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curl_easy_perform - Perform a file transfer
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<H2>SYNOPSIS</H2><PRE>
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<B>#include</B> <B><curl/curl.h></B>
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<B>CURLcode</B> <B>curl_easy_perform(CURL</B> <B>*</B><I>handle</I><B>);</B>
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<H2>DESCRIPTION</H2><PRE>
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This function is called after the init and all the
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curl_easy_setopt() calls are made, and will perform the
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transfer as described in the options. It must be called
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with the same <I>handle</I> as input as the curl_easy_init call
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libcurl version 7.7 or later (for older versions see below):
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You can do any amount of calls to curl_easy_perform() while
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using the same handle. If you intend to transfer more than
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one file, you are even encouraged to do so. libcurl will
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then attempt to re-use the same connection for the following
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transfers, thus making the operations faster, less CPU
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intense and using less network resources. Just note that you
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will have to use <I>curl</I><B>_</B><I>easy</I><B>_</B><I>setopt</I> between the invokes to set
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options for the following curl_easy_perform.
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You must never call this function simultaneously from two
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places using the same handle. Let the function return first
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before invoking it another time. If you want parallel trans�
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fers, you must use several curl handles.
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Before libcurl version 7.7: You are only allowed to call
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this function once using the same handle. If you want to do
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repeated calls, you must call curl_easy_cleanup and
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curl_easy_init again first.
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<H2>RETURN VALUE</H2><PRE>
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0 means everything was ok, non-zero means an error occurred
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as <I><curl/curl.h></I> defines. If the CURLOPT_ERRORBUFFER was set
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with <I>curl</I><B>_</B><I>easy</I><B>_</B><I>setopt</I> there will be a readable error message
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in the error buffer when non-zero is returned.
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<H2>SEE ALSO</H2><PRE>
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<B>curl_easy_init(3)</B>, <B>curl_easy_setopt(3)</B>,
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Surely there are some, you tell me!
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