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refactor ws frame parser

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This commit is contained in:
Nikolay Kim 2018-02-26 13:58:23 -08:00
parent 56ae565688
commit 644f1a9518
11 changed files with 304 additions and 310 deletions
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1
Cargo.toml
View file

@ -77,7 +77,6 @@ tokio-tls = { version="0.1", optional = true }
openssl = { version="0.10", optional = true }
tokio-openssl = { version="0.2", optional = true }
backtrace="*"
[dependencies.actix]
version = "0.5"

6
src/client/parser.rs
View file

@ -151,7 +151,9 @@ impl HttpResponseParser {
}
}
let decoder = if let Some(len) = hdrs.get(header::CONTENT_LENGTH) {
let decoder = if status == StatusCode::SWITCHING_PROTOCOLS {
Some(Decoder::eof())
} else if let Some(len) = hdrs.get(header::CONTENT_LENGTH) {
// Content-Length
if let Ok(s) = len.to_str() {
if let Ok(len) = s.parse::<u64>() {
@ -167,8 +169,6 @@ impl HttpResponseParser {
} else if chunked(&hdrs)? {
// Chunked encoding
Some(Decoder::chunked())
} else if hdrs.contains_key(header::UPGRADE) {
Some(Decoder::eof())
} else {
None
};

30
src/error.rs
View file

@ -236,8 +236,6 @@ pub enum PayloadError {
impl From<IoError> for PayloadError {
fn from(err: IoError) -> PayloadError {
use backtrace;
println!("IO ERROR {:?}", backtrace::Backtrace::new());
PayloadError::Io(err)
}
}
@ -391,6 +389,34 @@ impl ResponseError for WsHandshakeError {
}
}
/// Websocket errors
#[derive(Fail, Debug)]
pub enum WsError {
/// Received an unmasked frame from client
#[fail(display="Received an unmasked frame from client")]
UnmaskedFrame,
/// Received a masked frame from server
#[fail(display="Received a masked frame from server")]
MaskedFrame,
/// Encountered invalid opcode
#[fail(display="Invalid opcode: {}", _0)]
InvalidOpcode(u8),
/// Invalid control frame length
#[fail(display="Invalid control frame length: {}", _0)]
InvalidLength(usize),
/// Payload error
#[fail(display="Payload error: {}", _0)]
Payload(#[cause] PayloadError),
}
impl ResponseError for WsError {}
impl From<PayloadError> for WsError {
fn from(err: PayloadError) -> WsError {
WsError::Payload(err)
}
}
/// A set of errors that can occur during parsing urlencoded payloads
#[derive(Fail, Debug)]
pub enum UrlencodedError {

1
src/handler.rs
View file

@ -395,7 +395,6 @@ impl<S> Handler<S> for NormalizePath {
}
}
} else if p.ends_with('/') {
println!("=== {:?}", p);
// try to remove trailing slash
let p = p.as_ref().trim_right_matches('/');
if router.has_route(p) {

6
src/lib.rs
View file

@ -32,7 +32,7 @@
//! * Supported *HTTP/1.x* and *HTTP/2.0* protocols
//! * Streaming and pipelining
//! * Keep-alive and slow requests handling
//! * WebSockets server/client
//! * *WebSockets* server/client
//! * Transparent content compression/decompression (br, gzip, deflate)
//! * Configurable request routing
//! * Multipart streams
@ -44,7 +44,7 @@
specialization, // for impl ErrorResponse for std::error::Error
))]
#![cfg_attr(feature = "cargo-clippy", allow(
decimal_literal_representation,))]
decimal_literal_representation,suspicious_arithmetic_impl,))]
#[macro_use]
extern crate log;
@ -97,8 +97,6 @@ extern crate openssl;
#[cfg(feature="openssl")]
extern crate tokio_openssl;
extern crate backtrace;
mod application;
mod body;
mod context;

4
src/multipart.rs
View file

@ -492,10 +492,10 @@ impl<S> InnerField<S> where S: Stream<Item=Bytes, Error=PayloadError> {
if &chunk[..2] == b"\r\n" && &chunk[2..4] == b"--" &&
&chunk[4..] == boundary.as_bytes()
{
payload.unread_data(chunk);
payload.unread_data(chunk.freeze());
Ok(Async::Ready(None))
} else {
Ok(Async::Ready(Some(chunk)))
Ok(Async::Ready(Some(chunk.freeze())))
}
}
}

