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ipn: don't set DebugFlags to len 1 slice of empty string [""]

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Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
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Brad Fitzpatrick 2020-10-20 10:40:12 -07:00 committed by Brad Fitzpatrick
parent 691f1d5c1d
commit 6b1d2a5630
1 changed files with 8 additions and 3 deletions
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11
ipn/local.go
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@ -36,9 +36,14 @@ import (
"tailscale.com/wgengine/tsdns"
)
var (
controlDebugFlags = strings.Split(os.Getenv("TS_DEBUG_CONTROL_FLAGS"), ",")
)
var controlDebugFlags = getControlDebugFlags()
func getControlDebugFlags() []string {
if e := os.Getenv("TS_DEBUG_CONTROL_FLAGS"); e != "" {
return strings.Split(e, ",")
}
return nil
}
// LocalBackend is the glue between the major pieces of the Tailscale
// network software: the cloud control plane (via controlclient), the