diff --git a/ntex-rt/src/lib.rs b/ntex-rt/src/lib.rs
index af124cd5..fca34fa0 100644
--- a/ntex-rt/src/lib.rs
+++ b/ntex-rt/src/lib.rs
@@ -70,6 +70,7 @@ pub mod time {
     pub use tokio::time::Instant;
     pub use tokio::time::{interval, interval_at, Interval};
     pub use tokio::time::{sleep, sleep_until, Sleep};
+    #[doc(hidden)]
     pub use tokio::time::{
         sleep as delay_for, sleep_until as delay_until, Sleep as Delay,
     };
diff --git a/ntex/src/framed/dispatcher.rs b/ntex/src/framed/dispatcher.rs
index 65227a9e..79fe0374 100644
--- a/ntex/src/framed/dispatcher.rs
+++ b/ntex/src/framed/dispatcher.rs
@@ -482,7 +482,7 @@ mod tests {
     use std::sync::{Arc, Mutex};
 
     use crate::codec::BytesCodec;
-    use crate::rt::time::delay_for;
+    use crate::rt::time::sleep;
     use crate::testing::Io;
 
     use super::*;
@@ -550,7 +550,7 @@ mod tests {
             server,
             BytesCodec,
             crate::fn_service(|msg: DispatchItem<BytesCodec>| async move {
-                delay_for(Duration::from_millis(50)).await;
+                sleep(Duration::from_millis(50)).await;
                 if let DispatchItem::Item(msg) = msg {
                     Ok::<_, ()>(Some(msg.freeze()))
                 } else {
@@ -596,7 +596,7 @@ mod tests {
         assert_eq!(buf, Bytes::from_static(b"test"));
 
         st.close();
-        delay_for(Duration::from_millis(200)).await;
+        sleep(Duration::from_millis(200)).await;
         assert!(client.is_server_dropped());
     }
 
@@ -624,7 +624,7 @@ mod tests {
 
         let buf = client.read_any();
         assert_eq!(buf, Bytes::from_static(b""));
-        delay_for(Duration::from_millis(25)).await;
+        sleep(Duration::from_millis(25)).await;
 
         // buffer should be flushed
         client.remote_buffer_cap(1024);
@@ -682,7 +682,7 @@ mod tests {
         let buf = client.read_any();
         assert_eq!(buf, Bytes::from_static(b""));
         client.write("GET /test HTTP/1\r\n\r\n");
-        delay_for(Duration::from_millis(25)).await;
+        sleep(Duration::from_millis(25)).await;
 
         // buf must be consumed
         assert_eq!(client.remote_buffer(|buf| buf.len()), 0);
@@ -692,11 +692,11 @@ mod tests {
         assert_eq!(state.with_write_buf(|buf| buf.len()), 65536);
 
         client.remote_buffer_cap(10240);
-        delay_for(Duration::from_millis(50)).await;
+        sleep(Duration::from_millis(50)).await;
         assert_eq!(state.with_write_buf(|buf| buf.len()), 55296);
 
         client.remote_buffer_cap(45056);
-        delay_for(Duration::from_millis(50)).await;
+        sleep(Duration::from_millis(50)).await;
         assert_eq!(state.with_write_buf(|buf| buf.len()), 10240);
 
         // backpressure disabled
@@ -740,7 +740,7 @@ mod tests {
 
         let buf = client.read().await.unwrap();
         assert_eq!(buf, Bytes::from_static(b"GET /test HTTP/1\r\n\r\n"));
-        delay_for(Duration::from_millis(3100)).await;
+        sleep(Duration::from_millis(3100)).await;
 
         // write side must be closed, dispatcher should fail with keep-alive
         let flags = state.flags();
diff --git a/ntex/src/framed/time.rs b/ntex/src/framed/time.rs
index f302797f..2f2a5c41 100644
--- a/ntex/src/framed/time.rs
+++ b/ntex/src/framed/time.rs
@@ -3,7 +3,7 @@ use std::{cell::RefCell, collections::BTreeMap, rc::Rc, time::Duration, time::In
 use futures::future::{ready, FutureExt};
 
 use crate::framed::State;
-use crate::rt::time::delay_for;
+use crate::rt::time::sleep;
 use crate::util::HashSet;
 
 pub struct Timer(Rc<RefCell<Inner>>);
@@ -84,7 +84,7 @@ impl Timer {
                 b.resolution
             };
 
-            crate::rt::spawn(delay_for(interval).then(move |_| {
+            crate::rt::spawn(sleep(interval).then(move |_| {
                 let empty = {
                     let mut i = inner.borrow_mut();
                     let now = i.current.take().unwrap_or_else(Instant::now);
diff --git a/ntex/src/http/client/pool.rs b/ntex/src/http/client/pool.rs
index 3563a2bb..6c35ca6a 100644
--- a/ntex/src/http/client/pool.rs
+++ b/ntex/src/http/client/pool.rs
@@ -9,7 +9,7 @@ use http::uri::Authority;
 use crate::channel::pool;
 use crate::codec::{AsyncRead, AsyncWrite, ReadBuf};
 use crate::http::Protocol;
-use crate::rt::{spawn, time::delay_for, time::Delay};
+use crate::rt::{spawn, time::sleep, time::Sleep};
 use crate::service::Service;
 use crate::task::LocalWaker;
 use crate::util::{Bytes, HashMap};
@@ -366,10 +366,13 @@ where
     }
 }
 
