pub fn parse(
        src: &mut BytesMut,
        server: bool,
        max_size: usize,
    ) -> Result<Option<(bool, OpCode, Option<BytesMut>)>, ProtocolError> {
        // try to parse ws frame metadata
        let (idx, finished, opcode, length, mask) =
            match Parser::parse_metadata(src, server, max_size)? {
                None => return Ok(None),
                Some(res) => res,
            };

        // not enough data
        if src.len() < idx + length {
            return Ok(None);
        }

        // remove prefix
        src.advance(idx);

        // no need for body
        if length == 0 {
            return Ok(Some((finished, opcode, None)));
        }

        let mut data = src.split_to(length);

        // control frames must have length <= 125
        match opcode {
            OpCode::Ping | OpCode::Pong if length > 125 => {
                return Err(ProtocolError::InvalidLength(length));
            }
            OpCode::Close if length > 125 => {
                debug!("Received close frame with payload length exceeding 125. Morphing to protocol close frame.");
                return Ok(Some((true, OpCode::Close, None)));
            }
            _ => {}
        }

        // unmask
        if let Some(mask) = mask {
            apply_mask(&mut data, mask);
        }

        Ok(Some((finished, opcode, Some(data))))
    }
/// Parse the input stream into a frame.
Parse the input stream into a frame.
Parse the input stream into a frame .
pub fn parse(
        src: &mut BytesMut,
        server: bool,
        max_size: usize,
    ) -> Result<Option<(bool, OpCode, Option<BytesMut>)>, ProtocolError> {
        // try to parse ws frame metadata
        let (idx, finished, opcode, length, mask) =
            match Parser::parse_metadata(src, server, max_size)? {
                None => return Ok(None),
                Some(res) => res,
            };
        // not enough data
        if src.len() < idx + length {
            return Ok(None);
        }
        // remove prefix
        src.advance(idx);
        // no need for body
        if length == 0 {
            return Ok(Some((finished, opcode, None)));
        }
        let mut data = src.split_to(length);
        // control frames must have length <= 125
        match opcode {
            OpCode::Ping | OpCode::Pong if length > 125 => {
                return Err(ProtocolError::InvalidLength(length));
            }
            OpCode::Close if length > 125 => {
                debug!("Received close frame with payload length exceeding 125. Morphing to protocol close frame.");
                return Ok(Some((true, OpCode::Close, None)));
            }
            _ => {}
        }
        // unmask
        if let Some(mask) = mask {
            apply_mask(&mut data, mask);
        }
        Ok(Some((finished, opcode, Some(data))))
    }
pub fn parse ( src : & mut BytesMut , server : bool , max_size : usize , ) -> Result < Option < ( bool , OpCode , Option < BytesMut > ) > , ProtocolError > { // try to parse ws frame metadata let ( idx , finished , opcode , length , mask ) = match Parser :: parse_metadata ( src , server , max_size ) ? { None => return Ok ( None ) , Some ( res ) => res , } ; // not enough data if src . len ( ) < idx + length { return Ok ( None ) ; } // remove prefix src . advance ( idx ) ; // no need for body if length == 0 { return Ok ( Some ( ( finished , opcode , None ) ) ) ; } let mut data = src . split_to ( length ) ; // control frames must have length <= 125 match opcode { OpCode :: Ping | OpCode :: Pong if length > 125 => { return Err ( ProtocolError :: InvalidLength ( length ) ) ; } OpCode :: Close if length > 125 => { debug ! ( " " ) ; return Ok ( Some ( ( true , OpCode :: Close , None ) ) ) ; } _ => { } } // unmask if let Some ( mask ) = mask { apply_mask ( & mut data , mask ) ; } Ok ( Some ( ( finished , opcode , Some ( data ) ) ) ) }
Parse the input stream into a frame.
Parse the input stream into a frame .
src
&mut BytesMut
server
bool
max_size
usize
src
&mut BytesMut
server
bool
max_size
usize