Usually, all message candidates are speculatively corrected as if
they were DF11/17/18, even if the DF field has a different value. This
allows correction of messages when there is correctable damage to the
DF field.
However, running every message candidate through a couple of CRC checks
is expensive, CPU-wise, when decoding messages off the air, as there are
a large number of message candidates that are actually just junk data, and
computing CRCs for all of those adds up. The --no-fix-df option allows
disabling this sort of correction. The tradeoff is that messages with
damage to the DF field will not be corrected.
* Create a network service and connection faup's stdin. Create a Modes.faup_rate_multiplier attribute and set from faup command input
* Use faup_rate_multiplier to adjust the minAge for emitting messages
* Convert upload_rate_multiplier to a double and adjust minAge with it
* Cleanup
* Var name change
* MODES_NOTUSED define for unused modes client object
* Sanity check on faup multiplier field
Make --net-verbatim just control the default setting.
0x1A '1' 'v' disables verbatim mode (send "cooked" output);
0x1A '1' 'V' enables verbatim mode
Support clients with different settings by switching them between output
writers depending on what setting they want, so clients with different
settings can co-exist (unlike the Mode A/C setting)
In cooked mode, FEC corrections are applied to messages before they are send
and only trustworthy messages are forwarded; this is the default case for
downstream clients that don't want to apply their own rules and are happy with
the decisions that dump1090 makes.
In verbatim mode, all messages are forwarded, but no FEC corrections are applied;
the downstream client needs to make its own FEC / noise filtering decisions.
Usually the default for new connections is cooked mode. --net-verbatim changes the
default to be verbatim mode.
This is a from-scratch reimplementation that should be functionally
equivalent to the Flightaware version that was based on dump1090_mr
and had its fingers deep in the network code. This version should be
a little less invasive / fragile..
Oliver Jowett
Eric Tran
Oliver Jowett
Rosen Penev
ertyu
David Stipp