程式師世界 >> 編程語言 >> .NET網頁編程 >> C# >> C#基礎知識 >> c#winform socket網絡編程，點對點傳輸文件，socket文件傳輸，監

c#winform socket網絡編程，點對點傳輸文件，socket文件傳輸，監

編輯：C#基礎知識

服務器用來接收文件，不停的監聽端口，有發送文件就馬上開始接收文件
服務端代碼：

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.Threading;

using System.Net.Sockets;

using System.IO;

namespace TestSocketServerHSTF

{

public partial class Form1 : Form

{

public Form1()

{

InitializeComponent();

//不顯示出dataGridView1的最後一行空白

dataGridView1.AllowUserToAddRows = false;

}

#region 定義變量

#endregion

#region 進入窗體即啟動服務

private void Form1_Load(object sender, EventArgs e)

{

//開啟接收線程

Thread TempThread = new Thread(new ThreadStart(this.StartReceive));

TempThread.Start();

}

#endregion

#region 功能函數

private void StartReceive()

{

//創建一個網絡端點

IPEndPoint ipep = new IPEndPoint(IPAddress.Any, int.Parse("2005"));

//MessageBox.Show(IPAddress.Any);

//創建一個套接字

Socket server = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

//綁定套接字到端口

server.Bind(ipep);

//開始偵聽(並堵塞該線程)

server.Listen(10);

//確認連接

Socket client = server.Accept();

//獲得客戶端節點對象

IPEndPoint clientep = (IPEndPoint)client.RemoteEndPoint;

//獲得[文件名]

string SendFileName = System.Text.Encoding.Unicode.GetString(TransferFiles.ReceiveVarData(client));

//MessageBox.Show("文件名" + SendFileName);

//獲得[包的大小]

string bagSize = System.Text.Encoding.Unicode.GetString(TransferFiles.ReceiveVarData(client));

//MessageBox.Show("包大小" + bagSize);

//獲得[包的總數量]

int bagCount = int.Parse(System.Text.Encoding.Unicode.GetString(TransferFiles.ReceiveVarData(client)));

//MessageBox.Show("包的總數量" + bagCount);

//獲得[最後一個包的大小]

string bagLast = System.Text.Encoding.Unicode.GetString(TransferFiles.ReceiveVarData(client));

//MessageBox.Show("最後一個包的大小" + bagLast);

//創建一個新文件

FileStream MyFileStream = new FileStream(SendFileName, FileMode.Create, FileAccess.Write);

//已發送包的個數

int SendedCount = 0;

while (true)

{

byte[] data = TransferFiles.ReceiveVarData(client);

if (data.Length == 0)

{

break;

}

else

{

SendedCount++;

//將接收到的數據包寫入到文件流對象

MyFileStream.Write(data, 0, data.Length);

//顯示已發送包的個數

//MessageBox.Show("已發送包個數"+SendedCount.ToString());

}

//關閉文件流

MyFileStream.Close();

//關閉套接字

client.Close();

//填加到dgv裡

//文件大小，IP，已發送包的個數，文件名，包的總量，最後一個包的大小

this.dataGridView1.Rows.Add(bagSize, clientep.Address, SendedCount, SendFileName, bagCount, bagLast);

//MessageBox.Show("文件接收完畢!");

}

#endregion

#region 攔截Windows消息,關閉窗體時執行

protected override void WndProc(ref Message m)

{

const int WM_SYSCOMMAND = 0x0112;

const int SC_CLOSE = 0xF060;

if (m.Msg == WM_SYSCOMMAND && (int)m.WParam == SC_CLOSE)

{//捕捉關閉窗體消息

// User clicked close button

//this.WindowState = FormWindowState.Minimized;//把右上角紅叉關閉按鈕變最小化

ServiceStop();

}

base.WndProc(ref m);

}

#endregion

#region 停止服務

//停止服務

private void ServiceStop()

