Module exonum::messages

Handling messages received from P2P node network.

Every message passes through three phases:

• Vec<u8>: raw bytes as received from the network
• SignedMessage: integrity and signature of the message has been verified
• Message: the message has been completely parsed and has correct structure

Graphical representation of the message processing flow:

+---------+             +---------------+                  +----------+
| Vec<u8> |--(verify)-->| SignedMessage |--(deserialize)-->| Message |-->(handle)
+---------+     |       +---------------+        |         +----------+
                |                                |
                V                                V
             (drop)                           (drop)

Structs

BlockRequest	Request for the block with the given height.
BlockResponse	Information about a block.
Connect	Connect to a node.
PeersRequest	Request connected peers from a node.
Precommit	Pre-commit for a proposal.
Prevote	Pre-vote for a new block.
PrevotesRequest	Request for pre-votes.
Propose	Proposal for a new block.
ProposeRequest	Request for the Propose.
RawTransaction	Transaction raw buffer. This struct is used to transfer transactions in network.
ServiceTransaction	Concrete raw transaction transaction inside TransactionSet. This type is used inside #[derive(TransactionSet)] to return raw transaction payload as part of service transaction set.
Signed	Wraps a Payload together with the corresponding SignedMessage.
Status	Current node status.
TransactionsRequest	Request for transactions by hash.
TransactionsResponse	Information about the transactions.

Enums

Consensus	Exonum consensus specific node messages.
Message	Composition of every exonum protocol messages. This messages used in network p2p communications.
Requests	Exonum node requests.
Responses	Exonum node responses.
Service	Exonum basic node messages.

Constants

PROTOCOL_MAJOR_VERSION	Version of the protocol. Different versions are incompatible.
RAW_TRANSACTION_EMPTY_SIZE	Signed<RawTransaction> size with empty transaction inside.

Traits

BinaryForm

Helper trait to define serialization format.

Functions

to_hex_string

Returns hexadecimal string representation of message.