Zi 字媒體
2017-07-25T20:27:27+00:00
區網內P2P不用SERVER的C#聊天程式(C# P2P-chat-systems)
Today we are going to work on a peer-to-peer, P2P, chat system. The approach that I’m taking requires that you have two computers on a local area network, or you could have one computer and use virtual machines. Basically, you can only run one peer on a single computer.
資料來源: https://www.dreamincode.net/forums/topic/231058-peer-to-peer-chat-advanced/
GITHUB: https://github.com/jash-git/CS_P2P-chat-systems
主要程式碼:(包含 執行序UDP接收訊息 / 執行序修改UI /UDP廣播發送 )
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.Threading;
namespace P2P_chat_systems
{
public partial class ChatForm : Form
{
delegate void AddMessage(string message);
string userName;
const int port = 54545;
const string broadcastAddress = "255.255.255.255";
UdpClient receivingClient;
UdpClient sendingClient;
Thread receivingThread;
public ChatForm()
{
InitializeComponent();
}
private void ChatForm_Load(object sender, EventArgs e)
{
this.Hide();
using (LoginForm loginForm = new LoginForm())
{
loginForm.ShowDialog();
if (loginForm.UserName == "")
this.Close();
else
{
userName = loginForm.UserName;
this.Show();
}
}
textBox1.Focus();
InitializeSender();
InitializeReceiver();
}
private void InitializeSender()
{
sendingClient = new UdpClient(broadcastAddress, port);
sendingClient.EnableBroadcast = true;
}
private void InitializeReceiver()
{
receivingClient = new UdpClient(port);
ThreadStart start = new ThreadStart(Receiver);
receivingThread = new Thread(start);
receivingThread.IsBackground = true;
receivingThread.Start();
}
private void Receiver()
{
IPEndPoint endPoint = new IPEndPoint(IPAddress.Any, port);
AddMessage messageDelegate = MessageReceived;
while (true)
{
byte[] data = receivingClient.Receive(ref endPoint);
string message = Encoding.ASCII.GetString(data);
Invoke(messageDelegate, message);
}
}
private void MessageReceived(string message)
{
richTextBox1.Text += message + "\n";
}
private void button1_Click(object sender, EventArgs e)
{
textBox1.Text = textBox1.Text.TrimEnd();
if (!string.IsNullOrEmpty(textBox1.Text))
{
string toSend = userName + ":\t" + textBox1.Text;
byte[] data = Encoding.ASCII.GetBytes(toSend);
sendingClient.Send(data, data.Length);
textBox1.Text = "";
}
textBox1.Focus();
}
}
}
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