Use HTTPS URLs instead of HTTP URLs where appropriate #20807
Description
Due to legacy reasons our documentation and code comments contain a lot of HTTP URLs to resources which are nowadays served also under the corresponding HTTPS URL.
It would be nice if we used HTTPS URLs where possible.
The following command can be used to find URL candidates for such cleanup (excluding the many http://www.opensource.org/licenses/mit-license.php links):
$ git grep 'http://' -- ":(exclude)*.vcxproj*" ":(exclude)*.svg" ":(exclude)doc/release-notes/" \
":(exclude)src/leveldb/" ":(exclude)src/secp256k1/" ":(exclude)src/univalue/" ":(exclude)src/crc32c/" \
":(exclude)src/crypto/ctaes/" ":(exclude)src/tinyformat.h" | \
grep -v 'http://www.opensource.org/licenses/mit-license.php'
Each of the URLs returned by the above command would have to be manually checked for HTTPS availability before changing the URL.