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ipn: fix some mutex/ownership issues

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Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick
2020-02-25 12:30:28 -08:00
committed by Brad Fitzpatrick
parent 6d2ac01464
commit eefafad9f8
3 changed files with 76 additions and 53 deletions
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17
ipn/backend.go
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@ -29,6 +29,7 @@ func (s State) String() string {
"Stopped", "Starting", "Running"}[s]
}
// EngineStatus contains WireGuard engine stats.
type EngineStatus struct {
RBytes, WBytes wgengine.ByteCount
NumLive int
@ -99,18 +100,24 @@ type Options struct {
Notify func(Notify) `json:"-"`
}
// Backend is the interface between Tailscale frontends
// (e.g. cmd/tailscale, iOS/MacOS/Windows GUIs) and the tailscale
// backend (e.g. cmd/tailscaled) running on the same machine.
// (It has nothing to do with the interface between the backends
// and the cloud control plane.)
type Backend interface {
// Start or restart the backend, because a new Handle has connected.
Start(opts Options) error
// Start starts or restarts the backend, typically when a
// frontend client connects.
Start(Options) error
// StartLoginInteractive requests to start a new interactive login
// flow. This should trigger a new BrowseToURL notification
// eventually.
StartLoginInteractive()
// Logout terminates the current login session and stop the
// Logout terminates the current login session and stops the
// wireguard engine.
Logout()
// SetPrefs install a new set of user preferences, including
// WantRunning. This may cause the wireguard engine to
// SetPrefs installs a new set of user preferences, including
// WantRunning. This may cause the wireguard engine to
// reconfigure or stop.
SetPrefs(new *Prefs)
// RequestEngineStatus polls for an update from the wireguard