C# 利用websocket实现简易聊天功能——服务端
前言
- 使用C#语言进行开发，基于.NET FrameWork4
- 功能包含群聊，和私聊
界面
界面设计代码
namespace chat_server
{
partial class Form1
{
private System.ComponentModel.IContainer components = null;
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows 窗体设计器生成的代码
private void InitializeComponent()
{
this.textBoxIP = new System.Windows.Forms.TextBox();
this.labelIP = new System.Windows.Forms.Label();
this.labelPort = new System.Windows.Forms.Label();
this.textBoxPort = new System.Windows.Forms.TextBox();
this.buttonStart = new System.Windows.Forms.Button();
this.textBoxLog = new System.Windows.Forms.TextBox();
this.textBoxMsg = new System.Windows.Forms.TextBox();
this.buttonSend = new System.Windows.Forms.Button();
this.SuspendLayout();
this.textBoxIP.Location = new System.Drawing.Point(145, 25);
this.textBoxIP.Name = "textBoxIP";
this.textBoxIP.Size = new System.Drawing.Size(100, 25);
this.textBoxIP.TabIndex = 0;
this.textBoxIP.Text = "127.0.0.1";
this.labelIP.AutoSize = true;
this.labelIP.Location = new System.Drawing.Point(90, 28);
this.labelIP.Name = "labelIP";
this.labelIP.Size = new System.Drawing.Size(31, 15);
this.labelIP.TabIndex = 1;
this.labelIP.Text = "IP:";
this.labelPort.AutoSize = true;
this.labelPort.Location = new System.Drawing.Point(371, 28);
this.labelPort.Name = "labelPort";
this.labelPort.Size = new System.Drawing.Size(54, 15);
this.labelPort.TabIndex = 3;
this.labelPort.Text = "port：";
this.textBoxPort.Location = new System.Drawing.Point(452, 25);
this.textBoxPort.Name = "textBoxPort";
this.textBoxPort.Size = new System.Drawing.Size(100, 25);
this.textBoxPort.TabIndex = 2;
this.textBoxPort.Text = "6666";
this.buttonStart.Location = new System.Drawing.Point(718, 13);
this.buttonStart.Name = "buttonStart";
this.buttonStart.Size = new System.Drawing.Size(142, 45);
this.buttonStart.TabIndex = 4;
this.buttonStart.Text = "开启服务";
this.buttonStart.UseVisualStyleBackColor = true;
this.buttonStart.Click += new System.EventHandler(this.buttonStart_Click);
this.textBoxLog.Location = new System.Drawing.Point(28, 73);
this.textBoxLog.Multiline = true;
this.textBoxLog.Name = "textBoxLog";
this.textBoxLog.Size = new System.Drawing.Size(832, 406);
this.textBoxLog.TabIndex = 5;
this.textBoxMsg.Location = new System.Drawing.Point(28, 499);
this.textBoxMsg.Name = "textBoxMsg";
this.textBoxMsg.Size = new System.Drawing.Size(653, 25);
this.textBoxMsg.TabIndex = 6;
this.buttonSend.Location = new System.Drawing.Point(761, 499);
this.buttonSend.Name = "buttonSend";
this.buttonSend.Size = new System.Drawing.Size(99, 43);
this.buttonSend.TabIndex = 7;
this.buttonSend.Text = "发送";
this.buttonSend.UseVisualStyleBackColor = true;
this.buttonSend.Click += new System.EventHandler(this.buttonSend_Click);
this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 15F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(947, 567);
this.Controls.Add(this.buttonSend);
this.Controls.Add(this.textBoxMsg);
this.Controls.Add(this.textBoxLog);
this.Controls.Add(this.buttonStart);
this.Controls.Add(this.labelPort);
this.Controls.Add(this.textBoxPort);
this.Controls.Add(this.labelIP);
this.Controls.Add(this.textBoxIP);
this.Name = "Form1";
this.Text = "服务器";
this.Load += new System.EventHandler(this.Form1_Load);
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
private System.Windows.Forms.TextBox textBoxIP;
private System.Windows.Forms.Label labelIP;
private System.Windows.Forms.Label labelPort;
