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tailscale/tstest
Brad Fitzpatrick 75a03fc719 wgengine/magicsock: use learned DERP route as send path of last resort
If we get a packet in over some DERP and don't otherwise know how to
reply (no known DERP home or UDP endpoint), this makes us use the
DERP connection on which we received the packet to reply. This will
almost always be our own home DERP region.

This is particularly useful for large one-way nodes (such as
hello.ts.net) that don't actively reach out to other nodes, so don't
need to be told the DERP home of peers. They can instead learn the
DERP home upon getting the first connection.

This can also help nodes from a slow or misbehaving control plane.

Updates tailscale/corp#26438

Change-Id: I6241ec92828bf45982e0eb83ad5c7404df5968bc
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
9 months ago
..
archtest all: cleanup unused code, part 1 (#10661) 2 years ago
deptest tstest/deptest: add DepChecker.ExtraEnv option for callers to set 9 months ago
integration wgengine/magicsock: use learned DERP route as send path of last resort 9 months ago
iosdeps feature/capture: move packet capture to feature/*, out of iOS + CLI 10 months ago
jsdeps all: use math/rand/v2 more 2 years ago
natlab all: use new LocalAPI client package location 10 months ago
nettest cmd/derper,tstest/nettest: skip network-needing test in airplane mode 2 years ago
tailmac tstest/tailmac: add support for mounting host directories in the guest (#13957) 1 year ago
tools go.{mod,sum},tstest/tools,k8s-operator,cmd/k8s-operator: autogenerate CRD API docs (#12884) 1 year ago
allocs.go all: update copyright and license headers 3 years ago
clock.go tstime: add Since method (#8622) 2 years ago
clock_test.go all: use Go 1.22 range-over-int 2 years ago
log.go wgengine/magicsock: disable portmapper in tunchan-faked tests 2 years ago
log_test.go all: update copyright and license headers 3 years ago
reflect.go net/dns: fix IsZero and Equal methods on OSConfig 1 year ago
resource.go tstest: avoid Fatal in ResourceCheck to show panic (#13790) 1 year ago
test-wishlist.md wf/firewall: allow link-local multicast for permitted local routes when the killswitch is on on Windows 1 year ago
tstest.go ipn/{conffile,ipnlocal}: start booting tailscaled from a config file w/ auth key 2 years ago
tstest_test.go tstest: add method to Replace values for tests 3 years ago