28 lines
1.1 KiB
Rust
28 lines
1.1 KiB
Rust
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//! A library for generating a message from a sequence of instructions
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mod legacy;
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mod v0;
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mod versions;
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pub use legacy::Message;
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pub const MESSAGE_HEADER_LENGTH: usize = 3;
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#[derive(Serialize, Deserialize, Default, Debug, PartialEq, Eq, Clone, AbiExample)]
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#[serde(rename_all = "camelCase")]
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pub struct MessageHeader {
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/// The number of signatures required for this message to be considered valid. The
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/// signatures must match the first `num_required_signatures` of `account_keys`.
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/// NOTE: Serialization-related changes must be paired with the direct read at sigverify.
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pub num_required_signatures: u8,
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/// The last num_readonly_signed_accounts of the signed keys are read-only accounts. Programs
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/// may process multiple transactions that load read-only accounts within a single PoH entry,
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/// but are not permitted to credit or debit lamports or modify account data. Transactions
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/// targeting the same read-write account are evaluated sequentially.
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pub num_readonly_signed_accounts: u8,
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/// The last num_readonly_unsigned_accounts of the unsigned keys are read-only accounts.
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pub num_readonly_unsigned_accounts: u8,
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}
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