{

try

{

}

catch { }

try

{

}

catch { }

}

#endregion

}

客戶端用來發送文件，選擇文件後點發送按鈕發送文件
客戶端代碼：

////////////////////////////////////////////////////////////////////////////////
//title: 點對點文件傳輸程序 //
////////////////////////////////////////////////////////////////////////////////
//////////////////////////Begin-發送端//////////////////////////////////
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Threading;
namespace 發送端
{
/// <summary>
/// Form1 的摘要說明。
/// </summary>
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.GroupBox groupBox1;
private System.Windows.Forms.OpenFileDialog openFileDialog1;
private System.Windows.Forms.TextBox textBox1;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.TextBox textBox2;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.TextBox textBox3;
private System.Windows.Forms.GroupBox groupBox2;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.TextBox textBox4;
private System.Windows.Forms.Label label4;
private System.Windows.Forms.TextBox textBox5;
private System.Windows.Forms.GroupBox groupBox3;
private System.Windows.Forms.GroupBox groupBox4;
private System.Windows.Forms.Button button2;
private System.Windows.Forms.Label label5;
private System.Windows.Forms.TextBox textBox6;
private System.Windows.Forms.Label label6;
private System.Windows.Forms.Label label7;
private System.Windows.Forms.ProgressBar progressBar1;
private System.Windows.Forms.TextBox textBox7;
private System.Windows.Forms.Label label8;
private System.Windows.Forms.Label label9;
private System.Windows.Forms.TextBox textBox8;
private System.Windows.Forms.Label label10;
private System.Windows.Forms.TextBox textBox9;
private System.Windows.Forms.Label label11;
private System.Windows.Forms.Label label12;
private System.Windows.Forms.TextBox textBox10;
/// <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 調用後添加任何構造函數代碼
//
}
/// <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 窗體設計器生成的代碼
/// <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.textBox2 = new System.Windows.Forms.TextBox();
this.textBox3 = new System.Windows.Forms.TextBox();
this.label2 = new System.Windows.Forms.Label();
this.label1 = new System.Windows.Forms.Label();
this.button1 = new System.Windows.Forms.Button();
this.textBox1 = new System.Windows.Forms.TextBox();
this.label6 = new System.Windows.Forms.Label();
this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();
this.groupBox2 = new System.Windows.Forms.GroupBox();
this.textBox6 = new System.Windows.Forms.TextBox();
this.textBox5 = new System.Windows.Forms.TextBox();
this.label4 = new System.Windows.Forms.Label();
this.textBox4 = new System.Windows.Forms.TextBox();
this.label3 = new System.Windows.Forms.Label();
this.label5 = new System.Windows.Forms.Label();
this.label9 = new System.Windows.Forms.Label();
this.groupBox3 = new System.Windows.Forms.GroupBox();
this.textBox8 = new System.Windows.Forms.TextBox();
this.textBox9 = new System.Windows.Forms.TextBox();
this.textBox7 = new System.Windows.Forms.TextBox();
this.progressBar1 = new System.Windows.Forms.ProgressBar();
this.label7 = new System.Windows.Forms.Label();
this.label8 = new System.Windows.Forms.Label();
this.label10 = new System.Windows.Forms.Label();
this.label11 = new System.Windows.Forms.Label();
this.label12 = new System.Windows.Forms.Label();
this.textBox10 = new System.Windows.Forms.TextBox();
this.groupBox4 = new System.Windows.Forms.GroupBox();
this.button2 = new System.Windows.Forms.Button();
this.groupBox1.SuspendLayout();
this.groupBox2.SuspendLayout();
this.groupBox3.SuspendLayout();
this.groupBox4.SuspendLayout();
this.SuspendLayout();
//
// groupBox1
//
this.groupBox1.Controls.Add(this.textBox2);
this.groupBox1.Controls.Add(this.textBox3);
this.groupBox1.Controls.Add(this.label2);
