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CURLMOPT_SOCKETFUNCTION.md: expand on the easy argument

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Since recent changes makes it more likely to be an internal handle that
shows up and some users have been surprised by this.

Ref: #14792
Closes #14795
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Daniel Stenberg 2024-09-05 16:17:50 +02:00
parent 5c14d696fe
commit 56f90637ad
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docs/libcurl/opts/CURLMOPT_SOCKETFUNCTION.md
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@ -50,6 +50,9 @@ libcurl by calling curl_multi_socket_action(3).
# CALLBACK ARGUMENTS
*easy* identifies the specific transfer for which this update is related.
Since this callback manages a whole multi handle, an application should not
make assumptions about which particular handle that is passed here. It might
even be an internal easy handle that the application did not add itself.
*s* is the specific socket this function invocation concerns. If the
**what** argument is not CURL_POLL_REMOVE then it holds information about