Align with go library layout

constants.go

@@ -0,0 +1,43 @@
+package main
+
+import (
+	"time"
+)
+
+/* Specification constants */
+
+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
+	RejectAfterTime        = time.Second * 180
+	KeepaliveTimeout       = time.Second * 10
+	CookieRefreshTime      = time.Second * 120
+	HandshakeInitationRate = time.Second / 20
+	PaddingMultiple        = 16
+)
+
+const (
+	RekeyAfterTimeReceiving = RekeyAfterTime - KeepaliveTimeout - RekeyTimeout
+	NewHandshakeTime        = KeepaliveTimeout + RekeyTimeout // upon failure to acknowledge transport message
+)
+
+/* Implementation specific constants */
+
+const (
+	QueueOutboundSize  = 1024
+	QueueInboundSize   = 1024
+	QueueHandshakeSize = 1024
+	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
+	MaxPeers           = 1 << 16     // maximum number of configured peers
+)