Friday, January 29, 2016
packet trickery
Refactored my libusipp packet framework's receiving
functions (sending will be optimized later) to:
o Reflect new libpcap API, in particular things
changed about selectable fd's and immediate mode.
It works best if you just pull & build libpcap,
as most distros and OSX may have outdated libpcaps
installed (you will notice by missing symbols)
o refactoring sniffpack() functions to not longer rely
on dynamically allocated memory but using fix buffers
and offsets to handle incoming packets (much) faster.
The new[]/delete[] memory allocation was a hangover from
the 90's when I initially didn't build it with QUANTUM in mind.
o Implementing RX classes for string and fd receiving (tuntap
support)
o Adding support to allow sniffing from file:// devices
to debug via wireshark packet captures later on.
o support QoS data on wifi links
Some things in libpcap still suck, for instance the timeout
function doesn't accept stuct timeval and cannot be called once
a capture handle has been activated. This forces me to
keep my own timeout functionality which is sub-optimal.
As usual, be warned about API changes in libusi++: I add/change
whatever I feel is needed there. API stability is not my
main goal.
Happy QUANTUM your IoT! :p
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