* Add parsing of well known IPv6 extension headers
Add classes for IPv6 extension headers defined in the IPv6 protocol
specification (RFC 2460) as well as functions for creating them from
the IPv6 class' ext_header type.
The currently known extension headers are Hop-By-Hop Option,
Destination Routing, Routing and Fragment.
* Cleanup after PR #287 comments
Pull in stuff from the std namespace with "using" instead of
qualifying with std::.
Keep starting braces on the same line.
Avoid potential copy when appending to vector.
* * add or-operator and a simlple unit test for hw_address, ip_address, ipv6_address
* add not-operator and a simlple unit test for hw_address, ip_address, ipv6_address
* add greater-then-operator and a simlple unit test for ipv6_address
* add new constructor and a simlple unit test for network_interface, which use a ipv6_address to find the nic
* add override the function gateway_from_ip for ipv6_address parameter (untested)
* change the ipv6_address in NotMaskAdress_Test, so that the expceted addresses are valid for the winsock api
* Delete CMakeLists.txt.user
* * add <=, >, >= operator for HWAddress with tests
* add <=, >, >= operator for IPv4Address with tests
* add <=,>= operator for IPv6Address with tests
* refactoring the & , |, ~ operator of ipv6_address to "regular" operator
When reading TCP packets with esoteric (or corrupt) values for option types, the asan fsanitize=enum will trigger if the read value is not in range of the enum. The range of a classic (pre-C++11) enum with no negative enumerators is determined by the highest bit set in any of its enumerators, so if `TCP::OptionTypes` has highest enumerator `ALTCHK = 14` it cannot take values above 15.
Define enumerators (per IANA) with bit 7 set to ensure that `TCP::OptionTypes` can take any 8-bit value.
An alternative (C++11 only) would be to give `TCP::OptionTypes` underlying type `uint8_t`.
* fixed compile failure due to macro
* add functional to cxxstd.h to try to fix mac
* clang bug identified, moving functional include to later
* last step, move hash def to header
* avoid allocation on hash
* set ipv6 back to string hash
This was broken by design. Each header held the next header's
type, which made iterating through them very tricky (you'd have
to look at the previous header's next header value to know the
current one while doing so).
Now each header contains its own value and the next header
value is computed during serialization and then reverted back
after that.
* Remove option size memers on IP/TCP and instead calculate
these when they're needed
* Reorder members on IP/TCP so as to remove/decrease padding
* Move most memory helpers impl into header file so they
can be inlined
* Make PDUOption's move ctor/assignment operator noexcept
