Scott Mitchell b3dba317d7 HTTP/2 to support asynchronous SETTINGS ACK (#9069) ... Motivation: The HTTP/2 codec will synchronously respond to a SETTINGS frame with a SETTINGS ACK before the application sees the SETTINGS frame. The application may need to adjust its state depending upon what is in the SETTINGS frame before applying the remote settings and responding with an ACK (e.g. to adjust for max concurrent streams). In order to accomplish this the HTTP/2 codec should allow for the application to opt-in to sending the SETTINGS ACK. Modifications: - DefaultHttp2ConnectionDecoder should support a mode where SETTINGS frames can be queued instead of immediately applying and ACKing. - DefaultHttp2ConnectionEncoder should attempt to poll from the queue (if it exists) to apply the earliest received but not yet ACKed SETTINGS frame. - AbstractHttp2ConnectionHandlerBuilder (and sub classes) should support a new option to enable the application to opt-in to managing SETTINGS ACK. Result: HTTP/2 allows for asynchronous SETTINGS ACK managed by the application.		2019-04-25 15:52:05 -07:00
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http2	HTTP/2 to support asynchronous SETTINGS ACK (#9069)	2019-04-25 15:52:05 -07:00