-struct CloseConnection<T> {
-    io: T,
-    timeout: Option<Pin<Box<Delay>>>,
-    shutdown: bool,
+pin_project_lite::pin_project! {
+    struct CloseConnection<T> {
+        io: T,
+        #[pin]
+        timeout: Option<Sleep>,
+        shutdown: bool,
+    }
 }
 
 impl<T> CloseConnection<T>
@@ -378,7 +381,7 @@ where
 {
     fn spawn(io: T, timeout: Duration) {
         let timeout = if timeout != ZERO {
-            Some(Box::pin(delay_for(timeout)))
+            Some(sleep(timeout))
         } else {
             None
         };
@@ -397,18 +400,18 @@ where
     type Output = ();
 
     fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<()> {
-        let this = self.get_mut();
+        let mut this = self.project();
 
         // shutdown WRITE side
         match Pin::new(&mut this.io).poll_shutdown(cx) {
-            Poll::Ready(Ok(())) => this.shutdown = true,
+            Poll::Ready(Ok(())) => *this.shutdown = true,
             Poll::Pending => return Poll::Pending,
             Poll::Ready(Err(_)) => return Poll::Ready(()),
         }
 
         // read until 0 or err
-        if let Some(ref mut timeout) = this.timeout {
-            match Pin::new(timeout).poll(cx) {
+        if let Some(timeout) = this.timeout.as_pin_mut() {
+            match timeout.poll(cx) {
                 Poll::Ready(_) => (),
                 Poll::Pending => {
                     let mut buf = [0u8; 512];
@@ -609,7 +612,7 @@ mod tests {
     use super::*;
     use crate::http::client::Connection;
     use crate::http::Uri;
-    use crate::rt::time::delay_for;
+    use crate::rt::time::sleep;
     use crate::service::fn_service;
     use crate::testing::Io;
 
@@ -667,7 +670,7 @@ mod tests {
         let mut fut = pool.call(req.clone());
         assert!(lazy(|cx| Pin::new(&mut fut).poll(cx)).await.is_pending());
         drop(fut);
-        delay_for(Duration::from_millis(50)).await;
+        sleep(Duration::from_millis(50)).await;
         pool.1.borrow_mut().check_availibility();
         assert!(pool.1.borrow().waiters.is_empty());
 
diff --git a/ntex/src/http/client/sender.rs b/ntex/src/http/client/sender.rs
index 52bd73f5..b15afeda 100644
--- a/ntex/src/http/client/sender.rs
+++ b/ntex/src/http/client/sender.rs
@@ -14,7 +14,7 @@ use crate::http::body::{Body, BodyStream};
 use crate::http::error::HttpError;
 use crate::http::header::{self, HeaderMap, HeaderName, HeaderValue};
 use crate::http::RequestHeadType;
-use crate::rt::time::{delay_for, Delay};
+use crate::rt::time::{sleep, Sleep};
 
 #[cfg(feature = "compress")]
 use crate::http::encoding::Decoder;
@@ -54,7 +54,7 @@ impl From<PrepForSendingError> for SendRequestError {
 pub enum SendClientRequest {
     Fut(
         Pin<Box<dyn Future<Output = Result<ClientResponse, SendRequestError>>>>,
-        Option<Pin<Box<Delay>>>,
+        Option<Pin<Box<Sleep>>>,
         bool,
     ),
     Err(Option<SendRequestError>),
@@ -66,7 +66,7 @@ impl SendClientRequest {
         response_decompress: bool,
         timeout: Option<Duration>,
     ) -> SendClientRequest {
-        let delay = timeout.map(|d| Box::pin(delay_for(d)));
+        let delay = timeout.map(|d| Box::pin(sleep(d)));
         SendClientRequest::Fut(send, delay, response_decompress)
     }
 }
diff --git a/ntex/src/http/config.rs b/ntex/src/http/config.rs
index bfcc3070..c496c209 100644
--- a/ntex/src/http/config.rs
+++ b/ntex/src/http/config.rs
@@ -5,7 +5,7 @@ use futures::{future, FutureExt};
 use time::OffsetDateTime;
 
 use crate::framed::Timer;
-use crate::rt::time::{delay_for, delay_until, Delay, Instant};
+use crate::rt::time::{sleep, sleep_until, Instant, Sleep};
 
 #[derive(Debug, PartialEq, Clone, Copy)]
 /// Server keep-alive setting
@@ -127,10 +127,10 @@ impl<S, X, U> DispatcherConfig<S, X, U> {
         self.ka_enabled
     }
 
