pub struct ReadFrame(_);Expand description
owned read framed, usually from read frame from stream
Implementations§
source§impl ReadFrame
impl ReadFrame
sourcepub fn new<'a, P: Into<PayloadMut<'a>>>(
fin: bool,
rsv1: bool,
rsv2: bool,
rsv3: bool,
opcode: OpCode,
mask: bool,
payload: P
) -> Self
pub fn new<'a, P: Into<PayloadMut<'a>>>(
fin: bool,
rsv1: bool,
rsv2: bool,
rsv3: bool,
opcode: OpCode,
mask: bool,
payload: P
) -> Self
construct read frame
sourcepub fn empty(opcdoe: OpCode) -> Self
pub fn empty(opcdoe: OpCode) -> Self
construct empty payload frame
Examples found in repository?
src/codec/frame/mod.rs (line 103)
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fn default() -> Self {
Self {
config: FrameConfig::default(),
fragmented: false,
read_idx: 0,
read_data: BytesMut::new(),
fragmented_data: ReadFrame::empty(OpCode::Binary),
fragmented_type: OpCode::default(),
}
}
}
impl FrameReadState {
/// construct with config and bytes remaining in handshake
pub fn with_remain(config: FrameConfig, read_data: BytesMut) -> Self {
Self {
config,
read_idx: read_data.len(),
read_data,
..Self::default()
}
}
/// construct with config
pub fn with_config(config: FrameConfig) -> Self {
Self {
config,
..Self::default()
}
}
/// check if data in buffer is enough to parse frame header
pub fn is_header_ok(&self) -> bool {
let buf_len = self.read_data.len();
if buf_len < 2 {
false
} else {
let mut len = self.read_data[1];
len = (len << 1) >> 1;
let mask = get_bit(&self.read_data, 1, 0);
let mut min_len = match len {
0..=125 => 2,
126 => 4,
127 => 10,
_ => unreachable!(),
};
if mask {
min_len += 4;
}
buf_len >= min_len
}
}
/// return current frame header bits of buffer
pub fn get_leading_bits(&self) -> u8 {
self.read_data[0] >> 4
}
/// try to parse frame header in buffer, return expected payload
pub fn parse_frame_header(&mut self) -> Result<usize, WsError> {
fn parse_payload_len(source: &[u8]) -> Result<(usize, usize), ProtocolError> {
let mut len = source[1];
len = (len << 1) >> 1;
match len {
0..=125 => Ok((1, len as usize)),
126 => {
if source.len() < 4 {
return Err(ProtocolError::InsufficientLen(source.len()));
}
let mut arr = [0u8; 2];
arr[0] = source[2];
arr[1] = source[3];
Ok((1 + 2, u16::from_be_bytes(arr) as usize))
}
127 => {
if source.len() < 10 {
return Err(ProtocolError::InsufficientLen(source.len()));
}
let mut arr = [0u8; 8];
arr[..8].copy_from_slice(&source[2..(8 + 2)]);
Ok((1 + 8, usize::from_be_bytes(arr)))
}
_ => Err(ProtocolError::InvalidLeadingLen(len)),
}
}
// TODO check nonzero value according to extension negotiation
let leading_bits = self.get_leading_bits();
if self.config.check_rsv && !(leading_bits == 0b00001000 || leading_bits == 0b00000000) {
return Err(WsError::ProtocolError {
close_code: 1008,
error: ProtocolError::InvalidLeadingBits(leading_bits),
});
}
parse_opcode(self.read_data[0]).map_err(|e| WsError::ProtocolError {
error: ProtocolError::InvalidOpcode(e),
close_code: 1008,
})?;
let (len_occ_bytes, payload_len) =
parse_payload_len(&self.read_data).map_err(|e| WsError::ProtocolError {
close_code: 1008,
error: e,
})?;
let max_payload_size = self.config.max_frame_payload_size;
if max_payload_size > 0 && payload_len > max_payload_size {
return Err(WsError::ProtocolError {
close_code: 1008,
error: ProtocolError::PayloadTooLarge(max_payload_size),
});
}
let mut expected_len = 1 + len_occ_bytes + payload_len;
let mask = get_bit(&self.read_data, 1, 0);
