Struct Message 

pub struct Message {
    pub num_required_signatures: u8,
    pub num_readonly_signed_accounts: u8,
    pub num_readonly_unsigned_accounts: u8,
    pub account_keys: Vec<[u8; 32]>,
    pub recent_blockhash: [u8; 32],
    pub instructions: Vec<CompiledInstruction>,
}

A Solana transaction message (legacy format).

Fields

num_required_signatures: u8

Number of required signatures.

num_readonly_signed_accounts: u8

Number of read-only signed accounts.

num_readonly_unsigned_accounts: u8

Number of read-only unsigned accounts.

account_keys: Vec<[u8; 32]>

All account keys referenced by the message.

recent_blockhash: [u8; 32]

Recent blockhash (32 bytes).

instructions: Vec<CompiledInstruction>

Compiled instructions.

Implementations

impl Message

pub fn new(instructions: &[Instruction], fee_payer: [u8; 32]) -> Self

Build a message from instructions and a fee payer.

Deduplicates accounts and sorts them per Solana’s rules:

1. Writable signers (fee payer first)
2. Read-only signers
3. Writable non-signers
4. Read-only non-signers

pub fn serialize(&self) -> Vec<u8>

Serialize the message to bytes for signing.

impl Message

pub fn deserialize(data: &[u8]) -> Result<Self, SignerError>

Deserialize a legacy message from wire-format bytes.

Trait Implementations

impl Clone for Message

fn clone(&self) -> Message

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Message

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.