Is Netty supported on android?

[Johnny Luong]

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On 11/15/2010 05:50 PM, cobe24 wrote:
> Hi,
> 
> I'm trying to use Netty to write a server app on android, but the port
> binding always fails.
> The Internet permission has been turned on in AndroidManifest.xml like:
> 
>     <uses-permission android:name="android.permission.INTERNET" />
> 
> 
> The code is like below:
> 
> 		int portNum = 25336;
> 		if(arguments.containsKey("port")) {
> 			String portString = arguments.getString("port");
> 			portNum = Integer.parseInt(portString);
> 		}
> 		
> 		bootstrap = new ServerBootstrap(new NioServerSocketChannelFactory(
> 				Executors.newCachedThreadPool(), Executors
> 				.newCachedThreadPool()));
> 		
> 		bootstrap.setOption("keepAlive", true);
> 		bootstrap.setOption("child.tcpNoDelay", true);
>         bootstrap.setOption("child.keepAlive", true);
>         bootstrap.setOption("child.reuseAddress", true);
>         bootstrap.setOption("child.connectTimeoutMillis", 100);
>         bootstrap.setOption("readWriteFair", true);
>         				
> 		// channel group is used for closing connection properly
> 		channelGroup = new DefaultChannelGroup();
> 		
> 		// Configure the pipeline factory.
> 		ServerPipelineFactory pipelineFactory = new ServerPipelineFactory();
> 		pipelineFactory.setInstrumentation(this);
> 		bootstrap.setPipelineFactory(pipelineFactory);
> 		Log.d(TAG, "Configured server pipline factory");
> 		
> 		// NOTE: This is a work around to prevent the bad address error.
> 		// This was a bug exposed on Android 2.2
> 		// http://code.google.com/p/android/issues/detail?id=9431
> 		System.setProperty("java.net.preferIPv6Addresses", "false");
> 		
> 		// Bind and start to accept incoming connections.
> 		Channel channel = null;
> 		try{
> 			//byte ip[] = new byte[] { 10, 0, 2, 15};
> 			//InetAddress address1 = InetAddress.getByAddress(ip);
> 			
>                         channel = bootstrap.bind(new
> InetSocketAddress(InetAddress.getLocalHost(), portNum));
> 		}
> 		catch(ChannelException e){
> 			Log.e(TAG, "ChannelException "+e.getMessage()+"at port: "+portNum);
> 		}
> 
> .
> If I run the above code on a real android device, it always throws an
> exception "Failed to open a server socket".
> Fearing that this port 25336 could already be used by another app on the
> device, I've also tried other ports bigger than 1024, but the problem is
> still there.
> I tried the code above on both HTC Dream and Motorola Milestone, but no
> luck.
> 
> If anyone could provide me some suggestion, that would be really great.
> Thanks very much. 

Hmmm, last I heard it worked well on Android.  Are you able to bind the
endpoint without the Netty abstraction using a ServerSocket?

Best,
Johnny

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