TCP in a native extension

I tried contacting a developer by the name of Wouter Verweirder about my work, based on his native extension, but have been unable to reach him. His native UDPSocket extension can be found here:

https://github.com/wouterverweirder/air-mobile-UDP-extension

I hope someone here can help me about this survey:

I have reasons to write a native extension like hers, but for TCP communication and not UDP.

I am very familiar with the protocols UDP and TCP networking at the packet level, as well as at the level of the source code in several languages. I replaced its UDP components with their counterparts TCP depending on the case, but I get no communication at all.

To start from the square, I did firstly I could build its extension of the source code, then use DONKEY resulting with my Android application for UDP communication as he originally intended.

Then, I simply added the following as a test at the end of its UDPSocketAdapter constructor (in red):

public UDPSocketAdapter(UDPSocketContext context) { }

this . framework = context;

this . hasSentClose = fake;

try {

channel = DatagramChannel. Open ();

channel .configureBlocking (real);

socket = channel . Socket();

{ } catch (SocketException e) { }

{ } catch (IOException e) { }

}

theReceiveQueue = new LinkedBlockingQueue < DatagramPacket > ();

try {}

Tsocket socket = new Socket ("192.168.2.23", 8137);

OutputStream outStream is tsocket. getOutputStream ();

Byte [] = data {'h', 'e', 'l', 'l', 'o', ' w ',' ', 'o', 'r', 'l' ' d ' "};

outStream.write (data);

outStream.flush ();

outStream.close ();

tsocket. Close();

} catch (IOException e1) {}

Newspaper. put ("i/o exception: \r\n" + Log stack2string (e1) + "\r\n");

}

(Of course, I also imported the Socket and OutputStream classes.) After I have reconstitute the DONKEY and then recompile and run my application, not only I do not see my test TCP traffic in my sniffer, but all of its features UDP that worked before, is now broken and I have zero UDP communication!

The line of code in my catch block send anything to my file of log (via my logging class), so I don't know my test code generates an exception. (And in fact, my test code works fine in another entirely native Android app.)

I just have something fundamental missed? I appreciate any suggestion that anyone could have.

Thank you.

Finally, I decided that the Socket object must be instantiated in a worker thread, and then successful TCP connections.

For some reason if an attempt is made to instantiate the plug in the main thread, any communication of any kind to the native extension of breaks network.

I have no idea why that would be a problem for TCP, but not UDP, as evidenced by the native extension of UDP work, on which I based my work, which instantiates a DatagramSocket in the main thread without problem.

I suspect it has something to do with the behavior oriented TCP connection and negotiation tripartite server that happens immediately when a Socket object is created. Because the absence of that UDP is the only functional difference between the two cases.

Maybe someone with a deep understanding of native extensions AIR has more specific information.

Tags: Adobe AIR

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