diff --git a/Cargo.toml b/Cargo.toml
index 533fbc17..342f866a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -27,3 +27,7 @@ actix-tracing = { path = "actix-tracing" }
 actix-utils = { path = "actix-utils" }
 actix-router = { path = "router" }
 bytestring = { path = "string" }
+
+# FIXME: remove override
+trust-dns-proto = { git = "https://github.com/bluejekyll/trust-dns.git", branch = "main" }
+trust-dns-resolver = { git = "https://github.com/bluejekyll/trust-dns.git", branch = "main" }
\ No newline at end of file
diff --git a/actix-threadpool/Cargo.toml b/actix-threadpool/Cargo.toml
index 5998bae7..3a633d62 100644
--- a/actix-threadpool/Cargo.toml
+++ b/actix-threadpool/Cargo.toml
@@ -19,7 +19,7 @@ path = "src/lib.rs"
 
 [dependencies]
 derive_more = "0.99.2"
-futures-channel = "0.3.1"
+futures-channel = "0.3.7"
 parking_lot = "0.11"
 lazy_static = "1.3"
 log = "0.4"
diff --git a/actix-tls/Cargo.toml b/actix-tls/Cargo.toml
index af0b4238..1c24e0eb 100644
--- a/actix-tls/Cargo.toml
+++ b/actix-tls/Cargo.toml
@@ -12,7 +12,7 @@ license = "MIT OR Apache-2.0"
 edition = "2018"
 
 [package.metadata.docs.rs]
-features = ["openssl", "rustls", "native-tls", "accept", "connect", "http"]
+features = ["openssl", "rustls", "native-tls", "accept", "connect", "uri"]
 
 [lib]
 name = "actix_tls"
@@ -23,13 +23,13 @@ name = "basic"
 required-features = ["accept", "rustls"]
 
 [features]
-default = ["accept", "connect", "http"]
+default = ["accept", "connect", "uri"]
 
 # enable acceptor services
 accept = []
 
 # enable connector services
-connect = []
+connect = ["trust-dns-proto/tokio-runtime", "trust-dns-resolver/tokio-runtime", "trust-dns-resolver/system-config"]
 
 # use openssl impls
 openssl = ["tls-openssl", "tokio-openssl"]
@@ -40,6 +40,9 @@ rustls = ["tls-rustls", "webpki", "webpki-roots", "tokio-rustls"]
 # use native-tls impls
 native-tls = ["tls-native-tls", "tokio-native-tls"]
 
+# support http::Uri as connect address
+uri = ["http"]
+
 [dependencies]
 actix-codec = "0.4.0-beta.1"
 actix-rt = "2.0.0-beta.1"
@@ -49,10 +52,12 @@ actix-utils = "3.0.0-beta.1"
 derive_more = "0.99.5"
 either = "1.6"
 futures-util = { version = "0.3.7", default-features = false }
-http = { version = "0.2.0", optional = true }
+http = { version = "0.2.2", optional = true }
 log = "0.4"
-trust-dns-proto = { version = "0.19", default-features = false, features = ["tokio-runtime"] }
-trust-dns-resolver = { version = "0.19", default-features = false, features = ["tokio-runtime", "system-config"] }
+
+# resolver
+trust-dns-proto = { version = "0.20.0-alpha.3", default-features = false, optional = true }
+trust-dns-resolver = { version = "0.20.0-alpha.3", default-features = false, optional = true }
 
 # openssl
 tls-openssl = { package = "openssl", version = "0.10", optional = true }
@@ -74,5 +79,6 @@ tokio-native-tls = { version = "0.3", optional = true }
 actix-server = "2.0.0-beta.1"
 actix-testing = "2.0.0-beta.1"
 bytes = "1"
-log = "0.4"
 env_logger = "0.8"
+futures-util = { version = "0.3.7", default-features = false, features = ["sink"] }
+log = "0.4"
diff --git a/actix-tls/src/accept/nativetls.rs b/actix-tls/src/accept/nativetls.rs
index 12d23855..5d80ce8b 100644
--- a/actix-tls/src/accept/nativetls.rs
+++ b/actix-tls/src/accept/nativetls.rs
@@ -1,10 +1,9 @@
-use std::marker::PhantomData;
 use std::task::{Context, Poll};
 
 use actix_codec::{AsyncRead, AsyncWrite};
 use actix_service::{Service, ServiceFactory};
 use actix_utils::counter::Counter;
-use futures_util::future::{self, FutureExt, LocalBoxFuture, TryFutureExt};
+use futures_util::future::{ready, LocalBoxFuture, Ready};
 
 pub use native_tls::Error;
 pub use tokio_native_tls::{TlsAcceptor, TlsStream};
@@ -14,75 +13,64 @@ use super::MAX_CONN_COUNTER;
 /// Accept TLS connections via `native-tls` package.
 ///
 /// `native-tls` feature enables this `Acceptor` type.
-pub struct Acceptor<T> {
+pub struct Acceptor {
     acceptor: TlsAcceptor,
-    io: PhantomData<T>,
 }
 
