Struct 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(crate) const MAX_SIZE: usize = 14usize

The longest possible header is 14 bytes, which would represent a message sent from the client to the server with a payload greater than 64KB.

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.

pub(crate) fn set_random_mask(&mut self)

Generate a random frame mask and store this in the header.

Of course this does not change frame contents. It just generates a mask.

impl FrameHeader

fn parse_internal(cursor: &mut impl Read) -> Result<Option<(Self, u64)>>

Internal parse engine. Returns None if insufficient data. Payload size is returned along with the header.

Trait Implementations

impl Clone for FrameHeader

fn clone(&self) -> FrameHeader

Returns a duplicate of the value.

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.

impl PartialEq for FrameHeader

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for FrameHeader

impl StructuralPartialEq for FrameHeader