CURLOPT_TCP_KEEPALIVE man page on DragonFly

CURLOPT_TCP_KEEPALIVE man page on DragonFly

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CURLOPT_TCP_KEEPALIVE(3)   curl_easy_setopt options   CURLOPT_TCP_KEEPALIVE(3)

NAME
       CURLOPT_TCP_KEEPALIVE - enable TCP keep-alive probing

SYNOPSIS
       #include <curl/curl.h>

       CURLcode	 curl_easy_setopt(CURL	*handle,  CURLOPT_TCP_KEEPALIVE,  long
       probe);

DESCRIPTION
       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  CUR‐
       LOPT_TCP_KEEPIDLE(3) and CURLOPT_TCP_KEEPINTVL(3) options, provided the
       operating  system supports them. Set to 0 (default behavior) to disable
       keepalive probes

DEFAULT
       0

PROTOCOLS
       All

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

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

	 /* 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
       Added in 7.25.0

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

SEE ALSO
       CURLOPT_TCP_KEEPIDLE(3), CURLOPT_TCP_KEEPINTVL(3),

libcurl 7.37.0			  19 Jun 2014	      CURLOPT_TCP_KEEPALIVE(3)

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