35
src/payload.rs
View file

@ -297,9 +297,9 @@ impl Inner {
buf.extend_from_slice(&chunk.split_to(rem));
if !chunk.is_empty() {
self.items.push_front(chunk);
return Ok(Async::Ready(buf.freeze()))
}
}
return Ok(Async::Ready(buf.freeze()))
}
if let Some(err) = self.err.take() {
@ -423,7 +423,7 @@ impl<S> PayloadHelper<S> where S: Stream<Item=Bytes, Error=PayloadError> {
PayloadHelper {
len: 0,
items: VecDeque::new(),
stream: stream,
stream,
}
}
@ -445,6 +445,10 @@ impl<S> PayloadHelper<S> where S: Stream<Item=Bytes, Error=PayloadError> {
self.len
}
pub fn is_empty(&self) -> bool {
self.len() == 0
}
pub fn readany(&mut self) -> Poll<Option<Bytes>, PayloadError> {
if let Some(data) = self.items.pop_front() {
self.len -= data.len();
@ -458,7 +462,7 @@ impl<S> PayloadHelper<S> where S: Stream<Item=Bytes, Error=PayloadError> {
}
}
pub fn readexactly(&mut self, size: usize) -> Poll<Option<Bytes>, PayloadError> {
pub fn readexactly(&mut self, size: usize) -> Poll<Option<BytesMut>, PayloadError> {
if size <= self.len {
let mut buf = BytesMut::with_capacity(size);
while buf.len() < size {
@ -468,13 +472,34 @@ impl<S> PayloadHelper<S> where S: Stream<Item=Bytes, Error=PayloadError> {
buf.extend_from_slice(&chunk.split_to(rem));
if !chunk.is_empty() {
self.items.push_front(chunk);
return Ok(Async::Ready(Some(buf.freeze())))
}
}
return Ok(Async::Ready(Some(buf)))
}
match self.poll_stream()? {
Async::Ready(true) => self.readexactly(size),
Async::Ready(false) => Ok(Async::Ready(None)),
Async::NotReady => Ok(Async::NotReady),
}
}
pub fn copy(&mut self, size: usize) -> Poll<Option<BytesMut>, PayloadError> {
if size <= self.len {
let mut buf = BytesMut::with_capacity(size);
for chunk in &self.items {
if buf.len() < size {
let rem = cmp::min(size - buf.len(), chunk.len());
buf.extend_from_slice(&chunk[..rem]);
}
if buf.len() == size {
return Ok(Async::Ready(Some(buf)))
}
}
}
match self.poll_stream()? {
Async::Ready(true) => self.readexactly(size),
Async::Ready(true) => self.copy(size),
Async::Ready(false) => Ok(Async::Ready(None)),
Async::NotReady => Ok(Async::NotReady),
}

