curl_easy_perform(3) [mojave man page]

curl_easy_perform(3)						  libcurl Manual					      curl_easy_perform(3)

NAME

       curl_easy_perform - perform a blocking 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  opera-
       tions  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 CUR-
       LOPT_ERRORBUFFER(3) was set with curl_easy_setopt(3) there will be a readable error message in the error buffer when non-zero is returned.

EXAMPLE

       CURL *curl = curl_easy_init();
       if(curl) {
	 CURLcode res;
	 curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
	 res = curl_easy_perform(curl);
	 curl_easy_cleanup(curl);
       }

SEE ALSO

       curl_easy_init(3), curl_easy_setopt(3), curl_multi_add_handle(3), curl_multi_perform(3), libcurl-errors(3),

libcurl 7.54.0							   May 02, 2016 					      curl_easy_perform(3)

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curl_easy_cleanup(3)						  libcurl Manual					      curl_easy_cleanup(3)

NAME

       curl_easy_cleanup - End a libcurl easy handle

SYNOPSIS

       #include <curl/curl.h>

       void curl_easy_cleanup(CURL *handle);

DESCRIPTION

       This  function  must  be  the  last  function to call for an easy session. It is the opposite of the curl_easy_init(3) function and must be
       called with the same handle as input that a curl_easy_init(3) call returned.

       This might close all connections this handle has used and possibly has kept open until now - unless it was attached to a multi handle while
       doing  the  transfers.  Don't  call  this function if you intend to transfer more files, re-using handles is a key to good performance with
       libcurl.

       Occasionally you may get your progress callback or header callback called from within curl_easy_cleanup(3) (if previously set for the  han-
       dle  using  curl_easy_setopt(3)).  Like	if  libcurl decides to shut down the connection and the protocol is of a kind that requires a com-
       mand/response sequence before disconnect. Examples of such protocols are FTP, POP3 and IMAP.

       Any use of the handle after this function has been called and have returned, is illegal. curl_easy_cleanup(3) kills the handle and all mem-
       ory associated with it!

       For  libcurl versions before 7.17,: after you've called this function, you can safely remove all the strings you've previously told libcurl
       to use, as it won't use them anymore now.

RETURN VALUE

       None

EXAMPLE

       CURL *curl = curl_easy_init();
       if(curl) {
	 CURLcode res;
	 curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
	 res = curl_easy_perform(curl);
	 curl_easy_cleanup(curl);
       }

SEE ALSO

       curl_easy_init(3), curl_easy_duphandle(3), curl_easy_reset(3), curl_multi_cleanup(3), curl_multi_remove_handle(3)

libcurl 7.54.0							 February 03, 2016					      curl_easy_cleanup(3)

Linux and UNIX Man Pages

curl_easy_perform(3) [mojave man page]

Check Out this Related Man Page