stream: always reset awaitDrain when emitting data by addaleax · Pull Request #18516 · nodejs/node

PR-URL: #18516
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Minwoo Jung <minwoo@nodesource.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

The complicated `awaitDrain` machinery can be made a bit
slimmer, and more correct, by just resetting the value
each time `stream.emit('data')` is called.

By resetting the value before emitting the data chunk, and
seeing whether any pipe destinations return `.write() === false`,
we always end up in a consistent state and don’t need to worry
about odd situations (like `dest.write(chunk)` emitting more data).

PR-URL: nodejs#18516
Fixes: nodejs#18484
Fixes: nodejs#18512
Refs: nodejs#18515
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Minwoo Jung <minwoo@nodesource.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

The complicated `awaitDrain` machinery can be made a bit
slimmer, and more correct, by just resetting the value
each time `stream.emit('data')` is called.

By resetting the value before emitting the data chunk, and
seeing whether any pipe destinations return `.write() === false`,
we always end up in a consistent state and don’t need to worry
about odd situations (like `dest.write(chunk)` emitting more data).

PR-URL: nodejs#18516
Fixes: nodejs#18484
Fixes: nodejs#18512
Refs: nodejs#18515
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Minwoo Jung <minwoo@nodesource.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

PR-URL: nodejs#18516
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Minwoo Jung <minwoo@nodesource.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>