Struct Message

pub struct Message {
    pub channel: u32,
    pub command: Command,
    pub sequence: u8,
    pub payload_len: usize,
    pub payload: Vec<u8>,
}

A complete CTAP2 message, which is built from one or many packets.

The initial packet is an InitPacket then multiple ContPacket are used to populate a large payload which is larger than the maximum packet size.

Fields

channel: u32

Channel Identifier. This is 4 bytes, but the endianness is not defined by the spec hence we will simply use the native endianness since its actual value is just important on the wire.

command: Command

Command identifier. This comes from the InitPacket.

sequence: u8

Total number of continuation packets used to create this message. Used for internal state.

payload_len: usize

Total Payload length. This is represented as a Big Endian u16 on the wire.

payload: Vec<u8>

Payload bytes.

Implementations

impl Message

pub fn new( channel: u32, command: Command, data: &[u8], ) -> Result<Self, CreationError>

Create a new message for the given channel of the given command type with the data payload.

pub fn send<W: Write>(self, writer: &mut W) -> Result<(), Error>

Send a message to the client by breaking it up into CTAP2 HID packets and sending them in sequence.

Trait Implementations

impl Debug for Message

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

Formats the value using the given formatter.