mirror of
https://github.com/v2fly/v2ray-core.git
synced 2024-10-02 16:56:02 -04:00
51 lines
917 B
Go
51 lines
917 B
Go
package kcp
|
|
|
|
type ReceivingWindow struct {
|
|
start uint32
|
|
size uint32
|
|
list []*Segment
|
|
}
|
|
|
|
func NewReceivingWindow(size uint32) *ReceivingWindow {
|
|
return &ReceivingWindow{
|
|
start: 0,
|
|
size: size,
|
|
list: make([]*Segment, size),
|
|
}
|
|
}
|
|
|
|
func (this *ReceivingWindow) Size() uint32 {
|
|
return this.size
|
|
}
|
|
|
|
func (this *ReceivingWindow) Position(idx uint32) uint32 {
|
|
return (idx + this.start) % this.size
|
|
}
|
|
|
|
func (this *ReceivingWindow) Set(idx uint32, value *Segment) bool {
|
|
pos := this.Position(idx)
|
|
if this.list[pos] != nil {
|
|
return false
|
|
}
|
|
this.list[pos] = value
|
|
return true
|
|
}
|
|
|
|
func (this *ReceivingWindow) Remove(idx uint32) *Segment {
|
|
pos := this.Position(idx)
|
|
e := this.list[pos]
|
|
this.list[pos] = nil
|
|
return e
|
|
}
|
|
|
|
func (this *ReceivingWindow) RemoveFirst() *Segment {
|
|
return this.Remove(0)
|
|
}
|
|
|
|
func (this *ReceivingWindow) Advance() {
|
|
this.start++
|
|
if this.start == this.size {
|
|
this.start = 0
|
|
}
|
|
}
|