-impl<T> Acceptor<T>
-where
-    T: AsyncRead + AsyncWrite + Unpin,
-{
+impl Acceptor {
     /// Create `native-tls` based `Acceptor` service factory.
     #[inline]
     pub fn new(acceptor: TlsAcceptor) -> Self {
-        Acceptor {
-            acceptor,
-            io: PhantomData,
-        }
+        Acceptor { acceptor }
     }
 }
 
-impl<T> Clone for Acceptor<T> {
+impl Clone for Acceptor {
     #[inline]
     fn clone(&self) -> Self {
         Self {
             acceptor: self.acceptor.clone(),
-            io: PhantomData,
         }
     }
 }
 
-impl<T> ServiceFactory<T> for Acceptor<T>
+impl<T> ServiceFactory<T> for Acceptor
 where
     T: AsyncRead + AsyncWrite + Unpin + 'static,
 {
     type Response = TlsStream<T>;
     type Error = Error;
-    type Service = NativeTlsAcceptorService<T>;
-
     type Config = ();
+
+    type Service = NativeTlsAcceptorService;
     type InitError = ();
-    type Future = future::Ready<Result<Self::Service, Self::InitError>>;
+    type Future = Ready<Result<Self::Service, Self::InitError>>;
 
     fn new_service(&self, _: ()) -> Self::Future {
         MAX_CONN_COUNTER.with(|conns| {
-            future::ok(NativeTlsAcceptorService {
+            ready(Ok(NativeTlsAcceptorService {
                 acceptor: self.acceptor.clone(),
                 conns: conns.clone(),
-                io: PhantomData,
-            })
+            }))
         })
     }
 }
 
-pub struct NativeTlsAcceptorService<T> {
+pub struct NativeTlsAcceptorService {
     acceptor: TlsAcceptor,
-    io: PhantomData<T>,
     conns: Counter,
 }
 
-impl<T> Clone for NativeTlsAcceptorService<T> {
+impl Clone for NativeTlsAcceptorService {
     fn clone(&self) -> Self {
         Self {
             acceptor: self.acceptor.clone(),
-            io: PhantomData,
             conns: self.conns.clone(),
         }
     }
 }
 
-impl<T> Service<T> for NativeTlsAcceptorService<T>
+impl<T> Service<T> for NativeTlsAcceptorService
 where
     T: AsyncRead + AsyncWrite + Unpin + 'static,
 {
@@ -101,12 +89,10 @@ where
     fn call(&mut self, io: T) -> Self::Future {
         let guard = self.conns.get();
         let this = self.clone();
-        async move { this.acceptor.accept(io).await }
-            .map_ok(move |io| {
-                // Required to preserve `CounterGuard` until `Self::Future` is completely resolved.
-                let _ = guard;
-                io
-            })
-            .boxed_local()
+        Box::pin(async move {
+            let io = this.acceptor.accept(io).await;
+            drop(guard);
+            io
+        })
     }
 }
diff --git a/actix-tls/src/accept/openssl.rs b/actix-tls/src/accept/openssl.rs
index 44877b24..e51808a3 100644
--- a/actix-tls/src/accept/openssl.rs
+++ b/actix-tls/src/accept/openssl.rs
@@ -1,5 +1,4 @@
 use std::future::Future;
-use std::marker::PhantomData;
 use std::pin::Pin;
 use std::task::{Context, Poll};
 
@@ -7,7 +6,7 @@ use actix_codec::{AsyncRead, AsyncWrite};
 use actix_service::{Service, ServiceFactory};
 use actix_utils::counter::{Counter, CounterGuard};
 use futures_util::{
-    future::{ok, Ready},
+    future::{ready, Ready},
     ready,
 };
 
@@ -21,61 +20,54 @@ use super::MAX_CONN_COUNTER;
 /// Accept TLS connections via `openssl` package.
 ///
 /// `openssl` feature enables this `Acceptor` type.
-pub struct Acceptor<T: AsyncRead + AsyncWrite> {
+pub struct Acceptor {
     acceptor: SslAcceptor,
-    io: PhantomData<T>,
 }
 
-impl<T: AsyncRead + AsyncWrite> Acceptor<T> {
+impl Acceptor {
     /// Create OpenSSL based `Acceptor` service factory.
     #[inline]
     pub fn new(acceptor: SslAcceptor) -> Self {
-        Acceptor {
-            acceptor,
-            io: PhantomData,
-        }
+        Acceptor { acceptor }
     }
 }
 
-impl<T: AsyncRead + AsyncWrite> Clone for Acceptor<T> {
+impl Clone for Acceptor {
     #[inline]
     fn clone(&self) -> Self {
         Self {
             acceptor: self.acceptor.clone(),
-            io: PhantomData,
         }
     }
 }
 
