CURLOPT_TCP_KEEPALIVE(3) curl_easy_setopt options CURLOPT_TCP_KEEPALIVE(3)
NAME
CURLOPT_TCP_KEEPALIVE - 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, "https://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 7.81.0 November 26, 2021 CURLOPT_TCP_KEEPALIVE(3)
Generated by dwww version 1.14 on Thu Jan 23 06:23:33 CET 2025.