package ackhandler import "v2ray.com/core/external/github.com/lucas-clemente/quic-go/internal/wire" // Returns a new slice with all non-retransmittable frames deleted. func stripNonRetransmittableFrames(fs []wire.Frame) []wire.Frame { res := make([]wire.Frame, 0, len(fs)) for _, f := range fs { if IsFrameRetransmittable(f) { res = append(res, f) } } return res } // IsFrameRetransmittable returns true if the frame should be retransmitted. func IsFrameRetransmittable(f wire.Frame) bool { switch f.(type) { case *wire.AckFrame: return false default: return true } } // HasRetransmittableFrames returns true if at least one frame is retransmittable. func HasRetransmittableFrames(fs []wire.Frame) bool { for _, f := range fs { if IsFrameRetransmittable(f) { return true } } return false }