Several years ago a change was made to block user callbacks from calling
back into the API when not supported (recursive calls). One of the calls
blocked was curl_multi_assign. Recently the blocking was extended to the
multi interface API, however curl_multi_assign may need to be called
from within those user callbacks (eg CURLMOPT_SOCKETFUNCTION).
I can't think of any callback where it would be unsafe to call
curl_multi_assign so I removed the restriction entirely.
Reported-by: Michael Wallner
Ref: https://github.com/curl/curl/commit/b46cfbc
Ref: https://github.com/curl/curl/commit/340bb19
Fixes https://github.com/curl/curl/issues/8480
Closes https://github.com/curl/curl/pull/8483
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subdirectories, using several different formats. Some of them are not ideal
for reading directly in your browser.
If you would rather see the rendered version of the documentation, check out the
curl website's documentation section for
general curl stuff or the libcurl section for
libcurl related documentation.
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