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Improve MTU settings and documentation. #41

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This commit is contained in:
Kleissner
2021-11-09 21:04:06 +01:00
parent 014d4a34ee
commit ce37461705
4 changed files with 23 additions and 8 deletions
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8
protocol/Packet Encoding.go
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@@ -120,15 +120,15 @@ func PacketEncrypt(senderPrivateKey *btcec.PrivateKey, receiverPublicKey *btcec.
}
func packetGarbage(packetLength int) (random []byte) {
// Align maximum length at 508 bytes (UDP minimum no fragmentation) and 1472 bytes (MTU).
// Align maximum length at 508 bytes (UDP minimum no fragmentation) and at a relatively safe MTU.
maxLength := maxRandomGarbage
switch {
case packetLength == 508, packetLength == 1472:
case packetLength == 508, packetLength == internetSafeMTU:
return nil
case packetLength < 508 && (508-packetLength) < maxRandomGarbage:
maxLength = packetLength - 508
case packetLength < 1472 && (1472-packetLength) < maxRandomGarbage:
maxLength = packetLength - 1472
case packetLength < internetSafeMTU && (internetSafeMTU-packetLength) < maxRandomGarbage:
maxLength = packetLength - internetSafeMTU
}
b := make([]byte, rand.Intn(maxLength))