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curl_easy_perform(3) libcurl Manual curl_easy_perform(3)
curl_easy_perform - Perform a file transfer
CURLcode curl_easy_perform(CURL *handle);
This function is called after the init and all the curl_easy_setopt() calls are made, and
will perform the transfer as described in the options. It must be called with the same
handle as input as the curl_easy_init call returned.
libcurl version 7.7 or later (for older versions see below): You can do any amount of
calls to curl_easy_perform() while using the same 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 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 handle.
Let the function return first before invoking it another time. If you want parallel trans-
fers, you must use several curl handles.
Before libcurl version 7.7: You are only allowed to call this function once using the same
handle. If you want to do repeated calls, you must call curl_easy_cleanup and
curl_easy_init again first.
0 means everything was ok, non-zero means an error occurred as <curl/curl.h> defines. If
the CURLOPT_ERRORBUFFER was set with curl_easy_setopt there will be a readable error mes-
sage in the error buffer when non-zero is returned.
Surely there are some, you tell me!
libcurl 7.7 5 Mar 2001 curl_easy_perform(3)
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