-impl<T> ServiceFactory<T> for Acceptor<T>
+impl<T> ServiceFactory<T> for Acceptor
 where
     T: AsyncRead + AsyncWrite + Unpin + 'static,
 {
     type Response = SslStream<T>;
     type Error = SslError;
     type Config = ();
-    type Service = AcceptorService<T>;
+    type Service = AcceptorService;
     type InitError = ();
     type Future = Ready<Result<Self::Service, Self::InitError>>;
 
     fn new_service(&self, _: ()) -> Self::Future {
         MAX_CONN_COUNTER.with(|conns| {
-            ok(AcceptorService {
+            ready(Ok(AcceptorService {
                 acceptor: self.acceptor.clone(),
                 conns: conns.clone(),
-                io: PhantomData,
-            })
+            }))
         })
     }
 }
 
-pub struct AcceptorService<T> {
+pub struct AcceptorService {
     acceptor: SslAcceptor,
     conns: Counter,
-    io: PhantomData<T>,
 }
 
-impl<T> Service<T> for AcceptorService<T>
+impl<T> Service<T> for AcceptorService
 where
     T: AsyncRead + AsyncWrite + Unpin + 'static,
 {
diff --git a/actix-tls/src/accept/rustls.rs b/actix-tls/src/accept/rustls.rs
index 1c40757e..a6686f44 100644
--- a/actix-tls/src/accept/rustls.rs
+++ b/actix-tls/src/accept/rustls.rs
@@ -1,6 +1,5 @@
 use std::future::Future;
 use std::io;
-use std::marker::PhantomData;
 use std::pin::Pin;
 use std::sync::Arc;
 use std::task::{Context, Poll};
@@ -8,7 +7,7 @@ use std::task::{Context, Poll};
 use actix_codec::{AsyncRead, AsyncWrite};
 use actix_service::{Service, ServiceFactory};
 use actix_utils::counter::{Counter, CounterGuard};
-use futures_util::future::{ok, Ready};
+use futures_util::future::{ready, Ready};
 use tokio_rustls::{Accept, TlsAcceptor};
 
 pub use rustls::{ServerConfig, Session};
@@ -20,66 +19,58 @@ use super::MAX_CONN_COUNTER;
 /// Accept TLS connections via `rustls` package.
 ///
 /// `rustls` feature enables this `Acceptor` type.
-pub struct Acceptor<T> {
+pub struct Acceptor {
     config: Arc<ServerConfig>,
-    io: PhantomData<T>,
 }
 
-impl<T> Acceptor<T>
-where
-    T: AsyncRead + AsyncWrite,
-{
+impl Acceptor {
     /// Create Rustls based `Acceptor` service factory.
     #[inline]
     pub fn new(config: ServerConfig) -> Self {
         Acceptor {
             config: Arc::new(config),
-            io: PhantomData,
         }
     }
 }
 
-impl<T> Clone for Acceptor<T> {
+impl Clone for Acceptor {
     #[inline]
     fn clone(&self) -> Self {
         Self {
             config: self.config.clone(),
-            io: PhantomData,
         }
     }
 }
 
-impl<T> ServiceFactory<T> for Acceptor<T>
+impl<T> ServiceFactory<T> for Acceptor
 where
     T: AsyncRead + AsyncWrite + Unpin,
 {
     type Response = TlsStream<T>;
     type Error = io::Error;
-    type Service = AcceptorService<T>;
-
     type Config = ();
+
+    type Service = AcceptorService;
     type InitError = ();
     type Future = Ready<Result<Self::Service, Self::InitError>>;
 
     fn new_service(&self, _: ()) -> Self::Future {
         MAX_CONN_COUNTER.with(|conns| {
-            ok(AcceptorService {
+            ready(Ok(AcceptorService {
                 acceptor: self.config.clone().into(),
                 conns: conns.clone(),
-                io: PhantomData,
-            })
+            }))
         })
     }
 }
 
 /// Rustls based `Acceptor` service
-pub struct AcceptorService<T> {
+pub struct AcceptorService {
     acceptor: TlsAcceptor,
-    io: PhantomData<T>,
     conns: Counter,
 }
 