-    /// Return keep-alive timer delay is configured.
-    pub(super) fn keep_alive_timer(&self) -> Option<Delay> {
+    /// Return keep-alive timer Sleep is configured.
+    pub(super) fn keep_alive_timer(&self) -> Option<Sleep> {
         if self.keep_alive.as_secs() != 0 {
-            Some(delay_until(self.timer.now() + self.keep_alive))
+            Some(sleep_until(self.timer.now() + self.keep_alive))
         } else {
             None
         }
@@ -203,7 +203,7 @@ impl DateService {
 
             // periodic date update
             let s = self.clone();
-            crate::rt::spawn(delay_for(Duration::from_millis(500)).then(move |_| {
+            crate::rt::spawn(sleep(Duration::from_millis(500)).then(move |_| {
                 s.0.current.set(false);
                 future::ready(())
             }));
diff --git a/ntex/src/http/h1/dispatcher.rs b/ntex/src/http/h1/dispatcher.rs
index d118ff88..489f4e57 100644
--- a/ntex/src/http/h1/dispatcher.rs
+++ b/ntex/src/http/h1/dispatcher.rs
@@ -670,7 +670,7 @@ mod tests {
     use crate::http::config::{DispatcherConfig, ServiceConfig};
     use crate::http::h1::{ClientCodec, ExpectHandler, UpgradeHandler};
     use crate::http::{body, Request, ResponseHead, StatusCode};
-    use crate::rt::time::delay_for;
+    use crate::rt::time::sleep;
     use crate::service::IntoService;
     use crate::testing::Io;
 
@@ -735,11 +735,11 @@ mod tests {
         client.write("GET /test HTTP/1\r\n\r\n");
 
         let mut h1 = h1(server, |_| ok::<_, io::Error>(Response::Ok().finish()));
-        delay_for(time::Duration::from_millis(50)).await;
+        sleep(time::Duration::from_millis(50)).await;
 
         assert!(lazy(|cx| Pin::new(&mut h1).poll(cx)).await.is_ready());
         assert!(!h1.inner.state.is_open());
-        delay_for(time::Duration::from_millis(50)).await;
+        sleep(time::Duration::from_millis(50)).await;
 
         client
             .local_buffer(|buf| assert_eq!(&buf[..26], b"HTTP/1.1 400 Bad Request\r\n"));
@@ -788,7 +788,7 @@ mod tests {
         });
 
         client.write("GET /test HTTP/1.1\r\ncontent-length: 5\r\n\r\n");
-        delay_for(time::Duration::from_millis(50)).await;
+        sleep(time::Duration::from_millis(50)).await;
         client.write("xxxxx");
 
         let mut buf = client.read().await.unwrap();
@@ -812,7 +812,7 @@ mod tests {
         client.remote_buffer_cap(4096);
         let mut decoder = ClientCodec::default();
         spawn_h1(server, |_| async {
-            delay_for(time::Duration::from_millis(100)).await;
+            sleep(time::Duration::from_millis(100)).await;
             Ok::<_, io::Error>(Response::Ok().finish())
         });
 
@@ -824,7 +824,7 @@ mod tests {
 
         client.write("GET /test HTTP/1.1\r\n\r\n");
         client.write("GET /test HTTP/1.1\r\n\r\n");
-        delay_for(time::Duration::from_millis(50)).await;
+        sleep(time::Duration::from_millis(50)).await;
         client.write("GET /test HTTP/1.1\r\n\r\n");
 
         let mut buf = client.read().await.unwrap();
@@ -885,10 +885,10 @@ mod tests {
             .collect::<String>();
         client.write("GET /test HTTP/1.1\r\nContent-Length: ");
         client.write(data);
-        delay_for(time::Duration::from_millis(50)).await;
+        sleep(time::Duration::from_millis(50)).await;
 
         assert!(lazy(|cx| Pin::new(&mut h1).poll(cx)).await.is_pending());
-        delay_for(time::Duration::from_millis(50)).await;
+        sleep(time::Duration::from_millis(50)).await;
         assert!(lazy(|cx| Pin::new(&mut h1).poll(cx)).await.is_ready());
         assert!(!h1.inner.state.is_open());
 
@@ -911,13 +911,13 @@ mod tests {
                 let _ = pl.next().await.unwrap().unwrap();
                 m.store(true, Ordering::Relaxed);
                 // sleep
-                delay_for(time::Duration::from_secs(999_999)).await;
+                sleep(time::Duration::from_secs(999_999)).await;
                 Ok::<_, io::Error>(Response::Ok().finish())
             }
         });
 
         client.write("GET /test HTTP/1.1\r\nContent-Length: 1048576\r\n\r\n");
-        delay_for(time::Duration::from_millis(50)).await;
+        sleep(time::Duration::from_millis(50)).await;
 
         // buf must be consumed
         assert_eq!(client.remote_buffer(|buf| buf.len()), 0);
@@ -927,7 +927,7 @@ mod tests {
             (0..1_048_576).map(|_| rand::random::<u8>()).collect();
         client.write(random_bytes);
 
