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48 <p class="level0"><a name="NAME"></a><h2 class="nroffsh">NAME</h2>
49 <p class="level0">CURLOPT_TCP_KEEPALIVE - enable TCP keep-alive probing <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_TCP_KEEPALIVE, long probe); <a name="DESCRIPTION"></a><h2 class="nroffsh">DESCRIPTION</h2>
52 <p class="level0">Pass a long. If set to 1, TCP keepalive probes will be sent. The delay and frequency of these probes can be controlled by the <a Class="emphasis" href="./CURLOPT_TCP_KEEPIDLE.html">CURLOPT_TCP_KEEPIDLE</a> and <a Class="emphasis" href="./CURLOPT_TCP_KEEPINTVL.html">CURLOPT_TCP_KEEPINTVL</a> options, provided the operating system supports them. Set to 0 (default behavior) to disable keepalive probes <a name="DEFAULT"></a><h2 class="nroffsh">DEFAULT</h2>
53 <p class="level0">0 <a name="PROTOCOLS"></a><h2 class="nroffsh">PROTOCOLS</h2>
54 <p class="level0">All <a name="EXAMPLE"></a><h2 class="nroffsh">EXAMPLE</h2>
55 <p class="level0">TODO <a name="AVAILABILITY"></a><h2 class="nroffsh">AVAILABILITY</h2>
56 <p class="level0">Added in 7.25.0 <a name="RETURN"></a><h2 class="nroffsh">RETURN VALUE</h2>
57 <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>
58 <p class="level0"><a Class="manpage" href="./CURLOPT_TCP_KEEPIDLE.html">CURLOPT_TCP_KEEPIDLE</a>, <a Class="manpage" href="./CURLOPT_TCP_KEEPINTVL.html">CURLOPT_TCP_KEEPINTVL</a>, <span Class="manpage"> </span> <p class="roffit">
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