Hello to all !
I am the maintainer of the sane-escl backend, I have an error on an https access on a canon XK90 scanner.
If you have an idea of why and how to bypass it, I'm interested!

    curl_handle = curl_easy_init();
curl_easy_setopt(curl_handle, CURLOPT_URL, "https://192.168.yyy.xxx:443/eSCL/ScannerCapabilities";);
    curl_easy_setopt(curl_handle, CURLOPT_SSL_VERIFYPEER, 0L);
    curl_easy_setopt(curl_handle, CURLOPT_SSL_VERIFYHOST, 0L);
curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, memory_callback_c);
    curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, (void *)var);
curl_easy_setopt(curl_handle, CURLOPT_HEADERFUNCTION, header_callback);
    curl_easy_setopt(curl_handle, CURLOPT_HEADERDATA, (void *)header);
    curl_easy_setopt(curl_handle, CURLOPT_FOLLOWLOCATION, 1L);
    curl_easy_setopt(curl_handle, CURLOPT_MAXREDIRS, 3L);
    CURLcode res = curl_easy_perform(curl_handle);
    if (res != CURLE_OK) {
printf("respond: %s\n", curl_easy_strerror(res)); // respond: SSL connect error
          exit--1);
    }

I don't have access to the device!

Thanks to all
Thierry
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