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tailscale/ipn/ipnlocal
Adrian Dewhurst 3bf2bddbb5 ipn/ipnlocal: improve testability of random node selection
In order to test the sticky last suggestion code, a test was written for
LocalBackend.SuggestExitNode but it contains a random number generator
which makes writing comprehensive tests very difficult. This doesn't
change how the last suggestion works, but it adds some infrastructure to
make that easier in a later PR.

This adds func parameters for the two randomized parts: breaking ties
between DERP regions and breaking ties between nodes. This way tests can
validate the entire list of tied options, rather than expecting a
particular outcome given a particular random seed.

As a result of this, the global random number generator can be used
rather than seeding a local one each time.

In order to see the tied nodes for the location based (i.e. Mullvad)
case, pickWeighted needed to return a slice instead of a single
arbitrary option, so there is a small change in how that works.

Updates tailscale/corp#19681

Change-Id: I83c48a752abdec0f59c58ccfd8bfb3f3f17d0ea8
Signed-off-by: Adrian Dewhurst <adrian@tailscale.com>
6 months ago
..
testdata ipn/ipnlocal: fix the path for writing cert files (#7203) 2 years ago
breaktcp_darwin.go cmd/tailscale: add debug commands to break connections 1 year ago
breaktcp_linux.go cmd/tailscale: add debug commands to break connections 1 year ago
c2n.go ipn/ipnlocal: support c2n updates with old systemd versions (#12296) 6 months ago
c2n_pprof.go ipn/ipnlocal: add c2n /debug/pprof/allocs endpoint 8 months ago
c2n_test.go util/cmpx: delete now that we're using Go 1.22 10 months ago
cert.go ipn/ipnlocal: remove ancient transition mechanism for https certs 10 months ago
cert_js.go ipn/ipnlocal: add c2n method to check on TLS cert fetch status 1 year ago
cert_test.go all: use Go 1.21 slices, maps instead of x/exp/{slices,maps} 1 year ago
dnsconfig_test.go util/cmpx: delete now that we're using Go 1.22 10 months ago
drive.go ipn/ipnlocal: reuse transport across Taildrive remotes 7 months ago
expiry.go ssh/tailssh: use control server time instead of local time 1 year ago
expiry_test.go types/netmap, all: make NetworkMap.SelfNode a tailcfg.NodeView 1 year ago
local.go ipn/ipnlocal: improve testability of random node selection 6 months ago
local_test.go ipn/ipnlocal: improve testability of random node selection 6 months ago
loglines_test.go ipn/ipnlocal, all: plumb health trackers in tests 7 months ago
network-lock.go ipn/ipnlocal: discard node keys that have been rotated out 6 months ago
network-lock_test.go ipn/ipnlocal: discard node keys that have been rotated out 6 months ago
peerapi.go net/{interfaces,netmon}, all: merge net/interfaces package into net/netmon 7 months ago
peerapi_h2c.go all: update copyright and license headers 2 years ago
peerapi_macios_ext.go net/netmon, add: add netmon.State type alias of interfaces.State 7 months ago
peerapi_test.go ipn/ipnlocal, all: plumb health trackers in tests 7 months ago
profiles.go various: disable stateful filtering by default (#12197) 6 months ago
profiles_notwindows.go ipn/ipnlocal: fix profile duplication 1 year ago
profiles_test.go various: disable stateful filtering by default (#12197) 6 months ago
profiles_windows.go ipn/ipnlocal: set default NoStatefulFiltering in ipn.NewPrefs (#12031) 7 months ago
serve.go all: use Go 1.22 range-over-int 8 months ago
serve_test.go ipn/ipnlocal, all: plumb health trackers in tests 7 months ago
ssh.go ipnlocal: log failure to get ssh host keys 10 months ago
ssh_stub.go ipnlocal: log failure to get ssh host keys 10 months ago
ssh_test.go ipn/ipnlocal: plumb health.Tracker into profileManager constructor 7 months ago
state_test.go control/controlclient: delete unused Client.Login Oauth2Token field 7 months ago
taildrop.go ipn/localapi: add support for multipart POST to file-put 8 months ago
web_client.go all: remove LenIter, use Go 1.22 range-over-int instead 9 months ago
web_client_stub.go ipn/ipnlocal: add mutex to webClient struct 1 year ago