-        delay_for(time::Duration::from_millis(50)).await;
+        sleep(time::Duration::from_millis(50)).await;
         assert!(client.remote_buffer(|buf| buf.len()) > 1_048_576 - BUFFER_SIZE * 3);
         assert!(mark.load(Ordering::Relaxed));
     }
@@ -969,7 +969,7 @@ mod tests {
         // do not allow to write to socket
         client.remote_buffer_cap(0);
         client.write("GET /test HTTP/1.1\r\n\r\n");
-        delay_for(time::Duration::from_millis(50)).await;
+        sleep(time::Duration::from_millis(50)).await;
         assert!(lazy(|cx| Pin::new(&mut h1).poll(cx)).await.is_pending());
 
         // buf must be consumed
@@ -982,7 +982,7 @@ mod tests {
         assert_eq!(state.with_write_buf(|buf| buf.len()), 65629);
 
         client.remote_buffer_cap(65536);
-        delay_for(time::Duration::from_millis(50)).await;
+        sleep(time::Duration::from_millis(50)).await;
         assert_eq!(state.with_write_buf(|buf| buf.len()), 93);
 
         assert!(lazy(|cx| Pin::new(&mut h1).poll(cx)).await.is_pending());
@@ -1022,7 +1022,7 @@ mod tests {
         });
 
         client.write("GET /test HTTP/1.1\r\n\r\n");
-        delay_for(time::Duration::from_millis(50)).await;
+        sleep(time::Duration::from_millis(50)).await;
         assert!(lazy(|cx| Pin::new(&mut h1).poll(cx)).await.is_pending());
 
         // http message must be consumed
@@ -1034,7 +1034,7 @@ mod tests {
         assert!(lazy(|cx| Pin::new(&mut h1).poll(cx)).await.is_pending());
 
         client.close().await;
-        delay_for(time::Duration::from_millis(50)).await;
+        sleep(time::Duration::from_millis(50)).await;
         assert!(lazy(|cx| Pin::new(&mut h1).poll(cx)).await.is_ready());
     }
 }
diff --git a/ntex/src/http/h2/dispatcher.rs b/ntex/src/http/h2/dispatcher.rs
index 5cb34bd8..68103c74 100644
--- a/ntex/src/http/h2/dispatcher.rs
+++ b/ntex/src/http/h2/dispatcher.rs
@@ -18,7 +18,7 @@ use crate::http::message::ResponseHead;
 use crate::http::payload::Payload;
 use crate::http::request::Request;
 use crate::http::response::Response;
-use crate::rt::time::{Delay, Instant};
+use crate::rt::time::{Instant, Sleep};
 use crate::Service;
 
 const CHUNK_SIZE: usize = 16_384;
@@ -31,7 +31,7 @@ pin_project_lite::pin_project! {
         on_connect: Option<Box<dyn DataFactory>>,
         peer_addr: Option<net::SocketAddr>,
         ka_expire: Instant,
-        ka_timer: Option<Delay>,
+        ka_timer: Option<Sleep>,
         _t: PhantomData<B>,
     }
 }
@@ -48,7 +48,7 @@ where
         config: Rc<DispatcherConfig<S, X, U>>,
         connection: Connection<T, Bytes>,
         on_connect: Option<Box<dyn DataFactory>>,
-        timeout: Option<Delay>,
+        timeout: Option<Sleep>,
         peer_addr: Option<net::SocketAddr>,
     ) -> Self {
         // keep-alive timer
diff --git a/ntex/src/server/accept.rs b/ntex/src/server/accept.rs
index 9ec56dce..924a097a 100644
--- a/ntex/src/server/accept.rs
+++ b/ntex/src/server/accept.rs
@@ -3,7 +3,7 @@ use std::{io, sync::mpsc as sync_mpsc, sync::Arc, thread, time::Duration};
 use log::{error, info};
 use slab::Slab;
 
-use crate::rt::time::{delay_until, Instant};
+use crate::rt::time::{sleep_until, Instant};
 use crate::rt::System;
 
 use super::socket::{Listener, SocketAddr};
@@ -415,7 +415,7 @@ impl Accept {
 
                         let notify = self.notify.clone();
                         System::current().arbiter().spawn(Box::pin(async move {
-                            delay_until(Instant::now() + Duration::from_millis(510))
+                            sleep_until(Instant::now() + Duration::from_millis(510))
                                 .await;
                             notify.send(Command::Timer);
                         }));
diff --git a/ntex/src/server/builder.rs b/ntex/src/server/builder.rs
index 0308926c..e37ed8ec 100644
--- a/ntex/src/server/builder.rs
+++ b/ntex/src/server/builder.rs
@@ -12,7 +12,7 @@ use log::{error, info};
 use socket2::{Domain, SockAddr, Socket, Type};
 
 use crate::rt::net::TcpStream;
-use crate::rt::time::{delay_until, Instant};
+use crate::rt::time::{sleep_until, Instant};
 use crate::rt::{spawn, System};
 
