diff --git a/actix-rt/src/arbiter.rs b/actix-rt/src/arbiter.rs
index 7aae7cd2..95b40b25 100644
--- a/actix-rt/src/arbiter.rs
+++ b/actix-rt/src/arbiter.rs
@@ -9,9 +9,6 @@ use std::{fmt, thread};
 
 use tokio::sync::mpsc::{unbounded_channel, UnboundedReceiver, UnboundedSender};
 use tokio::sync::oneshot::{channel, error::RecvError as Canceled, Sender};
-// use futures_util::stream::FuturesUnordered;
-// use tokio::task::JoinHandle;
-// use tokio::stream::StreamExt;
 use tokio::task::LocalSet;
 
 use crate::runtime::Runtime;
@@ -19,12 +16,6 @@ use crate::system::System;
 
 thread_local!(
     static ADDR: RefCell<Option<Arbiter>> = RefCell::new(None);
-    // TODO: Commented out code are for Arbiter::local_join function.
-    // It can be safely removed if this function is not used in actix-*.
-    //
-    // /// stores join handle for spawned async tasks.
-    // static HANDLE: RefCell<FuturesUnordered<JoinHandle<()>>> =
-    //     RefCell::new(FuturesUnordered::new());
     static STORAGE: RefCell<HashMap<TypeId, Box<dyn Any>>> = RefCell::new(HashMap::new());
 );
 
@@ -154,11 +145,6 @@ impl Arbiter {
     where
         F: Future<Output = ()> + 'static,
     {
-        // HANDLE.with(|handle| {
-        //     let handle = handle.borrow();
-        //     handle.push(tokio::task::spawn_local(future));
-        // });
-        // let _ = tokio::task::spawn_local(CleanupPending);
         let _ = tokio::task::spawn_local(future);
     }
 
@@ -277,32 +263,12 @@ impl Arbiter {
 
     /// Returns a future that will be completed once all currently spawned futures
     /// have completed.
-    #[deprecated(since = "1.2.0", note = "Arbiter::local_join function is removed.")]
+    #[deprecated(since = "2.0.0", note = "Arbiter::local_join function is removed.")]
     pub async fn local_join() {
-        // let handle = HANDLE.with(|fut| std::mem::take(&mut *fut.borrow_mut()));
-        // async move {
-        //     handle.collect::<Vec<_>>().await;
-        // }
         unimplemented!("Arbiter::local_join function is removed.")
     }
 }
 
-// /// Future used for cleaning-up already finished `JoinHandle`s
-// /// from the `PENDING` list so the vector doesn't grow indefinitely
-// struct CleanupPending;
-//
-// impl Future for CleanupPending {
-//     type Output = ();
-//
-//     fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
-//         HANDLE.with(move |handle| {
-//             recycle_join_handle(&mut *handle.borrow_mut(), cx);
-//         });
-//
-//         Poll::Ready(())
-//     }
-// }
-
 struct ArbiterController {
     rx: UnboundedReceiver<ArbiterCommand>,
 }
@@ -330,11 +296,6 @@ impl Future for ArbiterController {
                 Poll::Ready(Some(item)) => match item {
                     ArbiterCommand::Stop => return Poll::Ready(()),
                     ArbiterCommand::Execute(fut) => {
-                        // HANDLE.with(|handle| {
-                        //     let mut handle = handle.borrow_mut();
-                        //     handle.push(tokio::task::spawn_local(fut));
-                        //     recycle_join_handle(&mut *handle, cx);
-                        // });
                         tokio::task::spawn_local(fut);
                     }
                     ArbiterCommand::ExecuteFn(f) => {
@@ -347,20 +308,6 @@ impl Future for ArbiterController {
     }
 }
 
-// fn recycle_join_handle(handle: &mut FuturesUnordered<JoinHandle<()>>, cx: &mut Context<'_>) {
-//     let _ = Pin::new(&mut *handle).poll_next(cx);
-//
-//     // Try to recycle more join handles and free up memory.
-//     //
-//     // this is a guess. The yield limit for FuturesUnordered is 32.
-//     // So poll an extra 3 times would make the total poll below 128.
-//     if handle.len() > 64 {
-//         (0..3).for_each(|_| {
-//             let _ = Pin::new(&mut *handle).poll_next(cx);
-//         })
-//     }
-// }
-
 #[derive(Debug)]
 pub(crate) enum SystemCommand {
     Exit(i32),
diff --git a/actix-rt/src/lib.rs b/actix-rt/src/lib.rs
index 30fa2d78..6e9d0464 100644
--- a/actix-rt/src/lib.rs
+++ b/actix-rt/src/lib.rs
@@ -66,7 +66,7 @@ pub mod time {
     pub use tokio::time::{timeout, Timeout};
 }
 
