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CURLOPT_SSL_SESSIONID_CACHE(3) | Library Functions Manual | CURLOPT_SSL_SESSIONID_CACHE(3) |
NAME¶
CURLOPT_SSL_SESSIONID_CACHE - use the SSL session-ID cache
SYNOPSIS¶
#include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSL_SESSIONID_CACHE,
long enabled);
DESCRIPTION¶
Pass a long set to 0 to disable libcurl's use of SSL session-ID caching. Set this to 1 to enable it. By default all transfers are done using the cache enabled. While nothing ever should get hurt by attempting to reuse SSL session-IDs, there seem to be or have been broken SSL implementations in the wild that may require you to disable this in order for you to succeed.
DEFAULT¶
1
PROTOCOLS¶
This functionality affects all TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.
All TLS backends support this option.
EXAMPLE¶
int main(void) {
CURL *curl = curl_easy_init();
if(curl) {
CURLcode res;
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
/* switch off session-id use */
curl_easy_setopt(curl, CURLOPT_SSL_SESSIONID_CACHE, 0L);
res = curl_easy_perform(curl);
curl_easy_cleanup(curl);
} }
AVAILABILITY¶
Added in curl 7.16.0
RETURN VALUE¶
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
SEE ALSO¶
CURLOPT_DNS_CACHE_TIMEOUT(3), CURLOPT_MAXAGE_CONN(3), CURLOPT_MAXLIFETIME_CONN(3), CURLOPT_SSLVERSION(3)
2024-11-13 | libcurl |