 use super::accept::{AcceptLoop, AcceptNotify, Command};
@@ -385,7 +385,7 @@ impl ServerBuilder {
                                 if exit {
                                     spawn(
                                         async {
-                                            delay_until(
+                                            sleep_until(
                                                 Instant::now()
                                                     + Duration::from_millis(300),
                                             )
@@ -402,7 +402,7 @@ impl ServerBuilder {
                     // we need to stop system if server was spawned
                     if self.exit {
                         spawn(
-                            delay_until(Instant::now() + Duration::from_millis(300))
+                            sleep_until(Instant::now() + Duration::from_millis(300))
                                 .then(|_| {
                                     System::current().stop();
                                     ready(())
diff --git a/ntex/src/server/openssl.rs b/ntex/src/server/openssl.rs
index 1c9a3819..460bcbc9 100644
--- a/ntex/src/server/openssl.rs
+++ b/ntex/src/server/openssl.rs
@@ -12,7 +12,7 @@ pub use tokio_openssl::SslStream;
 use futures::future::{ok, FutureExt, LocalBoxFuture, Ready};
 
 use crate::codec::{AsyncRead, AsyncWrite};
-use crate::rt::time::{delay_for, Delay};
+use crate::rt::time::{sleep, Sleep};
 use crate::service::{Service, ServiceFactory};
 use crate::util::counter::{Counter, CounterGuard};
 
@@ -114,7 +114,7 @@ where
             delay: if self.timeout == ZERO {
                 None
             } else {
-                Some(Box::pin(delay_for(self.timeout)))
+                Some(sleep(self.timeout))
             },
             fut: async move {
                 let mut io = SslStream::new(ssl, req)?;
@@ -129,21 +129,27 @@ where
     }
 }
 
-pub struct AcceptorServiceResponse<T>
-where
-    T: AsyncRead + AsyncWrite,
-{
-    fut: LocalBoxFuture<'static, Result<SslStream<T>, Box<dyn Error>>>,
-    delay: Option<Pin<Box<Delay>>>,
-    _guard: CounterGuard,
+pin_project_lite::pin_project! {
+    pub struct AcceptorServiceResponse<T>
+    where
+        T: AsyncRead,
+        T: AsyncWrite,
+    {
+        fut: LocalBoxFuture<'static, Result<SslStream<T>, Box<dyn Error>>>,
+        #[pin]
+        delay: Option<Sleep>,
+        _guard: CounterGuard,
+    }
 }
 
 impl<T: AsyncRead + AsyncWrite + Unpin> Future for AcceptorServiceResponse<T> {
     type Output = Result<SslStream<T>, Box<dyn Error>>;
 
-    fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
-        if let Some(ref mut delay) = self.delay {
-            match Pin::new(delay).poll(cx) {
+    fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
+        let mut this = self.project();
+
+        if let Some(delay) = this.delay.as_pin_mut() {
+            match delay.poll(cx) {
                 Poll::Pending => (),
                 Poll::Ready(_) => {
                     return Poll::Ready(Err(Box::new(io::Error::new(
@@ -154,7 +160,7 @@ impl<T: AsyncRead + AsyncWrite + Unpin> Future for AcceptorServiceResponse<T> {
             }
         }
 
-        let io = futures::ready!(Pin::new(&mut self.fut).poll(cx))?;
+        let io = futures::ready!(Pin::new(&mut this.fut).poll(cx))?;
         Poll::Ready(Ok(io))
     }
 }
diff --git a/ntex/src/server/rustls.rs b/ntex/src/server/rustls.rs
index b1918746..dbcfca5f 100644
--- a/ntex/src/server/rustls.rs
+++ b/ntex/src/server/rustls.rs
@@ -106,29 +106,34 @@ impl<T: AsyncRead + AsyncWrite + Unpin> Service for AcceptorService<T> {
             delay: if self.timeout == ZERO {
                 None
             } else {
-                Some(Box::pin(sleep(self.timeout)))
+                Some(sleep(self.timeout))
             },
         }
     }
 }
 
-pub struct AcceptorServiceFut<T>
-where
-    T: AsyncRead + AsyncWrite + Unpin,
-{
-    fut: Accept<T>,
-    delay: Option<Pin<Box<Sleep>>>,
-    _guard: CounterGuard,
+pin_project_lite::pin_project! {
+    pub struct AcceptorServiceFut<T>
+    where
+        T: AsyncRead,
+        T: AsyncWrite,
+        T: Unpin,
+    {
+        fut: Accept<T>,
+        #[pin]
+        delay: Option<Sleep>,
+        _guard: CounterGuard,
+    }
 }
 
 impl<T: AsyncRead + AsyncWrite + Unpin> Future for AcceptorServiceFut<T> {
     type Output = Result<TlsStream<T>, Box<dyn Error>>;
 
     fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
-        let this = self.get_mut();
+        let mut this = self.project();
 
-        if let Some(ref mut delay) = this.delay {
-            match Pin::new(delay).poll(cx) {
+        if let Some(delay) = this.delay.as_pin_mut() {
+            match delay.poll(cx) {
                 Poll::Pending => (),
                 Poll::Ready(_) => {
                     return Poll::Ready(Err(Box::new(io::Error::new(
diff --git a/ntex/src/server/worker.rs b/ntex/src/server/worker.rs
index 53b29a75..b7f75873 100644
--- a/ntex/src/server/worker.rs
+++ b/ntex/src/server/worker.rs
@@ -7,7 +7,7 @@ use futures::channel::oneshot;
 use futures::future::{join_all, LocalBoxFuture, MapOk};
 use futures::{Future, FutureExt, Stream as StdStream, TryFutureExt};
 
