Http2MultiplexerSupport

```
public interface Http2MultiplexerSupport
```
INTERNAL API
Multiplexes the outgoing side of the streams on a HTTP/2 connection. Accepts the streams from the Akka HTTP side and turns them into FrameEvents to be passed to the network side.
The main interface between stream handling and multiplexing is this:
- stream handling can call enqueueOutStream if a stream wants to send a data frame - if there's connection window and the network pulls and there are no control frames to send, the multiplexer state machine calls sendDataFrame here. This calls pullNextFrame to get the next frame and more info about what the state of the stream is afterwards. - stream handling can call closeStream to remove a potentially enqueued stream
Mixed into the Http2ServerDemux graph logic.

Nested Class Summary

Nested Classes
Modifier and Type Interface Description

static interface Http2MultiplexerSupport.StateTimingSupport

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`allowReadingIncomingFrames(boolean allow)`	Allows suspending reading of frames incoming from the network
`Http2Multiplexer`	`createMultiplexer(StreamPrioritizer prioritizer)`
`void`	`distributeWindowDeltaToAllStreams(int delta)`	Called by the multiplexer after SETTINGS_INITIAL_WINDOW_SIZE has changed
`void`	`frameOutFinished()`	Called by the multiplexer before canceling the stage on outlet cancellation
`boolean`	`isServer()`
`void`	`onAllDataFlushed()`
`PullFrameResult`	`pullNextFrame(int streamId, int maxSize)`	Called by the multiplexer when ready to send a data frame
`void`	`pushFrameOut(FrameEvent event)`
`Http2CommonSettings`	`settings()`

- Method Detail
  - allowReadingIncomingFrames
```
void allowReadingIncomingFrames(boolean allow)
```
    Allows suspending reading of frames incoming from the network
  - createMultiplexer
```
Http2Multiplexer createMultiplexer(StreamPrioritizer prioritizer)
```
  - distributeWindowDeltaToAllStreams
```
void distributeWindowDeltaToAllStreams(int delta)
```
    Called by the multiplexer after SETTINGS_INITIAL_WINDOW_SIZE has changed
  - frameOutFinished
```
void frameOutFinished()
```
    Called by the multiplexer before canceling the stage on outlet cancellation
  - isServer
```
boolean isServer()
```
  - onAllDataFlushed
```
void onAllDataFlushed()
```
  - pullNextFrame
```
PullFrameResult pullNextFrame(int streamId,
                              int maxSize)
```
    Called by the multiplexer when ready to send a data frame
  - pushFrameOut
```
void pushFrameOut(FrameEvent event)
```
  - settings
```
Http2CommonSettings settings()
```