With this commit, the entire Zeek test suite passes using spicy TLS.
Tests that either use a SSLv2 handshake, or DTLS are skipped, as the
parser currently does not support either.
Similarly, tests that rely on behavior we cannot replicate (baseline,
hooks, exact error messages) are passed. Other than that, all the
TLS-based tests pass with 100% the exact same baseline results.
This necessitated a couple of small tweaks to the spicy file - the
testcases uncovered several small problems.
This commit also enables cirrus tests for Spicy SSL/TLS.
This commit adds support for the connection_id extension, adds a trace
that uses DTLS 1.3 connection IDs, and adds parsing for the DTLS 1.3
unified header, in case connection IDs are not used.
In case connection IDs are used, parsing of the DTLS 1.3 unified header
is skipped. This is due to the fact, that the header then contains a
variable length element, with the length of the element not given in the
header. Instead, the length is given in the client/server hello message
of the opposite side of the connection (which we might have missed).
Furthermore, parsing is not of a high importance, since we are not
passing the connection ID, or any of the other parsed values of the
unified header into scriptland.
DTLSv1.3 changes the DTLS record format, introducing a completely new
header - which is a first for DTLS.
We don't currently completely parse this header, as this requires a bit
more statekeeping. This will be added in a future revision. This also
also has little practical implications.