if mask {
expected_len += 4;
};
Ok(expected_len)
}
/// get a frame and reset state
pub fn consume_frame(&mut self, len: usize) -> ReadFrame {
let data = self.read_data.split_to(len);
self.read_idx = self.read_data.len();
let mut frame = ReadFrame(data);
if let Some(key) = frame.header().masking_key() {
if self.config.auto_unmask {
apply_mask_fast32(frame.payload_mut(), key);
}
}
frame
}
/// perform protocol checking after receiving a frame
pub fn check_frame(&mut self, unmasked_frame: ReadFrame) -> Result<Option<ReadFrame>, WsError> {
let header = unmasked_frame.header();
let opcode = header.opcode();
match opcode {
OpCode::Continue => {
if !self.fragmented {
return Err(WsError::ProtocolError {
close_code: 1002,
error: ProtocolError::MissInitialFragmentedFrame,
});
}
let (header_len, _) = header.payload_idx();
let fin = header.fin();
let mut buf = unmasked_frame.0;
buf.advance(header_len);
self.fragmented_data.0.unsplit(buf);
if fin {
// if String::from_utf8(fragmented_data.to_vec()).is_err() {
// return Err(WsError::ProtocolError {
// close_code: 1007,
// error: ProtocolError::InvalidUtf8,
// });
// }
let completed_frame = self
.fragmented_data
.replace(ReadFrame::empty(OpCode::Binary));
Ok(Some(completed_frame))
} else {
Ok(None)
}
}
OpCode::Text | OpCode::Binary => {
if self.fragmented {
return Err(WsError::ProtocolError {
close_code: 1002,
error: ProtocolError::NotContinueFrameAfterFragmented,
});
}
if !header.fin() {
self.fragmented = true;
self.fragmented_type = opcode.clone();
self.fragmented_data.header_mut().set_opcode(opcode);
let header_len = header.payload_idx().0;
let mut buf = unmasked_frame.0;
buf.advance(header_len);
self.fragmented_data.0.unsplit(buf);
Ok(None)
} else {
// if opcode == OpCode::Text
// && String::from_utf8(frame.payload_data_unmask().to_vec()).is_err()
// {
// return Err(WsError::ProtocolError {
// close_code: 1007,
// error: ProtocolError::InvalidUtf8,
// });
// }
Ok(Some(unmasked_frame))
}
}
OpCode::Close | OpCode::Ping | OpCode::Pong => {
if !header.fin() {
return Err(WsError::ProtocolError {
close_code: 1002,
error: ProtocolError::FragmentedControlFrame,
});
}
let payload_len = header.payload_len();
if payload_len > 125 {
let error = ProtocolError::ControlFrameTooBig(payload_len as usize);
return Err(WsError::ProtocolError {
close_code: 1002,
error,
});
}
if opcode == OpCode::Close {
if payload_len == 1 {
let error = ProtocolError::InvalidCloseFramePayload;
return Err(WsError::ProtocolError {
close_code: 1002,
error,
});
}
if payload_len >= 2 {
let payload = unmasked_frame.payload();
// check close code
let mut code_byte = [0u8; 2];
code_byte.copy_from_slice(&payload[..2]);
let code = u16::from_be_bytes(code_byte);
if code < 1000
|| (1004..=1006).contains(&code)
|| (1015..=2999).contains(&code)
|| code >= 5000
{
let error = ProtocolError::InvalidCloseCode(code);
return Err(WsError::ProtocolError {
close_code: 1002,
error,
});
}
// utf-8 validation
if String::from_utf8(payload[2..].to_vec()).is_err() {
let error = ProtocolError::InvalidUtf8;
return Err(WsError::ProtocolError {
close_code: 1007,
error,
});
}
}
}
Ok(Some(unmasked_frame))
}
OpCode::ReservedNonControl | OpCode::ReservedControl => {
Err(WsError::UnsupportedFrame(opcode))
}
}
}sourcepub fn replace(&mut self, other: ReadFrame) -> ReadFrame
pub fn replace(&mut self, other: ReadFrame) -> ReadFrame
replace old frame with other buf and return it
Examples found in repository?
