protected IStream createRemoteStream(int streamId) {
// SPEC: exceeding max concurrent streams is treated as stream error.
while (true) {
int remoteCount = remoteStreamCount.get();
int maxCount = getMaxRemoteStreams();
if (maxCount >= 0 && remoteCount >= maxCount) {
reset(new ResetFrame(streamId, ErrorCode.REFUSED_STREAM_ERROR.code), Callback.NOOP);
return null;
}
if (remoteStreamCount.compareAndSet(remoteCount, remoteCount + 1)) break;
}
IStream stream = newStream(streamId, false);
// SPEC: duplicate stream is treated as connection error.
if (streams.putIfAbsent(streamId, stream) == null) {
updateLastStreamId(streamId);
stream.setIdleTimeout(getStreamIdleTimeout());
flowControl.onStreamCreated(stream);
if (LOG.isDebugEnabled()) LOG.debug("Created remote {}", stream);
return stream;
} else {
close(ErrorCode.PROTOCOL_ERROR.code, "duplicate_stream", Callback.NOOP);
return null;
}
}
protected IStream createLocalStream(int streamId, Promise<Stream> promise) {
while (true) {
int localCount = localStreamCount.get();
int maxCount = getMaxLocalStreams();
if (maxCount >= 0 && localCount >= maxCount) {
promise.failed(
new IllegalStateException("Max local stream count " + maxCount + " exceeded"));
return null;
}
if (localStreamCount.compareAndSet(localCount, localCount + 1)) break;
}
IStream stream = newStream(streamId, true);
if (streams.putIfAbsent(streamId, stream) == null) {
stream.setIdleTimeout(getStreamIdleTimeout());
flowControl.onStreamCreated(stream);
if (LOG.isDebugEnabled()) LOG.debug("Created local {}", stream);
return stream;
} else {
promise.failed(new IllegalStateException("Duplicate stream " + streamId));
return null;
}
}
