@Test
public void testSendDatagramWithoutCallback() throws Exception {
// Single datagram sending
Pipe readPipe = Pipe.open();
Pipe writePipe = Pipe.open();
GatheringByteChannel gatheringByteChannel = writePipe.sink();
ScatteringByteChannel scatteringByteChannel = readPipe.source();
SelectionKeyRegistrationReference registrationReference =
(SelectionKeyRegistrationReference)
_selectorIntraband.registerChannel(writePipe.source(), readPipe.sink());
Thread wakeUpThread = new Thread(new WakeUpRunnable(_selectorIntraband));
wakeUpThread.start();
Selector selector = _selectorIntraband.selector;
synchronized (selector) {
wakeUpThread.interrupt();
wakeUpThread.join();
Datagram requestDatagram = Datagram.createRequestDatagram(_type, _data);
_selectorIntraband.sendDatagram(registrationReference, requestDatagram);
SelectionKey writeSelectionKey = registrationReference.writeSelectionKey;
ChannelContext channelContext = (ChannelContext) writeSelectionKey.attachment();
Queue<Datagram> sendingQueue = channelContext.getSendingQueue();
Assert.assertEquals(1, sendingQueue.size());
Assert.assertSame(requestDatagram, sendingQueue.peek());
}
Datagram receiveDatagram = IntrabandTestUtil.readDatagramFully(scatteringByteChannel);
Assert.assertEquals(_type, receiveDatagram.getType());
ByteBuffer dataByteBuffer = receiveDatagram.getDataByteBuffer();
Assert.assertArrayEquals(_data, dataByteBuffer.array());
// Two datagrams continuous sending
Datagram requestDatagram1 = Datagram.createRequestDatagram(_type, _data);
Datagram requestDatagram2 = Datagram.createRequestDatagram(_type, _data);
wakeUpThread = new Thread(new WakeUpRunnable(_selectorIntraband));
wakeUpThread.start();
synchronized (selector) {
wakeUpThread.interrupt();
wakeUpThread.join();
_selectorIntraband.sendDatagram(registrationReference, requestDatagram1);
_selectorIntraband.sendDatagram(registrationReference, requestDatagram2);
SelectionKey writeSelectionKey = registrationReference.writeSelectionKey;
ChannelContext channelContext = (ChannelContext) writeSelectionKey.attachment();
Queue<Datagram> sendingQueue = channelContext.getSendingQueue();
Assert.assertEquals(2, sendingQueue.size());
Datagram[] datagrams = sendingQueue.toArray(new Datagram[2]);
Assert.assertSame(requestDatagram1, datagrams[0]);
Assert.assertSame(requestDatagram2, datagrams[1]);
}
Datagram receiveDatagram1 = IntrabandTestUtil.readDatagramFully(scatteringByteChannel);
Assert.assertEquals(_type, receiveDatagram1.getType());
dataByteBuffer = receiveDatagram1.getDataByteBuffer();
Assert.assertArrayEquals(_data, dataByteBuffer.array());
Datagram receiveDatagram2 = IntrabandTestUtil.readDatagramFully(scatteringByteChannel);
Assert.assertEquals(_type, receiveDatagram2.getType());
dataByteBuffer = receiveDatagram2.getDataByteBuffer();
Assert.assertArrayEquals(_data, dataByteBuffer.array());
// Two datagrams delay sending
requestDatagram1 = Datagram.createRequestDatagram(_type, _data);
requestDatagram2 = Datagram.createRequestDatagram(_type, _data);
wakeUpThread = new Thread(new WakeUpRunnable(_selectorIntraband));
wakeUpThread.start();
SelectionKey writeSelectionKey = registrationReference.writeSelectionKey;
ChannelContext channelContext = (ChannelContext) writeSelectionKey.attachment();
Queue<Datagram> sendingQueue = channelContext.getSendingQueue();
synchronized (writeSelectionKey) {
synchronized (selector) {
wakeUpThread.interrupt();
wakeUpThread.join();
_selectorIntraband.sendDatagram(registrationReference, requestDatagram1);
Assert.assertEquals(1, sendingQueue.size());
Assert.assertSame(requestDatagram1, sendingQueue.peek());
}
receiveDatagram1 = IntrabandTestUtil.readDatagramFully(scatteringByteChannel);
Assert.assertEquals(_type, receiveDatagram1.getType());
dataByteBuffer = receiveDatagram1.getDataByteBuffer();
Assert.assertArrayEquals(_data, dataByteBuffer.array());
Thread pollingThread = _selectorIntraband.pollingThread;
while (pollingThread.getState() == Thread.State.RUNNABLE) ;
_selectorIntraband.sendDatagram(registrationReference, requestDatagram2);
Assert.assertEquals(1, sendingQueue.size());
Assert.assertSame(requestDatagram2, sendingQueue.peek());
}
receiveDatagram2 = IntrabandTestUtil.readDatagramFully(scatteringByteChannel);
Assert.assertEquals(_type, receiveDatagram2.getType());
dataByteBuffer = receiveDatagram2.getDataByteBuffer();
Assert.assertArrayEquals(_data, dataByteBuffer.array());
// Huge datagram sending
int hugeBufferSize = 1024 * 1024 * 10;
ByteBuffer hugeBuffer = ByteBuffer.allocate(hugeBufferSize);
for (int i = 0; i < hugeBufferSize; i++) {
hugeBuffer.put(i, (byte) i);
}
_selectorIntraband.sendDatagram(
registrationReference, Datagram.createRequestDatagram(_type, hugeBuffer));
receiveDatagram = DatagramHelper.createReceiveDatagram();
channelContext = (ChannelContext) writeSelectionKey.attachment();
int count = 0;
while (!DatagramHelper.readFrom(receiveDatagram, scatteringByteChannel)) {
count++;
}
Assert.assertTrue(count > 0);
sendingQueue = channelContext.getSendingQueue();
Assert.assertTrue(sendingQueue.isEmpty());
dataByteBuffer = receiveDatagram.getDataByteBuffer();
Assert.assertArrayEquals(hugeBuffer.array(), dataByteBuffer.array());
unregisterChannels(registrationReference);
gatheringByteChannel.close();
scatteringByteChannel.close();
}
