On Fri, Aug 02, 2024 at 06:10:38PM +0000, Jeff Mears via curl-library wrote: > In a program using curl_multi_socket_action in a select/poll loop, what is > curl_multi_perform supposed to be used for? I’ve been simply not calling it, > and things seem to work, but doing this seems incorrect somehow.
The multi interface provides two different ways of running the transfer loop: curl_multi_perform and curl_multi_socket_action. The application only needs to call one of them for libcurl to do its thing. Which one is the best to call depends on the architecture of the application. curl_multi_perform is easier to use and is typically used with select or poll while curl_multi_socket_action is often used in an event-based application (based around something like libevent) and allows higher performance with many open handles. Many other curl_multi_* functions only make sense to call in conjunction with only one of these two. The page https://curl.se/libcurl/c/libcurl-multi.html#MULTISOCKET goes into some more detail on the two approaches. Dan -- Unsubscribe: https://lists.haxx.se/mailman/listinfo/curl-library Etiquette: https://curl.se/mail/etiquette.html