242
src/ws/client.rs
View file

@ -8,24 +8,28 @@ use std::cell::UnsafeCell;
use base64;
use rand;
use cookie::Cookie;
use bytes::BytesMut;
use bytes::{Bytes, BytesMut};
use http::{HttpTryFrom, StatusCode, Error as HttpError};
use http::header::{self, HeaderName, HeaderValue};
use sha1::Sha1;
use futures::{Async, Future, Poll, Stream};
use futures::future::{Either, err as FutErr};
use futures::unsync::mpsc::{unbounded, UnboundedSender};
use tokio_core::net::TcpStream;
use byteorder::{ByteOrder, NetworkEndian};
use actix::prelude::*;
use body::Binary;
use error::UrlParseError;
use body::{Body, Binary};
use error::{WsError, UrlParseError};
use payload::PayloadHelper;
use server::shared::SharedBytes;
use server::{utils, IoStream};
use client::{ClientRequest, ClientRequestBuilder,
use client::{ClientRequest, ClientRequestBuilder, ClientResponse,
HttpResponseParser, HttpResponseParserError, HttpClientWriter};
use client::{Connect, Connection, ClientConnector, ClientConnectorError};
use client::{Connect, Connection, ClientConnector, ClientConnectorError,
SendRequest, SendRequestError};
use super::Message;
use super::frame::Frame;
@ -52,7 +56,9 @@ pub enum WsClientError {
#[fail(display="Response parsing error")]
ResponseParseError(HttpResponseParserError),
#[fail(display="{}", _0)]
Connector(ClientConnectorError),
SendRequest(SendRequestError),
#[fail(display="{}", _0)]
Protocol(#[cause] WsError),
#[fail(display="{}", _0)]
Io(io::Error),
#[fail(display="Disconnected")]
@ -71,9 +77,15 @@ impl From<UrlParseError> for WsClientError {
}
}
impl From<ClientConnectorError> for WsClientError {
fn from(err: ClientConnectorError) -> WsClientError {
WsClientError::Connector(err)
impl From<SendRequestError> for WsClientError {
fn from(err: SendRequestError) -> WsClientError {
WsClientError::SendRequest(err)
}
}
impl From<WsError> for WsClientError {
fn from(err: WsError) -> WsClientError {
WsClientError::Protocol(err)
}
}
@ -206,21 +218,17 @@ impl WsClient {
}
struct WsInner {
conn: Connection,
writer: HttpClientWriter,
parser: HttpResponseParser,
parser_buf: BytesMut,
tx: UnboundedSender<Bytes>,
rx: PayloadHelper<ClientResponse>,
closed: bool,
error_sent: bool,
}
pub struct WsHandshake {
inner: Option<WsInner>,
request: Option<ClientRequest>,
sent: bool,
request: Option<SendRequest>,
tx: Option<UnboundedSender<Bytes>>,
key: String,
error: Option<WsClientError>,
stream: Option<Box<Future<Item=Result<Connection, WsClientError>, Error=WsClientError>>>,
}
impl WsHandshake {
@ -235,31 +243,29 @@ impl WsHandshake {
let key = base64::encode(&sec_key);
if let Some(mut request) = request {
let stream = Box::new(
conn.send(Connect(request.uri().clone()))
.map(|res| res.map_err(|e| e.into()))
.map_err(|_| WsClientError::Disconnected));
request.headers_mut().insert(
HeaderName::try_from("SEC-WEBSOCKET-KEY").unwrap(),
HeaderValue::try_from(key.as_str()).unwrap());
let (tx, rx) = unbounded();
request.set_body(Body::Streaming(
Box::new(rx.map_err(|_| io::Error::new(
io::ErrorKind::Other, "disconnected").into()))));
WsHandshake {
key: key,