-use crate::rt::time::{delay_until, Delay, Instant};
+use crate::rt::time::{sleep_until, Instant, Sleep};
 use crate::rt::{spawn, Arbiter};
 use crate::util::counter::Counter;
 
@@ -320,8 +320,8 @@ enum WorkerState {
         Pin<Box<dyn Future<Output = Result<Vec<(Token, BoxedServerService)>, ()>>>>,
     ),
     Shutdown(
-        Pin<Box<Delay>>,
-        Pin<Box<Delay>>,
+        Pin<Box<Sleep>>,
+        Pin<Box<Sleep>>,
         Option<oneshot::Sender<bool>>,
     ),
 }
@@ -346,10 +346,10 @@ impl Future for Worker {
                 if num != 0 {
                     info!("Graceful worker shutdown, {} connections", num);
                     self.state = WorkerState::Shutdown(
-                        Box::pin(delay_until(
+                        Box::pin(sleep_until(
                             Instant::now() + time::Duration::from_secs(1),
                         )),
-                        Box::pin(delay_until(Instant::now() + self.shutdown_timeout)),
+                        Box::pin(sleep_until(Instant::now() + self.shutdown_timeout)),
                         Some(result),
                     );
                 } else {
@@ -437,7 +437,7 @@ impl Future for Worker {
                 match t1.as_mut().poll(cx) {
                     Poll::Pending => (),
                     Poll::Ready(_) => {
-                        *t1 = Box::pin(delay_until(
+                        *t1 = Box::pin(sleep_until(
                             Instant::now() + time::Duration::from_secs(1),
                         ));
                         let _ = t1.as_mut().poll(cx);
diff --git a/ntex/src/testing.rs b/ntex/src/testing.rs
index d50501a3..9c244741 100644
--- a/ntex/src/testing.rs
+++ b/ntex/src/testing.rs
@@ -9,7 +9,7 @@ use futures::future::poll_fn;
 use futures::task::AtomicWaker;
 
 use crate::codec::{AsyncRead, AsyncWrite, ReadBuf};
-use crate::rt::time::delay_for;
+use crate::rt::time::sleep;
 
 /// Async io stream
 #[derive(Debug)]
@@ -156,7 +156,7 @@ impl Io {
             remote.read = IoState::Close;
             remote.waker.wake();
         }
-        delay_for(time::Duration::from_millis(35)).await;
+        sleep(time::Duration::from_millis(35)).await;
     }
 
     /// Add extra data to the remote buffer and notify reader
diff --git a/ntex/src/util/inflight.rs b/ntex/src/util/inflight.rs
index d4596b89..5b85a1aa 100644
--- a/ntex/src/util/inflight.rs
+++ b/ntex/src/util/inflight.rs
@@ -140,7 +140,7 @@ mod tests {
         }
 
         fn call(&self, _: ()) -> Self::Future {
-            crate::rt::time::delay_for(self.0)
+            crate::rt::time::sleep(self.0)
                 .then(|_| ok::<_, ()>(()))
                 .boxed_local()
         }
diff --git a/ntex/src/util/keepalive.rs b/ntex/src/util/keepalive.rs
index e201dd4d..034da189 100644
--- a/ntex/src/util/keepalive.rs
+++ b/ntex/src/util/keepalive.rs
@@ -8,7 +8,7 @@ use std::time::Duration;
 
 use futures::future::{ok, Ready};
 
-use crate::rt::time::{delay_until, Delay, Instant};
+use crate::rt::time::{sleep_until, Instant, Sleep};
 use crate::{Service, ServiceFactory};
 
 use super::time::{LowResTime, LowResTimeService};
@@ -85,7 +85,7 @@ pub struct KeepAliveService<R, E, F> {
 }
 
 struct Inner {
-    delay: Pin<Box<Delay>>,
+    delay: Pin<Box<Sleep>>,
     expire: Instant,
 }
 
@@ -101,7 +101,7 @@ where
             time,
             inner: RefCell::new(Inner {
                 expire,
-                delay: Box::pin(delay_until(expire)),
+                delay: Box::pin(sleep_until(expire)),
             }),
             _t: PhantomData,
         }
@@ -147,7 +147,7 @@ mod tests {
     use futures::future::lazy;
 
     use super::*;
-    use crate::rt::time::delay_for;
+    use crate::rt::time::sleep;
     use crate::service::{Service, ServiceFactory};
 
     #[derive(Debug, PartialEq)]
@@ -167,7 +167,7 @@ mod tests {
         assert_eq!(service.call(1usize).await, Ok(1usize));
         assert!(lazy(|cx| service.poll_ready(cx)).await.is_ready());
 
