Struct tungstenite::protocol::frame::FrameHeader

pub struct FrameHeader {
    pub is_final: bool,
    pub rsv1: bool,
    pub rsv2: bool,
    pub rsv3: bool,
    pub opcode: OpCode,
    pub mask: Option<[u8; 4]>,
}

A struct representing a WebSocket frame header.

Fields

is_final: bool

Indicates that the frame is the last one of a possibly fragmented message.

rsv1: bool

Reserved for protocol extensions.

rsv2: bool

Reserved for protocol extensions.

rsv3: bool

Reserved for protocol extensions.

opcode: OpCode

WebSocket protocol opcode.

mask: Option<[u8; 4]>

A frame mask, if any.

Implementations

impl FrameHeader

pub fn parse(
    cursor: &mut Cursor<impl AsRef<[u8]>>
) -> Result<Option<(Self, u64)>>

Parse a header from an input stream. Returns None if insufficient data and does not consume anything in this case. Payload size is returned along with the header.

pub fn len(&self, length: u64) -> usize

Get the size of the header formatted with given payload length.

pub fn format(&self, length: u64, output: &mut impl Write) -> Result<()>

Format a header for given payload size.

Trait Implementations

impl Clone for FrameHeader

fn clone(&self) -> FrameHeader

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for FrameHeader

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

Formats the value using the given formatter.

impl Default for FrameHeader

fn default() -> Self

Returns the “default value” for a type.