{
  "$schema": "../../schema/test-vector.schema.json",
  "name": "Framing - Minimal Valid Packets",
  "spec_ref": "src/01-wire-format.md",
  "protocol_version": 0,
  "description": "Tests the smallest valid packets for each route type. A valid packet must have at least header(1) + path_len(1) + payload(1+) bytes, plus 4 bytes for transport codes if applicable.",
  "vectors": [
    {
      "id": "min-001",
      "description": "Minimal FLOOD packet: 3 bytes (header + path_len + 1-byte payload)",
      "type": "encode_decode",
      "structured": {
        "header": {
          "version": 0,
          "payload_type": "raw_custom",
          "route_type": "flood"
        },
        "path": {
          "hash_size": 1,
          "hash_count": 0,
          "hashes": []
        },
        "payload": {
          "data": "FF"
        }
      },
      "binary": "3D 00 FF",
      "notes": "Smallest valid FLOOD packet: 3 bytes total."
    },
    {
      "id": "min-002",
      "description": "Minimal DIRECT packet: 3 bytes",
      "type": "encode_decode",
      "structured": {
        "header": {
          "version": 0,
          "payload_type": "raw_custom",
          "route_type": "direct"
        },
        "path": {
          "hash_size": 1,
          "hash_count": 0,
          "hashes": []
        },
        "payload": {
          "data": "FF"
        }
      },
      "binary": "3E 00 FF",
      "notes": "Smallest valid DIRECT packet: 3 bytes total."
    },
    {
      "id": "min-003",
      "description": "Minimal TRANSPORT_FLOOD packet: 7 bytes (header + 4 transport + path_len + 1-byte payload)",
      "type": "encode_decode",
      "structured": {
        "header": {
          "version": 0,
          "payload_type": "raw_custom",
          "route_type": "transport_flood"
        },
        "transport_codes": [
          0,
          0
        ],
        "path": {
          "hash_size": 1,
          "hash_count": 0,
          "hashes": []
        },
        "payload": {
          "data": "FF"
        }
      },
      "binary": "3C 0000 0000 00 FF",
      "notes": "Smallest valid TRANSPORT_FLOOD packet: 7 bytes total."
    },
    {
      "id": "min-004",
      "description": "Minimal TRANSPORT_DIRECT packet: 7 bytes",
      "type": "encode_decode",
      "structured": {
        "header": {
          "version": 0,
          "payload_type": "raw_custom",
          "route_type": "transport_direct"
        },
        "transport_codes": [
          0,
          0
        ],
        "path": {
          "hash_size": 1,
          "hash_count": 0,
          "hashes": []
        },
        "payload": {
          "data": "FF"
        }
      },
      "binary": "3F 0000 0000 00 FF",
      "notes": "Smallest valid TRANSPORT_DIRECT packet: 7 bytes total."
    },
    {
      "id": "min-005",
      "description": "Minimal ACK via FLOOD: 6 bytes (header + path_len + 4-byte CRC)",
      "type": "encode_decode",
      "structured": {
        "header": {
          "version": 0,
          "payload_type": "ack",
          "route_type": "flood"
        },
        "path": {
          "hash_size": 1,
          "hash_count": 0,
          "hashes": []
        },
        "payload": {
          "ack_crc": "00000000"
        }
      },
      "binary": "0D 00 00000000",
      "notes": "ACK with zero CRC. 6 bytes total."
    }
  ]
}