@Override
public void newStream(HeadersFrame frame, Promise<Stream> promise, Stream.Listener listener) {
// Synchronization is necessary to atomically create
// the stream id and enqueue the frame to be sent.
boolean queued;
synchronized (this) {
int streamId = frame.getStreamId();
if (streamId <= 0) {
streamId = streamIds.getAndAdd(2);
PriorityFrame priority = frame.getPriority();
priority =
priority == null
? null
: new PriorityFrame(
streamId,
priority.getParentStreamId(),
priority.getWeight(),
priority.isExclusive());
frame = new HeadersFrame(streamId, frame.getMetaData(), priority, frame.isEndStream());
}
final IStream stream = createLocalStream(streamId, promise);
if (stream == null) return;
stream.setListener(listener);
ControlEntry entry = new ControlEntry(frame, stream, new PromiseCallback<>(promise, stream));
queued = flusher.append(entry);
}
// Iterate outside the synchronized block.
if (queued) flusher.iterate();
}
private void frame(HTTP2Flusher.Entry entry, boolean flush) {
if (LOG.isDebugEnabled()) LOG.debug("{} {}", flush ? "Sending" : "Queueing", entry.frame);
// Ping frames are prepended to process them as soon as possible.
boolean queued =
entry.frame.getType() == FrameType.PING ? flusher.prepend(entry) : flusher.append(entry);
if (queued && flush) {
if (entry.stream != null) entry.stream.notIdle();
flusher.iterate();
}
}
@Override
public void push(
IStream stream, Promise<Stream> promise, PushPromiseFrame frame, Stream.Listener listener) {
// Synchronization is necessary to atomically create
// the stream id and enqueue the frame to be sent.
boolean queued;
synchronized (this) {
int streamId = streamIds.getAndAdd(2);
frame = new PushPromiseFrame(frame.getStreamId(), streamId, frame.getMetaData());
final IStream pushStream = createLocalStream(streamId, promise);
if (pushStream == null) return;
pushStream.setListener(listener);
ControlEntry entry =
new ControlEntry(frame, pushStream, new PromiseCallback<>(promise, pushStream));
queued = flusher.append(entry);
}
// Iterate outside the synchronized block.
if (queued) flusher.iterate();
}
