class PacketFu::TcpOption

TcpOption is the base class for all TCP options. Note that TcpOption#len returns the size of the entire option, while TcpOption#optlen is the struct for the TCP Option Length field.

Subclassed options should set the correct TcpOption#kind by redefining initialize. They should also deal with various value types there by setting them explicitly with an accompanying StructFu#typecast for the setter.

By default, values are presumed to be strings, unless they are Numeric, in which case a guess is made to the width of the Numeric based on the given optlen.

Note that normally, optlen is /not/ enforced for directly setting values, so the user is perfectly capable of setting incorrect lengths.