io.netty.handler.codec.http2

Interface StreamByteDistributor.StreamState

Enclosing interface:

StreamByteDistributor

public static interface StreamByteDistributor.StreamState

State information for the stream, indicating the number of bytes that are currently streamable. This is provided to the StreamByteDistributor.updateStreamableBytes(StreamState) method.

Method Summary

Modifier and Type	Method and Description
boolean	hasFrame() Indicates whether or not there are frames pending for this stream.
int	pendingBytes() Get the amount of bytes this stream has pending to send.
Http2Stream	stream() Gets the stream this state is associated with.
int	windowSize() The size (in bytes) of the stream's flow control window.

Method Detail

stream

Http2Stream stream()

Gets the stream this state is associated with.

pendingBytes

int pendingBytes()

Get the amount of bytes this stream has pending to send. The actual amount written must not exceed windowSize()!

Returns:

The amount of bytes this stream has pending to send.

See Also:

Http2CodecUtil#streamableBytes(StreamState)

hasFrame

boolean hasFrame()

Indicates whether or not there are frames pending for this stream.

windowSize

int windowSize()

The size (in bytes) of the stream's flow control window. The amount written must not exceed this amount!

A StreamByteDistributor needs to know the stream's window size in order to avoid allocating bytes if the window size is negative. The window size being 0 may also be significant to determine when if an stream has been given a chance to write an empty frame, and also enables optimizations like not writing empty frames in some situations (don't write headers until data can also be written).

Returns:

the size of the stream's flow control window.

See Also:

Http2CodecUtil#streamableBytes(StreamState)