服务器端界面
代码：
using System;
using System.Collections.Generic;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.Net.Sockets;
using System.Threading;
namespace 聊天室服务器端
{
public partial class Form1 : Form
{
public int listenport = 8888; //服务器端监听端口
private TcpListener listener; //服务器监听器
private ArrayList clients; // 已连接客户端数组
private Thread processor; //主线程
private Socket clientsocket; //客户端套接字
private Thread clientservice; //客户端线程
public Form1()
{
InitializeComponent();
textPort.Text = "8888";
}
private void StartListening()
{
listener = new TcpListener(listenport);
listener.Start();
while (true)
{
try
{
Socket s = listener.AcceptSocket();
clientsocket = s;
clientservice = new Thread(new ThreadStart(ServiceClient));
clientservice.Start(); //开始监听
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
}
}
//listener.Stop();
}
private void ServiceClient()
{
Socket client = clientsocket;
bool alive = true;
while (alive)
{
Byte[] buffer = new Byte[2048000];
client.Receive(buffer);
// string time = System.DateTime.Now.ToString();
string clientcommand = System.Text.Encoding.Default.GetString(buffer);
string[] tokens = clientcommand.Split(new Char[] { '|' });
if (tokens[0] == "CONNECT")
{
for (int n = 0; n < clients.Count; n++)
{
Client cl = (Client)clients[n];
SendToClient(cl, "JOIN|" + tokens[1]);
}
EndPoint ep = client.RemoteEndPoint;
Client c = new Client(tokens[1], ep, clientservice, client);
clients.Add(c);
string message = "LISTEN|" + GetChatterList() + "\r\n";
SendToClient(c, message);
clientlist.Items.Add(c);
}
if (tokens[0] == "CHAT")
{
for (int n = 0; n < clients.Count; n++)
{
Client cl = (Client)clients[n];
SendToClient(cl, clientcommand);
}
}
if (tokens[0] == "PRIV")
{
string destclient = tokens[3];
for (int n = 0; n < clients.Count; n++)
{
Client cl = (Client)clients[n];
if (cl.Name.CompareTo(tokens[3]) == 0)
SendToClient(cl, clientcommand);
if (cl.Name.CompareTo(tokens[1]) == 0)
SendToClient(cl, clientcommand);
}
}
if (tokens[0] == "LEAVE")
{
int remove = 0;
bool found = false;
int c = clients.Count;
for (int n = 0; n < c; n++)
{
Client cl = (Client)clients[n];
SendToClient(cl, clientcommand);
if (cl.Name.CompareTo(tokens[1]) == 0)
{
remove = n;
found = true;
clientlist.Items.Remove(cl);
}
}
if (found)
clients.RemoveAt(remove);
client.Close();
alive = false;
}
}
}
private void SendToClient(Client cl, string message)
{
try
{
byte[] buffer = System.Text.Encoding.Default.GetBytes(message.ToCharArray());
cl.Sock.Send(buffer, buffer.Length, 0);
}
catch (Exception)
{
cl.Sock.Close();
cl.CLThread.Abort();
clients.Remove(cl);
clientlist.Items.Remove(cl.Name + " : " + cl.Host.ToString());
}
}
private string GetChatterList()
{
string chatters = "";
for (int n = 0; n < clients.Count; n++)
{
Client cl = (Client)clients[n];
chatters += cl.Name;
chatters += "|";
}
chatters.Trim(new char[] { '|' });
return chatters;
}
private void button1_Click(object sender, EventArgs e)
{
if(textPort.Text!="8888")
listenport = Convert.ToInt32( textPort.Text);
Control.CheckForIllegalCrossThreadCalls = false;
clients = new ArrayList(); //开始一个监听线程
processor = new Thread(new ThreadStart(StartListening));
processor.Start();
MessageBox.Show("开始监听！");
}
}
}
客户端界面：
代码：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.Net.Sockets;
using System.IO;
using System.Threading;
using FCG.Windows.Forms;
namespace 聊天室程序
{
public partial class Form1 : Form
{
private int serverport;
private TcpClient clientsocket;
private NetworkStream ns;
private StreamReader sr;
private Thread recThread = null;
private string serveraddress;
private string clientname;
private bool connected = false;
public Form1()
{
InitializeComponent();
// btn_savemessage.Enabled = false;
Control.CheckForIllegalCrossThreadCalls = false;
btn_shutdown.Enabled = false;
btn_stopconnect.Enabled = false;
btn_send.Enabled = false;
radioBtn_public.Checked = true;
textBox_port.Text = "8888";
textBox_ip.Text = "127.0.0.1";
}
protected override void OnClosed(EventArgs e)
{
QuitChat();
if (recThread != null && recThread.IsAlive)
recThread.Abort();
base.OnClosed(e);
}
private void CreateConnection()
{
label_show.Text = "连接到服务器";
try
{
clientsocket = new TcpClient(serveraddress, serverport);
ns = clientsocket.GetStream();
sr = new StreamReader(ns);
connected = true;
}
catch (Exception )
{
MessageBox.Show("无法连接到服务器", "ERROR", MessageBoxButtons.OK,MessageBoxIcon.Exclamation);
label_show.Text = "未连接到服务器";
}
}
private void StoreforServer()
{
try
{
string command = "CONNECT|" + textBox_username.Text;
Byte[] outbytes = System.Text.Encoding.Default.GetBytes(command);
ns.Write(outbytes, 0, outbytes.Length);
string serverresponse = sr.ReadLine();
