feat(server): change default dispatcher

- Deprecates the `no_proto` configuration on `Server`. It is always
  enabled.
- Deprecates all pieces related to tokio-proto.
- Makes the tokio-proto crate optional, and the `server-proto` feature
  can be used to completely remove the dependency. It is enabled by
  default.

.travis.yml

@@ -8,8 +8,9 @@ matrix:
           env: FEATURES="--features nightly"
         - rust: beta
         - rust: stable
+          env: HYPER_DOCS=1
         - rust: stable
-          env: HYPER_NO_PROTO=1
+          env: FEATURES="--no-default-features"
         - rust: stable
           env: FEATURES="--features compat"
         - rust: 1.17.0
@@ -37,7 +38,7 @@ addons:
 
 
 after_success:
-  - '[ $TRAVIS_RUST_VERSION = stable ] &&
+  - '[ "$HYPER_DOCS" = "1" ] &&
     LOCAL="~/.local" && export PATH=$LOCAL/bin:$PATH &&
     wget https://github.com/SimonKagstrom/kcov/archive/master.tar.gz &&
     tar xzf master.tar.gz && mkdir kcov-master/build && cd kcov-master/build &&
@@ -51,7 +52,7 @@ after_success:
       fi;
     done &&
     kcov --coveralls-id=$TRAVIS_JOB_ID --merge target/cov target/cov/*'
-  - '[ $TRAVIS_PULL_REQUEST = false ] && [ $TRAVIS_RUST_VERSION = stable ] &&
+  - '[ $TRAVIS_PULL_REQUEST = false ] && [ "$HYPER_DOCS" = "1" ] &&
     { [ "$TRAVIS_TAG" != "" ] || [ "$TRAVIS_BRANCH" == "master" ]; } &&
     ./.travis/docs.sh'
 

Cargo.toml

@@ -32,7 +32,7 @@ percent-encoding = "1.0"
 relay = "0.1"
 time = "0.1"
 tokio-core = "0.1.6"
-tokio-proto = "0.1"
+tokio-proto = { version = "0.1", optional = true }
 tokio-service = "0.1"
 tokio-io = "0.1"
 unicase = "2.0"
@@ -48,4 +48,4 @@ default = ["server-proto"]
 nightly = []
 raw_status = []
 compat = [ "http" ]
-server-proto = []
+server-proto = ["tokio-proto"]

examples/hello.rs

@@ -19,8 +19,7 @@ fn main() {
             .with_body(PHRASE))
     }));
 
-    let mut server = Http::new().bind(&addr, new_service).unwrap();
+    let server = Http::new().bind(&addr, new_service).unwrap();
-    server.no_proto();
     println!("Listening on http://{} with 1 thread.", server.local_addr().unwrap());
     server.run().unwrap();
 }

examples/params.rs

@@ -99,8 +99,7 @@ fn main() {
     pretty_env_logger::init().unwrap();
     let addr = "127.0.0.1:1337".parse().unwrap();
 
-    let mut server = Http::new().bind(&addr, || Ok(ParamExample)).unwrap();
+    let server = Http::new().bind(&addr, || Ok(ParamExample)).unwrap();
-    server.no_proto();
     println!("Listening on http://{} with 1 thread.", server.local_addr().unwrap());
     server.run().unwrap();
 }

examples/send_file.rs

@@ -135,8 +135,7 @@ fn main() {
     pretty_env_logger::init().unwrap();
     let addr = "127.0.0.1:1337".parse().unwrap();
 
-    let mut server = Http::new().bind(&addr, || Ok(ResponseExamples)).unwrap();
+    let server = Http::new().bind(&addr, || Ok(ResponseExamples)).unwrap();
-    server.no_proto();
     println!("Listening on http://{} with 1 thread.", server.local_addr().unwrap());
     server.run().unwrap();
 }

examples/server.rs

@@ -47,8 +47,7 @@ fn main() {
     pretty_env_logger::init().unwrap();
     let addr = "127.0.0.1:1337".parse().unwrap();
 
-    let mut server = Http::new().bind(&addr, || Ok(Echo)).unwrap();
+    let server = Http::new().bind(&addr, || Ok(Echo)).unwrap();
-    server.no_proto();
     println!("Listening on http://{} with 1 thread.", server.local_addr().unwrap());
     server.run().unwrap();
 }

src/client/mod.rs

@@ -198,7 +198,7 @@ where C: Connect,
                     let pooled = pool.pooled(pool_key, tx);
                     let conn = proto::Conn::<_, _, proto::ClientTransaction, _>::new(io, pooled.clone());
                     let dispatch = proto::dispatch::Dispatcher::new(proto::dispatch::Client::new(rx), conn);
-                    handle.spawn(dispatch.map_err(|err| error!("no_proto error: {}", err)));
+                    handle.spawn(dispatch.map_err(|err| error!("client connection error: {}", err)));
                     pooled
                 })
         };

src/lib.rs

@@ -32,6 +32,7 @@ extern crate relay;
 extern crate time;
 extern crate tokio_core as tokio;
 #[macro_use] extern crate tokio_io;
+#[cfg(feature = "tokio-proto")]
 extern crate tokio_proto;
 extern crate tokio_service;
 extern crate unicase;
@@ -55,17 +56,13 @@ pub use proto::RawStatus;
 
 macro_rules! feat_server_proto {
     ($($i:item)*) => ($(
-        #[cfg_attr(
+        #[cfg(feature = "server-proto")]
-            not(feature = "server-proto"),
+        #[deprecated(
-            deprecated(
+            since="0.11.11",
-                since="0.11.7",
+            note="All usage of the tokio-proto crate is going away."
-                note="server-proto was recently added to default features, but you have disabled default features. A future version will remove these types if the server-proto feature is not enabled."
-            )
-        )]
-        #[cfg_attr(
-            not(feature = "server-proto"),
-            allow(deprecated)
         )]
+        #[doc(hidden)]
+        #[allow(deprecated)]
         $i
     )*)
 }

src/mock.rs

@@ -87,14 +87,23 @@ impl<T> AsyncIo<T> {
 }
 
 impl AsyncIo<Buf> {
+    #[cfg(feature = "tokio-proto")]
+    //TODO: fix proto::conn::tests to not use tokio-proto API,
+    //and then this cfg flag go away
     pub fn new_buf<T: Into<Vec<u8>>>(buf: T, bytes: usize) -> AsyncIo<Buf> {
         AsyncIo::new(Buf::wrap(buf.into()), bytes)
     }
 
+    #[cfg(feature = "tokio-proto")]
+    //TODO: fix proto::conn::tests to not use tokio-proto API,
+    //and then this cfg flag go away
     pub fn new_eof() -> AsyncIo<Buf> {
         AsyncIo::new(Buf::wrap(Vec::new().into()), 1)
     }
 
+    #[cfg(feature = "tokio-proto")]
+    //TODO: fix proto::conn::tests to not use tokio-proto API,
+    //and then this cfg flag go away
     pub fn flushed(&self) -> bool {
         self.flushed
     }

src/proto/body.rs

@@ -1,11 +1,13 @@
 use bytes::Bytes;
 use futures::{Async, AsyncSink, Future, Poll, Sink, StartSend, Stream};
 use futures::sync::{mpsc, oneshot};
+#[cfg(feature = "tokio-proto")]
 use tokio_proto;
 use std::borrow::Cow;
 
 use super::Chunk;
 
+#[cfg(feature = "tokio-proto")]
 pub type TokioBody = tokio_proto::streaming::Body<Chunk, ::Error>;
 pub type BodySender = mpsc::Sender<Result<Chunk, ::Error>>;
 
@@ -16,17 +18,21 @@ pub struct Body(Inner);
 
 #[derive(Debug)]
 enum Inner {
+    #[cfg(feature = "tokio-proto")]
     Tokio(TokioBody),
-    Hyper {
+    Chan {
-        close_tx: oneshot::Sender<()>,
+        close_tx: oneshot::Sender<bool>,
         rx: mpsc::Receiver<Result<Chunk, ::Error>>,
-    }
+    },
+    Once(Option<Chunk>),
+    Empty,
 }
 
 //pub(crate)
 #[derive(Debug)]
 pub struct ChunkSender {
-    close_rx: oneshot::Receiver<()>,
+    close_rx: oneshot::Receiver<bool>,
+    close_rx_check: bool,
     tx: BodySender,
 }
 
@@ -34,15 +40,14 @@ impl Body {
     /// Return an empty body stream
     #[inline]
     pub fn empty() -> Body {
-        Body(Inner::Tokio(TokioBody::empty()))
+        Body(Inner::Empty)
     }
 
     /// Return a body stream with an associated sender half
     #[inline]
     pub fn pair() -> (mpsc::Sender<Result<Chunk, ::Error>>, Body) {
-        let (tx, rx) = TokioBody::pair();
+        let (tx, rx) = channel();
-        let rx = Body(Inner::Tokio(rx));
+        (tx.tx, rx)
-        (tx, rx)
     }
 }
 
@@ -60,13 +65,16 @@ impl Stream for Body {
     #[inline]
     fn poll(&mut self) -> Poll<Option<Chunk>, ::Error> {
         match self.0 {
+            #[cfg(feature = "tokio-proto")]
             Inner::Tokio(ref mut rx) => rx.poll(),
-            Inner::Hyper { ref mut rx, .. } => match rx.poll().expect("mpsc cannot error") {
+            Inner::Chan { ref mut rx, .. } => match rx.poll().expect("mpsc cannot error") {
                 Async::Ready(Some(Ok(chunk))) => Ok(Async::Ready(Some(chunk))),
                 Async::Ready(Some(Err(err))) => Err(err),
                 Async::Ready(None) => Ok(Async::Ready(None)),
                 Async::NotReady => Ok(Async::NotReady),
             },
+            Inner::Once(ref mut val) => Ok(Async::Ready(val.take())),
+            Inner::Empty => Ok(Async::Ready(None)),
         }
     }
 }
@@ -78,9 +86,10 @@ pub fn channel() -> (ChunkSender, Body) {
 
     let tx = ChunkSender {
         close_rx: close_rx,
+        close_rx_check: true,
         tx: tx,
     };
-    let rx = Body(Inner::Hyper {
+    let rx = Body(Inner::Chan {
         close_tx: close_tx,
         rx: rx,
     });
@@ -90,10 +99,17 @@ pub fn channel() -> (ChunkSender, Body) {
 
 impl ChunkSender {
     pub fn poll_ready(&mut self) -> Poll<(), ()> {
+        if self.close_rx_check {
             match self.close_rx.poll() {
-            Ok(Async::Ready(())) | Err(_) => return Err(()),
+                Ok(Async::Ready(true)) | Err(_) => return Err(()),
+                Ok(Async::Ready(false)) => {
+                    // needed to allow converting into a plain mpsc::Receiver
+                    // if it has been, the tx will send false to disable this check
+                    self.close_rx_check = false;
+                }
                 Ok(Async::NotReady) => (),
             }
+        }
 
         self.tx.poll_ready().map_err(|_| ())
     }
@@ -107,63 +123,67 @@ impl ChunkSender {
     }
 }
 
-// deprecate soon, but can't really deprecate trait impls
+feat_server_proto! {
-#[doc(hidden)]
+    impl From<Body> for tokio_proto::streaming::Body<Chunk, ::Error> {
-impl From<Body> for tokio_proto::streaming::Body<Chunk, ::Error> {
-    #[inline]
         fn from(b: Body) -> tokio_proto::streaming::Body<Chunk, ::Error> {
             match b.0 {
                 Inner::Tokio(b) => b,
-            Inner::Hyper { close_tx, rx } => {
+                Inner::Chan { close_tx, rx } => {
-                warn!("converting hyper::Body into a tokio_proto Body is deprecated");
+                    // disable knowing if the Rx gets dropped, since we cannot
-                ::std::mem::forget(close_tx);
+                    // pass this tx along.
+                    let _ = close_tx.send(false);
                     rx.into()
+                },
+                Inner::Once(Some(chunk)) => TokioBody::from(chunk),
+                Inner::Once(None) |
+                Inner::Empty => TokioBody::empty(),
             }
         }
     }
-}
 
-// deprecate soon, but can't really deprecate trait impls
+    impl From<tokio_proto::streaming::Body<Chunk, ::Error>> for Body {
-#[doc(hidden)]
-impl From<tokio_proto::streaming::Body<Chunk, ::Error>> for Body {
-    #[inline]
         fn from(tokio_body: tokio_proto::streaming::Body<Chunk, ::Error>) -> Body {
             Body(Inner::Tokio(tokio_body))
         }
+    }
 }
 
 impl From<mpsc::Receiver<Result<Chunk, ::Error>>> for Body {
     #[inline]
     fn from(src: mpsc::Receiver<Result<Chunk, ::Error>>) -> Body {
-        TokioBody::from(src).into()
+        let (tx, _) = oneshot::channel();
+        Body(Inner::Chan {
+            close_tx: tx,
+            rx: src,
+        })
     }
 }
 
 impl From<Chunk> for Body {
     #[inline]
     fn from (chunk: Chunk) -> Body {
-        TokioBody::from(chunk).into()
+        Body(Inner::Once(Some(chunk)))
     }
 }
 
 impl From<Bytes> for Body {
     #[inline]
     fn from (bytes: Bytes) -> Body {
-        Body::from(TokioBody::from(Chunk::from(bytes)))
+        Body::from(Chunk::from(bytes))
     }
 }
 
 impl From<Vec<u8>> for Body {
     #[inline]
     fn from (vec: Vec<u8>) -> Body {
-        Body::from(TokioBody::from(Chunk::from(vec)))
+        Body::from(Chunk::from(vec))
     }
 }
 
 impl From<&'static [u8]> for Body {
     #[inline]
     fn from (slice: &'static [u8]) -> Body {
-        Body::from(TokioBody::from(Chunk::from(slice)))
+        Body::from(Chunk::from(slice))
     }
 }
 
@@ -180,14 +200,14 @@ impl From<Cow<'static, [u8]>> for Body {
 impl From<String> for Body {
     #[inline]
     fn from (s: String) -> Body {
-        Body::from(TokioBody::from(Chunk::from(s.into_bytes())))
+        Body::from(Chunk::from(s.into_bytes()))
     }
 }
 
 impl From<&'static str> for Body {
     #[inline]
     fn from(slice: &'static str) -> Body {
-        Body::from(TokioBody::from(Chunk::from(slice.as_bytes())))
+        Body::from(Chunk::from(slice.as_bytes()))
     }
 }
 

src/proto/conn.rs

@@ -2,9 +2,12 @@ use std::fmt;
 use std::io::{self, Write};
 use std::marker::PhantomData;
 
-use futures::{Poll, Async, AsyncSink, Stream, Sink, StartSend};
+use futures::{Async, AsyncSink, Poll, StartSend};
+#[cfg(feature = "tokio-proto")]
+use futures::{Sink, Stream};
 use futures::task::Task;
 use tokio_io::{AsyncRead, AsyncWrite};
+#[cfg(feature = "tokio-proto")]
 use tokio_proto::streaming::pipeline::{Frame, Transport};
 
 use proto::Http1Transaction;
@@ -51,6 +54,7 @@ where I: AsyncRead + AsyncWrite,
         self.io.set_flush_pipeline(enabled);
     }
 
+    #[cfg(feature = "tokio-proto")]
     fn poll_incoming(&mut self) -> Poll<Option<Frame<super::MessageHead<T::Incoming>, super::Chunk, ::Error>>, io::Error> {
         trace!("Conn::poll_incoming()");
 
@@ -123,7 +127,7 @@ where I: AsyncRead + AsyncWrite,
         }
     }
 
-    fn can_write_continue(&self) -> bool {
+    pub fn can_write_continue(&self) -> bool {
         match self.state.writing {
             Writing::Continue(..) => true,
             _ => false,
@@ -511,11 +515,6 @@ where I: AsyncRead + AsyncWrite,
 
     }
 
-    pub fn close_and_shutdown(&mut self) -> Poll<(), io::Error> {
-        try_ready!(self.flush());
-        self.shutdown()
-    }
-
     pub fn shutdown(&mut self) -> Poll<(), io::Error> {
         match self.io.io_mut().shutdown() {
             Ok(Async::NotReady) => Ok(Async::NotReady),
@@ -549,6 +548,7 @@ where I: AsyncRead + AsyncWrite,
 
 // ==== tokio_proto impl ====
 
+#[cfg(feature = "tokio-proto")]
 impl<I, B, T, K> Stream for Conn<I, B, T, K>
 where I: AsyncRead + AsyncWrite,
       B: AsRef<[u8]>,
@@ -567,6 +567,7 @@ where I: AsyncRead + AsyncWrite,
     }
 }
 
+#[cfg(feature = "tokio-proto")]
 impl<I, B, T, K> Sink for Conn<I, B, T, K>
 where I: AsyncRead + AsyncWrite,
       B: AsRef<[u8]>,
@@ -630,10 +631,12 @@ where I: AsyncRead + AsyncWrite,
 
     #[inline]
     fn close(&mut self) -> Poll<(), Self::SinkError> {
-        self.close_and_shutdown()
+        try_ready!(self.flush());
+        self.shutdown()
     }
 }
 
+#[cfg(feature = "tokio-proto")]
 impl<I, B, T, K> Transport for Conn<I, B, T, K>
 where I: AsyncRead + AsyncWrite + 'static,
       B: AsRef<[u8]> + 'static,
@@ -838,8 +841,10 @@ impl<B, K: KeepAlive> State<B, K> {
 
 // The DebugFrame and DebugChunk are simple Debug implementations that allow
 // us to dump the frame into logs, without logging the entirety of the bytes.
+#[cfg(feature = "tokio-proto")]
 struct DebugFrame<'a, T: fmt::Debug + 'a, B: AsRef<[u8]> + 'a>(&'a Frame<super::MessageHead<T>, B, ::Error>);
 
+#[cfg(feature = "tokio-proto")]
 impl<'a, T: fmt::Debug + 'a, B: AsRef<[u8]> + 'a> fmt::Debug for DebugFrame<'a, T, B> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         match *self.0 {
@@ -868,6 +873,8 @@ impl<'a, T: fmt::Debug + 'a, B: AsRef<[u8]> + 'a> fmt::Debug for DebugFrame<'a,
 }
 
 #[cfg(test)]
+#[cfg(feature = "tokio-proto")]
+//TODO: rewrite these using dispatch instead of tokio-proto API
 mod tests {
     use futures::{Async, Future, Stream, Sink};
     use futures::future;

src/proto/dispatch.rs

@@ -108,6 +108,8 @@ where
                         return Ok(Async::Ready(()));
                     }
                 }
+            } else if self.conn.can_write_continue() {
+                try_nb!(self.conn.flush());
             } else if let Some(mut body) = self.body_tx.take() {
                 let can_read_body = self.conn.can_read_body();
                 match body.poll_ready() {

src/proto/mod.rs

@@ -13,7 +13,9 @@ use version::HttpVersion;
 use version::HttpVersion::{Http10, Http11};
 
 pub use self::conn::{Conn, KeepAlive, KA};
-pub use self::body::{Body, TokioBody};
+pub use self::body::Body;
+#[cfg(feature = "tokio-proto")]
+pub use self::body::TokioBody;
 pub use self::chunk::Chunk;
 
 mod body;

src/server/mod.rs

@@ -49,8 +49,7 @@ feat_server_proto! {
 
 pub use self::service::{const_service, service_fn};
 
-/// An instance of the HTTP protocol, and implementation of tokio-proto's
+/// A configuration of the HTTP protocol.
-/// `ServerProto` trait.
 ///
 /// This structure is used to create instances of `Server` or to spawn off tasks
 /// which handle a connection to an HTTP server. Each instance of `Http` can be
@@ -74,7 +73,6 @@ where B: Stream<Error=::Error>,
     reactor: Core,
     listener: TcpListener,
     shutdown_timeout: Duration,
-    no_proto: bool,
 }
 
 /// A stream mapping incoming IOs to new services.
@@ -127,11 +125,7 @@ where
 
 // ===== impl Http =====
 
-// This is wrapped in this macro because using `Http` as a `ServerProto` will
+impl<B: AsRef<[u8]> + 'static> Http<B> {
-// never trigger a deprecation warning, so we have to annoy more people to
-// protect some others.
-feat_server_proto! {
-    impl<B: AsRef<[u8]> + 'static> Http<B> {
     /// Creates a new instance of the HTTP protocol, ready to spawn a server or
     /// start accepting connections.
     pub fn new() -> Http<B> {
@@ -141,10 +135,7 @@ feat_server_proto! {
             _marker: PhantomData,
         }
     }
-    }
-}
 
-impl<B: AsRef<[u8]> + 'static> Http<B> {
     /// Enables or disables HTTP keep-alive.
     ///
     /// Default is true.
@@ -187,7 +178,6 @@ impl<B: AsRef<[u8]> + 'static> Http<B> {
             listener: listener,
             protocol: self.clone(),
             shutdown_timeout: Duration::new(1, 0),
-            no_proto: false,
         })
     }
 
@@ -320,9 +310,9 @@ impl<S, B> Server<S, B>
         self
     }
 
-    /// Configure this server to not use tokio-proto infrastructure internally.
+    #[doc(hidden)]
+    #[deprecated(since="0.11.11", note="no_proto is always enabled")]
     pub fn no_proto(&mut self) -> &mut Self {
-        self.no_proto = true;
         self
     }
 
@@ -350,7 +340,7 @@ impl<S, B> Server<S, B>
     pub fn run_until<F>(self, shutdown_signal: F) -> ::Result<()>
         where F: Future<Item = (), Error = ()>,
     {
-        let Server { protocol, new_service, mut reactor, listener, shutdown_timeout, no_proto } = self;
+        let Server { protocol, new_service, mut reactor, listener, shutdown_timeout } = self;
 
         let handle = reactor.handle();
 
@@ -367,15 +357,10 @@ impl<S, B> Server<S, B>
                 info: Rc::downgrade(&info),
             };
             info.borrow_mut().active += 1;
-            if no_proto {
             let fut = protocol.serve_connection(socket, s)
                 .map(|_| ())
-                    .map_err(|err| error!("no_proto error: {}", err));
+                .map_err(move |err| error!("server connection error: ({}) {}", addr, err));
             handle.spawn(fut);
-            } else {
-                #[allow(deprecated)]
-                protocol.bind_connection(&handle, socket, addr, s);
-            }
             Ok(())
         });
 

tests/server.rs

@@ -669,7 +669,7 @@ fn disable_keep_alive_post_request() {
 }
 
 #[test]
-fn no_proto_empty_parse_eof_does_not_return_error() {
+fn empty_parse_eof_does_not_return_error() {
     let mut core = Core::new().unwrap();
     let listener = TcpListener::bind(&"127.0.0.1:0".parse().unwrap(), &core.handle()).unwrap();
     let addr = listener.local_addr().unwrap();
@@ -690,7 +690,7 @@ fn no_proto_empty_parse_eof_does_not_return_error() {
 }
 
 #[test]
-fn no_proto_nonempty_parse_eof_returns_error() {
+fn nonempty_parse_eof_returns_error() {
     let mut core = Core::new().unwrap();
     let listener = TcpListener::bind(&"127.0.0.1:0".parse().unwrap(), &core.handle()).unwrap();
     let addr = listener.local_addr().unwrap();
@@ -868,7 +868,6 @@ fn serve() -> Serve {
 
 struct ServeOptions {
     keep_alive_disabled: bool,
-    no_proto: bool,
     pipeline: bool,
     timeout: Option<Duration>,
 }
@@ -877,20 +876,12 @@ impl Default for ServeOptions {
     fn default() -> Self {
         ServeOptions {
             keep_alive_disabled: false,
-            no_proto: env("HYPER_NO_PROTO", "1"),
             pipeline: false,
             timeout: None,
         }
     }
 }
 
-fn env(name: &str, val: &str) -> bool {
-    match ::std::env::var(name) {
-        Ok(var) => var == val,
-        Err(_) => false,
-    }
-}
-
 fn serve_with_options(options: ServeOptions) -> Serve {
     let _ = pretty_env_logger::init();
 
@@ -902,13 +893,12 @@ fn serve_with_options(options: ServeOptions) -> Serve {
     let addr = "127.0.0.1:0".parse().unwrap();
 
     let keep_alive = !options.keep_alive_disabled;
-    let no_proto = !options.no_proto;
     let pipeline = options.pipeline;
     let dur = options.timeout;
 
     let thread_name = format!("test-server-{:?}", dur);
     let thread = thread::Builder::new().name(thread_name).spawn(move || {
-        let mut srv = Http::new()
+        let srv = Http::new()
             .keep_alive(keep_alive)
             .pipeline(pipeline)
             .bind(&addr, TestService {
@@ -916,9 +906,6 @@ fn serve_with_options(options: ServeOptions) -> Serve {
                 _timeout: dur,
                 reply: reply_rx,
             }).unwrap();
-        if no_proto {
-            srv.no_proto();
-        }
         addr_tx.send(srv.local_addr().unwrap()).unwrap();
         srv.run_until(shutdown_rx.then(|_| Ok(()))).unwrap();
     }).unwrap();