Network

Network Protocol

The following diagram lists all fields of Network Protocol.

|-------byte-------|------byte------|------byte------|------byte------| (4bytes)
|---HeaderLength---|                                
|-------------------------------- Magic ------------------------------|
|-------------------------------- Code -------------------------------|
|-------------------------------- DataLength -------------------------|
|-------------------------------- DataChecksum -----------------------|
|-------------------------------- Reserved ---------------------------|
|-------------------------------- Body -------------------------------|

MessageHeader is including:

• Magic
• Code
• DataLength
• DataChecksum
• Reserved

MessageBody is including:

• Body

---

HeaderLength: 8bits(1byte)

• The total length of the message header.

Magic: 32bits(4bytes)

• Check for if the message is for Mainnet or Testnet.

Code: 32bits(4bytes)

• Stand for the types of message:
  • 0x00 Ping
  • 0x01 Pong
  • 0x02 PeerDiscover
  • 0x03 PeerDiscoverReply
  • 0x04 NewBlockMsg
  • 0x05 TransacionMsg
  • 0x10 LocateForkPointRequest
  • 0x11 LocateForkPointResponse
  • 0x12 BlockChunkRequest
  • 0x13 BlockChunkResponse

DataLength: 32bits(4bytes)

• The total length of message body.

DataChecksum: 32bits(4bytes)

• The CRC32 checksum of the data.

Reserved: 32bits(4bytes)

• reserved field.

Body

• The message body.
• The body length is dynamically expanding, the maximum length is 512MB.