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Brad Fitzpatrick 28bf53f502 wgengine/magicsock: reduce disco ping heartbeat aggressiveness a bit ... Bigger changes coming later, but this should improve things a bit in the meantime. Rationale: * 2 minutes -> 45 seconds: 2 minutes was overkill and never considered phones/battery at the time. It was totally arbitrary. 45 seconds is also arbitrary but is less than 2 minutes. * heartbeat from 2 seconds to 3 seconds: in practice this meant two packets per second (2 pings and 2 pongs every 2 seconds) because the other side was also pinging us every 2 seconds on their own. That's just overkill. (see #540 too) So in the worst case before: when we sent a single packet (say: a DNS packet), we ended up sending 61 packets over 2 minutes: the 1 DNS query and then then 60 disco pings (2 minutes / 2 seconds) & received the same (1 DNS response + 60 pongs). Now it's 15. In 1.22 we plan to remove this whole timer-based heartbeat mechanism entirely. The 5 seconds to 6.5 seconds change is just stretching out that interval so you can still miss two heartbeats (other 3 + 3 seconds would be greater than 5 seconds). This means that if your peer moves without telling you, you can have a path out for 6.5 seconds now instead of 5 seconds before disco finds a new one. That will also improve in 1.22 when we start doing UDP+DERP at the same time when confidence starts to go down on a UDP path. Updates #3363 Change-Id: Ic2314bbdaf42edcdd7103014b775db9cf4facb47 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>		3 years ago
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bench	types/netmap: use key.NodePublic instead of tailcfg.NodeKey.	3 years ago
filter	wgengine/filter: let unknown IPProto match if IP okay & match allows all ports	3 years ago
magicsock	wgengine/magicsock: reduce disco ping heartbeat aggressiveness a bit	3 years ago
monitor	support running in a FreeBSD jail	3 years ago
netstack	wgengine/netstack: don't remove 255.255.255.255/32 from netstack	3 years ago
router	wgengine/router{windows}: return the output from the firewallTweaker	3 years ago
wgcfg	wgengine/wgcfg: recover from mismatched PublicKey/Endpoints	3 years ago
wglog	wgengine/wgcfg: convert to use new node key type.	3 years ago
winnet	all: gofmt -w -s (simplify) tests	3 years ago
mem_ios.go	go.mod: upgrade wireguard-windows, de-fork wireguard-go	3 years ago
pendopen.go	net/socks5/tssocks, wgengine: permit SOCKS through subnet routers/exit nodes	3 years ago
userspace.go	ipnlocal, net/{dns,tsaddr,tstun}, wgengine: support MagicDNS on IPv6	3 years ago
userspace_ext_test.go	go.mod: upgrade wireguard-windows, de-fork wireguard-go	3 years ago
userspace_test.go	all: gofmt -w -s (simplify) tests	3 years ago
watchdog.go	net/socks5/tssocks, wgengine: permit SOCKS through subnet routers/exit nodes	3 years ago
watchdog_test.go	all: close fake userspace engines when tests complete	3 years ago
wgengine.go	net/socks5/tssocks, wgengine: permit SOCKS through subnet routers/exit nodes	3 years ago