src/codec/frame/mod.rs (line 255)
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pub fn check_frame(&mut self, unmasked_frame: ReadFrame) -> Result<Option<ReadFrame>, WsError> {
let header = unmasked_frame.header();
let opcode = header.opcode();
match opcode {
OpCode::Continue => {
if !self.fragmented {
return Err(WsError::ProtocolError {
close_code: 1002,
error: ProtocolError::MissInitialFragmentedFrame,
});
}
let (header_len, _) = header.payload_idx();
let fin = header.fin();
let mut buf = unmasked_frame.0;
buf.advance(header_len);
self.fragmented_data.0.unsplit(buf);
if fin {
// if String::from_utf8(fragmented_data.to_vec()).is_err() {
// return Err(WsError::ProtocolError {
// close_code: 1007,
// error: ProtocolError::InvalidUtf8,
// });
// }
let completed_frame = self
.fragmented_data
.replace(ReadFrame::empty(OpCode::Binary));
Ok(Some(completed_frame))
} else {
Ok(None)
}
}
OpCode::Text | OpCode::Binary => {
if self.fragmented {
return Err(WsError::ProtocolError {
close_code: 1002,
error: ProtocolError::NotContinueFrameAfterFragmented,
});
}
if !header.fin() {
self.fragmented = true;
self.fragmented_type = opcode.clone();
self.fragmented_data.header_mut().set_opcode(opcode);
let header_len = header.payload_idx().0;
let mut buf = unmasked_frame.0;
buf.advance(header_len);
self.fragmented_data.0.unsplit(buf);
Ok(None)
} else {
// if opcode == OpCode::Text
// && String::from_utf8(frame.payload_data_unmask().to_vec()).is_err()
// {
// return Err(WsError::ProtocolError {
// close_code: 1007,
// error: ProtocolError::InvalidUtf8,
// });
// }
Ok(Some(unmasked_frame))
}
}
OpCode::Close | OpCode::Ping | OpCode::Pong => {
if !header.fin() {
return Err(WsError::ProtocolError {
close_code: 1002,
error: ProtocolError::FragmentedControlFrame,
});
}
let payload_len = header.payload_len();
if payload_len > 125 {
let error = ProtocolError::ControlFrameTooBig(payload_len as usize);
return Err(WsError::ProtocolError {
close_code: 1002,
error,
});
}
if opcode == OpCode::Close {
if payload_len == 1 {
let error = ProtocolError::InvalidCloseFramePayload;
return Err(WsError::ProtocolError {
close_code: 1002,
error,
});
}
if payload_len >= 2 {
let payload = unmasked_frame.payload();
// check close code
let mut code_byte = [0u8; 2];
code_byte.copy_from_slice(&payload[..2]);
let code = u16::from_be_bytes(code_byte);
if code < 1000
|| (1004..=1006).contains(&code)
|| (1015..=2999).contains(&code)
|| code >= 5000
{
let error = ProtocolError::InvalidCloseCode(code);
return Err(WsError::ProtocolError {
close_code: 1002,
error,
});
}
// utf-8 validation
if String::from_utf8(payload[2..].to_vec()).is_err() {
let error = ProtocolError::InvalidUtf8;
return Err(WsError::ProtocolError {
close_code: 1007,
error,
});
}
}
}
Ok(Some(unmasked_frame))
}
OpCode::ReservedNonControl | OpCode::ReservedControl => {
Err(WsError::UnsupportedFrame(opcode))
}
}
}sourcepub fn header(&self) -> HeaderView<'_>
pub fn header(&self) -> HeaderView<'_>
readonly header view of frame
Examples found in repository?