-/// Blocking task management.
+/// Task management.
 pub mod task {
     pub use tokio::task::{spawn_blocking, yield_now, JoinHandle};
 }
diff --git a/actix-rt/tests/integration_tests.rs b/actix-rt/tests/integration_tests.rs
index 12ceb4ef..f338602d 100644
--- a/actix-rt/tests/integration_tests.rs
+++ b/actix-rt/tests/integration_tests.rs
@@ -62,43 +62,6 @@ fn join_another_arbiter() {
     );
 }
 
-// #[test]
-// fn join_current_arbiter() {
-//     let time = Duration::from_secs(2);
-//
-//     let instant = Instant::now();
-//     actix_rt::System::new("test_join_current_arbiter").block_on(async move {
-//         actix_rt::spawn(async move {
-//             tokio::time::delay_for(time).await;
-//             actix_rt::Arbiter::current().stop();
-//         });
-//         actix_rt::Arbiter::local_join().await;
-//     });
-//     assert!(
-//         instant.elapsed() >= time,
-//         "Join on current arbiter should wait for all spawned futures"
-//     );
-//
-//     let large_timer = Duration::from_secs(20);
-//     let instant = Instant::now();
-//     actix_rt::System::new("test_join_current_arbiter").block_on(async move {
-//         actix_rt::spawn(async move {
-//             tokio::time::delay_for(time).await;
-//             actix_rt::Arbiter::current().stop();
-//         });
-//         let f = actix_rt::Arbiter::local_join();
-//         actix_rt::spawn(async move {
-//             tokio::time::delay_for(large_timer).await;
-//             actix_rt::Arbiter::current().stop();
-//         });
-//         f.await;
-//     });
-//     assert!(
-//         instant.elapsed() < large_timer,
-//         "local_join should await only for the already spawned futures"
-//     );
-// }
-
 #[test]
 fn non_static_block_on() {
     let string = String::from("test_str");
diff --git a/actix-server/Cargo.toml b/actix-server/Cargo.toml
index ead85de0..33bf3b6a 100644
--- a/actix-server/Cargo.toml
+++ b/actix-server/Cargo.toml
@@ -24,7 +24,7 @@ default = []
 
 [dependencies]
 actix-codec = "0.4.0-beta.1"
-actix-rt = "2.0.0-beta.2"
+actix-rt = { version = "2.0.0-beta.2", default-features = false }
 actix-service = "2.0.0-beta.3"
 actix-utils = "3.0.0-beta.1"
 
diff --git a/actix-tls/Cargo.toml b/actix-tls/Cargo.toml
index 8f23d60c..9004ded8 100644
--- a/actix-tls/Cargo.toml
+++ b/actix-tls/Cargo.toml
@@ -29,7 +29,7 @@ default = ["accept", "connect", "uri"]
 accept = []
 
 # enable connector services
-connect = ["trust-dns-proto/tokio-runtime", "trust-dns-resolver/tokio-runtime", "trust-dns-resolver/system-config"]
+connect = ["tokio/net"]
 
 # use openssl impls
 openssl = ["tls-openssl", "tokio-openssl"]
@@ -45,19 +45,17 @@ uri = ["http"]
 
 [dependencies]
 actix-codec = "0.4.0-beta.1"
-actix-rt = "2.0.0-beta.2"
+actix-rt = { version = "2.0.0-beta.2", default-features = false }
 actix-service = "2.0.0-beta.3"
 actix-utils = "3.0.0-beta.1"
 
 derive_more = "0.99.5"
 either = "1.6"
+futures-core = { version = "0.3.7", default-features = false }
 futures-util = { version = "0.3.7", default-features = false }
-http = { version = "0.2.2", optional = true }
+http = { version = "0.2.3", optional = true }
 log = "0.4"
-
-# resolver
-trust-dns-proto = { version = "0.20.0", default-features = false, optional = true }
-trust-dns-resolver = { version = "0.20.0", default-features = false, optional = true }
+tokio = { version = "1", optional = true }
 
 # openssl
 tls-openssl = { package = "openssl", version = "0.10", optional = true }
@@ -76,6 +74,7 @@ tls-native-tls = { package = "native-tls", version = "0.2", optional = true }
 tokio-native-tls = { version = "0.3", optional = true }
 