-        delay_for(Duration::from_millis(500)).await;
+        sleep(Duration::from_millis(500)).await;
         assert_eq!(
             lazy(|cx| service.poll_ready(cx)).await,
             Poll::Ready(Err(TestErr))
diff --git a/ntex/src/util/stream.rs b/ntex/src/util/stream.rs
index 4addebac..77ec7f6e 100644
--- a/ntex/src/util/stream.rs
+++ b/ntex/src/util/stream.rs
@@ -163,7 +163,7 @@ mod tests {
     use super::*;
     use crate::channel::mpsc;
     use crate::codec::Encoder;
-    use crate::rt::time::delay_for;
+    use crate::rt::time::sleep;
     use crate::ws;
 
     #[crate::rt_test]
@@ -197,7 +197,7 @@ mod tests {
         assert_eq!(data, b"\x81\x04test".as_ref());
 
         drop(tx);
-        delay_for(Duration::from_millis(10)).await;
+        sleep(Duration::from_millis(10)).await;
         assert!(rx.next().await.is_none());
 
         assert_eq!(counter.get(), 1);
diff --git a/ntex/src/util/time.rs b/ntex/src/util/time.rs
index 8ad34e41..bcbb3dcd 100644
--- a/ntex/src/util/time.rs
+++ b/ntex/src/util/time.rs
@@ -6,7 +6,7 @@ use std::time::{self, Duration, Instant};
 
 use futures::future::{ok, ready, FutureExt, Ready};
 
-use crate::rt::time::delay_for;
+use crate::rt::time::sleep;
 use crate::service::{Service, ServiceFactory};
 
 #[derive(Clone, Debug)]
@@ -81,7 +81,7 @@ impl LowResTimeService {
                 b.resolution
             };
 
-            crate::rt::spawn(delay_for(interval).then(move |_| {
+            crate::rt::spawn(sleep(interval).then(move |_| {
                 inner.borrow_mut().current.take();
                 ready(())
             }));
@@ -148,7 +148,7 @@ impl SystemTimeService {
                 b.resolution
             };
 
-            crate::rt::spawn(delay_for(interval).then(move |_| {
+            crate::rt::spawn(sleep(interval).then(move |_| {
                 inner.borrow_mut().current.take();
                 ready(())
             }));
@@ -208,7 +208,7 @@ mod tests {
             .duration_since(SystemTime::UNIX_EPOCH)
             .unwrap();
 
-        delay_for(wait_time).await;
+        sleep(wait_time).await;
 
         let second_time = time_service
             .now()
@@ -230,7 +230,7 @@ mod tests {
 
         let first_time = time_service.now();
 
-        delay_for(wait_time).await;
+        sleep(wait_time).await;
 
         let second_time = time_service.now();
         assert!(second_time - first_time >= wait_time);
diff --git a/ntex/src/util/timeout.rs b/ntex/src/util/timeout.rs
index 86b6fea9..1311eef0 100644
--- a/ntex/src/util/timeout.rs
+++ b/ntex/src/util/timeout.rs
@@ -10,7 +10,7 @@ use std::{fmt, time};
 
 use futures::future::{ok, Either, Ready};
 
-use crate::rt::time::{delay_for, Delay};
+use crate::rt::time::{sleep, Sleep};
 use crate::service::{IntoService, Service, Transform};
 
 const ZERO: time::Duration = time::Duration::from_millis(0);
@@ -154,21 +154,21 @@ where
         } else {
             Either::Left(TimeoutServiceResponse {
                 fut: self.service.call(request),
-                sleep: Box::pin(delay_for(self.timeout)),
+                sleep: Box::pin(sleep(self.timeout)),
             })
         }
     }
 }
 
 pin_project_lite::pin_project! {
-/// `TimeoutService` response future
-#[doc(hidden)]
-#[derive(Debug)]
-pub struct TimeoutServiceResponse<T: Service> {
-    #[pin]
-    fut: T::Future,
-    sleep: Pin<Box<Delay>>,
-}
+    /// `TimeoutService` response future
+    #[doc(hidden)]
+    #[derive(Debug)]
+    pub struct TimeoutServiceResponse<T: Service> {
+        #[pin]
+        fut: T::Future,
+        sleep: Pin<Box<Sleep>>,
+    }
 }
 
 impl<T> Future for TimeoutServiceResponse<T>
@@ -255,7 +255,7 @@ mod tests {
         }
 
         fn call(&self, _: ()) -> Self::Future {
-            crate::rt::time::delay_for(self.0)
+            crate::rt::time::sleep(self.0)
                 .then(|_| ok::<_, SrvError>(()))
                 .boxed_local()
         }
diff --git a/ntex/src/web/resource.rs b/ntex/src/web/resource.rs
index 13bbde3f..f931a263 100644
--- a/ntex/src/web/resource.rs
+++ b/ntex/src/web/resource.rs
@@ -538,7 +538,7 @@ mod tests {
 
     use crate::http::header::{self, HeaderValue};
     use crate::http::{Method, StatusCode};
-    use crate::rt::time::delay_for;
+    use crate::rt::time::sleep;
     use crate::web::middleware::DefaultHeaders;
     use crate::web::request::WebRequest;
     use crate::web::test::{call_service, init_service, TestRequest};
@@ -603,7 +603,7 @@ mod tests {
     async fn test_to() {
         let srv =
             init_service(App::new().service(web::resource("/test").to(|| async {
-                delay_for(Duration::from_millis(100)).await;
+                sleep(Duration::from_millis(100)).await;
                 HttpResponse::Ok()
             })))
             .await;
diff --git a/ntex/src/web/route.rs b/ntex/src/web/route.rs
index e7f7e1dc..fcf3acd7 100644
--- a/ntex/src/web/route.rs
+++ b/ntex/src/web/route.rs
@@ -285,7 +285,7 @@ mod tests {
     use serde_derive::Serialize;
 
     use crate::http::{Method, StatusCode};
-    use crate::rt::time::delay_for;
+    use crate::rt::time::sleep;
     use crate::web::test::{call_service, init_service, read_body, TestRequest};
     use crate::web::{self, error, App, DefaultError, HttpResponse};
 
@@ -306,16 +306,16 @@ mod tests {
                         )
                     }),
                     web::post().to(|| async {
-                        delay_for(Duration::from_millis(100)).await;
+                        sleep(Duration::from_millis(100)).await;
                         HttpResponse::Created()
                     }),
                     web::delete().to(|| async {
-                        delay_for(Duration::from_millis(100)).await;
+                        sleep(Duration::from_millis(100)).await;
                         Err::<HttpResponse, _>(error::ErrorBadRequest("err"))
                     }),
                 ]))
                 .service(web::resource("/json").route(web::get().to(|| async {
-                    delay_for(Duration::from_millis(25)).await;
+                    sleep(Duration::from_millis(25)).await;
                     web::types::Json(MyObject {
                         name: "test".to_string(),
                     })
diff --git a/ntex/src/web/test.rs b/ntex/src/web/test.rs
index a24b4d36..386afc8f 100644
--- a/ntex/src/web/test.rs
+++ b/ntex/src/web/test.rs
@@ -22,7 +22,7 @@ use crate::http::header::{HeaderName, HeaderValue, CONTENT_TYPE};
 use crate::http::test::TestRequest as HttpTestRequest;
 use crate::http::{HttpService, Method, Payload, Request, StatusCode, Uri, Version};
 use crate::router::{Path, ResourceDef};
-use crate::rt::{time::delay_for, System};
+use crate::rt::{time::sleep, System};
 use crate::server::Server;
 use crate::util::Extensions;
 use crate::{map_config, IntoService, IntoServiceFactory, Service, ServiceFactory};
@@ -955,7 +955,7 @@ impl TestServer {
     pub async fn stop(self) {
         self.server.stop(true).await;
         self.system.stop();
-        delay_for(time::Duration::from_millis(100)).await;
+        sleep(time::Duration::from_millis(100)).await;
     }
 }
 
diff --git a/ntex/tests/http_awc_client.rs b/ntex/tests/http_awc_client.rs
index 285ee466..efa9cf0e 100644
--- a/ntex/tests/http_awc_client.rs
+++ b/ntex/tests/http_awc_client.rs
@@ -169,7 +169,7 @@ async fn test_form() {
 async fn test_timeout() {
     let srv = test::server(|| {
         App::new().service(web::resource("/").route(web::to(|| async {
-            ntex::rt::time::delay_for(Duration::from_millis(200)).await;
+            ntex::rt::time::sleep(Duration::from_millis(200)).await;
             HttpResponse::Ok().body(STR)
         })))
     });
@@ -198,7 +198,7 @@ async fn test_timeout() {
 async fn test_timeout_override() {
     let srv = test::server(|| {
         App::new().service(web::resource("/").route(web::to(|| async {
-            ntex::rt::time::delay_for(Duration::from_millis(200)).await;
+            ntex::rt::time::sleep(Duration::from_millis(200)).await;
             HttpResponse::Ok().body(STR)
         })))
     });
@@ -841,7 +841,7 @@ async fn client_read_until_eof() {
                 .write_all(b"HTTP/1.0 200 OK\r\nconnection: close\r\n\r\nwelcome!");
         }
     });
-    ntex::rt::time::delay_for(Duration::from_millis(300)).await;
+    ntex::rt::time::sleep(Duration::from_millis(300)).await;
 
     // client request
     let req = Client::build()
diff --git a/ntex/tests/http_server.rs b/ntex/tests/http_server.rs
index 6410b8dd..c1e3b77b 100644
--- a/ntex/tests/http_server.rs
+++ b/ntex/tests/http_server.rs
@@ -11,7 +11,7 @@ use ntex::http::test::server as test_server;
 use ntex::http::{
     body, header, HttpService, KeepAlive, Method, Request, Response, StatusCode,
 };
-use ntex::rt::time::delay_for;
+use ntex::rt::time::sleep;
 use ntex::service::fn_service;
 use ntex::web::error;
 
@@ -92,7 +92,7 @@ async fn test_expect_continue_h1() {
     let srv = test_server(|| {
         HttpService::build()
             .expect(fn_service(|req: Request| {
-                delay_for(Duration::from_millis(20)).then(move |_| {
+                sleep(Duration::from_millis(20)).then(move |_| {
                     if req.head().uri.query() == Some("yes=") {
                         ok(req)
                     } else {