upnp、c++和boost asio

Question

我将miniupnpc与我的包装器一起使用。当我的朋友运行我的应用程序时，该应用程序会创建upnp。

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但是，他仍然没有收到来自我的电脑的信息。我做错了什么？

源客户端：

upnp::upnp_wrapper upnp{};
upnp.redirect(upnp::internal_port{ 41052 }, 
              upnp::external_port{ 41052 }, 
              upnp::eProtocol::UDP, "Description");

io_service service;
ip::udp::socket socket{ service };
socket.open(ip::udp::v4());
socket.bind(ip::udp::endpoint{ ip::udp::v4(), 41052 });

ip::udp::endpoint server_ep{ ip::address::from_string("100.71.188.14"s), 9999u };

std::cout << "open: " << socket.local_endpoint().address().to_string() << ':' << socket.local_endpoint().port() << '\n';



cout << "send request\n";
socket.send_to(buffer("open: " + socket.local_endpoint().address().to_string() + ':' + std::to_string(socket.local_endpoint().port()) + '\n'), server_ep);
cout << "request sent\n\n";

array<char, 60> buff = {};
cout << "wait answer\n";
auto answer_length = socket.receive(buffer(buff));
cout << "answer recived: ";
cout.write(buff.data(), answer_length);

cout << "\nsend goodd\n";
socket.send_to(buffer("GOOOOD"s), server_ep);


cout << "\n\nEND";
cin.get();

和服务器测试源：

using namespace std;
using namespace literals;
using namespace boost::asio;

io_service service;
ip::udp::socket socket{ service };
socket.open(ip::udp::v4());
socket.bind(ip::udp::endpoint{ ip::udp::v4(), 9999u });
ip::udp::endpoint client_ep;

array<char, 100> buff = {};
cout << "start recive\n";
auto recived_length = socket.receive_from(buffer(buff), client_ep);
cout << "message recived from: " + client_ep.address().to_string() + ':' + to_string(client_ep.port()) + "\n-> ";
std::cout.write(buff.data(), recived_length);

cout << "\n\nsend answer\n";
socket.send_to(buffer("ANSWER"s), client_ep);
cout << "answer sent\n";

cout << "start good\n";
 recived_length = socket.receive_from(buffer(buff), client_ep);
std::cout.write(buff.data(), recived_length);

cout << "\nEND";
cin.get();

我用upnp和boost asio做错了什么？如何正确使用upnp打开内部和外部端口？

Answer 1

我想是因为防火墙的缘故。也许turn server是解决方案