)
{
try
{
if (string.IsNullOrEmpty(txt_IP.Text) || string.IsNullOrEmpty(txt_port.Text))
return;
IPEndPoint ipe = new IPEndPoint(IPAddress.Parse(txt_IP.Text), int.Parse(txt_port.Text));
serverSocke.Bind(ipe);
serverSocke.Listen(10000);
txt_MessageLog.Text += "監聽已經打開，請等待\r\n";
Thread conn = new Thread(new ParameterizedThreadStart(GetALLClientConn));
conn.IsBackground = true;
conn.Start(serverSocke);
}
catch (Exception ex)
{
txt_MessageLog.Text += "服務異常\r\n";
}
}
/// <summary>
/// 關閉所有的Socket協議和線程
/// </summary>
public void Close()
{
try
{
kg = false;
foreach (var item in serverSockeList)
{
if (item.Connected)
item.Shutdown(SocketShutdown.Both);
if (item != null)
item.Close();
}
if (serverSocke.Connected)
serverSocke.Shutdown(SocketShutdown.Both);
if (serverSocke != null)
serverSocke.Close();
}
catch {
txt_MessageLog.Text += "服務器連接關閉\r\n";
}
}
/// <summary>
/// 獲取所有客戶端連接
/// </summary>
/// <param name="obj">客戶端Socket對象</param>
public void GetALLClientConn(object obj)
{
Socket serverSocke = obj as Socket;
try
{
while (kg)
{
Socket newSocket = serverSocke.Accept();
serverSockeList.Add(newSocket);
txt_MessageLog.Invoke(new invokeInfo(Output), newSocket.RemoteEndPoint + "連接已經建立");
Thread t = new Thread(new ParameterizedThreadStart(GetInfo));
t.IsBackground = true;
t.Start(newSocket);
}
}
catch {
txt_MessageLog.Invoke(new invokeInfo(Output), "服務器異常");
}
}
/// <summary>
/// 獲取該Socket對象的信息
/// </summary>
/// <param name="newSocket">Socket對象</param>
public void GetInfo(object obj)
{
Socket newSocket = obj as Socket;
try
{
while (kg)
{
bytes = newSocket.Receive(recByte, recByte.Length, SocketFlags.None);
if (bytes <= 0)
{
txt_MessageLog.Invoke(new invokeInfo(Output), newSocket.RemoteEndPoint + "連接已斷開");
serverSockeList.Remove(newSocket);
if (newSocket.Connected)
newSocket.Shutdown(SocketShutdown.Both);
newSocket.Disconnect(false);
newSocket.Close();
break;
}
recStr = Encoding.UTF8.GetString(recByte, 0, bytes);
txt_MessageLog.Invoke(new invokeInfo(Output), recStr);
byte[] sendBytes = Encoding.UTF8.GetBytes(recStr);
foreach (var item in serverSockeList)
{
if (item != newSocket)
item.Send(sendBytes);
}
}
}
catch (Exception ex)
{
txt_MessageLog.Invoke(new invokeInfo(Output), newSocket.RemoteEndPoint + "的信息接收異常");
}
}
public void Output(string info)
{
txt_MessageLog.Text += info + "\r\n";
}
//發送信息
private void But_Send_Click(object sender, EventArgs e)
{
try
{
if (string.IsNullOrEmpty(txt_Send.Text))
return;
string sendStr = txt_Send.Text;
txt_Send.Text = "";
txt_MessageLog.Text += "服務端信息：" + sendStr + "\r\n";
byte[] sendBytes = Encoding.UTF8.GetBytes("服務端信息：" + sendStr);
Socket error = null;
foreach (var item in serverSockeList)
{
if (item.Poll(-1,SelectMode.SelectWrite))
item.Send(sendBytes);
else
error = item;
}
if (error != null)
serverSockeList.Remove(error);
}
catch (Exception ex)
{
txt_MessageLog.Text += "服務端發送信息異常\r\n";
}
}
private void But_endlisten_Click(object sender, EventArgs e)
{
Close();
}
private void Form1_FormClosed(object sender, FormClosedEventArgs e)
{
Close();
}
}
}
服務器端界面：
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客戶端代碼：
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.Windows.Forms;
using System.Threading;
namespace Client
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
public Socket clientSocket;
bool kg = true;
delegate void invokeInfo(string obj);
string recStr = "";
byte[] recBytes = new byte[4096];
int bytes = 0;
public void Output(string info)
{
txt_MessageLog.Text += info + "\r\n";
}
private void But_Send_Click(object sender, EventArgs e)
{
try
{
if (string.IsNullOrEmpty(txt_Send.Text))
return;
string sendStr = txt_Send.Text;
txt_Send.Text = "";
txt_MessageLog.Text += "我：" + sendStr + "\r\n";
byte[] sendBytes = Encoding.UTF8.GetBytes(clientSocket.RemoteEndPoint + ":" + sendStr);
int i= clientSocket.Send(sendBytes);
}
catch (Exception ex)
{
txt_MessageLog.Text += "信息發送異常\r\n";
}
}
private void But_Starlisten_Click(object sender, EventArgs e)
{
try
{
clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
if (string.IsNullOrEmpty(txt_IP.Text) || string.IsNullOrEmpty(txt_port.Text))
return;
IPEndPoint ipe = new IPEndPoint(IPAddress.Parse(txt_IP.Text), int.Parse(txt_port.Text));
clientSocket.Connect(ipe);
txt_MessageLog.Text += "連接成功\r\n";
groupBox1.Text += txt_IP.Text;
Thread t = new Thread(new ParameterizedThreadStart(GetInfo));
t.IsBackground = true;
t.Start(clientSocket);
}
catch (Exception ex)
{
txt_MessageLog.Text += "服務器連接異常\r\n";
}
}
private void But_endlisten_Click(object sender, EventArgs e)
{
Close();
}
private void Form1_FormClosed(object sender, FormClosedEventArgs e)
{
Close();
}
/// <summary>
/// 接收服務端信息
/// </summary>
public void GetInfo(object o)
{
Socket clientSocket = o as Socket;
try
{
while (kg)
{
bytes = clientSocket.Receive(recBytes, recBytes.Length, SocketFlags.None);
if (bytes <= 0)
{
txt_MessageLog.Invoke(new invokeInfo(Output), "服務器連接已經關閉");
if (clientSocket.Connected)
clientSocket.Shutdown(SocketShutdown.Both);
clientSocket.Disconnect(false);
clientSocket.Close();
break;
}
recStr = Encoding.UTF8.GetString(recBytes, 0, bytes);
txt_MessageLog.Invoke(new invokeInfo(Output), recStr);
}
}
catch (Exception ex)
{
txt_MessageLog.Invoke(new invokeInfo(Output), "服務器的信息接收異常，原因：" + ex.Message+"\r\n");
}
}
/// <summary>
/// 關閉Socket
/// </summary>
public void Close()
{
try
{
kg = false;
if (clientSocket.Connected)
clientSocket.Shutdown(SocketShutdown.Both);
clientSocket.Close();
}
catch { }
}
}
}
客戶端界面：
客戶端代碼：