More examples
src/frame.rs (line 477)
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pub fn replace(&mut self, other: ReadFrame) -> ReadFrame {
let frame_len = self.header().payload_idx().1;
let ret = ReadFrame(self.0.split_to(frame_len));
self.0.extend_from_slice(&other.0);
ret
}
/// readonly header view of frame
pub fn header(&self) -> HeaderView {
HeaderView(&self.0)
}
/// mutable header view of frame
pub fn header_mut(&mut self) -> HeaderViewMut {
HeaderViewMut(&mut self.0)
}
/// immutable frame payload
pub fn payload(&self) -> &[u8] {
let (start, end) = self.header().payload_idx();
&self.0[start..end]
}
/// consume frame and return (header, payload)
pub fn split(mut self) -> (Header, BytesMut) {
let stop = self.header().payload_idx().0;
let header = Header(self.0.split_to(stop));
(header, self.0)
}
/// mutable reference of payload
pub fn payload_mut(&mut self) -> &mut [u8] {
let (start, end) = self.header().payload_idx();
&mut self.0[start..end]
}src/codec/frame/mod.rs (line 221)
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pub fn consume_frame(&mut self, len: usize) -> ReadFrame {
let data = self.read_data.split_to(len);
self.read_idx = self.read_data.len();
let mut frame = ReadFrame(data);
if let Some(key) = frame.header().masking_key() {
if self.config.auto_unmask {
apply_mask_fast32(frame.payload_mut(), key);
}
}
frame
}
/// perform protocol checking after receiving a frame
pub fn check_frame(&mut self, unmasked_frame: ReadFrame) -> Result<Option<ReadFrame>, WsError> {
let header = unmasked_frame.header();
let opcode = header.opcode();
match opcode {
OpCode::Continue => {
if !self.fragmented {
return Err(WsError::ProtocolError {
close_code: 1002,
error: ProtocolError::MissInitialFragmentedFrame,
});
}
let (header_len, _) = header.payload_idx();
let fin = header.fin();
let mut buf = unmasked_frame.0;
buf.advance(header_len);
self.fragmented_data.0.unsplit(buf);
if fin {
// if String::from_utf8(fragmented_data.to_vec()).is_err() {
// return Err(WsError::ProtocolError {
// close_code: 1007,
// error: ProtocolError::InvalidUtf8,
// });
// }
let completed_frame = self
.fragmented_data
.replace(ReadFrame::empty(OpCode::Binary));
Ok(Some(completed_frame))
} else {
Ok(None)
}
}
OpCode::Text | OpCode::Binary => {
if self.fragmented {
return Err(WsError::ProtocolError {
close_code: 1002,
error: ProtocolError::NotContinueFrameAfterFragmented,
});
}
if !header.fin() {
self.fragmented = true;
self.fragmented_type = opcode.clone();
self.fragmented_data.header_mut().set_opcode(opcode);
let header_len = header.payload_idx().0;
let mut buf = unmasked_frame.0;
buf.advance(header_len);
self.fragmented_data.0.unsplit(buf);
Ok(None)
} else {
// if opcode == OpCode::Text
// && String::from_utf8(frame.payload_data_unmask().to_vec()).is_err()
// {
// return Err(WsError::ProtocolError {
// close_code: 1007,
// error: ProtocolError::InvalidUtf8,
// });
// }
Ok(Some(unmasked_frame))
}
}
OpCode::Close | OpCode::Ping | OpCode::Pong => {
if !header.fin() {
return Err(WsError::ProtocolError {
close_code: 1002,
error: ProtocolError::FragmentedControlFrame,
});
}
let payload_len = header.payload_len();
if payload_len > 125 {
let error = ProtocolError::ControlFrameTooBig(payload_len as usize);
return Err(WsError::ProtocolError {
close_code: 1002,
error,
});
}
if opcode == OpCode::Close {
if payload_len == 1 {
let error = ProtocolError::InvalidCloseFramePayload;
return Err(WsError::ProtocolError {
close_code: 1002,
error,
});
}
if payload_len >= 2 {
let payload = unmasked_frame.payload();
// check close code
let mut code_byte = [0u8; 2];
code_byte.copy_from_slice(&payload[..2]);
let code = u16::from_be_bytes(code_byte);
if code < 1000
|| (1004..=1006).contains(&code)
|| (1015..=2999).contains(&code)
|| code >= 5000
{
let error = ProtocolError::InvalidCloseCode(code);
return Err(WsError::ProtocolError {
close_code: 1002,
error,
});
}
// utf-8 validation
if String::from_utf8(payload[2..].to_vec()).is_err() {
let error = ProtocolError::InvalidUtf8;
return Err(WsError::ProtocolError {
close_code: 1007,
error,
});
}
}
}
Ok(Some(unmasked_frame))
}
OpCode::ReservedNonControl | OpCode::ReservedControl => {
Err(WsError::UnsupportedFrame(opcode))
}
}
}sourcepub fn header_mut(&mut self) -> HeaderViewMut<'_>
pub fn header_mut(&mut self) -> HeaderViewMut<'_>
mutable header view of frame
Examples found in repository?
