On 1/28/2020 1:17 PM, Pawel Veselov via curl-library wrote:
I have a simple prologue code in my program to select SSL backend. It
works on relatively
recent versions (e.g. 7.65), but specifically on 7.58 ("latest" for
Ubuntu 18),
curl_global_sslset() returns CURLSSLSET_TOO_LATE.
I thought somebody else may be calling init function, but I can see
from the source code
that it simply returns TOO_LATE if there are no multiple SSL backends,
and if ID
doesn't match the ID of the backend that was actually compiled in.
Could you please save me some investigative time and let me know in
which version
was this changed so that calling this with without IDs returns list of
available backends even
in case of single backend?
sslset also returns too late if it has been called after global init.
How are you calling it, with name or id? There was an issue when id was
set to -1 that was fixed [1] a year ago. Also there was an improvement
in 7.60 to return the backends even if too late [2]. The change is
documented you could test for it like this:
if(rc != CURLSSLSET_OK) {
curl_version_info_data *verinfo = curl_version_info(CURLVERSION_NOW);
if(verinfo->version_num >= CURL_VERSION_BITS(7,60,0)) {
/* backend list available even if CURLSSLSET_TOO_LATE */
}
}
[1]: https://github.com/curl/curl/commit/2456152
[2]: https://github.com/curl/curl/commit/d0394de
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