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  1. Traffic Server
  2. TS-3184

SPDY window_update not triggered correctly..

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 5.2.0
    • Component/s: SPDY
    • Labels:
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      Description

      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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            • Assignee:
              sudheerv Sudheer Vinukonda
              Reporter:
              sudheerv Sudheer Vinukonda
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                Updated:
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