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ipn/ipnlocal: add IPN Bus NotifyRateLimit watch bit NotifyRateLimit

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Limit spamming GUIs with boring updates to once in 3 seconds, unless
the notification is relatively interesting and the GUI should update
immediately.

This is basically @barnstar's #14119 but with the logic moved to be
per-watch-session (since the bit is per session), rather than
globally. And this distinguishes notable Notify messages (such as
state changes) and makes them send immediately.

Updates tailscale/corp#24553

Change-Id: I79cac52cce85280ce351e65e76ea11e107b00b49
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick
2024-11-15 13:31:35 -08:00
committed by Brad Fitzpatrick
parent c2a7f17f2b
commit 93db503565
5 changed files with 395 additions and 10 deletions
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2
ipn/backend.go
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@@ -73,6 +73,8 @@ const (
NotifyInitialOutgoingFiles // if set, the first Notify message (sent immediately) will contain the current Taildrop OutgoingFiles
NotifyInitialHealthState // if set, the first Notify message (sent immediately) will contain the current health.State of the client
NotifyRateLimit // if set, rate limit spammy netmap updates to every few seconds
)
// Notify is a communication from a backend (e.g. tailscaled) to a frontend