package weave

import (
	"time"
)

const (
	Protocol          = "weave"
	ProtocolVersion   = 8
	UDPOverhead       = 28 // 20 bytes for IPv4, 8 bytes for UDP
	EthernetOverhead  = 14
	Port              = 6783
	DefaultPMTU       = 65535
	MaxUDPPacketSize  = 65536
	ChannelSize       = 16
	UDPNonceSendAt    = 8192
	FragTestSize      = 60001
	PMTUDiscoverySize = 60000
	FastHeartbeat     = 500 * time.Millisecond
	SlowHeartbeat     = 10 * time.Second
	FetchAllInterval  = 30 * time.Second
	FragTestInterval  = 5 * time.Minute
	PMTUVerifyTimeout = 5 * time.Second
)

const (
	ProtocolConnectionEstablished  = iota
	ProtocolFragmentationReceived  = iota
	ProtocolStartFragmentationTest = iota
	ProtocolNonce                  = iota
	ProtocolFetchAll               = iota
	ProtocolUpdate                 = iota
	ProtocolPMTUVerified           = iota
)

var (
	FragTest                           = make([]byte, FragTestSize)
	PMTUDiscovery                      = make([]byte, PMTUDiscoverySize)
	ProtocolConnectionEstablishedByte  = []byte{ProtocolConnectionEstablished}
	ProtocolFragmentationReceivedByte  = []byte{ProtocolFragmentationReceived}
	ProtocolStartFragmentationTestByte = []byte{ProtocolStartFragmentationTest}
	ProtocolNonceByte                  = []byte{ProtocolNonce}
	ProtocolFetchAllByte               = []byte{ProtocolFetchAll}
	ProtocolUpdateByte                 = []byte{ProtocolUpdate}
	ProtocolPMTUVerifiedByte           = []byte{ProtocolPMTUVerified}
)