// frame_buf should be large enough to hold an entire websocket text frame
// this function will block until it has recieved a full websocket frame.
// It will wait until the last fragmented frame has arrived.
frame_buf should be large enough to hold an entire websocket text frame
this function will block until it has recieved a full websocket frame.
It will wait until the last fragmented frame has arrived.
frame_buf should be large enough to hold an entire websocket text frame this function will block until it has recieved a full websocket frame . It will wait until the last fragmented frame has arrived .
pub fn read<'b, E>(
        &mut self,
        stream: &mut impl Stream<E>,
        frame_buf: &'b mut [u8],
    ) -> Result<ReadResult<'b>, FramerError<E>> {
        loop {
            if *self.read_cursor == 0 || *self.read_cursor == self.read_len {
                self.read_len = stream.read(self.read_buf).map_err(FramerError::Io)?;
                *self.read_cursor = 0;
            }
            if self.read_len == 0 {
                return Ok(ReadResult::Closed);
            }
            loop {
                if *self.read_cursor == self.read_len {
                    break;
                }
                if self.frame_cursor == frame_buf.len() {
                    return Err(FramerError::FrameTooLarge(frame_buf.len()));
                }
                let ws_result = self
                    .websocket
                    .read(
                        &self.read_buf[*self.read_cursor..self.read_len],
                        &mut frame_buf[self.frame_cursor..],
                    )
                    .map_err(FramerError::WebSocket)?;
                *self.read_cursor += ws_result.len_from;
                match ws_result.message_type {
                    WebSocketReceiveMessageType::Binary => {
                        self.frame_cursor += ws_result.len_to;
                        if ws_result.end_of_message {
                            let frame = &frame_buf[..self.frame_cursor];
                            self.frame_cursor = 0;
                            return Ok(ReadResult::Binary(frame));
                        }
                    }
                    WebSocketReceiveMessageType::Text => {
                        self.frame_cursor += ws_result.len_to;
                        if ws_result.end_of_message {
                            let frame = &frame_buf[..self.frame_cursor];
                            self.frame_cursor = 0;
                            let text = core::str::from_utf8(frame).map_err(FramerError::Utf8)?;
                            return Ok(ReadResult::Text(text));
                        }
                    }
                    WebSocketReceiveMessageType::CloseMustReply => {
                        self.send_back(
                            stream,
                            frame_buf,
                            ws_result.len_to,
                            WebSocketSendMessageType::CloseReply,
                        )?;
                        return Ok(ReadResult::Closed);
                    }
                    WebSocketReceiveMessageType::CloseCompleted => return Ok(ReadResult::Closed),
                    WebSocketReceiveMessageType::Ping => {
                        self.send_back(
                            stream,
                            frame_buf,
                            ws_result.len_to,
                            WebSocketSendMessageType::Pong,
                        )?;
                    }
                    WebSocketReceiveMessageType::Pong => {
                        let bytes =
                            &frame_buf[self.frame_cursor..self.frame_cursor + ws_result.len_to];
                        return Ok(ReadResult::Pong(bytes));
                    }
                }
            }
        }
    }
pub fn read < ' b , E > ( & mut self , stream : & mut impl Stream < E > , frame_buf : & ' b mut [ u8 ] , ) -> Result < ReadResult < ' b > , FramerError < E > > { loop { if * self . read_cursor == 0 || * self . read_cursor == self . read_len { self . read_len = stream . read ( self . read_buf ) . map_err ( FramerError :: Io ) ? ; * self . read_cursor = 0 ; } if self . read_len == 0 { return Ok ( ReadResult :: Closed ) ; } loop { if * self . read_cursor == self . read_len { break ; } if self . frame_cursor == frame_buf . len ( ) { return Err ( FramerError :: FrameTooLarge ( frame_buf . len ( ) ) ) ; } let ws_result = self . websocket . read ( & self . read_buf [ * self . read_cursor .. self . read_len ] , & mut frame_buf [ self . frame_cursor .. ] , ) . map_err ( FramerError :: WebSocket ) ? ; * self . read_cursor += ws_result . len_from ; match ws_result . message_type { WebSocketReceiveMessageType :: Binary => { self . frame_cursor += ws_result . len_to ; if ws_result . end_of_message { let frame = & frame_buf [ .. self . frame_cursor ] ; self . frame_cursor = 0 ; return Ok ( ReadResult :: Binary ( frame ) ) ; } } WebSocketReceiveMessageType :: Text => { self . frame_cursor += ws_result . len_to ; if ws_result . end_of_message { let frame = & frame_buf [ .. self . frame_cursor ] ; self . frame_cursor = 0 ; let text = core :: str :: from_utf8 ( frame ) . map_err ( FramerError :: Utf8 ) ? ; return Ok ( ReadResult :: Text ( text ) ) ; } } WebSocketReceiveMessageType :: CloseMustReply => { self . send_back ( stream , frame_buf , ws_result . len_to , WebSocketSendMessageType :: CloseReply , ) ? ; return Ok ( ReadResult :: Closed ) ; } WebSocketReceiveMessageType :: CloseCompleted => return Ok ( ReadResult :: Closed ) , WebSocketReceiveMessageType :: Ping => { self . send_back ( stream , frame_buf , ws_result . len_to , WebSocketSendMessageType :: Pong , ) ? ; } WebSocketReceiveMessageType :: Pong => { let bytes = & frame_buf [ self . frame_cursor .. self . frame_cursor + ws_result . len_to ] ; return Ok ( ReadResult :: Pong ( bytes ) ) ; } } } } }
frame_buf should be large enough to hold an entire websocket text frame
this function will block until it has recieved a full websocket frame.
frame_buf should be large enough to hold an entire websocket text frame this function will block until it has recieved a full websocket frame .
&mut self
stream
&mut impl Stream<E>
frame_buf
&'b mut [u8]