this.groupBox1.Controls.Add(this.label1);
this.groupBox1.Controls.Add(this.button1);
this.groupBox1.Controls.Add(this.textBox1);
this.groupBox1.Controls.Add(this.label6);
this.groupBox1.Location = new System.Drawing.Point(0, 0);
this.groupBox1.Name = "groupBox1";
this.groupBox1.Size = new System.Drawing.Size(416, 96);
this.groupBox1.TabIndex = 0;
this.groupBox1.TabStop = false;
this.groupBox1.Text = "文件信息";
//
// textBox2
//
this.textBox2.Location = new System.Drawing.Point(80, 40);
this.textBox2.Name = "textBox2";
this.textBox2.ReadOnly = true;
this.textBox2.Size = new System.Drawing.Size(232, 21);
this.textBox2.TabIndex = 3;
//
// textBox3
//
this.textBox3.Location = new System.Drawing.Point(80, 64);
this.textBox3.Name = "textBox3";
this.textBox3.ReadOnly = true;
this.textBox3.Size = new System.Drawing.Size(136, 21);
this.textBox3.TabIndex = 3;
//
// label2
//
this.label2.Location = new System.Drawing.Point(8, 72);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(100, 16);
this.label2.TabIndex = 4;
this.label2.Text = "文件大小：";
//
// label1
//
this.label1.Location = new System.Drawing.Point(16, 48);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(96, 16);
this.label1.TabIndex = 2;
this.label1.Text = "文件名：";
//
// button1
//
this.button1.Location = new System.Drawing.Point(320, 16);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(88, 23);
this.button1.TabIndex = 1;
this.button1.Text = "浏覽";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// textBox1
//
this.textBox1.Location = new System.Drawing.Point(8, 16);
this.textBox1.Name = "textBox1";
this.textBox1.ReadOnly = true;
this.textBox1.Size = new System.Drawing.Size(304, 21);
this.textBox1.TabIndex = 0;
//
// label6
//
this.label6.Location = new System.Drawing.Point(224, 72);
this.label6.Name = "label6";
this.label6.Size = new System.Drawing.Size(96, 16);
this.label6.TabIndex = 2;
this.label6.Text = "（單位：字節）";
//
// openFileDialog1
//
this.openFileDialog1.Filter = "所有文件|*.*";
//
// groupBox2
//
this.groupBox2.Controls.Add(this.textBox6);
this.groupBox2.Controls.Add(this.textBox5);
this.groupBox2.Controls.Add(this.label4);
this.groupBox2.Controls.Add(this.textBox4);
this.groupBox2.Controls.Add(this.label3);
this.groupBox2.Controls.Add(this.label5);
this.groupBox2.Controls.Add(this.label9);
this.groupBox2.Location = new System.Drawing.Point(0, 96);
this.groupBox2.Name = "groupBox2";
this.groupBox2.Size = new System.Drawing.Size(416, 72);
this.groupBox2.TabIndex = 1;
this.groupBox2.TabStop = false;
this.groupBox2.Text = "系統設置";
//
// textBox6
//
this.textBox6.Location = new System.Drawing.Point(96, 40);
this.textBox6.Name = "textBox6";
this.textBox6.Size = new System.Drawing.Size(72, 21);
this.textBox6.TabIndex = 3;
this.textBox6.Text = "50000";
//
// textBox5
//
this.textBox5.Location = new System.Drawing.Point(320, 16);
this.textBox5.Name = "textBox5";
this.textBox5.Size = new System.Drawing.Size(80, 21);
this.textBox5.TabIndex = 3;
this.textBox5.Text = "2005";
//
// label4
//
this.label4.Location = new System.Drawing.Point(256, 24);
this.label4.Name = "label4";
this.label4.Size = new System.Drawing.Size(100, 16);
this.label4.TabIndex = 2;
this.label4.Text = "傳輸端口：";
//
// textBox4
//
this.textBox4.Location = new System.Drawing.Point(96, 16);
this.textBox4.Name = "textBox4";
this.textBox4.ReadOnly = true;
this.textBox4.Size = new System.Drawing.Size(144, 21);
this.textBox4.TabIndex = 1;
//
// label3
//
this.label3.Location = new System.Drawing.Point(16, 24);
this.label3.Name = "label3";
this.label3.Size = new System.Drawing.Size(100, 16);
this.label3.TabIndex = 0;
this.label3.Text = "本機IP地址：";
//
// label5
//
this.label5.Location = new System.Drawing.Point(24, 48);
this.label5.Name = "label5";
this.label5.Size = new System.Drawing.Size(88, 16);