 [dev-dependencies]
+actix-rt = "2.0.0-beta.2"
 actix-server = "2.0.0-beta.2"
 bytes = "1"
 env_logger = "0.8"
diff --git a/actix-tls/src/accept/nativetls.rs b/actix-tls/src/accept/nativetls.rs
index 5d80ce8b..9b2aeefb 100644
--- a/actix-tls/src/accept/nativetls.rs
+++ b/actix-tls/src/accept/nativetls.rs
@@ -3,7 +3,7 @@ use std::task::{Context, Poll};
 use actix_codec::{AsyncRead, AsyncWrite};
 use actix_service::{Service, ServiceFactory};
 use actix_utils::counter::Counter;
-use futures_util::future::{ready, LocalBoxFuture, Ready};
+use futures_core::future::LocalBoxFuture;
 
 pub use native_tls::Error;
 pub use tokio_native_tls::{TlsAcceptor, TlsStream};
@@ -44,15 +44,16 @@ where
 
     type Service = NativeTlsAcceptorService;
     type InitError = ();
-    type Future = Ready<Result<Self::Service, Self::InitError>>;
+    type Future = LocalBoxFuture<'static, Result<Self::Service, Self::InitError>>;
 
     fn new_service(&self, _: ()) -> Self::Future {
-        MAX_CONN_COUNTER.with(|conns| {
-            ready(Ok(NativeTlsAcceptorService {
+        let res = MAX_CONN_COUNTER.with(|conns| {
+            Ok(NativeTlsAcceptorService {
                 acceptor: self.acceptor.clone(),
                 conns: conns.clone(),
-            }))
-        })
+            })
+        });
+        Box::pin(async { res })
     }
 }
 
diff --git a/actix-tls/src/accept/openssl.rs b/actix-tls/src/accept/openssl.rs
index efda5c38..19f14cb3 100644
--- a/actix-tls/src/accept/openssl.rs
+++ b/actix-tls/src/accept/openssl.rs
@@ -5,10 +5,7 @@ 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::{ready, Ready},
-    ready,
-};
+use futures_core::{future::LocalBoxFuture, ready};
 
 pub use openssl::ssl::{
     AlpnError, Error as SslError, HandshakeError, Ssl, SslAcceptor, SslAcceptorBuilder,
@@ -50,15 +47,16 @@ where
     type Config = ();
     type Service = AcceptorService;
     type InitError = ();
-    type Future = Ready<Result<Self::Service, Self::InitError>>;
+    type Future = LocalBoxFuture<'static, Result<Self::Service, Self::InitError>>;
 
     fn new_service(&self, _: ()) -> Self::Future {
-        MAX_CONN_COUNTER.with(|conns| {
-            ready(Ok(AcceptorService {
+        let res = MAX_CONN_COUNTER.with(|conns| {
+            Ok(AcceptorService {
                 acceptor: self.acceptor.clone(),
                 conns: conns.clone(),
-            }))
-        })
+            })
+        });
+        Box::pin(async { res })
     }
 }
 
diff --git a/actix-tls/src/accept/rustls.rs b/actix-tls/src/accept/rustls.rs
index a6686f44..480c20c2 100644
--- a/actix-tls/src/accept/rustls.rs
+++ b/actix-tls/src/accept/rustls.rs
@@ -1,13 +1,15 @@
-use std::future::Future;
-use std::io;
-use std::pin::Pin;
-use std::sync::Arc;
-use std::task::{Context, Poll};
+use std::{
+    future::Future,
+    io,
+    pin::Pin,
+    sync::Arc,
+    task::{Context, Poll},
+};
 
 use actix_codec::{AsyncRead, AsyncWrite};
 use actix_service::{Service, ServiceFactory};
 use actix_utils::counter::{Counter, CounterGuard};
-use futures_util::future::{ready, Ready};
+use futures_core::future::LocalBoxFuture;
 use tokio_rustls::{Accept, TlsAcceptor};
 
 pub use rustls::{ServerConfig, Session};
@@ -52,15 +54,16 @@ where
 
     type Service = AcceptorService;
     type InitError = ();
-    type Future = Ready<Result<Self::Service, Self::InitError>>;
+    type Future = LocalBoxFuture<'static, Result<Self::Service, Self::InitError>>;
 
     fn new_service(&self, _: ()) -> Self::Future {
-        MAX_CONN_COUNTER.with(|conns| {
-            ready(Ok(AcceptorService {
+        let res = MAX_CONN_COUNTER.with(|conns| {
+            Ok(AcceptorService {
                 acceptor: self.config.clone().into(),
                 conns: conns.clone(),
-            }))
-        })
+            })
+        });
+        Box::pin(async { res })
     }
 }
 
