C# Socket TCP发送图片与接收图片

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运行结果：

发送端代码：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;using System.IO;
using System.Net.Sockets;
using System.Net;namespace tcp
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
} private void Form1_Load(object sender, EventArgs e)
{
//textBox1.Text = "101.91.224.228";
textBox1.Text = "192.168.1.100";
textBox2.Text = "8008";
}
FileStream fs = new FileStream(@"1.jpg", FileMode.Open);
private void SendImage(IPAddress remoteIP,int Port)
{
//实例化socket
Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
IPEndPoint ipep = new IPEndPoint(remoteIP, Port);
socket.Connect(ipep);
long contentLength = fs.Length;
//第一次发送数据包的大小
socket.Send(BitConverter.GetBytes(contentLength));
while (true) {
//每次发送128字节
byte[] bits = new byte[128];
int r = fs.Read(bits, 0, bits.Length);
if (r <= 0) break;
socket.Send(bits, r, SocketFlags.None);
}
socket.Close();
fs.Position = 0;
} private void button1_Click(object sender, EventArgs e)
{
SendImage(IPAddress.Parse(textBox1.Text), int.Parse(textBox2.Text));
MessageBox.Show("发送成功");
}
}
}

接收端代码：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;namespace recTCP
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
} private void Form1_Load(object sender, EventArgs e)
{ //RecviveImage();
textBox1.Text = "8008";
} private void RecviveImage(int port)
{
new Thread(delegate () {
Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
IPEndPoint ipep = new IPEndPoint(IPAddress.Any, port);
socket.Bind(ipep);
socket.Listen(2);
while (true)
{
try
{
byte[] data = new byte[8];
Socket clientSocket = socket.Accept();
if (clientSocket.Connected)
{
clientSocket.Receive(data, data.Length, SocketFlags.None);
long contentLength = BitConverter.ToInt64(data, 0);
int size = 0;
MemoryStream ms = new MemoryStream();
while (size < contentLength)
{
byte[] bits = new byte[128];
int r = clientSocket.Receive(bits, bits.Length, SocketFlags.None);
if (r <= 0) break;
ms.Write(bits, 0, r);
size += r;
}
Image img = Image.FromStream(ms);
this.Invoke((EventHandler)delegate
{
pictureBox1.Image = img; //更新在窗体控件上
});
clientSocket.Close();
ms.Flush();
ms.Close();
ms.Dispose();
}
}
catch { }
}
})
{ IsBackground = true}.Start();
} private void button1_Click(object sender, EventArgs e)
{
RecviveImage(int.Parse(textBox1.Text)); }
}
}