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shorten LargestObserved in ACK frames

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fixes #82
This commit is contained in:
Marten Seemann
2016-05-12 20:00:54 +07:00
parent 076349554f
commit 0df44e46e5
5 changed files with 178 additions and 72 deletions
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14
protocol/packet_number.go
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@@ -42,3 +42,17 @@ func GetPacketNumberLengthForPublicHeader(packetNumber PacketNumber, highestAcke
// we do not check if there are less than 2^46 packets in flight, since flow control and congestion control will limit this number *a lot* sooner
return PacketNumberLen6
}
// GetPacketNumberLength gets the minimum length needed to fully represent the packet number
func GetPacketNumberLength(packetNumber PacketNumber) PacketNumberLen {
if packetNumber < (1 << (uint8(PacketNumberLen1) * 8)) {
return PacketNumberLen1
}
if packetNumber < (1 << (uint8(PacketNumberLen2) * 8)) {
return PacketNumberLen2
}
if packetNumber < (1 << (uint8(PacketNumberLen4) * 8)) {
return PacketNumberLen4
}
return PacketNumberLen6
}