inner: None,
request: Some(request),
sent: false,
request: Some(request.with_connector(conn.clone())),
tx: Some(tx),
error: err,
stream: Some(stream),
}
} else {
WsHandshake {
key: key,
inner: None,
request: None,
sent: false,
tx: None,
error: err,
stream: None,
}
}
}
@ -274,94 +280,67 @@ impl Future for WsHandshake {
return Err(err)
}
if self.stream.is_some() {
match self.stream.as_mut().unwrap().poll()? {
Async::Ready(result) => match result {
Ok(conn) => {
let inner = WsInner {
conn: conn,
writer: HttpClientWriter::new(SharedBytes::default()),
parser: HttpResponseParser::default(),
parser_buf: BytesMut::new(),
closed: false,
error_sent: false,
};
self.stream.take();
self.inner = Some(inner);
}
Err(err) => return Err(err),
},
Async::NotReady => return Ok(Async::NotReady)
let resp = match self.request.as_mut().unwrap().poll()? {
Async::Ready(response) => {
self.request.take();
response
},
Async::NotReady => return Ok(Async::NotReady)
};
// verify response
if resp.status() != StatusCode::SWITCHING_PROTOCOLS {
return Err(WsClientError::InvalidResponseStatus)
}
// Check for "UPGRADE" to websocket header
let has_hdr = if let Some(hdr) = resp.headers().get(header::UPGRADE) {
if let Ok(s) = hdr.to_str() {
s.to_lowercase().contains("websocket")
} else {
false
}
} else {
false
};
if !has_hdr {
return Err(WsClientError::InvalidUpgradeHeader)
}
// Check for "CONNECTION" header
let has_hdr = if let Some(conn) = resp.headers().get(header::CONNECTION) {
if let Ok(s) = conn.to_str() {
s.to_lowercase().contains("upgrade")
} else { false }
} else { false };
if !has_hdr {
return Err(WsClientError::InvalidConnectionHeader)
}
let mut inner = self.inner.take().unwrap();
if !self.sent {
self.sent = true;
inner.writer.start(self.request.as_mut().unwrap())?;
}
if let Err(err) = inner.writer.poll_completed(&mut inner.conn, false) {
return Err(err.into())
let match_key = if let Some(key) = resp.headers().get(
HeaderName::try_from("SEC-WEBSOCKET-ACCEPT").unwrap())
{
// field is constructed by concatenating /key/
// with the string "258EAFA5-E914-47DA-95CA-C5AB0DC85B11" (RFC 6455)
const WS_GUID: &[u8] = b"258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
let mut sha1 = Sha1::new();
sha1.update(self.key.as_ref());
sha1.update(WS_GUID);
key.as_bytes() == base64::encode(&sha1.digest().bytes()).as_bytes()
} else {
false
};
if !match_key {
return Err(WsClientError::InvalidChallengeResponse)
}
match inner.parser.parse(&mut inner.conn, &mut inner.parser_buf) {
Ok(Async::Ready(resp)) => {
// verify response
if resp.status() != StatusCode::SWITCHING_PROTOCOLS {
return Err(WsClientError::InvalidResponseStatus)
}
// Check for "UPGRADE" to websocket header
let has_hdr = if let Some(hdr) = resp.headers().get(header::UPGRADE) {
if let Ok(s) = hdr.to_str() {
s.to_lowercase().contains("websocket")
} else {
false
}
} else {
false
};
if !has_hdr {
return Err(WsClientError::InvalidUpgradeHeader)
}
// Check for "CONNECTION" header
let has_hdr = if let Some(conn) = resp.headers().get(header::CONNECTION) {
if let Ok(s) = conn.to_str() {