src/frame.rs (line 461)
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pub fn new<'a, P: Into<PayloadMut<'a>>>(
fin: bool,
rsv1: bool,
rsv2: bool,
rsv3: bool,
opcode: OpCode,
mask: bool,
payload: P,
) -> Self {
let mut payload: PayloadMut = payload.into();
let payload_len = payload.len();
let mut buf =
HeaderViewMut::empty_payload(fin, rsv1, rsv2, rsv3, opcode, mask, payload_len);
let start = buf.len();
let end = start + payload_len;
buf.resize(end, 0);
let mut frame = ReadFrame(buf);
let header = frame.header_mut();
if mask {
let key = header.masking_key().unwrap();
payload.apply_mask(key);
}
payload.copy_to(&mut frame.0[start..end]);
frame
}More examples
src/codec/frame/mod.rs (line 271)
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pub fn check_frame(&mut self, unmasked_frame: ReadFrame) -> Result<Option<ReadFrame>, WsError> {
let header = unmasked_frame.header();
let opcode = header.opcode();
match opcode {
OpCode::Continue => {
if !self.fragmented {
return Err(WsError::ProtocolError {
close_code: 1002,
error: ProtocolError::MissInitialFragmentedFrame,
});
}
let (header_len, _) = header.payload_idx();
let fin = header.fin();
let mut buf = unmasked_frame.0;
buf.advance(header_len);
self.fragmented_data.0.unsplit(buf);
if fin {
// if String::from_utf8(fragmented_data.to_vec()).is_err() {
// return Err(WsError::ProtocolError {
// close_code: 1007,
// error: ProtocolError::InvalidUtf8,
// });
// }
let completed_frame = self
.fragmented_data
.replace(ReadFrame::empty(OpCode::Binary));
Ok(Some(completed_frame))
} else {
Ok(None)
}
}
OpCode::Text | OpCode::Binary => {
if self.fragmented {
return Err(WsError::ProtocolError {
close_code: 1002,
error: ProtocolError::NotContinueFrameAfterFragmented,
});
}
if !header.fin() {
self.fragmented = true;
self.fragmented_type = opcode.clone();
self.fragmented_data.header_mut().set_opcode(opcode);
let header_len = header.payload_idx().0;
let mut buf = unmasked_frame.0;
buf.advance(header_len);
self.fragmented_data.0.unsplit(buf);
Ok(None)
} else {
// if opcode == OpCode::Text
// && String::from_utf8(frame.payload_data_unmask().to_vec()).is_err()
// {
// return Err(WsError::ProtocolError {
// close_code: 1007,
// error: ProtocolError::InvalidUtf8,
// });
// }
Ok(Some(unmasked_frame))
}
}
OpCode::Close | OpCode::Ping | OpCode::Pong => {
if !header.fin() {
return Err(WsError::ProtocolError {
close_code: 1002,
error: ProtocolError::FragmentedControlFrame,
});
}
let payload_len = header.payload_len();
if payload_len > 125 {
let error = ProtocolError::ControlFrameTooBig(payload_len as usize);
return Err(WsError::ProtocolError {
close_code: 1002,
error,
});
}
if opcode == OpCode::Close {
if payload_len == 1 {
let error = ProtocolError::InvalidCloseFramePayload;
return Err(WsError::ProtocolError {
close_code: 1002,
error,
});
}
if payload_len >= 2 {
let payload = unmasked_frame.payload();
// check close code
let mut code_byte = [0u8; 2];
code_byte.copy_from_slice(&payload[..2]);
let code = u16::from_be_bytes(code_byte);
if code < 1000
|| (1004..=1006).contains(&code)
|| (1015..=2999).contains(&code)
|| code >= 5000
{
let error = ProtocolError::InvalidCloseCode(code);
return Err(WsError::ProtocolError {
close_code: 1002,
error,
});
}
// utf-8 validation
if String::from_utf8(payload[2..].to_vec()).is_err() {
let error = ProtocolError::InvalidUtf8;
return Err(WsError::ProtocolError {
close_code: 1007,
error,
});
}
}
}
Ok(Some(unmasked_frame))
}
OpCode::ReservedNonControl | OpCode::ReservedControl => {
Err(WsError::UnsupportedFrame(opcode))
}
}
}sourcepub fn payload(&self) -> &[u8] ⓘ
pub fn payload(&self) -> &[u8] ⓘ
immutable frame payload
Examples found in repository?
