Node / rns-mirrors / Reticulum-Go.git / files / pkg / packet / constants.go

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// SPDX-License-Identifier: Apache-2.0

// Copyright (c) 2024-2026 Quad4.io

package packet

// Sizes and propagation/destination type constants.

const (

EncryptedMDU = 383

PlainMDU = 464

PropagationBroadcast = 0

PropagationTransport = 1

DestinationSingle = 0

DestinationGroup = 1

DestinationPlain = 2

DestinationLink = 3

MinAnnounceSize = 170

TruncatedHashLength = 16

MinPacketSize = 3

PathfinderM = 128

// LinkRequestECPubSize is the combined X25519 + Ed25519 public key size in link requests.

LinkRequestECPubSize = 64

ReceiptTimeoutBaseSec = 15

ReceiptTimeoutPerHopSec = 3

)

// Header flag bit masks for packing/unpacking.

const (

HeaderMaskHeaderType = 0x40

HeaderMaskContextFlag = 0x20

HeaderMaskTransportType = 0x10

HeaderMaskDestinationType = 0x0C

HeaderMaskPacketType = 0x03

HashableFlagsMask = 0x0F

)

// Packet types, header types, context and flag constants.

const (

PacketTypeData = 0x00

PacketTypeAnnounce = 0x01

PacketTypeLinkReq = 0x02

PacketTypeProof = 0x03

HeaderType1 = 0x00

HeaderType2 = 0x01

ContextNone = 0x00

ContextResource = 0x01

ContextResourceAdv = 0x02

ContextResourceReq = 0x03

ContextResourceHMU = 0x04

ContextResourcePRF = 0x05

ContextResourceICL = 0x06

ContextResourceRCL = 0x07

ContextCacheReq = 0x08

ContextRequest = 0x09

ContextResponse = 0x0A

ContextPathResponse = 0x0B

ContextCommand = 0x0C

ContextCmdStatus = 0x0D

ContextChannel = 0x0E

ContextKeepalive = 0xFA

ContextLinkIdentify = 0xFB

ContextLinkClose = 0xFC

ContextLinkProof = 0xFD

ContextLRRTT = 0xFE

ContextLRProof = 0xFF

FlagSet = 0x01

FlagUnset = 0x00

HeaderMaxSize = 64

MTU = 500

MaxInboundPacketSize = 262144

AddressSize = 32

)