s.to_lowercase().contains("upgrade")
} else { false }
} else { false };
if !has_hdr {
return Err(WsClientError::InvalidConnectionHeader)
}
let inner = WsInner {
tx: self.tx.take().unwrap(),
rx: PayloadHelper::new(resp),
closed: false,
};
let match_key = if let Some(key) = resp.headers().get(
HeaderName::try_from("SEC-WEBSOCKET-ACCEPT").unwrap())
{
// field is constructed by concatenating /key/
// with the string "258EAFA5-E914-47DA-95CA-C5AB0DC85B11" (RFC 6455)
const WS_GUID: &[u8] = b"258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
let mut sha1 = Sha1::new();
sha1.update(self.key.as_ref());
sha1.update(WS_GUID);
key.as_bytes() == base64::encode(&sha1.digest().bytes()).as_bytes()
} else {
false
};
if !match_key {
return Err(WsClientError::InvalidChallengeResponse)
}
let inner = Rc::new(UnsafeCell::new(inner));
Ok(Async::Ready(
(WsClientReader{inner: Rc::clone(&inner)},
WsClientWriter{inner: inner})))
},
Ok(Async::NotReady) => {
self.inner = Some(inner);
Ok(Async::NotReady)
},
Err(err) => Err(err.into())
}
let inner = Rc::new(UnsafeCell::new(inner));
Ok(Async::Ready(
(WsClientReader{inner: Rc::clone(&inner)}, WsClientWriter{inner: inner})))
}
}
@ -389,24 +368,13 @@ impl Stream for WsClientReader {
fn poll(&mut self) -> Poll<Option<Self::Item>, Self::Error> {
let inner = self.as_mut();
let mut done = false;
match utils::read_from_io(&mut inner.conn, &mut inner.parser_buf) {
Ok(Async::Ready(0)) => {
done = true;
inner.closed = true;
},
Ok(Async::Ready(_)) | Ok(Async::NotReady) => (),
Err(err) =>
return Err(err.into())
if inner.closed {
return Ok(Async::Ready(None))
}
// write
let _ = inner.writer.poll_completed(&mut inner.conn, false);
// read
match Frame::parse(&mut inner.parser_buf, false) {
Ok(Some(frame)) => {
match Frame::parse(&mut inner.rx, false) {
Ok(Async::Ready(Some(frame))) => {
// trace!("WsFrame {}", frame);
let (_finished, opcode, payload) = frame.unpack();
@ -416,8 +384,9 @@ impl Stream for WsClientReader {
Ok(Async::Ready(Some(Message::Error))),
OpCode::Close => {
inner.closed = true;
inner.error_sent = true;
Ok(Async::Ready(Some(Message::Closed)))
let code = NetworkEndian::read_uint(payload.as_ref(), 2) as u16;
Ok(Async::Ready(
Some(Message::Close(CloseCode::from(code)))))
},
OpCode::Ping =>
Ok(Async::Ready(Some(
@ -440,23 +409,10 @@ impl Stream for WsClientReader {
}
}
}
Ok(None) => {
if done {
Ok(Async::Ready(None))
} else if inner.closed {
if !inner.error_sent {
inner.error_sent = true;
Ok(Async::Ready(Some(Message::Closed)))
} else {
Ok(Async::Ready(None))
}
} else {
Ok(Async::NotReady)
}
},
Ok(Async::Ready(None)) => Ok(Async::Ready(None)),
Ok(Async::NotReady) => Ok(Async::NotReady),
Err(err) => {
inner.closed = true;
inner.error_sent = true;
Err(err.into())
}
}
@ -478,9 +434,9 @@ impl WsClientWriter {
/// Write payload
#[inline]
fn write(&mut self, data: Binary) {
fn write(&mut self, mut data: Binary) {
if !self.as_mut().closed {
let _ = self.as_mut().writer.write(data);
let _ = self.as_mut().tx.unbounded_send(data.take());
} else {
warn!("Trying to write to disconnected response");
}

