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.

SEE ALSO

       CURLOPT_SHARE(3), curl_easy_ssls_export(3), curl_share_setopt(3)

libcurl                                            2025-03-05                           curl_easy_ssls_import(3)