sing-box/outbound/lookback.go

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347 B
Go
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2023-04-08 08:58:01 +08:00
package outbound
import "context"
type outboundTagKey struct{}
func ContextWithTag(ctx context.Context, outboundTag string) context.Context {
return context.WithValue(ctx, outboundTagKey{}, outboundTag)
}
func TagFromContext(ctx context.Context) (string, bool) {
value, loaded := ctx.Value(outboundTagKey{}).(string)
return value, loaded
}