C#使用Socket实现发送和接收图片的方法

前端技术 2023/09/06 C#

本文实例讲述了C#使用Socket实现发送和接收图片的方法。分享给大家供大家参考。具体如下：

using System;
using System.Collections.Generic;
using System.Text;
using System.Net.Sockets;
using System.Net;
using System.IO;
namespace ConsoleApplication1
{
  Class Program
  {
    static void Main (String[] args)
    {
      // 1. to create a socket
      Socket sListen = new Socket (AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
      // 2. Fill IP
      IPAddress IP = IPAddress.Parse (\"127.0.0.1\");
      IPEndPoint IPE = new IPEndPoint (IP, 4321);
      // 3. binding
      sListen.Bind (IPE);
      // 4. Monitor
      Console.WriteLine (\"Service is listening ...\");
      sListen.Listen (2);
      // 5. loop to accept client connection requests
      while (true)
      {
        Socket clientSocket;
        try
        {
          clientSocket = sListen.Accept ();
        }
        catch
        {
          throw;
        }
        // send data to the client
        //clientSocket.Send (Encoding.Unicode.GetBytes (\"I am a server, you there?? !!!!\"));
        // send the file
        byte[] buffer = ReadImageFile (\"1.jpg\");
        clientSocket.Send (buffer, buffer.Length, SocketFlags.None);
        Console.WriteLine (\"Send success!\");
      }
    }
    private static byte[] ReadImageFile (String img)
    {
      FileInfo fileinfo = new FileInfo (img);
      byte[] buf = new byte[fileInfo.Length];
      FileStream fs = new FileStream (img, FileMode.Open, FileAccess.Read);
      fs.Read (buf, 0, buf.Length);
      fs.Close ();
      //fileInfo.Delete ();
      GC.ReRegisterForFinalize (fileinfo);
      GC.ReRegisterForFinalize (fs);
      return buf;
    }
  }
}

客户端接收和保存图片的代码如下：

using System;
using System.Collections.Generic;
using System.Text;
using System.Net.Sockets;
using System.Net;
using System.IO;
namespace ConsoleApplication2
{
  Class Program
  {
    static void Main (String[] args)
    {
      // 1. to create a socket
      Socket S = new Socket (AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
      // 2. fill in the remote IP
      IPAddress IP = IPAddress.Parse (\"127.0.0.1\");
      IPEndPoint IPE = new IPEndPoint (IP, 4321);
      Console.WriteLine (\"started connection service ....\");
      // 3. connect to the server
      s.Connect (IPE);
      // 4. receive data
      byte[] buffer = new byte[1000000];
      s.Receive (buffer, buffer.Length, SocketFlags.None);
      //var Msg = Encoding.Unicode.GetString (buffer);
      //Console.WriteLine (\"received message: (0)\", msg);
      Console.WriteLine (\"Receive success\");
      FileStream fs = File.Create (\"1.jpg\");
      fs.Write (buffer, 0, buffer.Length);
      fs.Close ();
      Console.ReadKey ();
    }
  }
}

希望本文所述对大家的C#程序设计有所帮助。

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