sing-box/outbound/lookback.go
2023-04-08 09:13:50 +08:00

15 lines
347 B
Go

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
}