147
src/ws/frame.rs
View file

@ -1,11 +1,13 @@
use std::{fmt, mem};
use std::io::{Error, ErrorKind};
use std::iter::FromIterator;
use bytes::{BytesMut, BufMut};
use bytes::{Bytes, BytesMut, BufMut};
use byteorder::{ByteOrder, BigEndian, NetworkEndian};
use futures::{Async, Poll, Stream};
use rand;
use body::Binary;
use error::{WsError, PayloadError};
use payload::PayloadHelper;
use ws::proto::{OpCode, CloseCode};
use ws::mask::apply_mask;
@ -48,14 +50,15 @@ impl Frame {
}
/// Parse the input stream into a frame.
pub fn parse(buf: &mut BytesMut, server: bool) -> Result<Option<Frame>, Error> {
pub fn parse<S>(pl: &mut PayloadHelper<S>, server: bool) -> Poll<Option<Frame>, WsError>
where S: Stream<Item=Bytes, Error=PayloadError>
{
let mut idx = 2;
let mut size = buf.len();
if size < 2 {
return Ok(None)
}
size -= 2;
let buf = match pl.copy(2)? {
Async::Ready(Some(buf)) => buf,
Async::Ready(None) => return Ok(Async::Ready(None)),
Async::NotReady => return Ok(Async::NotReady),
};
let first = buf[0];
let second = buf[1];
let finished = first & 0x80 != 0;
@ -63,11 +66,9 @@ impl Frame {
// check masking
let masked = second & 0x80 != 0;
if !masked && server {
return Err(Error::new(
ErrorKind::Other, "Received an unmasked frame from client"))
return Err(WsError::UnmaskedFrame)
} else if masked && !server {
return Err(Error::new(
ErrorKind::Other, "Received a masked frame from server"))
return Err(WsError::MaskedFrame)
}
let rsv1 = first & 0x40 != 0;
@ -77,19 +78,21 @@ impl Frame {
let len = second & 0x7F;
let length = if len == 126 {
if size < 2 {
return Ok(None)
}
let buf = match pl.copy(4)? {
Async::Ready(Some(buf)) => buf,
Async::Ready(None) => return Ok(Async::Ready(None)),
Async::NotReady => return Ok(Async::NotReady),
};
let len = NetworkEndian::read_uint(&buf[idx..], 2) as usize;
size -= 2;
idx += 2;
len
} else if len == 127 {
if size < 8 {
return Ok(None)
}
let buf = match pl.copy(10)? {
Async::Ready(Some(buf)) => buf,
Async::Ready(None) => return Ok(Async::Ready(None)),
Async::NotReady => return Ok(Async::NotReady),
};
let len = NetworkEndian::read_uint(&buf[idx..], 8) as usize;
size -= 8;
idx += 8;
len
} else {
@ -97,50 +100,42 @@ impl Frame {
};
let mask = if server {
if size < 4 {
return Ok(None)
} else {
let mut mask_bytes = [0u8; 4];
size -= 4;
mask_bytes.copy_from_slice(&buf[idx..idx+4]);
idx += 4;
Some(mask_bytes)
}
let buf = match pl.copy(idx + 4)? {
Async::Ready(Some(buf)) => buf,
Async::Ready(None) => return Ok(Async::Ready(None)),
Async::NotReady => return Ok(Async::NotReady),
};
let mut mask_bytes = [0u8; 4];
mask_bytes.copy_from_slice(&buf[idx..idx+4]);
idx += 4;
Some(mask_bytes)
} else {
None
};
if size < length {
return Ok(None)
}
let mut data = match pl.readexactly(idx + length)? {
Async::Ready(Some(buf)) => buf,
Async::Ready(None) => return Ok(Async::Ready(None)),
Async::NotReady => return Ok(Async::NotReady),
};
// get body
buf.split_to(idx);
let mut data = if length > 0 {
buf.split_to(length)
} else {
BytesMut::new()
};
data.split_to(idx);
// Disallow bad opcode
if let OpCode::Bad = opcode {
return Err(
Error::new(
ErrorKind::Other,
format!("Encountered invalid opcode: {}", first & 0x0F)))
return Err(WsError::InvalidOpcode(first & 0x0F))
}
// control frames must have length <= 125
match opcode {
OpCode::Ping | OpCode::Pong if length > 125 => {
return Err(
Error::new(
ErrorKind::Other,
format!("Rejected WebSocket handshake.Received control frame with length: {}.", length)))
return Err(WsError::InvalidLength(length))
}
OpCode::Close if length > 125 => {
debug!("Received close frame with payload length exceeding 125. Morphing to protocol close frame.");
return Ok(Some(Frame::default()))
return Ok(Async::Ready(Some(Frame::default())))
}
_ => ()
}
@ -150,14 +145,14 @@ impl Frame {
apply_mask(&mut data, mask);
}
Ok(Some(Frame {
Ok(Async::Ready(Some(Frame {
finished: finished,
rsv1: rsv1,