-impl<T> Service<T> for AcceptorService<T>
+impl<T> Service<T> for AcceptorService
 where
     T: AsyncRead + AsyncWrite + Unpin,
 {
@@ -119,11 +110,6 @@ where
 
     fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
         let this = self.get_mut();
-
-        let res = futures_util::ready!(Pin::new(&mut this.fut).poll(cx));
-        match res {
-            Ok(io) => Poll::Ready(Ok(io)),
-            Err(e) => Poll::Ready(Err(e)),
-        }
+        Pin::new(&mut this.fut).poll(cx)
     }
 }
diff --git a/actix-tls/src/connect/connector.rs b/actix-tls/src/connect/connector.rs
index c7a31e0a..a0a6b8b5 100644
--- a/actix-tls/src/connect/connector.rs
+++ b/actix-tls/src/connect/connector.rs
@@ -8,7 +8,7 @@ use std::task::{Context, Poll};
 
 use actix_rt::net::TcpStream;
 use actix_service::{Service, ServiceFactory};
-use futures_util::future::{err, ok, BoxFuture, Either, FutureExt, Ready};
+use futures_util::future::{ready, Ready};
 use log::{error, trace};
 
 use super::connect::{Address, Connect, Connection};
@@ -50,7 +50,7 @@ impl<T: Address> ServiceFactory<Connect<T>> for TcpConnectorFactory<T> {
     type Future = Ready<Result<Self::Service, Self::InitError>>;
 
     fn new_service(&self, _: ()) -> Self::Future {
-        ok(self.service())
+        ready(Ok(self.service()))
     }
 }
 
@@ -73,8 +73,7 @@ impl<T> Clone for TcpConnector<T> {
 impl<T: Address> Service<Connect<T>> for TcpConnector<T> {
     type Response = Connection<T, TcpStream>;
     type Error = ConnectError;
-    #[allow(clippy::type_complexity)]
-    type Future = Either<TcpConnectorResponse<T>, Ready<Result<Self::Response, Self::Error>>>;
+    type Future = TcpConnectorResponse<T>;
 
     actix_service::always_ready!();
 
@@ -83,21 +82,26 @@ impl<T: Address> Service<Connect<T>> for TcpConnector<T> {
         let Connect { req, addr, .. } = req;
 
         if let Some(addr) = addr {
-            Either::Left(TcpConnectorResponse::new(req, port, addr))
+            TcpConnectorResponse::new(req, port, addr)
         } else {
             error!("TCP connector: got unresolved address");
-            Either::Right(err(ConnectError::Unresolved))
+            TcpConnectorResponse::Error(Some(ConnectError::Unresolved))
         }
     }
 }
 
+type LocalBoxFuture<'a, T> = Pin<Box<dyn Future<Output = T> + 'a>>;
+
 #[doc(hidden)]
 /// TCP stream connector response future
-pub struct TcpConnectorResponse<T> {
-    req: Option<T>,
-    port: u16,
-    addrs: Option<VecDeque<SocketAddr>>,
-    stream: Option<BoxFuture<'static, Result<TcpStream, io::Error>>>,
+pub enum TcpConnectorResponse<T> {
+    Response {
+        req: Option<T>,
+        port: u16,
+        addrs: Option<VecDeque<SocketAddr>>,
+        stream: Option<LocalBoxFuture<'static, Result<TcpStream, io::Error>>>,
+    },
+    Error(Option<ConnectError>),
 }
 
 impl<T: Address> TcpConnectorResponse<T> {
@@ -113,13 +117,13 @@ impl<T: Address> TcpConnectorResponse<T> {
         );
 
         match addr {
-            either::Either::Left(addr) => TcpConnectorResponse {
+            either::Either::Left(addr) => TcpConnectorResponse::Response {
                 req: Some(req),
                 port,
                 addrs: None,
-                stream: Some(TcpStream::connect(addr).boxed()),
+                stream: Some(Box::pin(TcpStream::connect(addr))),
             },
-            either::Either::Right(addrs) => TcpConnectorResponse {
+            either::Either::Right(addrs) => TcpConnectorResponse::Response {
                 req: Some(req),
                 port,
                 addrs: Some(addrs),
@@ -134,36 +138,43 @@ impl<T: Address> Future for TcpConnectorResponse<T> {
 
     fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
         let this = self.get_mut();
-
-        // connect
-        loop {
-            if let Some(new) = this.stream.as_mut() {
-                match new.as_mut().poll(cx) {
-                    Poll::Ready(Ok(sock)) => {
-                        let req = this.req.take().unwrap();
-                        trace!(
-                            "TCP connector - successfully connected to connecting to {:?} - {:?}",
-                            req.host(), sock.peer_addr()
-                        );
-                        return Poll::Ready(Ok(Connection::new(sock, req)));
-                    }
-                    Poll::Pending => return Poll::Pending,
-                    Poll::Ready(Err(err)) => {
-                        trace!(
-                            "TCP connector - failed to connect to connecting to {:?} port: {}",
-                            this.req.as_ref().unwrap().host(),
-                            this.port,
-                        );
-                        if this.addrs.is_none() || this.addrs.as_ref().unwrap().is_empty() {
-                            return Poll::Ready(Err(err.into()));
+        match this {
+            TcpConnectorResponse::Error(e) => Poll::Ready(Err(e.take().unwrap())),
+            // connect
+            TcpConnectorResponse::Response {
+                req,
+                port,
+                addrs,
+                stream,
+            } => loop {
+                if let Some(new) = stream.as_mut() {
+                    match new.as_mut().poll(cx) {
+                        Poll::Ready(Ok(sock)) => {
+                            let req = req.take().unwrap();
+                            trace!(
+                                "TCP connector - successfully connected to connecting to {:?} - {:?}",
+                                req.host(), sock.peer_addr()
+                            );
+                            return Poll::Ready(Ok(Connection::new(sock, req)));
+                        }
+                        Poll::Pending => return Poll::Pending,
+                        Poll::Ready(Err(err)) => {
+                            trace!(
+                                "TCP connector - failed to connect to connecting to {:?} port: {}",
+                                req.as_ref().unwrap().host(),
+                                port,
+                            );
+                            if addrs.is_none() || addrs.as_ref().unwrap().is_empty() {
+                                return Poll::Ready(Err(err.into()));
+                            }
                         }
                     }
                 }
-            }
 
