Class Http3ServerPushStreamManager

java.lang.Object

io.netty.handler.codec.http3.Http3ServerPushStreamManager

public final class Http3ServerPushStreamManager
extends Object

A manager for push streams for a server. New push streams can be initiated using the various newPushStream methods. It is required to add the ChannelHandler returned from controlStreamListener() to the QuicChannel associated with this manager.

Constructor Summary

Constructors

Constructor	Description
Http3ServerPushStreamManager(QuicChannel channel)	Creates a new instance.
Http3ServerPushStreamManager(QuicChannel channel, int initialPushStreamsCountHint)	Creates a new instance.

Method Summary

Modifier and Type	Method	Description
ChannelInboundHandler	controlStreamListener()	A ChannelInboundHandler to be added to the QuicChannel associated with this Http3ServerPushStreamManager to listen to control stream frames.
boolean	isPushAllowed()	Returns true if server push is allowed at this point.
Future<QuicStreamChannel>	newPushStream(long pushId, @Nullable ChannelHandler handler)	Returns a new HTTP/3 push-stream that will use the given ChannelHandler to dispatch Http3PushStreamFrames too.
void	newPushStream(long pushId, @Nullable ChannelHandler handler, Promise<QuicStreamChannel> promise)	Returns a new HTTP/3 push-stream that will use the given ChannelHandler to dispatch Http3PushStreamFrames too.
void	newPushStream(long pushId, @Nullable ChannelHandler handler, UnaryOperator<QuicStreamChannelBootstrap> bootstrapConfigurator, Promise<QuicStreamChannel> promise)	Returns a new HTTP/3 push-stream that will use the given ChannelHandler to dispatch Http3PushStreamFrames too.
long	reserveNextPushId()	Reserves a push ID to be used to create a new push stream subsequently.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Http3ServerPushStreamManager

public Http3ServerPushStreamManager(QuicChannel channel)

Creates a new instance.

Parameters:

channel - for which this manager is created.

Http3ServerPushStreamManager

public Http3ServerPushStreamManager(QuicChannel channel,
 int initialPushStreamsCountHint)

Creates a new instance.

Parameters:

channel - for which this manager is created.

initialPushStreamsCountHint - a hint for the number of push streams that may be created.

Method Details

isPushAllowed

public boolean isPushAllowed()

Returns true if server push is allowed at this point.

Returns:

true if server push is allowed at this point.

reserveNextPushId

public long reserveNextPushId()

Reserves a push ID to be used to create a new push stream subsequently. A push ID can only be used to create exactly one push stream.

Returns:

Next push ID.

Throws:

IllegalStateException - If it is not allowed to create any more push streams on the associated QuicChannel. Use isPushAllowed() to check if server push is allowed.

newPushStream

public Future<QuicStreamChannel> newPushStream(long pushId,
 @Nullable
 @Nullable ChannelHandler handler)

Returns a new HTTP/3 push-stream that will use the given ChannelHandler to dispatch Http3PushStreamFrames too. The needed HTTP/3 codecs are automatically added to the pipeline as well.

Parameters:

pushId - for the push stream. This MUST be obtained using reserveNextPushId().

handler - the ChannelHandler to add. Can be null.

Returns:

the Future that will be notified once the push-stream was opened.

newPushStream

public void newPushStream(long pushId,
 @Nullable
 @Nullable ChannelHandler handler,
 Promise<QuicStreamChannel> promise)

Returns a new HTTP/3 push-stream that will use the given ChannelHandler to dispatch Http3PushStreamFrames too. The needed HTTP/3 codecs are automatically added to the pipeline as well.

Parameters:

pushId - for the push stream. This MUST be obtained using reserveNextPushId().

handler - the ChannelHandler to add. Can be null.

promise - to indicate creation of the push stream.

newPushStream

public void newPushStream(long pushId,
 @Nullable
 @Nullable ChannelHandler handler,
 UnaryOperator<QuicStreamChannelBootstrap> bootstrapConfigurator,
 Promise<QuicStreamChannel> promise)

Returns a new HTTP/3 push-stream that will use the given ChannelHandler to dispatch Http3PushStreamFrames too. The needed HTTP/3 codecs are automatically added to the pipeline as well.

Parameters:

pushId - for the push stream. This MUST be obtained using reserveNextPushId().

handler - the ChannelHandler to add. Can be null.

bootstrapConfigurator - UnaryOperator to configure the QuicStreamChannelBootstrap used.

promise - to indicate creation of the push stream.

controlStreamListener

public ChannelInboundHandler controlStreamListener()

A ChannelInboundHandler to be added to the QuicChannel associated with this Http3ServerPushStreamManager to listen to control stream frames.

Returns:

ChannelInboundHandler to be added to the QuicChannel associated with this Http3ServerPushStreamManager to listen to control stream frames.