On Wed, 25 May 2011, Erik Earle wrote:
I'm new to this and I'm looking at the samples, docs and list archives...
Welcome!
I cannot find definitive information on whether 'curl_easy_perform' always returns after all the calls to 'recv_hdr' and 'recv_data' have returned
It does. While curl_easy_perform() runs, it will call the callbacks to deliver data as long as there is data coming. When it reaches the end of the transfer, curl_easy_perform() will return.
if the call backs are multi-threaded.
Oh, it never struck me you would think that. I guess we can or should clarify that in the documentation. libcurl will never start a new thread[*] and it will always call the callbacks from the same thread you're calling curl_easy_perform() from.
Is it the same for the share and multi interfaces as the easy?
Yes, but you'll see that no function in the share interface makes any callbacks trigger.
[*] = libcurl can optionally get built and told to start separate threads for the purpose of name resolving, but that's completely hidden from the user and no callbacks will ever be called from such extra "support-thread(s)".
-- / daniel.haxx.se ------------------------------------------------------------------- List admin: http://cool.haxx.se/list/listinfo/curl-library Etiquette: http://curl.haxx.se/mail/etiquette.html
