Tribblix: manual page: curl_easy_ssls

curl_easy_ssls_import(3) Introduction to Library Functions

NAME

curl_easy_ssls_export - export SSL sessions

SYNOPSIS

#include <curl/curl.h>

CURLcode curl_easy_ssls_import(CURL *handle,
const char *session_key,
const unsigned char *shmac, size_t shmac_len,
const unsigned char *sdata, size_t sdata_len);

DESCRIPTION

This function imports a previously exported SSL session ticket. sdata
and sdata_len must always be provided. If session_key is NULL, then
shmac and shmac_len must be given as received during the export. See
curl_easy_ssls_export(3) for a description of those.

Import of session tickets from other curl versions may fail due to
changes in the handling of shmac or sdata. A session ticket which has
already expired is silently discarded.

PROTOCOLS

This functionality affects all TLS based protocols: HTTPS, FTPS,
IMAPS, POP3S, SMTPS etc.

This option works only with the following TLS backends: BearSSL,
GnuTLS, OpenSSL, mbedTLS and wolfSSL

EXAMPLE

int main(void)
{
CURLSHcode sh;
CURLSH *share = curl_share_init();
CURLcode rc;
CURL *curl;

sh = curl_share_setopt(share, CURLSHOPT_SHARE, CURL_LOCK_DATA_SSL_SESSION);
if(sh)
printf("Error: %s\n", curl_share_strerror(sh));

curl = curl_easy_init();
if(curl) {
unsigned char *shmac, *sdata;
size_t hlen, slen;

curl_easy_setopt(curl, CURLOPT_SHARE, share);

/* read shmac and sdata from storage */
rc = curl_easy_ssls_import(curl, NULL, shmac, hlen, sdata, slen);

/* always cleanup */
curl_easy_cleanup(curl);
}
curl_share_cleanup(share);
}

AVAILABILITY

Added in curl 8.12.0

RETURN VALUE

This function returns a CURLcode indicating success or error.

CURLE_OK (0) means everything was OK, non-zero means an error
occurred, see libcurl-errors(3). If CURLOPT_ERRORBUFFER(3) was set
with curl_easy_setopt(3) there can be an error message stored in the
error buffer when non-zero is returned.