etlegacy-libs/curl/docs/libcurl/opts/CURLOPT_RESUME_FROM_LARGE.html
2016-09-16 06:35:46 +02:00

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<p class="level0"><a name="NAME"></a><h2 class="nroffsh">NAME</h2>
<p class="level0">CURLOPT_RESUME_FROM_LARGE - set a point to resume transfer from <a name="SYNOPSIS"></a><h2 class="nroffsh">SYNOPSIS</h2>
<p class="level0"><pre class="level0">
&#35;include &lt;curl/curl.h&gt;
&nbsp;
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_RESUME_FROM_LARGE,
&nbsp; curl_off_t from);
</pre>
<a name="DESCRIPTION"></a><h2 class="nroffsh">DESCRIPTION</h2>
<p class="level0">Pass a curl_off_t as parameter. It contains the offset in number of bytes that you want the transfer to start from. Set this option to 0 to make the transfer start from the beginning (effectively disabling resume). For FTP, set this option to -1 to make the transfer start from the end of the target file (useful to continue an interrupted upload).
<p class="level0">When doing uploads with FTP, the resume position is where in the local/source file libcurl should try to resume the upload from and it will then append the source file to the remote target file. <a name="DEFAULT"></a><h2 class="nroffsh">DEFAULT</h2>
<p class="level0">0, not used <a name="PROTOCOLS"></a><h2 class="nroffsh">PROTOCOLS</h2>
<p class="level0">HTTP, FTP, SFTP, FILE <a name="EXAMPLE"></a><h2 class="nroffsh">EXAMPLE</h2>
<p class="level0"><pre class="level0">
CURL *curl = curl_easy_init();
if(curl) {
&nbsp; curl_off_t resume_position = GET_IT_SOMEHOW;
&nbsp; curl_off_t file_size = GET_IT_SOMEHOW_AS_WELL;
&nbsp;
&nbsp; curl_easy_setopt(curl, CURLOPT_URL, "ftp://example.com");
&nbsp;
&nbsp; /* resuming upload at this position, possibly beyond 2GB */
&nbsp; curl_easy_setopt(curl, CURLOPT_RESUME_FROM_LARGE, resume_position);
&nbsp;
&nbsp; /* ask for upload */
&nbsp; curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
&nbsp;
&nbsp; /* set total data amount to expect */
&nbsp; curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE, file_size);
&nbsp;
&nbsp; /* Perform the request */
&nbsp; curl_easy_perform(curl);
}
</pre>
<p class="level0"><a name="AVAILABILITY"></a><h2 class="nroffsh">AVAILABILITY</h2>
<p class="level0">Added in 7.11.0 <a name="RETURN"></a><h2 class="nroffsh">RETURN VALUE</h2>
<p class="level0">Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not. <a name="SEE"></a><h2 class="nroffsh">SEE ALSO</h2>
<p class="level0"><a Class="manpage" href="./CURLOPT_RESUME_FROM.html">CURLOPT_RESUME_FROM</a>, <a Class="manpage" href="./CURLOPT_RANGE.html">CURLOPT_RANGE</a>, <a Class="manpage" href="./CURLOPT_INFILESIZE_LARGE.html">CURLOPT_INFILESIZE_LARGE</a><p class="roffit">
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