You'll notice
Useful2 Signal1
Streaming stops reading immediately when a connection closes instead of chewing through leftover events.
What's wrong with this entry?
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What
The server-sent-events reader now checks whether the connection is closing or already closed, cancels the reader and leaves the loop instead of continuing to consume events. The same check runs inside per-event processing and in the connection-error handler.
Evidence
isClosingOrClosed
Strings lifted out of the shipped bundle, so the claim above can be checked against them.