rsv2: rsv2,
rsv3: rsv3,
opcode: opcode,
payload: data.into(),
}))
})))
}
/// Generate binary representation
@ -258,13 +253,33 @@ impl fmt::Display for Frame {
#[cfg(test)]
mod tests {
use super::*;
use futures::stream::once;
fn is_none(frm: Poll<Option<Frame>, WsError>) -> bool {
match frm {
Ok(Async::Ready(None)) => true,
_ => false,
}
}
fn extract(frm: Poll<Option<Frame>, WsError>) -> Frame {
match frm {
Ok(Async::Ready(Some(frame))) => frame,
_ => panic!("error"),
}
}
#[test]
fn test_parse() {
let mut buf = PayloadHelper::new(
once(Ok(BytesMut::from(&[0b00000001u8, 0b00000001u8][..]).freeze())));
assert!(is_none(Frame::parse(&mut buf, false)));
let mut buf = BytesMut::from(&[0b00000001u8, 0b00000001u8][..]);
assert!(Frame::parse(&mut buf, false).unwrap().is_none());
buf.extend(b"1");
let frame = Frame::parse(&mut buf, false).unwrap().unwrap();
let mut buf = PayloadHelper::new(once(Ok(buf.freeze())));
let frame = extract(Frame::parse(&mut buf, false));
println!("FRAME: {}", frame);
assert!(!frame.finished);
assert_eq!(frame.opcode, OpCode::Text);
@ -273,8 +288,10 @@ mod tests {
#[test]
fn test_parse_length0() {
let mut buf = BytesMut::from(&[0b00000001u8, 0b00000000u8][..]);
let frame = Frame::parse(&mut buf, false).unwrap().unwrap();
let buf = BytesMut::from(&[0b00000001u8, 0b00000000u8][..]);
let mut buf = PayloadHelper::new(once(Ok(buf.freeze())));
let frame = extract(Frame::parse(&mut buf, false));
assert!(!frame.finished);
assert_eq!(frame.opcode, OpCode::Text);
assert!(frame.payload.is_empty());
@ -282,12 +299,16 @@ mod tests {
#[test]
fn test_parse_length2() {
let buf = BytesMut::from(&[0b00000001u8, 126u8][..]);
let mut buf = PayloadHelper::new(once(Ok(buf.freeze())));
assert!(is_none(Frame::parse(&mut buf, false)));
let mut buf = BytesMut::from(&[0b00000001u8, 126u8][..]);
assert!(Frame::parse(&mut buf, false).unwrap().is_none());
buf.extend(&[0u8, 4u8][..]);
buf.extend(b"1234");
let mut buf = PayloadHelper::new(once(Ok(buf.freeze())));
let frame = Frame::parse(&mut buf, false).unwrap().unwrap();
let frame = extract(Frame::parse(&mut buf, false));
assert!(!frame.finished);
assert_eq!(frame.opcode, OpCode::Text);
assert_eq!(frame.payload.as_ref(), &b"1234"[..]);
@ -295,12 +316,16 @@ mod tests {
#[test]
fn test_parse_length4() {
let buf = BytesMut::from(&[0b00000001u8, 127u8][..]);
let mut buf = PayloadHelper::new(once(Ok(buf.freeze())));
assert!(is_none(Frame::parse(&mut buf, false)));
let mut buf = BytesMut::from(&[0b00000001u8, 127u8][..]);
assert!(Frame::parse(&mut buf, false).unwrap().is_none());
buf.extend(&[0u8, 0u8, 0u8, 0u8, 0u8, 0u8, 0u8, 4u8][..]);
buf.extend(b"1234");
let mut buf = PayloadHelper::new(once(Ok(buf.freeze())));
let frame = Frame::parse(&mut buf, false).unwrap().unwrap();
let frame = extract(Frame::parse(&mut buf, false));
assert!(!frame.finished);
assert_eq!(frame.opcode, OpCode::Text);
assert_eq!(frame.payload.as_ref(), &b"1234"[..]);
@ -311,10 +336,11 @@ mod tests {
let mut buf = BytesMut::from(&[0b00000001u8, 0b10000001u8][..]);
buf.extend(b"0001");
buf.extend(b"1");
let mut buf = PayloadHelper::new(once(Ok(buf.freeze())));
assert!(Frame::parse(&mut buf, false).is_err());
let frame = Frame::parse(&mut buf, true).unwrap().unwrap();
let frame = extract(Frame::parse(&mut buf, true));
assert!(!frame.finished);
assert_eq!(frame.opcode, OpCode::Text);
assert_eq!(frame.payload, vec![1u8].into());
@ -324,10 +350,11 @@ mod tests {
fn test_parse_frame_no_mask() {
let mut buf = BytesMut::from(&[0b00000001u8, 0b00000001u8][..]);
buf.extend(&[1u8]);
let mut buf = PayloadHelper::new(once(Ok(buf.freeze())));
assert!(Frame::parse(&mut buf, true).is_err());
let frame = Frame::parse(&mut buf, false).unwrap().unwrap();
let frame = extract(Frame::parse(&mut buf, false));
assert!(!frame.finished);
assert_eq!(frame.opcode, OpCode::Text);
assert_eq!(frame.payload, vec![1u8].into());

