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tailscale/wgengine
Andrew Dunham 727acf96a6 net/netcheck: use DERP frames as a signal for home region liveness
This uses the fact that we've received a frame from a given DERP region
within a certain time as a signal that the region is stil present (and
thus can still be a node's PreferredDERP / home region) even if we don't
get a STUN response from that region during a netcheck.

This should help avoid DERP flaps that occur due to losing STUN probes
while still having a valid and active TCP connection to the DERP server.

RELNOTE=Reduce home DERP flapping when there's still an active connection

Updates #8603

Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: If7da6312581e1d434d5c0811697319c621e187a0
6 months ago
..
bench tailcfg, all: use []netip.AddrPort instead of []string for Endpoints 8 months ago
capture various: add golangci-lint, fix issues (#7905) 1 year ago
filter wgengine/filter: add protocol-agnostic packet checker (#10446) 6 months ago
magicsock net/netcheck: use DERP frames as a signal for home region liveness 6 months ago
netlog wgengine/netlog: fix nil pointer dereference in logtail (#8598) 11 months ago
netstack wgengine/netstack: disable RACK on Windows (#10402) 6 months ago
router wgengine/router: implement UpdateMagicsockPort for CallbackRouter (#10494) 6 months ago
wgcfg cmd/cloner,*: revert: optimize nillable slice cloner 8 months ago
wgint all: update copyright and license headers 1 year ago
wglog all: update copyright and license headers 1 year ago
winnet all: update copyright and license headers 1 year ago
mem_ios.go all: update copyright and license headers 1 year ago
pendopen.go types/netmap, all: use read-only tailcfg.NodeView in NetworkMap 10 months ago
userspace.go util/linuxfw, wgengine: allow ingress to magicsock UDP port on Linux (#10370) 6 months ago
userspace_ext_test.go tsd: add package with System type to unify subsystem init, discovery 1 year ago
userspace_test.go control,tailcfg,wgengine/magicsock: add nodeAttr to enable/disable peer MTU 9 months ago
watchdog.go wgengine, proxymap: split out port mapping from Engine to new type 9 months ago
watchdog_js.go all: update copyright and license headers 1 year ago
watchdog_test.go all: update copyright and license headers 1 year ago
wgengine.go wgengine, proxymap: split out port mapping from Engine to new type 9 months ago