Java socket IOException - permission denied

问题:

i am trying to connect to a server on my network running a tcp listener using the following java code. I am getting am IOException - Permission Denied. It is from an android 2.2 emulator.

Does anyone know why?

Socket socket = new Socket("1.1.1.1", 1111);
PrintWriter out = new PrintWriter(socket.getOutputStream(), true);
out.println("test");
socket.close();

回答1:

Yea, like Morrison said above, you probably need to put this permission to your manifest file.

<uses-permission android:name="android.permission.INTERNET" />

回答2:

There may be two reason either you have't put this line of code in android.manifest

   <uses-permission android:name="android.permission.INTERNET" />

or it may be due to the Firewall setting. It may be possible that your eclipse have been blocked by Firewall to communicate through network.