我有一个托管 HTTP 服务器的 android 设备并且是 NATed(在路由器后面)。我想从未经过 NAT 的公共服务器访问它。我在一个线程中的 8080 端口在 android 设备上运行一个 HTTP 服务器,一段时间后,我启动一个客户端线程,它试图从 android 上的本地端口号 8080 连接到远程公共服务器。由于某种原因,我在端口 8080 上启动服务器后,android 客户端将无法连接。它也不会产生任何异常。这是我的代码:
Thread server = new Thread(new Runnable() {
public void run() {
super.run();
try {
ServerSocket serverSocket = new ServerSocket();
serverSocket.setReuseAddress(true);
serverSocket.bind(new InetSocketAddress("192.168.1.102", 8080));
while(isRunning){
try {
System.out.println("Listening for new connection");
Socket socket = serverSocket.accept();
System.out.println("incoming connection accepted");
new Thread(new ConnectionHandler(socket)).start();
} catch (IOException e) {
e.printStackTrace();
}
}
serverSocket.close();
}
catch (IOException e) {
e.printStackTrace();
}
}
});
server.start();
// sleep several seconds before launch of client
Thread.currentThread().sleep(5 * 1000);
Thread client = new Thread(new Runnable() {
public void run() {
super.run();
try {
/* .. */
Inet4Address localaddr = (Inet4Address) InetAddress
.getByName("192.168.1.102");
// Inet4Address remoteaddr = (Inet4Address)
// InetAddress.getByName("122.176.73.10");
System.out.println("connecting to 122.176.73.10");
Socket socket = new Socket();
socket.setReuseAddress(true);
System.out.println("[Client]socket.isBound():" + socket.isBound());
socket.bind(new InetSocketAddress("192.168.1.102", 8080));
for (int i = 1; i < 5; i++) {
try {
socket.connect(new InetSocketAddress("122.176.73.10", 4040));
System.out.println("connected to 122.176.73.10");
break;
} catch (Exception e) {
System.out.println("[Client]fail to connect ");
Thread.currentThread().sleep(i * 2 * 1000);
}
}
}
}
});
client.start();