On Fri, 4 Feb 2022, Mellergård, Daniel via curl-library wrote:
From what I can see the number of connections to use to a single host has
been severely debated in other forums, and typically browsers is much more
restrictive regarding the number of connections. It’s a bit difficult to
find definite numbers, but typically somewhere between 6 and 16.
That's probably because the limit is not entirely fixed in any browser afaik,
but 6 is typically the "long term" limit for desktop browsers at least, that
can be overriden at times for specific (short-term) reasons.
Is “unlimited” really a good default choice and will work safely with most
servers?
If you are doing "browser-like" operations with libcurl, you are probably
better off capping the amount somewhere, yes. I don't think libcurl needs to
set that default for you though. A lot of users use libcurl in non-browser use
cases and for those a sensible limit might be something completely different.
(I /do/ see that in my use case it seems to max out to 64 connections,
limited either by Curl or my use case.)
If you didn't set a limit for curl, it doesn't care and then there's no
ceiling.
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