EtherGuard-VPN/constants.go

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/* SPDX-License-Identifier: GPL-2.0
*
* Copyright (C) 2017-2018 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
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* Copyright (C) 2017-2018 Mathias N. Hall-Andersen <mathias@hall-andersen.dk>.
*/
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package main
import (
"time"
)
/* Specification constants */
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const (
RekeyAfterMessages = (1 << 64) - (1 << 16) - 1
RejectAfterMessages = (1 << 64) - (1 << 4) - 1
RekeyAfterTime = time.Second * 120
RekeyAttemptTime = time.Second * 90
RekeyTimeout = time.Second * 5
MaxTimerHandshakes = 90 / 5 /* RekeyAttemptTime / RekeyTimeout */
RekeyTimeoutJitterMaxMs = 334
RejectAfterTime = time.Second * 180
KeepaliveTimeout = time.Second * 10
CookieRefreshTime = time.Second * 120
HandshakeInitationRate = time.Second / 20
PaddingMultiple = 16
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)
/* Implementation specific constants */
const (
QueueOutboundSize = 1024
QueueInboundSize = 1024
QueueHandshakeSize = 1024
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MaxSegmentSize = (1 << 16) - 1 // largest possible UDP datagram
MinMessageSize = MessageKeepaliveSize // minimum size of transport message (keepalive)
MaxMessageSize = MaxSegmentSize // maximum size of transport message
MaxContentSize = MaxSegmentSize - MessageTransportSize // maximum size of transport message content
)
const (
UnderLoadQueueSize = QueueHandshakeSize / 8
UnderLoadAfterTime = time.Second // how long does the device remain under load after detected
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MaxPeers = 1 << 16 // maximum number of configured peers
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)