-            // try to connect
-            let addr = this.addrs.as_mut().unwrap().pop_front().unwrap();
-            this.stream = Some(TcpStream::connect(addr).boxed());
+                // try to connect
+                let addr = addrs.as_mut().unwrap().pop_front().unwrap();
+                *stream = Some(Box::pin(TcpStream::connect(addr)));
+            },
         }
     }
 }
diff --git a/actix-tls/src/connect/mod.rs b/actix-tls/src/connect/mod.rs
index 753cfc33..75312c59 100644
--- a/actix-tls/src/connect/mod.rs
+++ b/actix-tls/src/connect/mod.rs
@@ -11,6 +11,7 @@ mod error;
 mod resolve;
 mod service;
 pub mod ssl;
+#[cfg(feature = "uri")]
 mod uri;
 
 use actix_rt::{net::TcpStream, Arbiter};
@@ -35,7 +36,7 @@ pub async fn start_resolver(
     cfg: ResolverConfig,
     opts: ResolverOpts,
 ) -> Result<AsyncResolver, ConnectError> {
-    Ok(AsyncResolver::tokio(cfg, opts).await?)
+    Ok(AsyncResolver::tokio(cfg, opts)?)
 }
 
 struct DefaultResolver(AsyncResolver);
@@ -52,7 +53,7 @@ pub(crate) async fn get_default_resolver() -> Result<AsyncResolver, ConnectError
             }
         };
 
-        let resolver = AsyncResolver::tokio(cfg, opts).await?;
+        let resolver = AsyncResolver::tokio(cfg, opts)?;
 
         Arbiter::set_item(DefaultResolver(resolver.clone()));
         Ok(resolver)
diff --git a/actix-tls/src/connect/ssl/openssl.rs b/actix-tls/src/connect/ssl/openssl.rs
index f249717d..5193ce37 100644
--- a/actix-tls/src/connect/ssl/openssl.rs
+++ b/actix-tls/src/connect/ssl/openssl.rs
@@ -8,7 +8,7 @@ use actix_codec::{AsyncRead, AsyncWrite};
 use actix_rt::net::TcpStream;
 use actix_service::{Service, ServiceFactory};
 use futures_util::{
-    future::{err, ok, Either, Ready},
+    future::{ready, Either, Ready},
     ready,
 };
 use log::trace;
@@ -21,43 +21,31 @@ use crate::connect::{
 };
 
 /// OpenSSL connector factory
-pub struct OpensslConnector<T, U> {
+pub struct OpensslConnector {
     connector: SslConnector,
-    _t: PhantomData<(T, U)>,
 }
 
-impl<T, U> OpensslConnector<T, U> {
+impl OpensslConnector {
     pub fn new(connector: SslConnector) -> Self {
-        OpensslConnector {
-            connector,
-            _t: PhantomData,
-        }
+        OpensslConnector { connector }
     }
 }
 
-impl<T, U> OpensslConnector<T, U>
-where
-    T: Address + 'static,
-    U: AsyncRead + AsyncWrite + Unpin + fmt::Debug + 'static,
-{
-    pub fn service(connector: SslConnector) -> OpensslConnectorService<T, U> {
-        OpensslConnectorService {
-            connector,
-            _t: PhantomData,
-        }
+impl OpensslConnector {
+    pub fn service(connector: SslConnector) -> OpensslConnectorService {
+        OpensslConnectorService { connector }
     }
 }
 
-impl<T, U> Clone for OpensslConnector<T, U> {
+impl Clone for OpensslConnector {
     fn clone(&self) -> Self {
         Self {
             connector: self.connector.clone(),
-            _t: PhantomData,
         }
     }
 }
 
