Question

我已经在Objective C中使用以下套接字设置在我的Mac上编写了一个服务器应用程序 -

addr4.sin_len = sizeof(addr4);
addr4.sin_family = AF_INET;
addr4.sin_port = htons(6832); 
addr4.sin_addr.s_addr = htonl(INADDR_ANY);
if (kCFSocketSuccess != CFSocketSetAddress(_ipv4socket, (__bridge CFDataRef) [NSData dataWithBytes:&addr4 length:sizeof(addr4)])) {
    [self stop];
    return NO;
}

其IP = ABC.DEF.64.188和子网掩码= 255.255.255.0

我的客户端使用以下套接字设置进入C＃ -

IPHostEntry ipHostInfo = Dns.Resolve("ABC.DEF.64.188");
IPAddress ipAddress = ipHostInfo.AddressList[0];
IPEndPoint remoteEP = new IPEndPoint(ipAddress, port);

// Create a TCP/IP socket.
 client = new Socket(AddressFamily.InterNetwork,
    SocketType.Stream, ProtocolType.Tcp);

Windows机器的IP地址= ABC.DEF.205.118（找到使用什么是我的IP？）。我猜Windows机器是在NAT后面，具有以下设置 -

Wireless LAN adapter Wireless Network Connection:

   Connection-specific DNS Suffix  . : stonybrook.edu
   Link-local IPv6 Address . . . . . : fe80::cd7d:846d:564a:3fa5%12
   IPv4 Address. . . . . . . . . . . : 172.24.17.97
   Subnet Mask . . . . . . . . . . . : 255.255.240.0
   Default Gateway . . . . . . . . . : 172.24.16.1

我在客户端收到以下错误，服务器永远不会看到新的传入连接 -

System.Net.Sockets.SocketException (0x80004005): A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 130.245.64.188:6832    at System.Net.Sockets.Socket.EndConnect(IAsyncResult asyncResult)

两台计算机上都禁用了防火墙。当两台机器都在同一个子网上时，它可以正常工作。

如何使此连接有效？

如何使不同子网上的2台计算机通过套接字进行通信？

0 个答案: