refactor http actor usage

examples/websocket.rs

@@ -13,8 +13,8 @@ use actix_web::*;
 
 
 /// do websocket handshake and start `MyWebSocket` actor
-fn ws_index(r: HttpRequest) -> Reply {
+fn ws_index(r: HttpRequest) -> Result<HttpResponse, Error> {
-    ws::start(r, MyWebSocket).into()
+    ws::start(r, MyWebSocket)
 }
 
 /// websocket connection is long running connection, it easier

guide/src/qs_10.md

@@ -72,7 +72,7 @@ Create `Logger` middleware with the specified `format`.
 Default `Logger` could be created with `default` method, it uses the default format:
 
 ```ignore
-  %a %t "%r" %s %b "%{Referrer}i" "%{User-Agent}i" %T
+  %a %t "%r" %s %b "%{Referer}i" "%{User-Agent}i" %T
 ```
 ```rust
 # extern crate actix_web;

guide/src/qs_14.md

@@ -110,7 +110,7 @@ fn index(req: HttpRequest<State>) -> Box<Future<Item=HttpResponse, Error=Error>>
         .and_then(|res| {
             match res {
                 Ok(user) => Ok(httpcodes::HTTPOk.build().json(user)?),
-                Err(_) => Ok(httpcodes::HTTPInternalServerError.response())
+                Err(_) => Ok(httpcodes::HTTPInternalServerError.into())
             }
         })
         .responder()

guide/src/qs_4.md

@@ -65,7 +65,7 @@ impl<S> Handler<S> for MyHandler {
     /// Handle request
     fn handle(&mut self, req: HttpRequest<S>) -> Self::Result {
         self.0 += 1;
-        httpcodes::HTTPOk.response()
+        httpcodes::HTTPOk.into()
     }
 }
 # fn main() {}
@@ -91,7 +91,7 @@ impl<S> Handler<S> for MyHandler {
     fn handle(&mut self, req: HttpRequest<S>) -> Self::Result {
         let num = self.0.load(Ordering::Relaxed) + 1;
         self.0.store(num, Ordering::Relaxed);
-        httpcodes::HTTPOk.response()
+        httpcodes::HTTPOk.into()
     }
 }
 

guide/src/qs_7.md

@@ -246,7 +246,7 @@ fn index(mut req: HttpRequest) -> Box<Future<Item=HttpResponse, Error=Error>> {
        .from_err()
        .and_then(|params| {  // <- url encoded parameters
              println!("==== BODY ==== {:?}", params);
-             ok(httpcodes::HTTPOk.response())
+             ok(httpcodes::HTTPOk.into())
        })
        .responder()
 }

guide/src/qs_8.md

@@ -20,10 +20,10 @@ use actix_web::test::TestRequest;
 fn index(req: HttpRequest) -> HttpResponse {
      if let Some(hdr) = req.headers().get(header::CONTENT_TYPE) {
         if let Ok(s) = hdr.to_str() {
-            return httpcodes::HTTPOk.response()
+            return httpcodes::HTTPOk.into()
         }
      }
-     httpcodes::HTTPBadRequest.response()
+     httpcodes::HTTPBadRequest.into()
 }
 
 fn main() {
@@ -60,7 +60,7 @@ use actix_web::*;
 use actix_web::test::TestServer;
 
 fn index(req: HttpRequest) -> HttpResponse {
-     httpcodes::HTTPOk.response()
+     httpcodes::HTTPOk.into()
 }
 
 fn main() {
@@ -80,7 +80,7 @@ use actix_web::*;
 use actix_web::test::TestServer;
 
 fn index(req: HttpRequest) -> HttpResponse {
-     httpcodes::HTTPOk.response()
+     httpcodes::HTTPOk.into()
 }
 
 /// This function get called by http server.

src/application.rs

@@ -128,7 +128,7 @@ impl<S> Application<S> where S: 'static {
         }
     }
 
-    /// Set application prefix.
+    /// Set application prefix
     ///
     /// Only requests that matches application's prefix get processed by this application.
     /// Application prefix always contains laading "/" slash. If supplied prefix

src/body.rs

@@ -5,6 +5,7 @@ use bytes::{Bytes, BytesMut};
 use futures::Stream;
 
 use error::Error;
+use context::ActorHttpContext;
 
 /// Type represent streaming body
 pub type BodyStream = Box<Stream<Item=Bytes, Error=Error>>;
@@ -18,12 +19,8 @@ pub enum Body {
     /// Unspecified streaming response. Developer is responsible for setting
     /// right `Content-Length` or `Transfer-Encoding` headers.
     Streaming(BodyStream),
-    /// Upgrade connection.
+    /// Special body type for actor response.
-    Upgrade(BodyStream),
+    Actor(Box<ActorHttpContext>),
-    /// Special body type for actor streaming response.
-    StreamingContext,
-    /// Special body type for actor upgrade response.
-    UpgradeContext,
 }
 
 /// Represents various types of binary body.
@@ -51,8 +48,7 @@ impl Body {
     #[inline]
     pub fn is_streaming(&self) -> bool {
         match *self {
-            Body::Streaming(_) | Body::StreamingContext
+            Body::Streaming(_) | Body::Actor(_) => true,
-                | Body::Upgrade(_) | Body::UpgradeContext => true,
             _ => false
         }
     }
@@ -83,15 +79,7 @@ impl PartialEq for Body {
                 Body::Binary(ref b2) => b == b2,
                 _ => false,
             },
-            Body::StreamingContext => match *other {
+            Body::Streaming(_) | Body::Actor(_) => false,
-                Body::StreamingContext => true,
-                _ => false,
-            },
-            Body::UpgradeContext => match *other {
-                Body::UpgradeContext => true,
-                _ => false,
-            },
-            Body::Streaming(_) | Body::Upgrade(_) => false,
         }
     }
 }
@@ -102,9 +90,7 @@ impl fmt::Debug for Body {
             Body::Empty => write!(f, "Body::Empty"),
             Body::Binary(ref b) => write!(f, "Body::Binary({:?})", b),
             Body::Streaming(_) => write!(f, "Body::Streaming(_)"),
-            Body::Upgrade(_) => write!(f, "Body::Upgrade(_)"),
+            Body::Actor(_) => write!(f, "Body::Actor(_)"),
-            Body::StreamingContext => write!(f, "Body::StreamingContext"),
-            Body::UpgradeContext => write!(f, "Body::UpgradeContext"),
         }
     }
 }
@@ -115,6 +101,12 @@ impl<T> From<T> for Body where T: Into<Binary>{
     }
 }
 
+impl From<Box<ActorHttpContext>> for Body {
+    fn from(ctx: Box<ActorHttpContext>) -> Body {
+        Body::Actor(ctx)
+    }
+}
+
 impl Binary {
     #[inline]
     pub fn is_empty(&self) -> bool {

src/context.rs

@@ -1,6 +1,7 @@
 use std;
+use std::marker::PhantomData;
 use std::collections::VecDeque;
-use futures::{Async, Poll};
+use futures::{Async, Future, Poll};
 use futures::sync::oneshot::Sender;
 use futures::unsync::oneshot;
 
@@ -11,19 +12,18 @@ use actix::dev::{AsyncContextApi, ActorAddressCell, ActorItemsCell, ActorWaitCel
                  Envelope, ToEnvelope, RemoteEnvelope};
 
 use body::{Body, Binary};
-use error::Error;
+use error::{Error, Result};
 use httprequest::HttpRequest;
 use httpresponse::HttpResponse;
 
 
-pub(crate) trait IoContext: 'static {
+pub trait ActorHttpContext: 'static {
     fn disconnected(&mut self);
     fn poll(&mut self) -> Poll<Option<Frame>, Error>;
 }
 
 #[derive(Debug)]
-pub(crate) enum Frame {
+pub enum Frame {
-    Message(HttpResponse),
     Payload(Option<Binary>),
     Drain(oneshot::Sender<()>),
 }
@@ -31,7 +31,7 @@ pub(crate) enum Frame {
 /// Http actor execution context
 pub struct HttpContext<A, S=()> where A: Actor<Context=HttpContext<A, S>>,
 {
-    act: A,
+    act: Option<A>,
     state: ActorState,
     modified: bool,
     items: ActorItemsCell<A>,
@@ -39,7 +39,6 @@ pub struct HttpContext<A, S=()> where A: Actor<Context=HttpContext<A, S>>,
     stream: VecDeque<Frame>,
     wait: ActorWaitCell<A>,
     request: HttpRequest<S>,
-    streaming: bool,
     disconnected: bool,
 }
 
@@ -101,12 +100,15 @@ impl<A, S> AsyncContextApi<A> for HttpContext<A, S> where A: Actor<Context=Self>
     }
 }
 
-impl<A, S> HttpContext<A, S> where A: Actor<Context=Self> {
+impl<A, S: 'static> HttpContext<A, S> where A: Actor<Context=Self> {
 
-    pub fn new(req: HttpRequest<S>, actor: A) -> HttpContext<A, S>
+    pub fn new(req: HttpRequest<S>, actor: A) -> HttpContext<A, S> {
-    {
+        HttpContext::from_request(req).actor(actor)
+    }
+
+    pub fn from_request(req: HttpRequest<S>) -> HttpContext<A, S> {
         HttpContext {
-            act: actor,
+            act: None,
             state: ActorState::Started,
             modified: false,
             items: ActorItemsCell::default(),
@@ -114,10 +116,24 @@ impl<A, S> HttpContext<A, S> where A: Actor<Context=Self> {
             wait: ActorWaitCell::default(),
             stream: VecDeque::new(),
             request: req,
-            streaming: false,
             disconnected: false,
         }
     }
+
+    pub fn actor(mut self, actor: A) -> HttpContext<A, S> {
+        self.act = Some(actor);
+        self
+    }
+
+    pub fn with_actor(mut self, actor: A, mut resp: HttpResponse) -> Result<HttpResponse> {
+        if self.act.is_some() {
+            panic!("Actor is set already");
+        }
+        self.act = Some(actor);
+
+        resp.replace_body(Body::Actor(Box::new(self)));
+        Ok(resp)
+    }
 }
 
 impl<A, S> HttpContext<A, S> where A: Actor<Context=Self> {
@@ -132,24 +148,12 @@ impl<A, S> HttpContext<A, S> where A: Actor<Context=Self> {
         &mut self.request
     }
 
-    /// Send response to peer
-    pub fn start<R: Into<HttpResponse>>(&mut self, response: R) {
-        let resp = response.into();
-        match *resp.body() {
-            Body::StreamingContext | Body::UpgradeContext => self.streaming = true,
-            _ => (),
-        }
-        self.stream.push_back(Frame::Message(resp))
-    }
-
     /// Write payload
     pub fn write<B: Into<Binary>>(&mut self, data: B) {
-        if self.streaming {
         if !self.disconnected {
-                self.stream.push_back(Frame::Payload(Some(data.into())))
+            self.stream.push_back(Frame::Payload(Some(data.into())));
-            }
         } else {
-            warn!("Trying to write response body for non-streaming response");
+            warn!("Trying to write to disconnected response");
         }
     }
 
@@ -159,11 +163,11 @@ impl<A, S> HttpContext<A, S> where A: Actor<Context=Self> {
     }
 
     /// Returns drain future
-    pub fn drain(&mut self) -> oneshot::Receiver<()> {
+    pub fn drain(&mut self) -> Drain<A> {
         let (tx, rx) = oneshot::channel();
         self.modified = true;
         self.stream.push_back(Frame::Drain(tx));
-        rx
+        Drain::new(rx)
     }
 
     /// Check if connection still open
@@ -193,7 +197,7 @@ impl<A, S> HttpContext<A, S> where A: Actor<Context=Self> {
     }
 }
 
-impl<A, S> IoContext for HttpContext<A, S> where A: Actor<Context=Self>, S: 'static {
+impl<A, S> ActorHttpContext for HttpContext<A, S> where A: Actor<Context=Self>, S: 'static {
 
     fn disconnected(&mut self) {
         self.items.stop();
@@ -204,8 +208,11 @@ impl<A, S> IoContext for HttpContext<A, S> where A: Actor<Context=Self>, S: 'sta
     }
 
     fn poll(&mut self) -> Poll<Option<Frame>, Error> {
+        if self.act.is_none() {
+            return Ok(Async::Ready(None))
+        }
         let act: &mut A = unsafe {
-            std::mem::transmute(&mut self.act as &mut A)
+            std::mem::transmute(self.act.as_mut().unwrap() as &mut A)
         };
         let ctx: &mut HttpContext<A, S> = unsafe {
             std::mem::transmute(self as &mut HttpContext<A, S>)
@@ -303,3 +310,39 @@ impl<A, S> ToEnvelope<A> for HttpContext<A, S>
         RemoteEnvelope::new(msg, tx).into()
     }
 }
+
+impl<A, S> From<HttpContext<A, S>> for Body
+    where A: Actor<Context=HttpContext<A, S>>,
+          S: 'static
+{
+    fn from(ctx: HttpContext<A, S>) -> Body {
+        Body::Actor(Box::new(ctx))
+    }
+}
+
+pub struct Drain<A> {
+    fut: oneshot::Receiver<()>,
+    _a: PhantomData<A>,
+}
+
+impl<A> Drain<A> {
+    fn new(fut: oneshot::Receiver<()>) -> Self {
+        Drain {
+            fut: fut,
+            _a: PhantomData
+        }
+    }
+}
+
+impl<A: Actor> ActorFuture for Drain<A> {
+    type Item = ();
+    type Error = ();
+    type Actor = A;
+
+    fn poll(&mut self,
+            _: &mut A,
+            _: &mut <Self::Actor as Actor>::Context) -> Poll<Self::Item, Self::Error>
+    {
+        self.fut.poll().map_err(|_| ())
+    }
+}

src/encoding.rs

@@ -416,8 +416,20 @@ impl PayloadEncoder {
                 resp.headers_mut().remove(CONTENT_LENGTH);
                 TransferEncoding::eof(buf)
             }
-            Body::Streaming(_) | Body::StreamingContext => {
+            Body::Streaming(_) | Body::Actor(_) => {
-                if resp.chunked() {
+                if resp.upgrade() {
+                    if version == Version::HTTP_2 {
+                        error!("Connection upgrade is forbidden for HTTP/2");
+                    } else {
+                        resp.headers_mut().insert(
+                            CONNECTION, HeaderValue::from_static("upgrade"));
+                    }
+                    if encoding != ContentEncoding::Identity {
+                        encoding = ContentEncoding::Identity;
+                        resp.headers_mut().remove(CONTENT_ENCODING);
+                    }
+                    TransferEncoding::eof(buf)
+                } else if resp.chunked() {
                     resp.headers_mut().remove(CONTENT_LENGTH);
                     if version != Version::HTTP_11 {
                         error!("Chunked transfer encoding is forbidden for {:?}", version);
@@ -446,19 +458,6 @@ impl PayloadEncoder {
                     TransferEncoding::eof(buf)
                 }
             }
-            Body::Upgrade(_) | Body::UpgradeContext => {
-                if version == Version::HTTP_2 {
-                    error!("Connection upgrade is forbidden for HTTP/2");
-                } else {
-                    resp.headers_mut().insert(
-                        CONNECTION, HeaderValue::from_static("upgrade"));
-                }
-                if encoding != ContentEncoding::Identity {
-                    encoding = ContentEncoding::Identity;
-                    resp.headers_mut().remove(CONTENT_ENCODING);
-                }
-                TransferEncoding::eof(buf)
-            }
         };
         resp.replace_body(body);
 

src/error.rs

@@ -114,14 +114,6 @@ impl ResponseError for header::InvalidHeaderValue {}
 /// `InternalServerError` for `futures::Canceled`
 impl ResponseError for Canceled {}
 
-/// Internal error
-#[doc(hidden)]
-#[derive(Fail, Debug)]
-#[fail(display="Unexpected task frame")]
-pub struct UnexpectedTaskFrame;
-
-impl ResponseError for UnexpectedTaskFrame {}
-
 /// A set of errors that can occur during parsing HTTP streams
 #[derive(Fail, Debug)]
 pub enum ParseError {

src/handler.rs

@@ -1,13 +1,11 @@
 use std::marker::PhantomData;
 
-use actix::Actor;
-use futures::future::{Future, ok, err};
 use regex::Regex;
+use futures::future::{Future, ok, err};
 use http::{header, StatusCode, Error as HttpError};
 
 use body::Body;
 use error::Error;
-use context::{HttpContext, IoContext};
 use httprequest::HttpRequest;
 use httpresponse::HttpResponse;
 
@@ -69,20 +67,11 @@ pub struct Reply(ReplyItem);
 
 pub(crate) enum ReplyItem {
     Message(HttpResponse),
-    Actor(Box<IoContext>),
     Future(Box<Future<Item=HttpResponse, Error=Error>>),
 }
 
 impl Reply {
 
-    /// Create actor response
-    #[inline]
-    pub fn actor<A, S>(ctx: HttpContext<A, S>) -> Reply
-        where A: Actor<Context=HttpContext<A, S>>, S: 'static
-    {
-        Reply(ReplyItem::Actor(Box::new(ctx)))
-    }
-
     /// Create async response
     #[inline]
     pub fn async<F>(fut: F) -> Reply
@@ -163,25 +152,6 @@ impl<E: Into<Error>> From<Result<Reply, E>> for Reply {
     }
 }
 
-impl<A: Actor<Context=HttpContext<A, S>>, S: 'static> Responder for HttpContext<A, S>
-{
-    type Item = Reply;
-    type Error = Error;
-
-    #[inline]
-    fn respond_to(self, _: HttpRequest) -> Result<Reply, Error> {
-        Ok(Reply(ReplyItem::Actor(Box::new(self))))
-    }
-}
-
-impl<A: Actor<Context=HttpContext<A, S>>, S: 'static> From<HttpContext<A, S>> for Reply {
-
-    #[inline]
-    fn from(ctx: HttpContext<A, S>) -> Reply {
-        Reply(ReplyItem::Actor(Box::new(ctx)))
-    }
-}
-
 impl<I, E> Responder for Box<Future<Item=I, Error=E>>
     where I: Responder + 'static,
           E: Into<Error> + 'static

src/httpcodes.rs

@@ -54,9 +54,6 @@ impl StaticResponse {
     pub fn build(&self) -> HttpResponseBuilder {
         HttpResponse::build(self.0)
     }
-    pub fn response(&self) -> HttpResponse {
-        HttpResponse::new(self.0, Body::Empty)
-    }
     pub fn with_reason(self, reason: &'static str) -> HttpResponse {
         let mut resp = HttpResponse::new(self.0, Body::Empty);
         resp.set_reason(reason);
@@ -92,7 +89,7 @@ impl Responder for StaticResponse {
 
 impl From<StaticResponse> for HttpResponse {
     fn from(st: StaticResponse) -> Self {
-        st.response()
+        HttpResponse::new(st.0, Body::Empty)
     }
 }
 
@@ -153,7 +150,7 @@ mod tests {
 
     #[test]
     fn test_response() {
-        let resp = HTTPOk.response();
+        let resp: HttpResponse = HTTPOk.into();
         assert_eq!(resp.status(), StatusCode::OK);
     }
 
@@ -165,7 +162,7 @@ mod tests {
 
     #[test]
     fn test_with_reason() {
-        let resp = HTTPOk.response();
+        let resp: HttpResponse = HTTPOk.into();
         assert_eq!(resp.reason(), "OK");
 
         let resp = HTTPBadRequest.with_reason("test");

src/httprequest.rs

@@ -135,6 +135,12 @@ impl HttpRequest<()> {
 
 impl<S> HttpRequest<S> {
 
+    #[inline]
+    /// Construct new http request with state.
+    pub fn change_state<NS>(self, state: Rc<NS>) -> HttpRequest<NS> {
+        HttpRequest(self.0, Some(state), self.2.clone())
+    }
+
     #[inline]
     /// Construct new http request without state.
     pub(crate) fn clone_without_state(&self) -> HttpRequest {
@@ -447,7 +453,7 @@ impl<S> HttpRequest<S> {
     ///             }
     ///         })
     ///         .finish()  // <- Stream::finish() combinator from actix
-    ///         .map(|_| httpcodes::HTTPOk.response())
+    ///         .map(|_| httpcodes::HTTPOk.into())
     ///         .responder()
     /// }
     /// # fn main() {}
@@ -477,7 +483,7 @@ impl<S> HttpRequest<S> {
     ///        .from_err()
     ///        .and_then(|params| {  // <- url encoded parameters
     ///             println!("==== BODY ==== {:?}", params);
-    ///             ok(httpcodes::HTTPOk.response())
+    ///             ok(httpcodes::HTTPOk.into())
     ///        })
     ///        .responder()
     /// }
@@ -512,7 +518,7 @@ impl<S> HttpRequest<S> {
     ///        .from_err()
     ///        .and_then(|val: MyObj| {  // <- deserialized value
     ///            println!("==== BODY ==== {:?}", val);
-    ///            Ok(httpcodes::HTTPOk.response())
+    ///            Ok(httpcodes::HTTPOk.into())
     ///        }).responder()
     /// }
     /// # fn main() {}

src/httpresponse.rs

@@ -138,6 +138,7 @@ impl HttpResponse {
     }
 
     /// Connection upgrade status
+    #[inline]
     pub fn upgrade(&self) -> bool {
         self.get_ref().connection_type == Some(ConnectionType::Upgrade)
     }
@@ -155,11 +156,13 @@ impl HttpResponse {
     }
 
     /// is chunked encoding enabled
+    #[inline]
     pub fn chunked(&self) -> bool {
         self.get_ref().chunked
     }
 
     /// Content encoding
+    #[inline]
     pub fn content_encoding(&self) -> &ContentEncoding {
         &self.get_ref().encoding
     }
@@ -171,6 +174,7 @@ impl HttpResponse {
     }
 
     /// Get body os this response
+    #[inline]
     pub fn body(&self) -> &Body {
         &self.get_ref().body
     }
@@ -443,6 +447,15 @@ impl HttpResponseBuilder {
     pub fn finish(&mut self) -> Result<HttpResponse, HttpError> {
         self.body(Body::Empty)
     }
+
+    /// This method construct new `HttpResponseBuilder`
+    pub fn take(&mut self) -> HttpResponseBuilder {
+        HttpResponseBuilder {
+            response: self.response.take(),
+            err: self.err.take(),
+            cookies: self.cookies.take(),
+        }
+    }
 }
 
 #[inline]

src/json.rs

@@ -71,7 +71,7 @@ impl<T: Serialize> Responder for Json<T> {
 ///        .from_err()
 ///        .and_then(|val: MyObj| {  // <- deserialized value
 ///            println!("==== BODY ==== {:?}", val);
-///            Ok(httpcodes::HTTPOk.response())
+///            Ok(httpcodes::HTTPOk.into())
 ///        }).responder()
 /// }
 /// # fn main() {}

src/middleware/logger.rs

@@ -19,7 +19,7 @@ use middleware::{Middleware, Started, Finished};
 /// Default `Logger` could be created with `default` method, it uses the default format:
 ///
 /// ```ignore
-///  %a %t "%r" %s %b "%{Referrer}i" "%{User-Agent}i" %T
+///  %a %t "%r" %s %b "%{Referer}i" "%{User-Agent}i" %T
 /// ```
 /// ```rust
 /// # extern crate actix_web;
@@ -75,7 +75,7 @@ impl Default for Logger {
     /// Create `Logger` middleware with format:
     ///
     /// ```ignore
-    /// %a %t "%r" %s %b "%{Referrer}i" "%{User-Agent}i" %T
+    /// %a %t "%r" %s %b "%{Referer}i" "%{User-Agent}i" %T
     /// ```
     fn default() -> Logger {
         Logger { format: Format::default() }
@@ -121,7 +121,7 @@ struct Format(Vec<FormatText>);
 impl Default for Format {
     /// Return the default formatting style for the `Logger`:
     fn default() -> Format {
-        Format::new(r#"%a %t "%r" %s %b "%{Referrer}i" "%{User-Agent}i" %T"#)
+        Format::new(r#"%a %t "%r" %s %b "%{Referer}i" "%{User-Agent}i" %T"#)
     }
 }
 

src/payload.rs

@@ -9,20 +9,14 @@ use futures::{Future, Async, Poll, Stream};
 use futures::task::{Task, current as current_task};
 
 use body::BodyStream;
-use actix::ResponseType;
 use error::PayloadError;
 
 pub(crate) const DEFAULT_BUFFER_SIZE: usize = 65_536; // max buffer size 64k
 
 /// Just Bytes object
-#[derive(PartialEq)]
+#[derive(PartialEq, Message)]
 pub struct PayloadItem(pub Bytes);
 
-impl ResponseType for PayloadItem {
-    type Item = ();
-    type Error = ();
-}
-
 impl Deref for PayloadItem {
     type Target = Bytes;
 
@@ -91,27 +85,27 @@ impl Payload {
     }
 
     /// Get first available chunk of data.
-    pub fn readany(&mut self) -> ReadAny {
+    pub fn readany(&self) -> ReadAny {
         ReadAny(Rc::clone(&self.inner))
     }
 
     /// Get exact number of bytes
-    pub fn readexactly(&mut self, size: usize) -> ReadExactly {
+    pub fn readexactly(&self, size: usize) -> ReadExactly {
         ReadExactly(Rc::clone(&self.inner), size)
     }
 
     /// Read until `\n`
-    pub fn readline(&mut self) -> ReadLine {
+    pub fn readline(&self) -> ReadLine {
         ReadLine(Rc::clone(&self.inner))
     }
 
     /// Read until match line
-    pub fn readuntil(&mut self, line: &[u8]) -> ReadUntil {
+    pub fn readuntil(&self, line: &[u8]) -> ReadUntil {
         ReadUntil(Rc::clone(&self.inner), line.to_vec())
     }
 
     #[doc(hidden)]
-    pub fn readall(&mut self) -> Option<Bytes> {
+    pub fn readall(&self) -> Option<Bytes> {
         self.inner.borrow_mut().readall()
     }
 
@@ -132,20 +126,16 @@ impl Payload {
 
     /// Convert payload into compatible `HttpResponse` body stream
     pub fn stream(self) -> BodyStream {
-        Box::new(self.map_err(|e| e.into()))
+        Box::new(self.map(|i| i.0).map_err(|e| e.into()))
     }
 }
 
 impl Stream for Payload {
-    type Item = Bytes;
+    type Item = PayloadItem;
     type Error = PayloadError;
 
-    fn poll(&mut self) -> Poll<Option<Bytes>, PayloadError> {
+    fn poll(&mut self) -> Poll<Option<PayloadItem>, PayloadError> {
-        match self.inner.borrow_mut().readany()? {
+        self.inner.borrow_mut().readany()
-            Async::Ready(Some(item)) => Ok(Async::Ready(Some(item.0))),
-            Async::Ready(None) => Ok(Async::Ready(None)),
-            Async::NotReady => Ok(Async::NotReady),
-        }
     }
 }
 
@@ -474,7 +464,7 @@ mod tests {
     #[test]
     fn test_basic() {
         Core::new().unwrap().run(lazy(|| {
-            let (_, mut payload) = Payload::new(false);
+            let (_, payload) = Payload::new(false);
 
             assert!(!payload.eof());
             assert!(payload.is_empty());
@@ -489,7 +479,7 @@ mod tests {
     #[test]
     fn test_eof() {
         Core::new().unwrap().run(lazy(|| {
-            let (mut sender, mut payload) = Payload::new(false);
+            let (mut sender, payload) = Payload::new(false);
 
             assert_eq!(Async::NotReady, payload.readany().poll().ok().unwrap());
             assert!(!payload.eof());
@@ -514,7 +504,7 @@ mod tests {
     #[test]
     fn test_err() {
         Core::new().unwrap().run(lazy(|| {
-            let (mut sender, mut payload) = Payload::new(false);
+            let (mut sender, payload) = Payload::new(false);
 
             assert_eq!(Async::NotReady, payload.readany().poll().ok().unwrap());
 
@@ -528,7 +518,7 @@ mod tests {
     #[test]
     fn test_readany() {
         Core::new().unwrap().run(lazy(|| {
-            let (mut sender, mut payload) = Payload::new(false);
+            let (mut sender, payload) = Payload::new(false);
 
             sender.feed_data(Bytes::from("line1"));
 
@@ -552,7 +542,7 @@ mod tests {
     #[test]
     fn test_readexactly() {
         Core::new().unwrap().run(lazy(|| {
-            let (mut sender, mut payload) = Payload::new(false);
+            let (mut sender, payload) = Payload::new(false);
 
             assert_eq!(Async::NotReady, payload.readexactly(2).poll().ok().unwrap());
 
@@ -579,7 +569,7 @@ mod tests {
     #[test]
     fn test_readuntil() {
         Core::new().unwrap().run(lazy(|| {
-            let (mut sender, mut payload) = Payload::new(false);
+            let (mut sender, payload) = Payload::new(false);
 
             assert_eq!(Async::NotReady, payload.readuntil(b"ne").poll().ok().unwrap());
 

src/pipeline.rs

@@ -8,8 +8,8 @@ use futures::unsync::oneshot;
 
 use channel::HttpHandlerTask;
 use body::{Body, BodyStream};
-use context::{Frame, IoContext};
+use context::{Frame, ActorHttpContext};
-use error::{Error, UnexpectedTaskFrame};
+use error::Error;
 use handler::{Reply, ReplyItem};
 use h1writer::{Writer, WriterState};
 use httprequest::HttpRequest;
@@ -38,7 +38,7 @@ struct PipelineInfo<S> {
     req: HttpRequest<S>,
     count: usize,
     mws: Rc<Vec<Box<Middleware<S>>>>,
-    context: Option<Box<IoContext>>,
+    context: Option<Box<ActorHttpContext>>,
     error: Option<Error>,
 }
 
@@ -72,12 +72,6 @@ impl<S> PipelineInfo<S> {
     }
 }
 
-enum PipelineResponse {
-    None,
-    Context(Box<IoContext>),
-    Response(Box<Future<Item=HttpResponse, Error=Error>>),
-}
-
 impl<S, H: PipelineHandler<S>> Pipeline<S, H> {
 
     pub fn new(req: HttpRequest<S>,
@@ -364,7 +358,7 @@ impl<S, H: PipelineHandler<S>> StartMiddlewares<S, H> {
 
 // waiting for response
 struct WaitingResponse<S, H> {
-    stream: PipelineResponse,
+    fut: Box<Future<Item=HttpResponse, Error=Error>>,
     _s: PhantomData<S>,
     _h: PhantomData<H>,
 }
@@ -377,66 +371,23 @@ impl<S, H> WaitingResponse<S, H> {
         match reply.into() {
             ReplyItem::Message(resp) =>
                 RunMiddlewares::init(info, resp),
-            ReplyItem::Actor(ctx) =>
-                PipelineState::Handler(
-                    WaitingResponse { stream: PipelineResponse::Context(ctx),
-                                      _s: PhantomData, _h: PhantomData }),
             ReplyItem::Future(fut) =>
                 PipelineState::Handler(
-                    WaitingResponse { stream: PipelineResponse::Response(fut),
+                    WaitingResponse { fut: fut, _s: PhantomData, _h: PhantomData }),
-                                      _s: PhantomData, _h: PhantomData }),
         }
     }
 
     fn poll(mut self, info: &mut PipelineInfo<S>) -> Result<PipelineState<S, H>, PipelineState<S, H>>
     {
-        let stream = mem::replace(&mut self.stream, PipelineResponse::None);
+        match self.fut.poll() {
-
+            Ok(Async::NotReady) =>
-        match stream {
+                Err(PipelineState::Handler(self)),
-            PipelineResponse::Context(mut context) => {
-                loop {
-                    match context.poll() {
-                        Ok(Async::Ready(Some(frame))) => {
-                            match frame {
-                                Frame::Message(resp) => {
-                                    info.context = Some(context);
-                                    return Ok(RunMiddlewares::init(info, resp))
-                                }
-                                Frame::Payload(_) | Frame::Drain(_) => (),
-                            }
-                        },
-                        Ok(Async::Ready(None)) => {
-                            error!("Unexpected eof");
-                            let err: Error = UnexpectedTaskFrame.into();
-                            return Ok(ProcessResponse::init(err.into()))
-                        },
-                        Ok(Async::NotReady) => {
-                            self.stream = PipelineResponse::Context(context);
-                            return Err(PipelineState::Handler(self))
-                        },
-                        Err(err) =>
-                            return Ok(ProcessResponse::init(err.into()))
-                    }
-                }
-            },
-            PipelineResponse::Response(mut fut) => {
-                match fut.poll() {
-                    Ok(Async::NotReady) => {
-                        self.stream = PipelineResponse::Response(fut);
-                        Err(PipelineState::Handler(self))
-                    }
             Ok(Async::Ready(response)) =>
                 Ok(RunMiddlewares::init(info, response)),
             Err(err) =>
                 Ok(ProcessResponse::init(err.into())),
         }
     }
-            PipelineResponse::None => {
-                unreachable!("Broken internal state")
-            }
-        }
-
-    }
 }
 
 /// Middlewares response executor
@@ -554,7 +505,7 @@ impl RunningState {
 enum IOState {
     Response,
     Payload(BodyStream),
-    Context,
+    Actor(Box<ActorHttpContext>),
     Done,
 }
 
@@ -588,10 +539,10 @@ impl<S, H> ProcessResponse<S, H> {
                         };
 
                         match self.resp.replace_body(Body::Empty) {
-                            Body::Streaming(stream) | Body::Upgrade(stream) =>
+                            Body::Streaming(stream) =>
                                 self.iostate = IOState::Payload(stream),
-                            Body::StreamingContext | Body::UpgradeContext =>
+                            Body::Actor(ctx) =>
-                                self.iostate = IOState::Context,
+                                self.iostate = IOState::Actor(ctx),
                             _ => (),
                         }
 
@@ -640,17 +591,12 @@ impl<S, H> ProcessResponse<S, H> {
                             }
                         }
                     },
-                    IOState::Context => {
+                    IOState::Actor(mut ctx) => {
-                        match info.context.as_mut().unwrap().poll() {
+                        match ctx.poll() {
                             Ok(Async::Ready(Some(frame))) => {
                                 match frame {
-                                    Frame::Message(msg) => {
-                                        error!("Unexpected message frame {:?}", msg);
-                                        info.error = Some(UnexpectedTaskFrame.into());
-                                        return Ok(
-                                            FinishingMiddlewares::init(info, self.resp))
-                                    },
                                     Frame::Payload(None) => {
+                                        info.context = Some(ctx);
                                         self.iostate = IOState::Done;
                                         if let Err(err) = io.write_eof() {
                                             info.error = Some(err.into());
@@ -660,7 +606,7 @@ impl<S, H> ProcessResponse<S, H> {
                                         break
                                     },
                                     Frame::Payload(Some(chunk)) => {
-                                        self.iostate = IOState::Context;
+                                        self.iostate = IOState::Actor(ctx);
                                         match io.write(chunk.as_ref()) {
                                             Err(err) => {
                                                 info.error = Some(err.into());
@@ -678,11 +624,10 @@ impl<S, H> ProcessResponse<S, H> {
                             },
                             Ok(Async::Ready(None)) => {
                                 self.iostate = IOState::Done;
-                                info.context.take();
                                 break
                             }
                             Ok(Async::NotReady) => {
-                                self.iostate = IOState::Context;
+                                self.iostate = IOState::Actor(ctx);
                                 break
                             }
                             Err(err) => {

src/router.rs

@@ -190,7 +190,7 @@ impl Pattern {
     }
 
     /// Extract pattern parameters from the text
-    pub(crate) fn update_match_info<S>(&self, text: &str, req: &mut HttpRequest<S>) {
+    pub fn update_match_info<S>(&self, text: &str, req: &mut HttpRequest<S>) {
         if !self.names.is_empty() {
             if let Some(captures) = self.re.captures(text) {
                 let mut idx = 0;
@@ -208,8 +208,7 @@ impl Pattern {
     }
 
     /// Build pattern path.