this.label5.TabIndex = 2;
this.label5.Text = "包的大小：";
//
// label9
//
this.label9.Location = new System.Drawing.Point(176, 48);
this.label9.Name = "label9";
this.label9.Size = new System.Drawing.Size(224, 16);
this.label9.TabIndex = 2;
this.label9.Text = "（范圍：10000 - 60000 單位：字節）";
//
// groupBox3
//
this.groupBox3.Controls.Add(this.textBox8);
this.groupBox3.Controls.Add(this.textBox9);
this.groupBox3.Controls.Add(this.textBox7);
this.groupBox3.Controls.Add(this.progressBar1);
this.groupBox3.Controls.Add(this.label7);
this.groupBox3.Controls.Add(this.label8);
this.groupBox3.Controls.Add(this.label10);
this.groupBox3.Controls.Add(this.label11);
this.groupBox3.Controls.Add(this.label12);
this.groupBox3.Controls.Add(this.textBox10);
this.groupBox3.Location = new System.Drawing.Point(0, 168);
this.groupBox3.Name = "groupBox3";
this.groupBox3.Size = new System.Drawing.Size(416, 168);
this.groupBox3.TabIndex = 2;
this.groupBox3.TabStop = false;
this.groupBox3.Text = "狀態信息";
//
// textBox8
//
this.textBox8.Location = new System.Drawing.Point(120, 40);
this.textBox8.Name = "textBox8";
this.textBox8.ReadOnly = true;
this.textBox8.Size = new System.Drawing.Size(160, 21);
this.textBox8.TabIndex = 1;
//
// textBox9
//
this.textBox9.Location = new System.Drawing.Point(120, 64);
this.textBox9.Name = "textBox9";
this.textBox9.ReadOnly = true;
this.textBox9.Size = new System.Drawing.Size(80, 21);
this.textBox9.TabIndex = 1;
//
// textBox7
//
this.textBox7.Location = new System.Drawing.Point(120, 16);
this.textBox7.Name = "textBox7";
this.textBox7.ReadOnly = true;
this.textBox7.Size = new System.Drawing.Size(160, 21);
this.textBox7.TabIndex = 1;
//
// progressBar1
//
this.progressBar1.Location = new System.Drawing.Point(8, 136);
this.progressBar1.Name = "progressBar1";
this.progressBar1.Size = new System.Drawing.Size(400, 23);
this.progressBar1.Step = 1;
this.progressBar1.TabIndex = 3;
//
// label7
//
this.label7.Location = new System.Drawing.Point(32, 24);
this.label7.Name = "label7";
this.label7.Size = new System.Drawing.Size(96, 16);
this.label7.TabIndex = 2;
this.label7.Text = "接收端IP地址：";
//
// label8
//
this.label8.Location = new System.Drawing.Point(40, 48);
this.label8.Name = "label8";
this.label8.Size = new System.Drawing.Size(80, 16);
this.label8.TabIndex = 2;
this.label8.Text = "包的總數量：";
//
// label10
//
this.label10.Location = new System.Drawing.Point(8, 72);
this.label10.Name = "label10";
this.label10.Size = new System.Drawing.Size(120, 16);
this.label10.TabIndex = 2;
this.label10.Text = "最後一個包的大小：";
//
// label11
//
this.label11.Location = new System.Drawing.Point(200, 72);
this.label11.Name = "label11";
this.label11.Size = new System.Drawing.Size(96, 16);
this.label11.TabIndex = 2;
this.label11.Text = "（單位：字節）";
//
// label12
//
this.label12.Location = new System.Drawing.Point(16, 96);
this.label12.Name = "label12";
this.label12.Size = new System.Drawing.Size(104, 16);
this.label12.TabIndex = 2;
this.label12.Text = "已發送包的數量：";
//
// textBox10
//
this.textBox10.Location = new System.Drawing.Point(120, 88);
this.textBox10.Name = "textBox10";
this.textBox10.ReadOnly = true;
this.textBox10.Size = new System.Drawing.Size(80, 21);
this.textBox10.TabIndex = 1;
//
// groupBox4
//
this.groupBox4.Controls.Add(this.button2);
this.groupBox4.Location = new System.Drawing.Point(0, 336);
this.groupBox4.Name = "groupBox4";
this.groupBox4.Size = new System.Drawing.Size(416, 48);
this.groupBox4.TabIndex = 3;
this.groupBox4.TabStop = false;
this.groupBox4.Text = "系統控制";
//
// button2
//
this.button2.Location = new System.Drawing.Point(16, 16);
this.button2.Name = "button2";
this.button2.Size = new System.Drawing.Size(75, 23);
this.button2.TabIndex = 0;
this.button2.Text = "開始發送";