-impl<T, U> ServiceFactory<Connection<T, U>> for OpensslConnector<T, U>
+impl<T, U> ServiceFactory<Connection<T, U>> for OpensslConnector
 where
     T: Address + 'static,
     U: AsyncRead + AsyncWrite + Unpin + fmt::Debug + 'static,
@@ -65,33 +53,30 @@ where
     type Response = Connection<T, SslStream<U>>;
     type Error = io::Error;
     type Config = ();
-    type Service = OpensslConnectorService<T, U>;
+    type Service = OpensslConnectorService;
     type InitError = ();
     type Future = Ready<Result<Self::Service, Self::InitError>>;
 
     fn new_service(&self, _: ()) -> Self::Future {
-        ok(OpensslConnectorService {
+        ready(Ok(OpensslConnectorService {
             connector: self.connector.clone(),
-            _t: PhantomData,
-        })
+        }))
     }
 }
 
-pub struct OpensslConnectorService<T, U> {
+pub struct OpensslConnectorService {
     connector: SslConnector,
-    _t: PhantomData<(T, U)>,
 }
 
-impl<T, U> Clone for OpensslConnectorService<T, U> {
+impl Clone for OpensslConnectorService {
     fn clone(&self) -> Self {
         Self {
             connector: self.connector.clone(),
-            _t: PhantomData,
         }
     }
 }
 
-impl<T, U> Service<Connection<T, U>> for OpensslConnectorService<T, U>
+impl<T, U> Service<Connection<T, U>> for OpensslConnectorService
 where
     T: Address + 'static,
     U: AsyncRead + AsyncWrite + Unpin + fmt::Debug + 'static,
@@ -109,7 +94,7 @@ where
         let host = stream.host().to_string();
 
         match self.connector.configure() {
-            Err(e) => Either::Right(err(io::Error::new(io::ErrorKind::Other, e))),
+            Err(e) => Either::Right(ready(Err(io::Error::new(io::ErrorKind::Other, e)))),
             Ok(config) => {
                 let ssl = config
                     .into_ssl(&host)
@@ -156,7 +141,7 @@ where
 
 pub struct OpensslConnectServiceFactory<T> {
     tcp: ConnectServiceFactory<T>,
-    openssl: OpensslConnector<T, TcpStream>,
+    openssl: OpensslConnector,
 }
 
 impl<T> OpensslConnectServiceFactory<T> {
@@ -182,7 +167,6 @@ impl<T> OpensslConnectServiceFactory<T> {
             tcp: self.tcp.service(),
             openssl: OpensslConnectorService {
                 connector: self.openssl.connector.clone(),
-                _t: PhantomData,
             },
         }
     }
@@ -206,14 +190,14 @@ impl<T: Address + 'static> ServiceFactory<Connect<T>> for OpensslConnectServiceF
     type Future = Ready<Result<Self::Service, Self::InitError>>;
 
     fn new_service(&self, _: ()) -> Self::Future {
-        ok(self.service())
+        ready(Ok(self.service()))
     }
 }
 
 #[derive(Clone)]
 pub struct OpensslConnectService<T> {
     tcp: ConnectService<T>,
-    openssl: OpensslConnectorService<T, TcpStream>,
+    openssl: OpensslConnectorService,
 }
 
 impl<T: Address + 'static> Service<Connect<T>> for OpensslConnectService<T> {
@@ -234,10 +218,8 @@ impl<T: Address + 'static> Service<Connect<T>> for OpensslConnectService<T> {
 
 pub struct OpensslConnectServiceResponse<T: Address + 'static> {
     fut1: Option<<ConnectService<T> as Service<Connect<T>>>::Future>,
-    fut2: Option<
-        <OpensslConnectorService<T, TcpStream> as Service<Connection<T, TcpStream>>>::Future,
-    >,
-    openssl: OpensslConnectorService<T, TcpStream>,
+    fut2: Option<<OpensslConnectorService as Service<Connection<T, TcpStream>>>::Future>,
+    openssl: OpensslConnectorService,
 }
 
 impl<T: Address> Future for OpensslConnectServiceResponse<T> {
diff --git a/actix-tls/src/connect/ssl/rustls.rs b/actix-tls/src/connect/ssl/rustls.rs
index f5259280..390ba413 100644
--- a/actix-tls/src/connect/ssl/rustls.rs
+++ b/actix-tls/src/connect/ssl/rustls.rs
@@ -1,6 +1,5 @@
 use std::fmt;
 use std::future::Future;
-use std::marker::PhantomData;
 use std::pin::Pin;
 use std::sync::Arc;
 use std::task::{Context, Poll};
@@ -10,7 +9,10 @@ pub use tokio_rustls::{client::TlsStream, rustls::ClientConfig};
 
 use actix_codec::{AsyncRead, AsyncWrite};
 use actix_service::{Service, ServiceFactory};
-use futures_util::future::{ok, Ready};
+use futures_util::{
+    future::{ready, Ready},
+    ready,
+};
 use log::trace;
 use tokio_rustls::{Connect, TlsConnector};
 use webpki::DNSNameRef;
@@ -18,77 +20,63 @@ use webpki::DNSNameRef;
 use crate::connect::{Address, Connection};
 