private System.Windows.Forms.TextBox textBoxPort;
private System.Windows.Forms.Button buttonStart;
private System.Windows.Forms.TextBox textBoxLog;
private System.Windows.Forms.TextBox textBoxMsg;
private System.Windows.Forms.Button buttonSend;
}
}
源代码
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 chat_server
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
}
Dictionary<Socket, String> userContain = new Dictionary<Socket, string>();
private void buttonStart_Click(object sender, EventArgs e)
{
try
{
Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
String ip = textBoxIP.Text;
int port = Convert.ToInt32(textBoxPort.Text);
socket.Bind(new IPEndPoint(IPAddress.Parse(ip), port));
socket.Listen(10);
ThreadPool.QueueUserWorkItem(new WaitCallback(connect), socket);
}
catch
{
MessageBox.Show("启动服务器失败");
}
}
private void connect(object socket)
{
var serverSockert = socket as Socket;
showLog("服务器正常启动，开始接受客户端的数据");
byte[] data = new byte[1024];
int len;
String name;
while (true)
{
try
{
var proxSocket = serverSockert.Accept();
len = proxSocket.Receive(data, 0, data.Length, SocketFlags.None);
name = Encoding.Default.GetString(data, 0, len);
showLog(String.Format("客户端 {0} 用户名 {1} 连接服务器", proxSocket.RemoteEndPoint.ToString(),name));
String msg = String.Format("用户{0}上线了", name);
sendMsg(msg);
userContain[proxSocket] = name;
ThreadPool.QueueUserWorkItem(new WaitCallback(this.recevie), proxSocket);
}
catch
{
MessageBox.Show("接受异常");
break;
}
}
}
private void recevie(object socket)
{
var proxSocket = socket as Socket;
byte[] data = new byte[1024 * 1024];
String msg;
int len = 0;
String name = userContain[proxSocket];
while (true)
{
try
{
len = proxSocket.Receive(data, 0, data.Length, SocketFlags.None);
}
catch
{
msg = String.Format("客户端{0}异常退出",
proxSocket.RemoteEndPoint.ToString());
showLog(msg);
msg = String.Format("用户{0}下线了", name);
sendMsg(msg);
userContain.Remove(proxSocket);
stopConnect(proxSocket);
return;
}
if (len <= 0)
{
msg = String.Format("客户端{0}正常退出",
proxSocket.RemoteEndPoint.ToString());
showLog(msg);
msg = String.Format("用户{0}下线了", name);
sendMsg(msg);
userContain.Remove(proxSocket);
stopConnect(proxSocket);
return;
}
msg = Encoding.Default.GetString(data, 0, len);
bool flag = true;
if (msg.StartsWith("@"))
{
int index = msg.IndexOf(":");
String targetName = msg.Substring(1, index-1);
msg = msg.Substring(index + 1);
foreach(var user in userContain)
{
if(targetName.Equals(user.Value)&&user.Key.Connected)
{
msg = String.Format("用户{0} 单独对你说：{1}",name,msg);
data = Encoding.Default.GetBytes(msg);
user.Key.Send(data, 0, data.Length, SocketFlags.None);
flag = false;
break;
}
}
}
if (flag)
{
msg = String.Format("用户{0}：{1}", name, msg);
sendMsg(msg);
}
}
}
private void stopConnect(Socket socket)
{
try
{
if (socket.Connected)
{
socket.Shutdown(SocketShutdown.Both);
socket.Close(100);
}
}
catch
{
}
}
private void showLog(String msg)
{
if (textBoxLog.InvokeRequired)
{
textBoxLog.Invoke(new Action<String>(
s => {
this.textBoxLog.Text += msg+"\r\n";
}),msg);
}
else
{
this.textBoxLog.Text += msg;
}
}
private void buttonSend_Click(object sender, EventArgs e)
{
String msg = String.Format("服务器发布通知信息{0}", textBoxMsg.Text);
sendMsg(msg);
}
private void sendMsg(String msg)
{
byte[] data = new byte[1024 * 1024];
data = Encoding.Default.GetBytes(msg);
foreach (var user in userContain)
{
if (user.Key.Connected)
{
user.Key.Send(data, 0, data.Length, SocketFlags.None);
}
}
}
}
}