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClientSize = new System.Drawing.Size(416, 389);
this.Controls.Add(this.groupBox4);
this.Controls.Add(this.groupBox3);
this.Controls.Add(this.groupBox2);
this.Controls.Add(this.groupBox1);
this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
this.MaximizeBox = false;
this.Name = "Form1";
this.Text = "點對點文件傳輸軟體發送端";
this.Load += new System.EventHandler(this.EzoneSend_Load);
this.groupBox1.ResumeLayout(false);
this.groupBox1.PerformLayout();
this.groupBox2.ResumeLayout(false);
this.groupBox2.PerformLayout();
this.groupBox3.ResumeLayout(false);
this.groupBox3.PerformLayout();
this.groupBox4.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());
}
private void button1_Click(object sender, System.EventArgs e)
{
//選擇要進行傳輸的文件
if(this.openFileDialog1.ShowDialog()==DialogResult.OK)
{
FileInfo EzoneFile=new FileInfo(this.openFileDialog1.FileName);
this.textBox1.Text=EzoneFile.FullName;
this.textBox2.Text=EzoneFile.Name;
this.textBox3.Text=EzoneFile.Length.ToString();
}
}
private void StartSend()
{
//創建一個文件對象
FileInfo EzoneFile=new FileInfo(this.textBox1.Text);
//打開文件流
FileStream EzoneStream=EzoneFile.OpenRead();
//包的大小
int PacketSize=int.Parse(this.textBox6.Text);
//包的數量
int PacketCount=(int)(EzoneStream.Length/((long)PacketSize));
this.textBox8.Text=PacketCount.ToString();
this.progressBar1.Maximum=PacketCount;
//最後一個包的大小
int LastDataPacket=(int)(EzoneStream.Length-((long)(PacketSize*PacketCount)));
this.textBox9.Text=LastDataPacket.ToString();
////創建一個網絡端點
//IPEndPoint ipep = new IPEndPoint(IPAddress.Parse("192.168.1.136"), int.Parse(this.textBox5.Text));
////MessageBox.Show(IPAddress.Any);
////創建一個套接字
//Socket client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
//MessageBox.Show(server.ToString());
//指向遠程服務端節點
IPEndPoint ipep = new IPEndPoint(IPAddress.Parse("192.168.1.136"), int.Parse(this.textBox5.Text));
//創建套接字
Socket client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
//連接到發送端
client.Connect(ipep);
////綁定套接字到端口
//client.Bind(ipep);
//MessageBox.Show(ipep.ToString());
////開始偵聽(並堵塞該線程)
//server.Listen(10);
//確認連接
//Socket client = server.Accept();
//MessageBox.Show(client.ToString());
//獲得客戶端節點對象
IPEndPoint clientep=(IPEndPoint)client.RemoteEndPoint;
//獲得客戶端的IP地址
//this.textBox7.Text=clientep.Address.ToString();
//發送[文件名]到客戶端
CommonModule.EzoneModule.SendVarData(client,System.Text.Encoding.Unicode.GetBytes(EzoneFile.Name));
//發送[包的大小]到客戶端
CommonModule.EzoneModule.SendVarData(client,System.Text.Encoding.Unicode.GetBytes(PacketSize.ToString()));
//發送[包的總數量]到客戶端
CommonModule.EzoneModule.SendVarData(client,System.Text.Encoding.Unicode.GetBytes(PacketCount.ToString()));
//發送[最後一個包的大小]到客戶端
CommonModule.EzoneModule.SendVarData(client,System.Text.Encoding.Unicode.GetBytes(LastDataPacket.ToString()));
//數據包
byte[] data=new byte[PacketSize];
//開始循環發送數據包
for(int i=0;i<PacketCount;i++)
{
//從文件流讀取數據並填充數據包
EzoneStream.Read(data,0,data.Length);
//發送數據包
CommonModule.EzoneModule.SendVarData(client,data);
//顯示發送數據包的個數
this.textBox10.Text=((int)(i+1)).ToString();
//進度條值的顯示
this.progressBar1.PerformStep();
}
//如果還有多余的數據包,則應該發送完畢!
if(LastDataPacket!=0)
{
data=new byte[LastDataPacket];
EzoneStream.Read(data,0,data.Length);
CommonModule.EzoneModule.SendVarData(client,data);
this.progressBar1.Value=this.progressBar1.Maximum;
}
//關閉套接字
client.Close();
//server.Close();
//關閉文件流
EzoneStream.Close();
this.button2.Enabled=true;
MessageBox.Show("文件傳輸完畢!");
}
private void button2_Click(object sender, System.EventArgs e)
{
//開啟文件傳輸子線程
Thread TempThread=new Thread(new ThreadStart(this.StartSend));
TempThread.Start();
this.button2.Enabled=false;
}
private void EzoneSend_Load(object sender, System.EventArgs e)
{
//獲得本機的IP地址
this.textBox4.Text=Dns.GetHostByName(Dns.GetHostName()).AddressList[0].ToString();
}
}
}

