一、Server端
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;
using System.Threading;
using System.Collections;
namespace KG_Socket_Server
{
public partial class FrmServer : Form
{
public FrmServer()
{
InitializeComponent();
}
private IPAddress serverIP = IPAddress.Parse("127.0.0.1");//以本機作測試
private IPEndPoint serverFullAddr;//完整終端地址
private Socket sock;
private System.Timers.Timer myTimer;
private ArrayList alSock; //當建立了多個連接時用於保存連接
private void btStart_Click(object sender, EventArgs e)
{
serverFullAddr = new IPEndPoint(serverIP, 1000);//取端口號1000
//構造Socket對象，套接字類型爲“流套接字”，指定五元組中的協議元
sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream,ProtocolType.Tcp);
//指定五元組中的本地二元，即本地主機地址和端口號
sock.Bind(serverFullAddr);
//監聽是否有連接傳入，指定掛起的連接隊列的最大值爲20
sock.Listen(20);
alSock = new ArrayList();
//構造定時器，時間間隙爲1秒，即每隔一秒執行一次accept()方法，以獲取連接請求隊列中//第一個掛起的連接請求
myTimer = new System.Timers.Timer(1000);
myTimer.Elapsed += new System.Timers.ElapsedEventHandler(myTimer_Elapsed);
myTimer.Enabled = true;
}
private void myTimer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
{
myTimer.Enabled = false;
//執行accept()，當掛起隊列爲空時將阻塞本線程，同時由於上一語句，定時器將停止，直//至有連接傳入
Socket acceptSock = sock.Accept();
//將accept()產生的Socket對象存入ArrayList
alSock.Add(acceptSock);
// 構造Threading.Timer對象，這將導致程序另啓線程。線程將執行回調函數，該委託限制//函數參數須爲object型。Threading.Timer構造器的第二個參數即傳入回調函數的參數；第//三個參數指定調用回調函數之前的延時，取0則立即啓動；最後一個參數指定調用回調函數//的時間間隔，取0則只執行一次。
System.Threading.Timer ti = new System.Threading.Timer(new TimerCallback(ReceiveMsg), acceptSock, 0, 0);
myTimer.Enabled = true;
}
private void ReceiveMsg(object obj)
{
Socket acceptSock = (Socket)obj;
try
{
while (true)
{
byte[] byteArray = new byte[100];
acceptSock.Receive(byteArray);//接收數據
//將字節數組轉成字符串
string strRec = System.Text.Encoding.UTF8.GetString(byteArray);
if (this.rtbReceive.InvokeRequired)
{
this.rtbReceive.Invoke(new EventHandler(this.ChangeRickTextBox), new object[] { strRec, EventArgs.Empty });
}
}
}
catch (Exception ex)
{
acceptSock.Close();
MessageBox.Show("S:Receive Message Error" + ex.Message);
}
}
private void ChangeRickTextBox(object obj, EventArgs e)
{
string s = System.Convert.ToString(obj);
this.rtbReceive.AppendText(s + Environment.NewLine);
}
private void btSend_Click(object sender, EventArgs e)
{
Socket sc = null;
byte[] byteSend = System.Text.Encoding.UTF8.GetBytes(this.tbSend.Text.ToCharArray());
try
{
//同時存在若干個客戶端連接時，在textBox1中輸入要發送的是哪個連接
int index = int.Parse(this.textBox1.Text.Trim());
sc = (Socket)alSock[index - 1];
//發送數據
sc.Send(byteSend);
}
catch (Exception ex)
{
if (sc != null)
{
sc.Close();
}
MessageBox.Show("S:Send Message Error" + ex.Message);
}
}
private void btClose_Click(object sender, EventArgs e)
{
try
{
Application.Exit();
}
catch (Exception ex)
{
MessageBox.Show("S:Close Socket Error" + ex.Message);
}
}
}
}
二、Client端
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;
using System.Threading;
namespace KG_Socket_Client
{
public partial class FrmClient : Form
{
private IPAddress serverIP = IPAddress.Parse("127.0.0.1");
private IPEndPoint serverFullAddr;
private Socket sock;
public FrmClient()
{
InitializeComponent();
}
private void btConnect_Click(object sender, EventArgs e)
{
try
{
serverFullAddr = new IPEndPoint(serverIP, 1000);
sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream,ProtocolType.Tcp);
sock.Connect(serverFullAddr);//建立與遠程主機的連接
//啓動新線程用於接收數據
Thread t = new Thread(new ThreadStart(ReceiveMsg));
t.Name = "Receive Message";
//一個線程或者是後臺線程或者是前臺線程。後臺線程與前臺線程類似，區別是後臺線//程不會防止進程終止。一旦屬於某一進程的所有前臺線程都終止，公共語言運行庫就//會通過對任何仍然處於活動狀態的後臺線程調用 Abort 來結束該進程。
t.IsBackground = true;
t.Start();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void ReceiveMsg()
{
try
{
while (true)
{
byte[] byteRec = new byte[100];
this.sock.Receive(byteRec);
string strRec = System.Text.Encoding.UTF8.GetString(byteRec);
if (this.rtbReceive.InvokeRequired)
{
this.rtbReceive.Invoke(new EventHandler(ChangeRtb), new object[] { strRec, EventArgs.Empty });
}
}
}
catch (Exception ex)
{
MessageBox.Show("Receive Message Error" + ex.Message);
}
}
private void ChangeRtb(object obj, EventArgs e)
{
string s = System.Convert.ToString(obj);
this.rtbReceive.AppendText(s + Environment.NewLine);
}
private void btSend_Click(object sender, EventArgs e)
{
byte[] byteSend =
System.Text.Encoding.UTF8.GetBytes(this.tbSend.Text.ToCharArray());
try
{
this.sock.Send(byteSend);
}
catch
{
MessageBox.Show("Send Message Error");
}
}
private void btClose_Click(object sender, EventArgs e)
{
try
{
this.sock.Shutdown(SocketShutdown.Receive);
this.sock.Close();
Application.Exit();
}
catch
{
MessageBox.Show("Exit Error");
}
}
}
}