Messages

Default

All (except response)

Byte	0-1	2	3	4-n
Content	Length of Type Data	ID	Type	Type Data
Data type	UInt16	UInt8	UInt8

Response (Type 0)

Byte	0-n
Content	Message
Data type

if it responds to a forwarded message, the response is forwarded to the sender

Direct (Type 1)

Byte	0-n
Content	Message
Data type

Config (Type 2)

Byte	0	1-n
Content	SubType	connection options
Data type	UInt8	data from subtype

JSON config (Type 2.0)

Byte	0-n
Content	connection options
Data type	JSON

Distance (Type 2.1)

Byte	0-15	16
Content	UUID	Distance (FF for removed)
Data type	UUID	UInt8

Distance without self (Type 2.2)

Request:

Byte	0-15
Content	UUID
Data type	UUID

Response:

Byte	0
Content	Distance
Data type	UInt8

Broadcast (Type 3)

Request:

Byte	0	1	2-n
Content	TTL	SubType	SubType Data
Data type	UInt8	UInt8

Response:

Byte	0-1	2-n	n-(n+2)	(n+2)-m	...
Content	Length of response a	Response a	Length of response b	Response b	...
Data type	UInt16	Response	UInt16	Response	...

Broadcasts are forwarded to all contacts with a decremented TTL as long as TTL is bigger than 0. A node responds with all unique response it got plus its own. If the same message is received a short time after the first time getting it (has the same hash), it is ignored (empty response)

Route (Type 4)

Request:

Byte	0	1-16	17	18-n
Content	TTL	Receiver	SubType	SubType Data
Data type	UInt8	UUID	UInt8

Response:

Byte	0-1	2-n	n-(n+2)	(n+2)-m	...
Content	Length of response a	Response a	Length of response b	Response b	...
Data type	UInt16	Response	UInt16	Response	...

Individual Response on failure

Byte	0
Content	Status
Data type	UInt8

If the receiver is a connected contact, this is forwarded to it, else if it has a referral entry this is forwarded to them, otherwise it's forwarded to all connected contacts with TTL decremented as long TTL is bigger than 0. An empty response means that TTL reached 0 before getting to the Receiver, a node responds with all unique response it got. If the same message is received a short time after the first time getting it (has the same hash), it is ignored (empty response)

Connect (Type 4.0)

encrypted with RSA

Request:

Byte	0-15	16-17	18-n
Content	UUID	Port	IP
Data type	UUID	UInt16	IP

Response:

Byte	0-1	2-n
Content	Port	IP
Data type	UInt16	IP

Contact Request (Type 4.1)

encrypted with preshared key

Request:

Byte	0-15	16-n
Content	UUID	Public Key
Data type	UUID	Public Key

Response:

Byte	0-n
Content	Public Key
Data type	Public Key

IP

Byte	0	1-n
Content	Type	Data
Data type	UInt8

IPv4

Byte	0	1	2	3
Content	Part 1	Part 2	Part 3	Part 4
Data type	UInt8	UInt8	UInt8	UInt8

IPv6

Byte	0-15
Content	IP
Data type	IPv6

Status

Status	Meaning
0	general failure
1	Not reachable (for Route/Broadcast)
2	unsupported message type
3	Unauthenticated

Officially recognized types of various Mesh-based programs/standards

Tunnel (Type 5)

Byte	0	1-16	2-3	4-n
Content	TTL	Receiver	ID	Packet
Data type	UInt8	UUID	UInt16

Tunnels are like Route messages, but the Path persists until it is closed, all messages after the first are treated as responses.