curl_easy_perform(3) libcurl Manual curl_easy_perform(3)NAMEcurl_easy_perform - Perform a file transfer
SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_perform(CURL *easy_handle);
DESCRIPTION
Invoke this function after curl_easy_init(3) and all the
curl_easy_setopt(3) calls are made, and will perform the transfer as
described in the options. It must be called with the same easy_handle
as input as the curl_easy_init(3) call returned.
curl_easy_perform(3) performs the entire request in a blocking manner
and returns when done, or if it failed. For non-blocking behavior, see
curl_multi_perform(3).
You can do any amount of calls to curl_easy_perform(3) while using the
same easy_handle. If you intend to transfer more than one file, you are
even encouraged to do so. libcurl will then attempt to re-use the same
connection for the following transfers, thus making the operations
faster, less CPU intense and using less network resources. Just note
that you will have to use curl_easy_setopt(3) between the invokes to
set options for the following curl_easy_perform.
You must never call this function simultaneously from two places using
the same easy_handle. Let the function return first before invoking it
another time. If you want parallel transfers, you must use several curl
easy_handles.
While the easy_handle is added to a multi handle, it cannot be used by
curl_easy_perform(3).
RETURN VALUE
CURLE_OK (0) means everything was ok, non-zero means an error occurred
as <curl/curl.h> defines - see libcurl-errors(3). If the CURLOPT_ERRORā
BUFFER was set with curl_easy_setopt(3) there will be a readable error
message in the error buffer when non-zero is returned.
SEE ALSOcurl_easy_init(3), curl_easy_setopt(3), curl_multi_add_handle(3),
curl_multi_perform(3), libcurl-errors(3),
libcurl 7.7 5 Mar 2001 curl_easy_perform(3)