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Re: Rate limit regressions in libcurl 8.18.0 vs 8.17.0
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From: Daniel Stenberg via curl-library <curl-library_at_lists.haxx.se>
Date: Sat, 3 Jan 2026 23:35:40 +0100 (CET)
On Wed, 31 Dec 2025, Dmitry Karpov via curl-library wrote:
> As I discussed it with Stefan before, the rate limit mechanism should apply
> some small delay at the end of a throttled transfer to maintain the
> specified rate limit for the transfer.
I don't think libcurl should do that. Once the transfer is complete, I think
it should return/say so.
> And even though it will not save the bandwidth as all the data has been
> already transferred, it will provide proper network speed measurements for
> the decision making logic (i.e. bitrate selection mechanism in video
> streaming apps) and will help to decrease server load in back-to-back
> multi-transfer scenarios.
If your app thinks it needs to add that extra wait, it is really easy for you
to add a sleep there though.
Date: Sat, 3 Jan 2026 23:35:40 +0100 (CET)
On Wed, 31 Dec 2025, Dmitry Karpov via curl-library wrote:
> As I discussed it with Stefan before, the rate limit mechanism should apply
> some small delay at the end of a throttled transfer to maintain the
> specified rate limit for the transfer.
I don't think libcurl should do that. Once the transfer is complete, I think
it should return/say so.
> And even though it will not save the bandwidth as all the data has been
> already transferred, it will provide proper network speed measurements for
> the decision making logic (i.e. bitrate selection mechanism in video
> streaming apps) and will help to decrease server load in back-to-back
> multi-transfer scenarios.
If your app thinks it needs to add that extra wait, it is really easy for you
to add a sleep there though.
-- / daniel.haxx.se || https://rock-solid.curl.dev -- Unsubscribe: https://lists.haxx.se/mailman/listinfo/curl-library Etiquette: https://curl.se/mail/etiquette.htmlReceived on 2026-01-03