公共類，服務端客戶端都需要用到

////////////////////////////Begin-公共模塊//////////////////////////////////////

using System;

using System.Collections.Generic;

using System.Text;

using System.Net;

using System.Net.Sockets;

using System.Windows.Forms;

namespace TestSocketServerHSTF

{

class TransferFiles

{

public TransferFiles()

{

// TODO: 在此處添加構造函數邏輯

}

public static int SendData(Socket s, byte[] data)

{

int total = 0;

int size = data.Length;

int dataleft = size;

int sent;

while (total < size)

{

sent = s.Send(data, total, dataleft, SocketFlags.None);

total += sent;

dataleft -= sent;

}

return total;

}

public static byte[] ReceiveData(Socket s, int size)

{

int total = 0;

int dataleft = size;

byte[] data = new byte[size];

int recv;

while (total < size)

{

recv = s.Receive(data, total, dataleft, SocketFlags.None);

if (recv == 0)

{

data = null;

break;

}

total += recv;

dataleft -= recv;

}

return data;

}

public static int SendVarData(Socket s, byte[] data)

{

int total = 0;

int size = data.Length;

int dataleft = size;

int sent;

byte[] datasize = new byte[4];

datasize = BitConverter.GetBytes(size);

sent = s.Send(datasize);

while (total < size)

{

sent = s.Send(data, total, dataleft, SocketFlags.None);

total += sent;

dataleft -= sent;

}

return total;

}

public static byte[] ReceiveVarData(Socket s)

{

int total = 0;

int recv;

byte[] datasize = new byte[4];

recv = s.Receive(datasize, 0, 4, SocketFlags.None);

int size = BitConverter.ToInt32(datasize, 0);

int dataleft = size;

byte[] data = new byte[size];

while (total < size)

{

recv = s.Receive(data, total, dataleft, SocketFlags.None);

if (recv == 0)

{

data = null;

break;

}

total += recv;

dataleft -= recv;

}

return data;

}

/////////////////////////////End-公共模塊///////////////////////////////////////

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