C#使用Socket实现发送和接收图片的方法

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。