我在使用Android時看到了一些關於SocketException的問題,但是他們都沒有覆蓋我在清單中指定的INTERNET權限的BindException。請求INTERNET權限的BindException
這裏是我的清單的一部分:
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission>
<uses-permission android:name="android.permission.READ_OWNER_DATA"></uses-permission>
<uses-permission android:name="android.permission.READ_PHONE_STATE"></uses-permission>
<uses-permission android:name="android.permission.ACCOUNT_MANAGER"></uses-permission>
<uses-permission android:name="android.permission.AUTHENTICATE_ACCOUNTS"></uses-permission>
這裏是我的logcat輸出的相關部分:
04-22 14:49:06.117: DEBUG/MyLibrary(4844): Address to bind: 192.168.1.14 port: 843 04-22 14:49:06.197: WARN/System.err(4844): java.net.BindException: Permission denied (maybe missing INTERNET permission) 04-22 14:49:06.207: WARN/System.err(4844): at org.apache.harmony.luni.platform.OSNetworkSystem.socketBindImpl(Native Method) 04-22 14:49:06.207: WARN/System.err(4844): at org.apache.harmony.luni.platform.OSNetworkSystem.bind(OSNetworkSystem.java:107) 04-22 14:49:06.217: WARN/System.err(4844): at org.apache.harmony.luni.net.PlainSocketImpl.bind(PlainSocketImpl.java:184) 04-22 14:49:06.217: WARN/System.err(4844): at java.net.ServerSocket.bind(ServerSocket.java:414) 04-22 14:49:06.227: WARN/System.err(4844): at org.apache.harmony.nio.internal.ServerSocketChannelImpl$ServerSocketAdapter.bind(ServerSocketChannelImpl.java:213) 04-22 14:49:06.227: WARN/System.err(4844): at java.net.ServerSocket.bind(ServerSocket.java:367) 04-22 14:49:06.237: WARN/System.err(4844): at org.apache.harmony.nio.internal.ServerSocketChannelImpl$ServerSocketAdapter.bind(ServerSocketChannelImpl.java:283) 04-22 14:49:06.237: WARN/System.err(4844): at mylibrary.net.PolicyConnection$PolicyServerWorker.(PolicyConnection.java:201)
我真的希望這是一個簡單的問題,不是由事實複雜化綁定發生在小於1024的端口上的工作線程內。
更新
看起來好像這是一個特權端口問題,任何人都知道如何在Android中綁定到低於1024的端口?
SelectorProvider provider = SelectorProvider.provider();
try {
ServerSocketChannel channel = provider.openServerSocketChannel();
policySocket = channel.socket();
Log.d("MyLibrary", "Address to bind: " + device.getAddress().getAddress() + " port: 843");
InetSocketAddress addr = new InetSocketAddress(InetAddress.getByName(device.getAddress().getAddress()), 843);
policySocket.bind(addr);
policySocket.setReuseAddress(true);
policySocket.setReceiveBufferSize(256);
} catch (Exception e) {
e.printStackTrace();
}
似乎不幸言:( – 2010-04-22 23:13:47
嗯...如何在紮根的環境做到這一點。我們建立我們自己的Android平臺的嵌入式設備。我需要什麼權限才能讓android服務獲得綁定到端口24的權限? – videoguy 2011-10-24 02:43:38
@videoguy:沒有權限,進程必須以root用戶身份運行(或者作爲一個擁有管理員權限的用戶帳戶運行) – CommonsWare 2011-10-24 05:30:04