github.com/inazumav/sing-box@v0.0.0-20230926072359-ab51429a14f1/outbound/lookback.go (about)

     1  package outbound
     2  
     3  import "context"
     4  
     5  type outboundTagKey struct{}
     6  
     7  func ContextWithTag(ctx context.Context, outboundTag string) context.Context {
     8  	return context.WithValue(ctx, outboundTagKey{}, outboundTag)
     9  }
    10  
    11  func TagFromContext(ctx context.Context) (string, bool) {
    12  	value, loaded := ctx.Value(outboundTagKey{}).(string)
    13  	return value, loaded
    14  }