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Communication between the nodes is done using the Remote Procedure Call (RPC) protocol. The RPC protocol is a simple protocol that allows a client to call a function on the network. The network will execute the function and return the result to the client.
Unchained implements a simple RPC protocol as follows:
  • opcode is a 1-byte field that specifies the operation to be performed.
  • data is a variable-length field that contains the data for the operation. Data is serialized using the MessagePack format.
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