Re: transactions stall after March 6 commit to improve wakeup and wait code in multi

On Tue, 9 Jun 2026, Bryan Henderson via curl-library wrote:

>    In old code, and for the past twenty years, this finds the file
>    descriptor either already ready to read or ready very soon after.  After
>    that, my code calls curl_multi_perform to advance the HTTP transaction.
>
>    But after the subject commit, the file descriptor never becomes ready to
>    read.  My code eventually times out as a failsafe and calls
>    curl_multi_perform anyway, and the transaction does in fact advance.
>    After that, the pselect/curl_multi_perform loop properly completes the
>    transaction.
>
> Is this a bug, or is the algorithm above not supposed to work?

This sounds like it could be a possible bug.

Any chance you can for example modify an existing example source code to 
reproduce this behavior? Then we would have a good reproducer to work with!

-- 

  / daniel.haxx.se || https://rock-solid.curl.dev
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