serverresponse.Trim();
string[] tokens = serverresponse.Split(new Char[] { '|' });
if (tokens[0] == "LISTEN")
{
label_show.Text = "连接到服务器";
btn_stopconnect.Enabled = true;
}
for (int n = 1; n < tokens.Length - 1; n++)
onlineUser.Items.Add(tokens[n].Trim(new char[] { '\r', '\n' }));
// MessageBox.Show(tokens[1]);
this.Text = clientname + ": 连接到服务器";
}
catch (Exception )
{
MessageBox.Show("未连接到！", "Error", MessageBoxButtons.OK,MessageBoxIcon.Exclamation);
}
}
private void ReceiveChat()
{
bool alive = true;
while (alive)
{
try
{
Byte[] buffer = new Byte[2048000];
ns.Read(buffer, 0, buffer.Length);
string time = System.DateTime.Now.ToLongTimeString();
string chatter = System.Text.Encoding.Default.GetString(buffer);
string[] tokens = chatter.Split(new Char[] { '|' });
if (tokens[0] == "CHAT")
{
allmessage.AppendText(tokens[1].Trim());
allmessage.AppendText(" " + time + " \r\n");
allmessage.AppendText(tokens[2].Trim());
}
if (tokens[0] == "PRIV")
{
allmessage.AppendText("悄悄话来自");
allmessage.AppendText(tokens[1].Trim());
allmessage.AppendText(" "+time + "\r\n");
allmessage.AppendText(tokens[2]+ "\r\n");//不同聊天模式token格式不一样
}
if (tokens[0] == "JOIN")
{
allmessage.AppendText(time + " ");
allmessage.AppendText(tokens[1].Trim());
allmessage.AppendText("加入聊天室" + "\r\n");
string newcomer = tokens[1].Trim(new char[]{'\r','\n'});
//string newcomer = tokens[1].Trim();
//MessageBox.Show(newcomer);
onlineUser.Items.Add(newcomer);
}
if (tokens[0] == "LEAVE")
{
allmessage.AppendText(time + " ");
allmessage.AppendText(tokens[1].Trim());
allmessage.AppendText("退出了聊天室" + "\r\n");
string leaver = tokens[1].Trim(new char[]{'\r','\n'});
for (int n = 0; n < onlineUser.Items.Count ; n++)
{
if(onlineUser.Items[n].ToString().CompareTo(leaver )==0)
{
onlineUser.Items.RemoveAt(n);
}
}
}
if (tokens[0] == "QUIT")
{
ns.Close();
clientsocket.Close();
alive = false;
label_show.Text="服务器断开";
connected = false;
btn_send.Enabled = false;
btn_stopconnect.Enabled = false;
btn_shutdown.Enabled = false;
MessageBox.Show("服务器断开!");
}
}
catch (Exception ) { }
}
}
private void QuitChat()
{
if (connected)
{
try
{
string command = "LEAVE|" + clientname;
Byte[] outbytes = System.Text.Encoding.Default.GetBytes(command);
ns.Write(outbytes, 0, outbytes.Length);
clientsocket.Close();
}
catch (Exception )
{
}
}
if (recThread != null && recThread.IsAlive)
recThread.Abort();
this.Text = "聊天室客户端";
}
private void btn_connect_Click(object sender, EventArgs e)
{
if (textBox_username.Text == "" || textBox_ip.Text == "" || textBox_port.Text == "")
{
MessageBox.Show("请输入完整信息", "Error",MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
else
{
clientname = textBox_username.Text;
serveraddress = textBox_ip.Text;
serverport = int.Parse(textBox_port.Text);
textBox_ip.Enabled = false;
textBox_port.Enabled = false;
textBox_username.Enabled = false;
}
CreateConnection();
if (connected)
{
StoreforServer();
recThread = new Thread(new ThreadStart(ReceiveChat));
recThread.Start();
btn_send.Enabled = true;
btn_shutdown.Enabled = true;
btn_connect.Enabled = false;
// btn_savemessage.Enabled = true;
richTextBox1.Text = "";
}
}
private void btn_send_Click(object sender, EventArgs e)
{
try
{
if (radioBtn_public.Checked)
{
string pubcommand = "CHAT|" + clientname + "| " + richTextBox1.Text +"\r\n";
Byte[] outbytes = System.Text.Encoding.Default.GetBytes(pubcommand);
ns.Write(outbytes, 0, outbytes.Length);
richTextBox1.Text = "";
}
else
{
if (onlineUser.SelectedIndex == -1)
{
MessageBox.Show("请选择需要单独聊天的用户", "Error",
MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
string destclient = onlineUser.SelectedItem.ToString();
string command = "PRIV|" + clientname + "| " + richTextBox1.Text + "|" + destclient;
Byte[] outbytes = System.Text.Encoding.Default.GetBytes(command);
ns.Write(outbytes, 0, outbytes.Length);
richTextBox1.Text = "";
}
}
catch (Exception )
{
MessageBox.Show("失去与服务器的连接", "Error",
MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
ns.Close();
clientsocket.Close();
if (recThread != null && recThread.IsAlive)
recThread.Abort();
connected = false;
label_show.Text = "未连接到服务器";
}
}
private void message_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)
{
if (e.KeyChar == '\r')
if (connected)
btn_send_Click(sender, e);
else
btn_connect_Click(sender, e);
}
private void btn_stopconnect_Click(object sender, EventArgs e)
{
QuitChat();
btn_stopconnect.Enabled = false;
btn_connect.Enabled = true;
btn_send.Enabled = false;
btn_shutdown.Enabled = false;
ns.Close();
clientsocket.Close();
recThread.Abort();
connected = false;
onlineUser.Items.Clear();
label_show.Text = "未连接到服务器";
textBox_ip.Enabled = true;
textBox_username.Enabled = true;
}
}
}
