Is curl_easy_perform() synchronous or asynchronous?

Question

I am using curl to send POST and GET requests and I use callback functions to get the replies from these requests. These callbac

Answer 1

Does curl_easy_perform() block until the entire request is send AND the reply is processed by the callback function

Yes, that is exactly what it does.

(If you rather want a non-blocking behavior, libcurl's multi interface is the way to go.)