Struct solana_program::message::MessageHeader

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.

Trait Implementations

impl Clone for MessageHeader

fn clone(&self) -> MessageHeader

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for MessageHeader

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

Formats the value using the given formatter.

impl Default for MessageHeader

fn default() -> MessageHeader

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for MessageHeader

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
    __D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.

impl PartialEq<MessageHeader> for MessageHeader

fn eq(&self, other: &MessageHeader) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &MessageHeader) -> bool

This method tests for !=.

impl Serialize for MessageHeader

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error> where
    __S: Serializer, 

Serialize this value into the given Serde serializer.

impl Eq for MessageHeader

impl StructuralEq for MessageHeader

impl StructuralPartialEq for MessageHeader