To decide whether we should use the compatibility mode or the normal
mode with a peer, we use the handshake messages as a signaling channel.
If we receive the expected ECN bits, it most likely means they're
running a compatible version.
Signed-off-by: Florent Daigniere <nextgens@freenetproject.org>
Like many, I am using WiFi a lot and often on congested networks.
Without this, Wireguard strips the DSCP bits, preventing WME from
kicking in and improving the audio/video experience.
Yes, it's technically an information leak. Who cares? It's not like if
traffic analysis based on packet sizes or timings wasn't a thing.
This is the first patch of the serie, more work has to happen on ECN
Signed-off-by: Florent Daigniere <nextgens@freenetproject.org>
1. Removed remaining signals from peer struct
2. Made needAnotherKeepalive local
3. Removed environment check from warning text (annoying when debugging)
Flushing queues on exit is sort of a partial solution, but this could be
better. Really what we want is for no more packets to be enqueued after
isUp is set to false.
A premature waitgroup .Done resulted in reading from closed channel.
This caused a nil-pointer deref & crash.
Added additional debugging when closing routines.
