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https://issues.apache.org/jira/browse/TS-3184?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sudheer Vinukonda resolved TS-3184.
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Resolution: Fixed
> spdy window_update not triggered correctly..
> --------------------------------------------
>
> Key: TS-3184
> URL: https://issues.apache.org/jira/browse/TS-3184
> Project: Traffic Server
> Issue Type: Bug
> Components: SPDY
> Reporter: Sudheer Vinukonda
> Assignee: Sudheer Vinukonda
>
> During a session start, spdy advertises the initial window size as the
> configured {{proxy.config.spdy.initial_window_size_in}}. A window_update is
> triggered whenever the current delta_window_size reaches half this advertised
> window size. However, the condition that checks for triggering the window
> update compares the delta_window_size for each stream with the initial window
> size. This fails to trigger a window_update when the delta_window_size for
> each stream individually is not half the initial_window_size, even though,
> the aggregate of the delta_window_size for all the streams is high enough.
> Consequently, the sender stalls upon exhausting the send window size and
> eventually times out waiting for a window update (which never happens, since,
> individually, each stream doesn't hit half the initial window size).
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