CURLOPT_TCP_KEEPINTVL(3)

1CURLOPT_TCP_KEEPINTVL(3)   curl_easy_setopt options   CURLOPT_TCP_KEEPINTVL(3)
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NAME

6       CURLOPT_TCP_KEEPINTVL - set TCP keep-alive interval
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SYNOPSIS

9       #include <curl/curl.h>
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11       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TCP_KEEPINTVL, long in‐
12       terval);
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DESCRIPTION

15       Pass a long. Sets the interval, in seconds, that the  operating  system
16       will  wait  between sending keepalive probes. Not all operating systems
17       support this option. (Added in 7.25.0)
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DEFAULT

20       60
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PROTOCOLS

23       All
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EXAMPLE

26       CURL *curl = curl_easy_init();
27       if(curl) {
28         curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
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30         /* enable TCP keep-alive for this transfer */
31         curl_easy_setopt(curl, CURLOPT_TCP_KEEPALIVE, 1L);
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33         /* set keep-alive idle time to 120 seconds */
34         curl_easy_setopt(curl, CURLOPT_TCP_KEEPIDLE, 120L);
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36         /* interval time between keep-alive probes: 60 seconds */
37         curl_easy_setopt(curl, CURLOPT_TCP_KEEPINTVL, 60L);
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39         curl_easy_perform(curl);
40       }
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AVAILABILITY

43       Always
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RETURN VALUE

46       Returns CURLE_OK if the option is supported,  and  CURLE_UNKNOWN_OPTION
47       if not.
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