frame spec:

• protocol version [2b]
  • 00 first version
  • 01 v1 (v0 compatible)
  • 10 v2 (v0,v1 compatible)
  • 11 v3 (incompatible with previous versions)
• Frame context [3b]
  • 000 No context (contains hop list)
  • 001 Same connection
  • 010 Same message
  • 011 Termination (End stream)
  • 100 Reserved
  • 101 Same connection reply
  • 110 Same message reply
  • 111 Termination reply (End stream)
• Misc flags [3b]
  • Require ack [1b]
  • Encrypted [1b]
  • Anonymous sender [1b]
• Connection id [4B]
• Message id [2B]
• ?Hop list (only if Frame context == 000 no context)
  • realm [1B]
    • 2b address len
      • 00 4B
      • 01 8B
      • 10 16B
      • 11 cstr
    • 6b realm id
  • addr (>4B)
• Payload type [1B]
• Payload CRC [2B] (if set to 0 ignore)
• Payload len [4B]
  • if 0xff 0xff 0xff 0xff then its stream and ends with termination packet
  • if 0xff 0xff 0xff 0xfe then the payload is cstring (terminated with 0x00 0x00)
• Payload…

19B min packet

Mesh device spec:

DEFAULT) transmit frame (to next address, if crypto capable decrypt and transmit)

1) Get node info

2) Store key (if crypto capable signed key storage enabled)

3) Get neighbors

Realms

• 00 000000 Lora mesh
• 00 000001 IPv4 (UDP)
• 10 000001 IPv6 (UDP)
• 11 000001 DNS (UDP)

Payload type

[1b] (0 realm specific, 1 general type) [7b] type

General types (in decimal)

• 0 text message
• 1 file
• 2 tar

Realm specific types