route/vendor/github.com/lucas-clemente/quic-go/ackhandler/retransmittable.go

37 lines
844 B
Go
Raw Normal View History

2018-01-03 19:19:49 +00:00
package ackhandler
import "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.StopWaitingFrame:
return false
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
}