using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
// 定義新的命名空間。
using System.Net;
using System.Net.Sockets;
using System.IO;
using System.Text;
using System.Threading;


namespace TalkServer
{
	/// <summary>
	/// 服務器端軟件。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.GroupBox groupBox1;
		private System.Windows.Forms.Panel panel1;
		private System.Windows.Forms.Button button1;
		private System.Windows.Forms.RichTextBox richTextBox1;
		private System.Windows.Forms.RichTextBox richTextBox2;
		/// <summary>
		/// 必需的設計器變量。
		/// </summary>
		private System.ComponentModel.Container components = null;

		public Form1()
		{
			//
			// Windows 窗體設計器支持所必需的
			//
			InitializeComponent();

			//
			// TODO: 在 InitializeComponent 調用后添加任何構造函數(shù)代碼
			//
		}

		/// <summary>
		/// 清理所有正在使用的資源。
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null)
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// 設計器支持所需的方法 - 不要使用代碼編輯器修改
		/// 此方法的內容。
		/// </summary>
		private void InitializeComponent()
		{
			this.groupBox1 = new System.Windows.Forms.GroupBox();
			this.button1 = new System.Windows.Forms.Button();
			this.panel1 = new System.Windows.Forms.Panel();
			this.richTextBox2 = new System.Windows.Forms.RichTextBox();
			this.richTextBox1 = new System.Windows.Forms.RichTextBox();
			this.groupBox1.SuspendLayout();
			this.panel1.SuspendLayout();
			this.SuspendLayout();
			//
			// groupBox1
			//
			this.groupBox1.Controls.AddRange(new System.Windows.Forms.Control[] {
    			this.button1});
			this.groupBox1.Dock = System.Windows.Forms.DockStyle.Top;
			this.groupBox1.Name = "groupBox1";
			this.groupBox1.Size = new System.Drawing.Size(450, 56);
			this.groupBox1.TabIndex = 0;
			this.groupBox1.TabStop = false;
			this.groupBox1.Text = " 服務器 ";
			//
			// button1
			//
			this.button1.Location = new System.Drawing.Point(176, 24);
			this.button1.Name = "button1";
			this.button1.TabIndex = 0;
			this.button1.Text = "啟動";
			this.button1.TextAlign = System.Drawing.ContentAlignment.TopCenter;
			this.button1.Click += new System.EventHandler(this.button1_Click);
			//
			// panel1
			//
			this.panel1.Controls.AddRange(new System.Windows.Forms.Control[] {
                this.richTextBox2,
                this.richTextBox1});
			this.panel1.Dock = System.Windows.Forms.DockStyle.Fill;
			this.panel1.Location = new System.Drawing.Point(0, 56);
			this.panel1.Name = "panel1";
			this.panel1.Size = new System.Drawing.Size(450, 266);
			this.panel1.TabIndex = 1;
			//
			// richTextBox2
			//
			this.richTextBox2.Dock = System.Windows.Forms.DockStyle.Fill;
			this.richTextBox2.Location = new System.Drawing.Point(0, 208);
			this.richTextBox2.Name = "richTextBox2";
			this.richTextBox2.ScrollBars = System.Windows.Forms.RichTextBoxScrollBars.ForcedBoth;
			this.richTextBox2.Size = new System.Drawing.Size(450, 58);
			this.richTextBox2.TabIndex = 0;
			this.richTextBox2.Text = "";
			this.richTextBox2.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.richTextBox2_KeyPress);
			//
			// richTextBox1
			//
			this.richTextBox1.Dock = System.Windows.Forms.DockStyle.Top;
			this.richTextBox1.Name = "richTextBox1";
			this.richTextBox1.ReadOnly = true;
			this.richTextBox1.ScrollBars = System.Windows.Forms.RichTextBoxScrollBars.ForcedBoth;
			this.richTextBox1.Size = new System.Drawing.Size(450, 208);
			this.richTextBox1.TabIndex = 10;
			this.richTextBox1.TabStop = false;
			this.richTextBox1.Text = "";
			//
			// Form1
			//
			this.AutoScaleBaseSize = new System.Drawing.Size(8, 18);
			this.ClientSize = new System.Drawing.Size(450, 322);
			this.Controls.AddRange(new System.Windows.Forms.Control[] {
                this.panel1,
                this.groupBox1});
			this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
			this.MaximizeBox = false;
			this.Name = "Form1";
			this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
			this.Text = "Form1";
			this.groupBox1.ResumeLayout(false);
			this.panel1.ResumeLayout(false);
			this.ResumeLayout(false);

		}
		#endregion

		/// <summary>
		/// 應用程序的主入口點。
		/// </summary>
		[STAThread]
		static void Main()
		{
			Application.Run(new Form1());
		}
		// 定義私有變量。
		public bool m_bConnected = false;
		public IPEndPoint p = null;
		public Socket s = null;
		public NetworkStream ns = null;
		public TextReader r = null;
		public TextWriter w = null;
		public Thread t = null;
		public void ThreadListen()
		{
			Socket recv = null;
			recv = s.Accept();
			if(recv != null)
				m_bConnected = true;
			ns = new NetworkStream(recv);
			r = new StreamReader(ns);
			w = new StreamWriter(ns);
			while(m_bConnected)
			{
				string tmp;
				try
				{
					tmp = r.ReadLine();
					if(tmp.Length != 0)
					{
						lock(this)
						{
							richTextBox1.Text = "他說："+tmp+"\n"+richTextBox1.Text;
						}
					}
				}
				catch
				{
					MessageBox.Show("連接斷開！！");
				}
			}
			recv.Shutdown(SocketShutdown.Both);
			recv.Close();
			s.Shutdown(SocketShutdown.Both);
			s.Close();
		}
		private void button1_Click(object sender, System.EventArgs e)
		{
			p = new IPEndPoint(IPAddress.Any, 34567);
			s = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
			s.Blocking = true;
			s.Bind(p);
			s.Listen(0);
			t = new Thread(new ThreadStart(this.ThreadListen));
			t.Start();
			button1.Enabled = false;
		}
		private void richTextBox2_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)
		{
			byte[] data;
			if(e.KeyChar == (char)13)
			{
				if(m_bConnected)
				{
					try
					{
						lock(this)
						{
							richTextBox1.Text = "我說："+richTextBox2.Text+richTextBox1.Text;
							w.WriteLine(richTextBox2.Text);
							w.Flush();
						}
					}
					catch
					{
						MessageBox.Show("連接斷開！！");
					}
				}
				else
				{
					MessageBox.Show("對不起，還沒有與對方連接，不能通信！");
				}
				richTextBox2.Text = "";
				richTextBox2.Focus();
			}
		}
	}
}