Tls extension: record size limit full implementation #493
Description
We already properly set this in client hello, so we can already ask server to send us smaller packets. What we don't do yet, and still needs to be implemented:
- Actually enforce this when receiving packets.
- When we send this extension to a server a server might reply with a limit of its own. Also respect and apply this limit when sending packets
Important detail: it seems that only firefox/nss is actually using this. Openssl doesn't support this right now so not sure how many server will care for this extension. (openssl/openssl#8187)