Title: How can I use org.apache.harmony.luni.platform.OSNewtorkSystem
in Android SDK ?
I'm working with Android SDK 1.5. And I'm programming a application
running on Android Emulator.
This application used a library for communication using TCP/IP.
In debug mode, when create a instance of
org.apache.harmony.nio.internal.PipeImpl class a message that is
"Permission denied (maybe missing INTERNET permission)" is thrown.
----------------------------------------------------------------
public PipeImpl() throws IOException {
super();
try {
sink = new SinkChannelImpl(SelectorProvider.provider
()); <<------------ Here !!!!!
source = new SourceChannelImpl(SelectorProvider.provider
());
sink.finishConnect();
source.accept();
source.closeServer();
} catch(IOException ioe){
reset();
throw ioe;
} catch(RuntimeException e){
reset();
throw e;
}
}
----------------------------------------------------------------
As a result, source that is a field of
org.apache.harmony.nio.interjal.SelectorImpl and which type is
Pipe.SourceChannel is null. Because in a constructor of SelectotrImpl,
Pipe returns null and null is set to source.
----------------------------------------------------------------
public SelectorImpl(SelectorProvider selectorProvider) {
super(selectorProvider);
try {
Pipe mockSelector = selectorProvider.openPipe();
sink = mockSelector.sink();
source = mockSelector.source();
<<--------------------------------- Here !!!!!!!!!!!!!
sourcefd = ((FileDescriptorHandler)source).getFD();
source.configureBlocking(false);
} catch (IOException e) {
// do nothing
}
}
----------------------------------------------------------------
Finally, in SelectorImpl.prepareChannels(), NullPointerException is
thrown.
----------------------------------------------------------------
private void prepareChannels() {
readableFDs.add(sourcefd);
List<SelectionKey> readChannelList = new
ArrayList<SelectionKey>();
readChannelList.add(source.keyFor(this));
<<-------------------------------- Here !!!!!!!!!!
List<SelectionKey> writeChannelList = new
ArrayList<SelectionKey>();
synchronized (keysLock) {
for (Iterator<SelectionKey> i = keys.iterator(); i.hasNext
();) {
SelectionKeyImpl key = (SelectionKeyImpl) i.next();
key.oldInterestOps = key.interestOps();
boolean isReadableChannel = ((SelectionKey.OP_ACCEPT |
SelectionKey.OP_READ) & key.oldInterestOps) != 0;
boolean isWritableChannel = ((SelectionKey.OP_CONNECT
| SelectionKey.OP_WRITE) & key.oldInterestOps) != 0;
SelectableChannel channel = key.channel
();
if (isReadableChannel) {
readChannelList.add(channel.keyFor(this));
readableFDs.add(((FileDescriptorHandler)
channel).getFD());
}
if (isWritableChannel) {
writeChannelList.add(channel.keyFor(this));
writableFDs.add(((FileDescriptorHandler)
channel).getFD());
}
}
}
readableChannels = readChannelList.toArray(new SelectionKey
[0]);
writableChannels = writeChannelList.toArray(new SelectionKey
[0]);
readable = readableFDs.toArray(new FileDescriptor[0]);
writable = writableFDs.toArray(new FileDescriptor[0]);
}
----------------------------------------------------------------
Please, Help me!!!!
I really really thank you for your advance!!!!
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