 /// Rustls connector factory
-pub struct RustlsConnector<T, U> {
+pub struct RustlsConnector {
     connector: Arc<ClientConfig>,
-    _t: PhantomData<(T, U)>,
 }
 
-impl<T, U> RustlsConnector<T, U> {
+impl RustlsConnector {
     pub fn new(connector: Arc<ClientConfig>) -> Self {
-        RustlsConnector {
-            connector,
-            _t: PhantomData,
-        }
+        RustlsConnector { connector }
     }
 }
 
-impl<T, U> RustlsConnector<T, U>
-where
-    T: Address,
-    U: AsyncRead + AsyncWrite + Unpin + fmt::Debug,
-{
-    pub fn service(connector: Arc<ClientConfig>) -> RustlsConnectorService<T, U> {
-        RustlsConnectorService {
-            connector,
-            _t: PhantomData,
-        }
+impl RustlsConnector {
+    pub fn service(connector: Arc<ClientConfig>) -> RustlsConnectorService {
+        RustlsConnectorService { connector }
     }
 }
 
-impl<T, U> Clone for RustlsConnector<T, U> {
+impl Clone for RustlsConnector {
     fn clone(&self) -> Self {
         Self {
             connector: self.connector.clone(),
-            _t: PhantomData,
         }
     }
 }
 
-impl<T: Address, U> ServiceFactory<Connection<T, U>> for RustlsConnector<T, U>
+impl<T: Address, U> ServiceFactory<Connection<T, U>> for RustlsConnector
 where
     U: AsyncRead + AsyncWrite + Unpin + fmt::Debug,
 {
     type Response = Connection<T, TlsStream<U>>;
     type Error = std::io::Error;
     type Config = ();
-    type Service = RustlsConnectorService<T, U>;
+    type Service = RustlsConnectorService;
     type InitError = ();
     type Future = Ready<Result<Self::Service, Self::InitError>>;
 
     fn new_service(&self, _: ()) -> Self::Future {
-        ok(RustlsConnectorService {
+        ready(Ok(RustlsConnectorService {
             connector: self.connector.clone(),
-            _t: PhantomData,
-        })
+        }))
     }
 }
 
-pub struct RustlsConnectorService<T, U> {
+pub struct RustlsConnectorService {
     connector: Arc<ClientConfig>,
-    _t: PhantomData<(T, U)>,
 }
 
-impl<T, U> Clone for RustlsConnectorService<T, U> {
+impl Clone for RustlsConnectorService {
     fn clone(&self) -> Self {
         Self {
             connector: self.connector.clone(),
-            _t: PhantomData,
         }
     }
 }
 
-impl<T: Address, U> Service<Connection<T, U>> for RustlsConnectorService<T, U>
+impl<T, U> Service<Connection<T, U>> for RustlsConnectorService
 where
+    T: Address,
     U: AsyncRead + AsyncWrite + Unpin + fmt::Debug,
 {
     type Response = Connection<T, TlsStream<U>>;
@@ -114,20 +102,18 @@ pub struct ConnectAsyncExt<T, U> {
     stream: Option<Connection<T, ()>>,
 }
 
-impl<T: Address, U> Future for ConnectAsyncExt<T, U>
+impl<T, U> Future for ConnectAsyncExt<T, U>
 where
+    T: Address,
     U: AsyncRead + AsyncWrite + Unpin + fmt::Debug,
 {
     type Output = Result<Connection<T, TlsStream<U>>, std::io::Error>;
 
     fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
         let this = self.get_mut();
-        Poll::Ready(
-            futures_util::ready!(Pin::new(&mut this.fut).poll(cx)).map(|stream| {
-                let s = this.stream.take().unwrap();
-                trace!("SSL Handshake success: {:?}", s.host());
-                s.replace(stream).1
-            }),
-        )
+        let stream = ready!(Pin::new(&mut this.fut).poll(cx))?;
+        let s = this.stream.take().unwrap();
+        trace!("SSL Handshake success: {:?}", s.host());
+        Poll::Ready(Ok(s.replace(stream).1))
     }
 }
diff --git a/actix-tls/tests/test_connect.rs b/actix-tls/tests/test_connect.rs
new file mode 100644
index 00000000..fd083893
--- /dev/null
+++ b/actix-tls/tests/test_connect.rs
@@ -0,0 +1,130 @@
+use std::io;
+
+use actix_codec::{BytesCodec, Framed};
+use actix_rt::net::TcpStream;
+use actix_service::{fn_service, Service, ServiceFactory};
+use actix_testing::TestServer;
+use bytes::Bytes;
+use futures_util::sink::SinkExt;
+
+use actix_tls::connect::{
+    self as actix_connect,
+    resolver::{ResolverConfig, ResolverOpts},
+    Connect,
+};
+
+#[cfg(all(feature = "connect", feature = "openssl"))]
+#[actix_rt::test]
+async fn test_string() {
+    let srv = TestServer::with(|| {
+        fn_service(|io: TcpStream| async {
+            let mut framed = Framed::new(io, BytesCodec);
+            framed.send(Bytes::from_static(b"test")).await?;
+            Ok::<_, io::Error>(())
+        })
+    });
+
+    let mut conn = actix_connect::default_connector();
+    let addr = format!("localhost:{}", srv.port());
+    let con = conn.call(addr.into()).await.unwrap();
+    assert_eq!(con.peer_addr().unwrap(), srv.addr());
+}
+
+#[cfg(feature = "rustls")]
+#[actix_rt::test]
+async fn test_rustls_string() {
+    let srv = TestServer::with(|| {
+        fn_service(|io: TcpStream| async {
+            let mut framed = Framed::new(io, BytesCodec);
+            framed.send(Bytes::from_static(b"test")).await?;
+            Ok::<_, io::Error>(())
+        })
+    });
+
+    let mut conn = actix_connect::default_connector();
+    let addr = format!("localhost:{}", srv.port());
+    let con = conn.call(addr.into()).await.unwrap();
+    assert_eq!(con.peer_addr().unwrap(), srv.addr());
+}
+
+#[actix_rt::test]
+async fn test_static_str() {
+    let srv = TestServer::with(|| {
+        fn_service(|io: TcpStream| async {
+            let mut framed = Framed::new(io, BytesCodec);
+            framed.send(Bytes::from_static(b"test")).await?;
+            Ok::<_, io::Error>(())
+        })
+    });
+
+    let resolver = actix_connect::start_default_resolver().await.unwrap();
+    let mut conn = actix_connect::new_connector(resolver.clone());
+
+    let con = conn.call(Connect::with("10", srv.addr())).await.unwrap();
+    assert_eq!(con.peer_addr().unwrap(), srv.addr());
+
+    let connect = Connect::new(srv.host().to_owned());
+    let mut conn = actix_connect::new_connector(resolver);
+    let con = conn.call(connect).await;
+    assert!(con.is_err());
+}
+
+#[actix_rt::test]
+async fn test_new_service() {
+    let srv = TestServer::with(|| {
+        fn_service(|io: TcpStream| async {
+            let mut framed = Framed::new(io, BytesCodec);
+            framed.send(Bytes::from_static(b"test")).await?;
+            Ok::<_, io::Error>(())
+        })
+    });
+
+    let resolver =
+        actix_connect::start_resolver(ResolverConfig::default(), ResolverOpts::default())
+            .await
+            .unwrap();
+
+    let factory = actix_connect::new_connector_factory(resolver);
+
+    let mut conn = factory.new_service(()).await.unwrap();
+    let con = conn.call(Connect::with("10", srv.addr())).await.unwrap();
+    assert_eq!(con.peer_addr().unwrap(), srv.addr());
+}
+
+#[cfg(all(feature = "openssl", feature = "uri"))]
+#[actix_rt::test]
+async fn test_openssl_uri() {
+    use std::convert::TryFrom;
+
+    let srv = TestServer::with(|| {
+        fn_service(|io: TcpStream| async {
+            let mut framed = Framed::new(io, BytesCodec);
+            framed.send(Bytes::from_static(b"test")).await?;
+            Ok::<_, io::Error>(())
+        })
+    });
+
+    let mut conn = actix_connect::default_connector();
+    let addr = http::Uri::try_from(format!("https://localhost:{}", srv.port())).unwrap();
+    let con = conn.call(addr.into()).await.unwrap();
+    assert_eq!(con.peer_addr().unwrap(), srv.addr());
+}
+
+#[cfg(all(feature = "rustls", feature = "uri"))]
+#[actix_rt::test]
+async fn test_rustls_uri() {
+    use std::convert::TryFrom;
+
+    let srv = TestServer::with(|| {
+        fn_service(|io: TcpStream| async {
+            let mut framed = Framed::new(io, BytesCodec);
+            framed.send(Bytes::from_static(b"test")).await?;
+            Ok::<_, io::Error>(())
+        })
+    });
+
+    let mut conn = actix_connect::default_connector();
+    let addr = http::Uri::try_from(format!("https://localhost:{}", srv.port())).unwrap();
+    let con = conn.call(addr.into()).await.unwrap();
+    assert_eq!(con.peer_addr().unwrap(), srv.addr());
+}
diff --git a/string/Cargo.toml b/string/Cargo.toml
index 3653fe58..d3c290c8 100644
--- a/string/Cargo.toml
+++ b/string/Cargo.toml
@@ -15,7 +15,7 @@ name = "bytestring"
 path = "src/lib.rs"
 
 [dependencies]
-bytes = "0.5.3"
+bytes = "1"
 serde = { version = "1.0", optional = true }
 
 [dev-dependencies]