不同网络的两台机器之间的 WinSock 连接出错 C
我制作了一个服务器/客户端程序，当我在同一网络或同一台机器上建立连接时，一切正常。然而，这是我的问题：当我断开客户端计算机与本地网络的连接并将其连接到另一个网络（wifi）时，它不会连接到服务器。
这是我的服务器的一部分：
ZeroMemory(&hints, sizeof(hints));
hints.ai_family = AF_INET;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
hints.ai_flags = AI_PASSIVE;
res = getaddrinfo(NULL, PORT, &hints, &result);
客户端：
ZeroMemory(&hints, sizeof(hints));
hints.ai_family = AF_INET;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
res = getaddrinfo(SERVER_HOST, PORT, &hints, &result);
我的客户端代码中的目标端口与我的服务器中的端口相同。我在某处读到我必须购买唯一的 IP 地址？所以我的问题是：如何使用 C (WinSock) 中的套接字连接不同网络上的两台计算机？
I made a server/client program, everything works fine when I make a connection on the same network or on the same machine. This is however my problem: when I disconnect the client machine from the local network and connect it to another network(wifi) it doesn't connect to the server.
This is a part of my server:
ZeroMemory(&hints, sizeof(hints));
hints.ai_family = AF_INET;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
hints.ai_flags = AI_PASSIVE;
res = getaddrinfo(NULL, PORT, &hints, &result);
Client:
ZeroMemory(&hints, sizeof(hints));
hints.ai_family = AF_INET;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
res = getaddrinfo(SERVER_HOST, PORT, &hints, &result);
The destination port in my client code is the same port as the one in my server. I read somewhere that I have to buy a unique IP address? So my question is: How can I connect two computers on different networks using sockets in C (WinSock)?
如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论
评论（1）
好吧，我发现我的路由器需要端口转发。刚刚联系了我的网络提供商，因为我无法选择制定新的“端口转发规则”。我在路由器配置中制定了一条新规则。我将我的私有（内部）IP 地址和我在服务器/客户端程序中使用的端口号放入新规则中。 这是一个很好的资源。
Okay, I figured out that I need port forwarding on my router. Just contacted my network provider because I didn't had the option to make a new 'port forward rule'. I made a new rule in my router configuration. I put my private (internal) ip address into the new rule with a port number that I use in my server/client program. This is a nice resource.