src/codec/frame/mod.rs (line 313)
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pub fn check_frame(&mut self, unmasked_frame: ReadFrame) -> Result<Option<ReadFrame>, WsError> {
let header = unmasked_frame.header();
let opcode = header.opcode();
match opcode {
OpCode::Continue => {
if !self.fragmented {
return Err(WsError::ProtocolError {
close_code: 1002,
error: ProtocolError::MissInitialFragmentedFrame,
});
}
let (header_len, _) = header.payload_idx();
let fin = header.fin();
let mut buf = unmasked_frame.0;
buf.advance(header_len);
self.fragmented_data.0.unsplit(buf);
if fin {
// if String::from_utf8(fragmented_data.to_vec()).is_err() {
// return Err(WsError::ProtocolError {
// close_code: 1007,
// error: ProtocolError::InvalidUtf8,
// });
// }
let completed_frame = self
.fragmented_data
.replace(ReadFrame::empty(OpCode::Binary));
Ok(Some(completed_frame))
} else {
Ok(None)
}
}
OpCode::Text | OpCode::Binary => {
if self.fragmented {
return Err(WsError::ProtocolError {
close_code: 1002,
error: ProtocolError::NotContinueFrameAfterFragmented,
});
}
if !header.fin() {
self.fragmented = true;
self.fragmented_type = opcode.clone();
self.fragmented_data.header_mut().set_opcode(opcode);
let header_len = header.payload_idx().0;
let mut buf = unmasked_frame.0;
buf.advance(header_len);
self.fragmented_data.0.unsplit(buf);
Ok(None)
} else {
// if opcode == OpCode::Text
// && String::from_utf8(frame.payload_data_unmask().to_vec()).is_err()
// {
// return Err(WsError::ProtocolError {
// close_code: 1007,
// error: ProtocolError::InvalidUtf8,
// });
// }
Ok(Some(unmasked_frame))
}
}
OpCode::Close | OpCode::Ping | OpCode::Pong => {
if !header.fin() {
return Err(WsError::ProtocolError {
close_code: 1002,
error: ProtocolError::FragmentedControlFrame,
});
}
let payload_len = header.payload_len();
if payload_len > 125 {
let error = ProtocolError::ControlFrameTooBig(payload_len as usize);
return Err(WsError::ProtocolError {
close_code: 1002,
error,
});
}
if opcode == OpCode::Close {
if payload_len == 1 {
let error = ProtocolError::InvalidCloseFramePayload;
return Err(WsError::ProtocolError {
close_code: 1002,
error,
});
}
if payload_len >= 2 {
let payload = unmasked_frame.payload();
// check close code
let mut code_byte = [0u8; 2];
code_byte.copy_from_slice(&payload[..2]);
let code = u16::from_be_bytes(code_byte);
if code < 1000
|| (1004..=1006).contains(&code)
|| (1015..=2999).contains(&code)
|| code >= 5000
{
let error = ProtocolError::InvalidCloseCode(code);
return Err(WsError::ProtocolError {
close_code: 1002,
error,
});
}
// utf-8 validation
if String::from_utf8(payload[2..].to_vec()).is_err() {
let error = ProtocolError::InvalidUtf8;
return Err(WsError::ProtocolError {
close_code: 1007,
error,
});
}
}
}
Ok(Some(unmasked_frame))
}
OpCode::ReservedNonControl | OpCode::ReservedControl => {
Err(WsError::UnsupportedFrame(opcode))
}
}
}sourcepub fn payload_mut(&mut self) -> &mut [u8] ⓘ
pub fn payload_mut(&mut self) -> &mut [u8] ⓘ
mutable reference of payload