-    pub fn path<U, I>(&self, prefix: Option<&str>, elements: U)
+    pub fn path<U, I>(&self, prefix: Option<&str>, elements: U) -> Result<String, UrlGenerationError>
-                      -> Result<String, UrlGenerationError>
         where U: IntoIterator<Item=I>,
               I: AsRef<str>,
     {

src/test.rs

@@ -41,7 +41,7 @@ use httpresponse::HttpResponse;
 /// # extern crate reqwest;
 /// #
 /// # fn my_handler(req: HttpRequest) -> HttpResponse {
-/// #     httpcodes::HTTPOk.response()
+/// #     httpcodes::HTTPOk.into()
 /// # }
 /// #
 /// # fn main() {
@@ -228,9 +228,9 @@ impl<S: 'static> Iterator for TestApp<S> {
 ///
 /// fn index(req: HttpRequest) -> HttpResponse {
 ///     if let Some(hdr) = req.headers().get(header::CONTENT_TYPE) {
-///         httpcodes::HTTPOk.response()
+///         httpcodes::HTTPOk.into()
 ///     } else {
-///         httpcodes::HTTPBadRequest.response()
+///         httpcodes::HTTPBadRequest.into()
 ///     }
 /// }
 ///
@@ -365,7 +365,6 @@ impl<S> TestRequest<S> {
             Ok(resp) => {
                 match resp.into().into() {
                     ReplyItem::Message(resp) => Ok(resp),
-                    ReplyItem::Actor(_) => panic!("Actor handler is not supported."),
                     ReplyItem::Future(_) => panic!("Async handler is not supported."),
                 }
             },

src/ws.rs

@@ -12,7 +12,7 @@
 //! use actix_web::*;
 //!
 //! // do websocket handshake and start actor
-//! fn ws_index(req: HttpRequest) -> Result<Reply> {
+//! fn ws_index(req: HttpRequest) -> Result<HttpResponse> {
 //!     ws::start(req, Ws)
 //! }
 //!
@@ -52,13 +52,11 @@ use futures::{Async, Poll, Stream};
 
 use actix::{Actor, AsyncContext, ResponseType, StreamHandler};
 
-use body::Body;
-use context::HttpContext;
-use handler::Reply;
 use payload::ReadAny;
 use error::{Error, WsHandshakeError};
+use context::HttpContext;
 use httprequest::HttpRequest;
-use httpresponse::{ConnectionType, HttpResponse};
+use httpresponse::{ConnectionType, HttpResponse, HttpResponseBuilder};
 
 use wsframe;
 use wsproto::*;
@@ -88,17 +86,17 @@ impl ResponseType for Message {
 }
 
 /// Do websocket handshake and start actor
-pub fn start<A, S>(mut req: HttpRequest<S>, actor: A) -> Result<Reply, Error>
+pub fn start<A, S>(mut req: HttpRequest<S>, actor: A) -> Result<HttpResponse, Error>
     where A: Actor<Context=HttpContext<A, S>> + StreamHandler<Message>,
           S: 'static
 {
-    let resp = handshake(&req)?;
+    let mut resp = handshake(&req)?;
-
     let stream = WsStream::new(req.payload_mut().readany());
+
     let mut ctx = HttpContext::new(req, actor);
-    ctx.start(resp);
     ctx.add_stream(stream);
-    Ok(ctx.into())
+
+    Ok(resp.body(ctx)?)
 }
 
 /// Prepare `WebSocket` handshake response.
@@ -109,7 +107,7 @@ pub fn start<A, S>(mut req: HttpRequest<S>, actor: A) -> Result<Reply, Error>
 // /// `protocols` is a sequence of known protocols. On successful handshake,
 // /// the returned response headers contain the first protocol in this list
 // /// which the server also knows.
-pub fn handshake<S>(req: &HttpRequest<S>) -> Result<HttpResponse, WsHandshakeError> {
+pub fn handshake<S>(req: &HttpRequest<S>) -> Result<HttpResponseBuilder, WsHandshakeError> {
     // WebSocket accepts only GET
     if *req.method() != Method::GET {
         return Err(WsHandshakeError::GetMethodRequired)
@@ -163,8 +161,7 @@ pub fn handshake<S>(req: &HttpRequest<S>) -> Result<HttpResponse, WsHandshakeErr
        .header(header::UPGRADE, "websocket")
        .header(header::TRANSFER_ENCODING, "chunked")
        .header(SEC_WEBSOCKET_ACCEPT, key.as_str())
-       .body(Body::UpgradeContext).unwrap()
+       .take())
-    )
 }
 
 /// Maps `Payload` stream into stream of `ws::Message` items
@@ -401,6 +398,7 @@ mod tests {
                        header::HeaderValue::from_static("13"));
         let req = HttpRequest::new(Method::GET, Uri::from_str("/").unwrap(),
                                    Version::HTTP_11, headers, None);
-        assert_eq!(StatusCode::SWITCHING_PROTOCOLS, handshake(&req).unwrap().status());
+        assert_eq!(StatusCode::SWITCHING_PROTOCOLS,
+                   handshake(&req).unwrap().finish().unwrap().status());
     }
 }