p2p聊天系统(北大青鸟大二寒假作业)

P2P聊天系统 北大青鸟 大二寒假作业 主要涉及 线程池 不规则窗体 winsock编程 soket

源代码如下

 

using  System;
using  System.Collections.Generic;
using  System.ComponentModel;
using  System.Data;
using  System.Drawing;
using  System.Text;
using  System.Windows.Forms;
using  System.Threading;
using  System.Net;
using  System.Net.Sockets;
using  System.Collections;


namespace  chating
... {
    public partial class chatingto : Form
    ...{

        private bool ismousedown = false;
        private Point position;
        private Thread beginlistening;
        private frmlogin lg;
        private NetworkStream netstream;
        private Socket soc;
        public delegate void DelgMsgListened();
        private int count;
        private String message;
        private TcpListener server;
        public ArrayList threadslist;
        public Thread[] allthread;

        public chatingto()
        ...{
            //关闭线程安全检查
            Control.CheckForIllegalCrossThreadCalls = false;
            InitializeComponent();
            //实例化监听线程
            beginlistening = new Thread(new ThreadStart(listening));
            allthread = new Thread[5];
        }
        //监听方法
        private void listening()
        ...{
            
            count = 0;
            server = new TcpListener(Dns.GetHostEntry(Dns.GetHostName()).AddressList[0], 85);
            try
            ...{
                server.Start();
            }
            catch (Exception ex)
            ...{
                Console.WriteLine(ex.Message);
            }
            //循环接受客户端连接
            while (count < 5)
            ...{
                try
                ...{
                    soc = server.AcceptSocket();
                }
                catch (Exception ex)
                ...{
                    Console.WriteLine(ex.Message);
                }
                //启动聊天线程
                allthread[count] = new Thread(new ParameterizedThreadStart(beginchat));
                allthread[count].Start(soc);
                count++;
            }

        }
        //聊天方法
        private void beginchat(object socket)
        ...{
            Socket soc = (Socket)socket;
            lisMessage.Items.Add(lg.username + "已经进入了聊天");
            while (true)
            ...{
                byte[] stream = new byte[80];
                int i = soc.Receive(stream);
                //检测客户端是否退出
                if (i < 1)
                ...{
                    lisMessage.Items.Add(lg.username + "已经退出了聊天");
                    break;
                }
                message = Encoding.UTF8.GetString(stream);
                lisMessage.Items.Add(message);
            }
        }
        //解决不规则窗体的移动
        private void chatingto_MouseDown(object sender, MouseEventArgs e)
        ...{
            if (e.Button == MouseButtons.Left)
            ...{
                int x = -e.X;
                int y = -e.Y;
                position = new Point(x, y);
                ismousedown = true;
            }
        }

        private void chatingto_MouseMove(object sender, MouseEventArgs e)
        ...{
            if (ismousedown)
            ...{
                Point newposition = Control.MousePosition;
                newposition.Offset(position);
                this.Location = newposition;
            }
        }

        private void chatingto_MouseUp(object sender, MouseEventArgs e)
        ...{
            if (e.Button == MouseButtons.Left)
            ...{
                ismousedown = false;
            }
        }
        //退出是关闭资源
        private void btnexit_Click(object sender, EventArgs e)
        ...{
            server.Stop();
            beginlistening.Abort();
            Application.Exit();
        }
        //连接服务器并且设置按钮的状态
        private void btnconnect_Click(object sender, EventArgs e)
        ...{
            //实例化登陆框
            lg = new frmlogin();
            lg.ShowDialog();
            //设置按钮状态
            btnconnect.Enabled = false;
            btndisconnect.Enabled = true;
            btnsend.Enabled = true;
            btnexit.Enabled = false;

        }

        private void chatingto_Load(object sender, EventArgs e)
        ...{
            //监听线程开始
            beginlistening.Start();
        }

        private void btnsend_Click(object sender, EventArgs e)
        ...{
            //向服务器发送消息
            if (txtsendtxt.Text.Equals(""))
            ...{
                MessageBox.Show("发送的内容不能为空!");
                return;
            }
            lisMessage.Items.Add(lg.username + txtsendtxt.Text);
            byte[] sendtext = Encoding.UTF8.GetBytes(lg.username + txtsendtxt.Text);
            netstream = lg.client.GetStream();
            netstream.Write(sendtext, 0, sendtext.Length);
            txtsendtxt.Text = "";
        }
        //断开连接
        private void btndisconnect_Click(object sender, EventArgs e)
        ...{
            netstream.Close();
            lg.client.Close();
            btndisconnect.Enabled = false;
            btnsend.Enabled = false;
            btnconnect.Enabled = true;
            btnexit.Enabled = true;
        }
    }
}

 

 

登陆窗体:

 

using  System;
using  System.Collections.Generic;
using  System.ComponentModel;
using  System.Data;
using  System.Drawing;
using  System.Text;
using  System.Windows.Forms;
using  System.Net;
using  System.Net.Sockets;

namespace  chating
... {
    public partial class frmlogin : Form
    ...{
        public  string username;
        private bool ismousedown=false;
        private Point position;
        public TcpClient client;
        public frmlogin()
        ...{
            InitializeComponent();
        }
        //不规则窗体的移动
        private void frmlogin_MouseDown(object sender, MouseEventArgs e)
        ...{
            if(e.Button==MouseButtons.Left)
            ...{
                int x = -e.X;
                int y = -e.Y;
                position = new Point(x, y);
                ismousedown = true;
               
            }
        }

        private void frmlogin_MouseMove(object sender, MouseEventArgs e)
        ...{
            if(ismousedown)
            ...{
                Point newposition = Control.MousePosition;
                newposition.Offset(position);
                this.Location = newposition;
            }
        }

        private void frmlogin_MouseUp(object sender, MouseEventArgs e)
        ...{
            if(e.Button==MouseButtons.Left)
            ...{
                ismousedown = false;
            }
        }
        //连接服务器
        private void btnconnect_Click(object sender, EventArgs e)
        ...{
            username = txtname.Text+":";
            client = new TcpClient();
            try
            ...{
                client.Connect(IPAddress.Parse(txtaddress.Text), 85);
            }
            catch(Exception ex)
            ...{
                Console.WriteLine("连接错误:" + ex.Message);
                return;
            }
            this.Close();
        }
    }
}