On Wed, 17 Jan 2018, Ruurd Beerstra via curl-library wrote:

> We have a reasonable workaround (separate sessions) but any insights or
> solutions would be much appreciated.

Thank you! It certainly looks and sounds like a bug, although I can't really
understand how this happens based only on the symptoms. I will have to dig
deeper into this.

I posted your issue in the bug tracker to make sure we don't forget it:
https://github.com/curl/curl/issues/2255

-- 
  / daniel.haxx.se
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