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23 .TH CURLOPT_TCP_KEEPINTVL 3 "19 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
25 CURLOPT_TCP_KEEPINTVL \- set TCP keep-alive interval
27 #include <curl/curl.h>
29 CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TCP_KEEPINTVL, long interval);
31 Pass a long. Sets the interval, in seconds, that the operating system will
32 wait between sending keepalive probes. Not all operating systems support this
33 option. (Added in 7.25.0)
38 CURL *curl = curl_easy_init();
40 curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
42 /* enable TCP keep-alive for this transfer */
43 curl_easy_setopt(curl, CURLOPT_TCP_KEEPALIVE, 1L);
45 /* keep-alive idle time to 120 seconds */
46 curl_easy_setopt(curl, CURLOPT_TCP_KEEPIDLE, 120L);
48 /* interval time between keep-alive probes: 60 seconds */
49 curl_easy_setopt(curl, CURLOPT_TCP_KEEPINTVL, 60L);
51 curl_easy_perform(curl);
57 Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
59 .BR CURLOPT_TCP_KEEPALIVE "(3), " CURLOPT_TCP_KEEPIDLE "(3), "