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Brad Fitzpatrick 1b0f7b3c6c ipn, ipn/ipnlocal: remove legacy runtime Notify.NetMap emission, rate limiting

The WinUI GUI was the last consumer of the legacy Notify.NetMap field
on runtime (non-initial) IPN bus messages. It was converted to peer
deltas in tailscale/corp#47958, and the GUI and tailscaled ship
together as a unit on Windows, so tailscaled no longer needs to build
and emit full netmaps on the bus on any platform. Remove
goosGetsLegacyNetmapNotify and the code it gated. The initial netmap
(NotifyInitialNetMap) is unaffected; NotifyNoNetMap is now a no-op but
remains accepted for compatibility.

With no runtime netmaps left to rate limit, the NotifyRateLimit
subscription bit is meaningless, so remove the rateLimitingBusSender
machinery too. The bit value stays reserved under the name
ObsoleteNotifyRateLimit and ValidateNotifyWatchOpt now rejects
subscriptions that set it; previously it was only rejected in
combination with new-style delta bits.

Updates #12542

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Change-Id: Ic6184ea549726de9d9d56f133aae21e53f62cbc5

2026-09-14 09:37:30 -07:00

cert.go

ipn/localapi,client/local: honour Retry-After on cert rate-limit (#20315 )

2026-07-08 13:34:40 +01:00

debug_test.go

ipn/localapi: require local admin for dev-set-state-store (#21222 )

2026-09-11 14:07:53 -06:00

debug.go

ipn/localapi: require local admin for dev-set-state-store (#21222 )

2026-09-11 14:07:53 -06:00

debugderp.go

tailcfg: replace int with DERPRegionID for additional type safety (#20646 )