我有2个android设备,一个充当处于共享模式的服务器,并且接受连接到一个端口。 其他设备充当连接到服务器热点的客户端,并通过端口建立与服务器的连接。 (一切都是在没有路由器的情况下完成的)。Android连接到网络连接插座
服务器代码看起来是这样的:(当机器人服务器执行的代码,该装置处于束缚模式)
ServerSocket server = new ServerSocket(PORT);
while (true) {
Socket client;
client = server.accept();
ClientThread com = new ClientThread(client, this);
Thread t = new Thread(com);
t.start();
}
客户端代码看起来是这样的:(当机器人客户机执行此代码,将设备连接到接入点)
Socket client = new Socket();
int serverIP = wifiManager.getDhcpInfo().serverAddress;
String stringIP = android.text.format.Formatter.formatIpAddress(serverIP);
InetAddress address = InetAddress.getByName(stringIP);
SocketAddress socketAddress = new InetSocketAddress(address, PORT);
client.connect(socketAddress);
我在客户端上出现以下错误
java.net.ConnectException: failed to connect to /192.168.43.1 (port 12345): connect failed: ENETUNREACH (Network is unreachable)
at libcore.io.IoBridge.connect(IoBridge.java:114)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:192)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:459)
at java.net.Socket.connect(Socket.java:842)
at java.net.Socket.connect(Socket.java:785)
at com.alternatewifimeshmessaging.HostManager.clientConnect(HostManager.java:283)
at com.alternatewifimeshmessaging.HostManager.client(HostManager.java:189)
at com.alternatewifimeshmessaging.HostManager.run(HostManager.java:59)
at java.lang.Thread.run(Thread.java:856)
Caused by: libcore.io.ErrnoException: connect failed: ENETUNREACH (Network is unreachable)
at libcore.io.Posix.connect(Native Method)
at libcore.io.BlockGuardOs.connect(BlockGuardOs.java:85)
at libcore.io.IoBridge.connectErrno(IoBridge.java:127)
at libcore.io.IoBridge.connect(IoBridge.java:112)
... 8 more
服务器不提供任何错误。
我有以下权限的Android清单文件中设置:
<uses-permission android:name="android.permission.INTERNET" >
</uses-permission>
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" >
</uses-permission>
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" >
</uses-permission>
理想情况下,我需要从服务器传输一些数据到客户端。
我在做什么错?
我该怎么做? –