在android中打开服务器套接字：权限被拒绝？

Question

I'm trying to create server socket on port 554 (rtsp) in Android and i'm getting BindException with 'denied' message:

        public RequestListener() throws IOException {
            try {
                mRtspServerSocket = new ServerSocket(mPort);
                start();
            } catch (BindException e) {
                Log.e(TAG, "Port bind exception");
                throw e;
            }
        }

Are standard ports (or < 1024) unavailable for binding? Do i have to have root permission on the device for that?

PS. I have <uses-permission android:name="android.permission.INTERNET" /> in AndroidManifest.xml

Answer 1

You can't bind to ports <1024.

Either root your phone, modify the firmware, or don't bind to ports lower than 1024. That's a Linux thing more than an Android thing.