Struct solana_program::message::MessageHeader[][src]

pub struct MessageHeader {
    pub num_required_signatures: u8,
    pub num_readonly_signed_accounts: u8,
    pub num_readonly_unsigned_accounts: u8,
}

Fields

num_required_signatures: u8

The number of signatures required for this message to be considered valid. The signatures must match the first num_required_signatures of account_keys. NOTE: Serialization-related changes must be paired with the direct read at sigverify.

num_readonly_signed_accounts: u8

The last num_readonly_signed_accounts of the signed keys are read-only accounts. Programs may process multiple transactions that load read-only accounts within a single PoH entry, but are not permitted to credit or debit lamports or modify account data. Transactions targeting the same read-write account are evaluated sequentially.

num_readonly_unsigned_accounts: u8

The last num_readonly_unsigned_accounts of the unsigned keys are read-only accounts.

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