CURLOPT_TCP_KEEPINTVL(3)   Library Functions Manual   CURLOPT_TCP_KEEPINTVL(3)

NAME
       CURLOPT_TCP_KEEPINTVL - TCP keep-alive interval

SYNOPSIS
       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TCP_KEEPINTVL, long interval);

DESCRIPTION
       Pass a long. Sets the interval, in seconds, to wait between sending
       keepalive probes. Not all operating systems support this option. (Added
       in 7.25.0)

       The maximum value this accepts is 2147483648. Any larger value is
       capped to this amount.

DEFAULT
       60

PROTOCOLS
       All

EXAMPLE
       int main(void)
       {
         CURL *curl = curl_easy_init();
         if(curl) {
           curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");

           /* enable TCP keep-alive for this transfer */
           curl_easy_setopt(curl, CURLOPT_TCP_KEEPALIVE, 1L);

           /* set keep-alive idle time to 120 seconds */
           curl_easy_setopt(curl, CURLOPT_TCP_KEEPIDLE, 120L);

           /* interval time between keep-alive probes: 60 seconds */
           curl_easy_setopt(curl, CURLOPT_TCP_KEEPINTVL, 60L);

           curl_easy_perform(curl);
         }
       }

AVAILABILITY
       Always

RETURN VALUE
       Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION
       if not.

SEE ALSO
       CURLOPT_TCP_KEEPALIVE(3), CURLOPT_TCP_KEEPIDLE(3)

libcurl                          April 26 2024        CURLOPT_TCP_KEEPINTVL(3)