currently "option forwardfor" cant't be unset, so there is no way to enable it in the default section and disable it in a particular frontend

Instead of documenting build information in README.md and BUILD-WINDOWS.md, we should create a new .rst document so that it can be hosted along with the other docs on https://lsquic.readthedocs.io

The build chapter should cover:

• Building on Linux
• Building on Windows
• Building using Docker
• Building library only (without example programs, in order not to depend on libevent)
• Building

Bug Report

After updating to the latest test-tls13-obsolete-curves.py there were ~100 failures due to a new check that extensions are rejected due to a mismatch of the curve with the key share. While that's a good test, it is unrelated to the purpose of this test file. As such one updating to the new version that does not want to comply with the newly introduced requirement, would have to dis

The built-in hmac module in python performs the initialisation of the HMAC in pure python code. Implement an abstraction layer that uses m2crypto or pyca/cryptography as the concrete implementation. That should speed up handshaking and CBC ciphers a bit.