protocols.json

{
   "Ethernet":{
      "total-length":14,
      "Destination MAC":48,
      "Source MAC":48,
      "Type":16,
      "order":[
         "Destination MAC",
         "Source MAC",
         "Type"
      ]
   },
   "ICMP":{
      "total-length":8,
      "Type":8,
      "Code":8,
      "Checksum":16,
      "order":[
         "Type",
         "Code",
         "Checksum"
      ]
   },
   "UDP":{
      "total-length":8,
      "Source port":16,
      "Destination port":16,
      "Length":16,
      "Checksum":16,
      "order":[
         "Source port",
         "Destination port",
         "Length",
         "Checksum"
      ]
   },
   "TCP":{
      "total-length":20,
      "Source port":16,
      "Destination port":16,
      "Sequence Number":32,
      "Acknowledgment Number":32,
      "Header Length":4,
      "Reserved":6,
      "URG":1,
      "ACK":1,
      "PSH":1,
      "RST":1,
      "SYN":1,
      "FIN":1,
      "Window":16,
      "Checksum":16,
      "order":[
         "Source port",
         "Destination port",
         "Sequence Number",
         "Acknowledgment Number",
         "Header Length",
         "Reserved",
         "URG",
         "ACK",
         "PSH",
         "RST",
         "SYN",
         "FIN",
         "Window",
         "Checksum"
      ]
   },
   "IP":{
      "total-length":20,
      "Version":4,
      "Header Length":4,
      "ToS":8,
      "Total Length":16,
      "ID":16,
      "Flags":3,
      "Fragment Offset":13,
      "TTL":8,
      "Next Protocol":8,
      "Checksum":16,
      "Source IP":32,
      "Destination IP":32,
      "order":[
         "Version",
         "Header Length",
         "ToS",
         "Total Length",
         "ID",
         "Flags",
         "Fragment Offset",
         "TTL",
         "Next Protocol",
         "Checksum",
         "Source IP",
         "Destination IP"
      ]
   }
}