yggdrasil-network/yggdrasil-go
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when we detect we're blocked, only drop packets often enough to make sure the existing queue's size is non-increasing, and always drop the worst packet from a random flow with odds based on the total size of packets queued for that flow

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This commit is contained in:
Arceliar 2020-05-17 12:09:40 -05:00
parent 6e92af1cd2
commit 7720e169f2
2 changed files with 22 additions and 30 deletions
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20
src/yggdrasil/peer.go
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@ -110,6 +110,7 @@ type peer struct {
queue packetQueue
seq uint64 // this and idle are used to detect when to drop packets from queue
idle bool
drop bool // set to true if we're dropping packets from the queue
}
func (ps *peers) updateTables(from phony.Actor, table *lookupTable) {
@ -275,13 +276,19 @@ func (p *peer) sendPacketsFrom(from phony.Actor, packets [][]byte) {
}
func (p *peer) _sendPackets(packets [][]byte) {
size := p.queue.size
for _, packet := range packets {
p.queue.push(packet)
}
if p.idle {
switch {
case p.idle:
p.idle = false
p._handleIdle()
} else {
case p.drop:
for p.queue.size > size {
p.queue.drop()
}
default:
p.intf.notifyQueued(p.seq)
}
}
@ -303,17 +310,14 @@ func (p *peer) _handleIdle() {
p.intf.out(packets)
} else {
p.idle = true
p.drop = false
}
}
func (p *peer) dropFromQueue(from phony.Actor, seq uint64) {
p.Act(from, func() {
switch {
case seq != p.seq:
case p.queue.size < streamMsgSize:
case p.queue.drop():
p.core.log.Debugln("DEBUG dropped:", p.port, p.queue.size)
p.intf.notifyQueued(p.seq)
if seq == p.seq {
p.drop = true
}
})
}