139
src/ws/mod.rs
View file

@ -43,15 +43,16 @@
//! # .finish();
//! # }
//! ```
use bytes::BytesMut;
use bytes::Bytes;
use http::{Method, StatusCode, header};
use futures::{Async, Poll, Stream};
use byteorder::{ByteOrder, NetworkEndian};
use actix::{Actor, AsyncContext, Handler};
use body::Binary;
use payload::Payload;
use error::{Error, WsHandshakeError};
use payload::PayloadHelper;
use error::{Error, WsHandshakeError, PayloadError};
use httprequest::HttpRequest;
use httpresponse::{ConnectionType, HttpResponse, HttpResponseBuilder};
@ -80,8 +81,7 @@ pub enum Message {
Binary(Binary),
Ping(String),
Pong(String),
Close,
Closed,
Close(CloseCode),
Error
}
@ -165,104 +165,67 @@ pub fn handshake<S>(req: &HttpRequest<S>) -> Result<HttpResponseBuilder, WsHands
}
/// Maps `Payload` stream into stream of `ws::Message` items
pub struct WsStream {
rx: Payload,
buf: BytesMut,
pub struct WsStream<S> {
rx: PayloadHelper<S>,
closed: bool,
error_sent: bool,
}
impl WsStream {
pub fn new(payload: Payload) -> WsStream {
WsStream { rx: payload,
buf: BytesMut::new(),
closed: false,
error_sent: false }
impl<S> WsStream<S> where S: Stream<Item=Bytes, Error=PayloadError> {
pub fn new(stream: S) -> WsStream<S> {
WsStream { rx: PayloadHelper::new(stream),
closed: false }
}
}
impl Stream for WsStream {
impl<S> Stream for WsStream<S> where S: Stream<Item=Bytes, Error=PayloadError> {
type Item = Message;
type Error = ();
fn poll(&mut self) -> Poll<Option<Self::Item>, Self::Error> {
let mut done = false;
if self.closed {
return Ok(Async::Ready(None))
}
if !self.closed {
loop {
match self.rx.poll() {
Ok(Async::Ready(Some(chunk))) => {
self.buf.extend_from_slice(&chunk)
}
Ok(Async::Ready(None)) => {
done = true;
match Frame::parse(&mut self.rx, true) {
Ok(Async::Ready(Some(frame))) => {
// trace!("WsFrame {}", frame);
let (_finished, opcode, payload) = frame.unpack();
match opcode {
OpCode::Continue => unimplemented!(),
OpCode::Bad =>
Ok(Async::Ready(Some(Message::Error))),
OpCode::Close => {
self.closed = true;
break;
}
Ok(Async::NotReady) => break,
Err(_) => {
self.closed = true;
break;
let code = NetworkEndian::read_uint(payload.as_ref(), 2) as u16;
Ok(Async::Ready(
Some(Message::Close(CloseCode::from(code)))))
},
OpCode::Ping =>
Ok(Async::Ready(Some(
Message::Ping(
String::from_utf8_lossy(payload.as_ref()).into())))),
OpCode::Pong =>
Ok(Async::Ready(Some(
Message::Pong(String::from_utf8_lossy(payload.as_ref()).into())))),
OpCode::Binary =>
Ok(Async::Ready(Some(Message::Binary(payload)))),
OpCode::Text => {
let tmp = Vec::from(payload.as_ref());
match String::from_utf8(tmp) {
Ok(s) =>
Ok(Async::Ready(Some(Message::Text(s)))),
Err(_) =>
Ok(Async::Ready(Some(Message::Error))),
}
}
}
}
}
loop {
match Frame::parse(&mut self.buf, true) {
Ok(Some(frame)) => {
// trace!("WsFrame {}", frame);
let (_finished, opcode, payload) = frame.unpack();
match opcode {
OpCode::Continue => continue,
OpCode::Bad =>
return Ok(Async::Ready(Some(Message::Error))),
OpCode::Close => {
self.closed = true;
self.error_sent = true;
return Ok(Async::Ready(Some(Message::Closed)))
},
OpCode::Ping =>
return Ok(Async::Ready(Some(
Message::Ping(
String::from_utf8_lossy(payload.as_ref()).into())))),
OpCode::Pong =>
return Ok(Async::Ready(Some(
Message::Pong(
String::from_utf8_lossy(payload.as_ref()).into())))),
OpCode::Binary =>
return Ok(Async::Ready(Some(Message::Binary(payload)))),
OpCode::Text => {
let tmp = Vec::from(payload.as_ref());
match String::from_utf8(tmp) {
Ok(s) =>
return Ok(Async::Ready(Some(Message::Text(s)))),
Err(_) =>
return Ok(Async::Ready(Some(Message::Error))),
}
}
}
}
Ok(None) => {
if done {
return Ok(Async::Ready(None))
} else if self.closed {
if !self.error_sent {
self.error_sent = true;
return Ok(Async::Ready(Some(Message::Closed)))
} else {
return Ok(Async::Ready(None))
}
} else {
return Ok(Async::NotReady)
}
},
Err(_) => {
self.closed = true;
self.error_sent = true;
return Ok(Async::Ready(Some(Message::Error)));
}
Ok(Async::Ready(None)) => Ok(Async::Ready(None)),
Ok(Async::NotReady) => Ok(Async::NotReady),
Err(_) => {
self.closed = true;
Ok(Async::Ready(Some(Message::Error)))
}
}
}

3
tests/test_ws.rs
View file

@ -24,6 +24,7 @@ impl Handler<ws::Message> for Ws {
ws::Message::Ping(msg) => ctx.pong(&msg),
ws::Message::Text(text) => ctx.text(text),
ws::Message::Binary(bin) => ctx.binary(bin),
ws::Message::Close(reason) => ctx.close(reason, ""),
_ => (),
}
}
@ -49,5 +50,5 @@ fn test_simple() {
writer.close(ws::CloseCode::Normal, "");
let (item, _) = srv.execute(reader.into_future()).unwrap();
assert!(item.is_none());
assert_eq!(item, Some(ws::Message::Close(ws::CloseCode::Normal)));
}