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48 <p class="level0"><a name="NAME"></a><h2 class="nroffsh">NAME</h2>
49 <p class="level0">CURLOPT_HEADERDATA - pointer to pass to header callback <a name="SYNOPSIS"></a><h2 class="nroffsh">SYNOPSIS</h2>
50 <p class="level0">#include <curl/curl.h>
51 <p class="level0">CURLcode curl_easy_setopt(CURL *handle, CURLOPT_HEADERDATA, void *pointer); <a name="DESCRIPTION"></a><h2 class="nroffsh">DESCRIPTION</h2>
52 <p class="level0">Pass a <span Class="emphasis">pointer</span> to be used to write the header part of the received data to.
53 <p class="level0">If <a Class="emphasis" href="./CURLOPT_WRITEFUNCTION.html">CURLOPT_WRITEFUNCTION</a> or <a Class="emphasis" href="./CURLOPT_HEADERFUNCTION.html">CURLOPT_HEADERFUNCTION</a> is used, <span Class="emphasis">pointer</span> will be passed in to the respective callback.
54 <p class="level0">If neither of those options are set, <span Class="emphasis">pointer</span> must be a valid FILE * and it will be used by a plain fwrite() to write headers to. <a name="DEFAULT"></a><h2 class="nroffsh">DEFAULT</h2>
55 <p class="level0">NULL <a name="PROTOCOLS"></a><h2 class="nroffsh">PROTOCOLS</h2>
56 <p class="level0">All <a name="EXAMPLE"></a><h2 class="nroffsh">EXAMPLE</h2>
57 <p class="level0">TODO <a name="AVAILABILITY"></a><h2 class="nroffsh">AVAILABILITY</h2>
58 <p class="level0">Always <a name="RETURN"></a><h2 class="nroffsh">RETURN VALUE</h2>
59 <p class="level0">Returns CURLE_OK <a name="SEE"></a><h2 class="nroffsh">SEE ALSO</h2>
60 <p class="level0"><a Class="manpage" href="./CURLOPT_HEADERFUNCTION.html">CURLOPT_HEADERFUNCTION</a>, <a Class="manpage" href="./CURLOPT_WRITEFUNCTION.html">CURLOPT_WRITEFUNCTION</a>, <span Class="manpage"> </span> <p class="roffit">
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