symmetric NAT 如何穿越

[zhou25tao]

请问p2p如何穿透symmetric NAT，现在有没有更好的解决方案，当然不是使用代理服务器，还有其他的nat穿透方法，如果那位大哥有源代码的话，共享一份给我吧，我的油箱是[e-mail]

[xiaoyisnail]

up
学习

[waizqfor]

HTTP Tunnel 的例子

// You need to connect to mail.yahoo.com on port 25
  // Through a proxy on 192.0.1.1, on HTTP Proxy 4480
  // CSocketClient is Socket wrapping class
  // When you apply operator << on CString, it writes CString
  // To Socket ending with CRLF
  // When you apply operator >> on CString, it receives
  // a Line of response from socket until CRLF


  try
  {
    CString Request,Response;
    CSocketClient Client;

    Client.ConnectTo("192.0.1.1",4480);

    // Issue CONNECT Command
    Request = "CONNECT mail.yahoo.com:25 HTTP/1.0";
    Client<<Request;

    // Issue empty line
    Request = "";
    Client<<Request;

    // Receive Response From Server
    Client>>Response;

    // Ignore HTTP Version

    int n = Response.Find(' ');
    Response = Response.Mid(n+1);

    // Http Response Must be 200 only
    if(Response.Left(3)!="200")
    {
      // Connection refused from HTTP Proxy Server
      AfxMessageBox(Response);
    }


    // Read Response Lines until you receive an empty line.
    do
    {
      Client>>Response;
      if (Response.IsEmpty())
        break;
    }while (true);


    // Coooooooool.... Now connected to mail.yahoo.com:25
    // Do further SMTP Protocol here..

  }
  catch (CSocketException * pE)
  {
    pE->ReportError();
  }

[星羽]

看看这个贴子 http://topic.csdn.net/t/20050105/12/3700611.html

[星羽]

P2P之UDP穿透NAT的原理与实现(附源代码)
http://www.ppcn.net/n1306c2.aspx

[帅得不敢出门]

up

[zhou25tao]

还是不要去想了.用超级节点的方式解决吧.在整个internet里面发展一些性能比较好的终端作为超级节点.

[pathuang68]

向牛人致敬，想大侠学习！

[romandion]

关注，理论上应该不好处理。