diff --git a/actix-tls/src/connect/connector.rs b/actix-tls/src/connect/connector.rs
index a0a6b8b5..ea683121 100644
--- a/actix-tls/src/connect/connector.rs
+++ b/actix-tls/src/connect/connector.rs
@@ -1,76 +1,48 @@
 use std::collections::VecDeque;
 use std::future::Future;
 use std::io;
-use std::marker::PhantomData;
 use std::net::SocketAddr;
 use std::pin::Pin;
 use std::task::{Context, Poll};
 
 use actix_rt::net::TcpStream;
 use actix_service::{Service, ServiceFactory};
-use futures_util::future::{ready, Ready};
+use futures_core::future::LocalBoxFuture;
 use log::{error, trace};
 
 use super::connect::{Address, Connect, Connection};
 use super::error::ConnectError;
 
 /// TCP connector service factory
-#[derive(Debug)]
-pub struct TcpConnectorFactory<T>(PhantomData<T>);
-
-impl<T> TcpConnectorFactory<T> {
-    pub fn new() -> Self {
-        TcpConnectorFactory(PhantomData)
-    }
+#[derive(Copy, Clone, Debug)]
+pub struct TcpConnectorFactory;
 
+impl TcpConnectorFactory {
     /// Create TCP connector service
-    pub fn service(&self) -> TcpConnector<T> {
-        TcpConnector(PhantomData)
+    pub fn service(&self) -> TcpConnector {
+        TcpConnector
     }
 }
 
-impl<T> Default for TcpConnectorFactory<T> {
-    fn default() -> Self {
-        TcpConnectorFactory(PhantomData)
-    }
-}
-
-impl<T> Clone for TcpConnectorFactory<T> {
-    fn clone(&self) -> Self {
-        TcpConnectorFactory(PhantomData)
-    }
-}
-
-impl<T: Address> ServiceFactory<Connect<T>> for TcpConnectorFactory<T> {
+impl<T: Address> ServiceFactory<Connect<T>> for TcpConnectorFactory {
     type Response = Connection<T, TcpStream>;
     type Error = ConnectError;
     type Config = ();
-    type Service = TcpConnector<T>;
+    type Service = TcpConnector;
     type InitError = ();
-    type Future = Ready<Result<Self::Service, Self::InitError>>;
+    type Future = LocalBoxFuture<'static, Result<Self::Service, Self::InitError>>;
 
     fn new_service(&self, _: ()) -> Self::Future {
-        ready(Ok(self.service()))
+        let service = self.service();
+        Box::pin(async move { Ok(service) })
     }
 }
 
 /// TCP connector service
-#[derive(Default, Debug)]
-pub struct TcpConnector<T>(PhantomData<T>);
+#[derive(Copy, Clone, Debug)]
+pub struct TcpConnector;
 
-impl<T> TcpConnector<T> {
-    pub fn new() -> Self {
-        TcpConnector(PhantomData)
-    }
-}
-
-impl<T> Clone for TcpConnector<T> {
-    fn clone(&self) -> Self {
-        TcpConnector(PhantomData)
-    }
-}
-
-impl<T: Address> Service<Connect<T>> for TcpConnector<T> {
+impl<T: Address> Service<Connect<T>> for TcpConnector {
     type Response = Connection<T, TcpStream>;
     type Error = ConnectError;
     type Future = TcpConnectorResponse<T>;
@@ -90,8 +62,6 @@ impl<T: Address> Service<Connect<T>> for TcpConnector<T> {
     }
 }
 
-type LocalBoxFuture<'a, T> = Pin<Box<dyn Future<Output = T> + 'a>>;
-
 #[doc(hidden)]
 /// TCP stream connector response future
 pub enum TcpConnectorResponse<T> {
@@ -165,7 +135,7 @@ impl<T: Address> Future for TcpConnectorResponse<T> {
                                 port,
                             );
                             if addrs.is_none() || addrs.as_ref().unwrap().is_empty() {
-                                return Poll::Ready(Err(err.into()));
+                                return Poll::Ready(Err(ConnectError::Io(err)));
                             }
                         }
                     }
diff --git a/actix-tls/src/connect/error.rs b/actix-tls/src/connect/error.rs
index 84b363dc..5d8cb9db 100644
--- a/actix-tls/src/connect/error.rs
+++ b/actix-tls/src/connect/error.rs
@@ -1,13 +1,12 @@
 use std::io;
 
-use derive_more::{Display, From};
-use trust_dns_resolver::error::ResolveError;
+use derive_more::Display;
 
-#[derive(Debug, From, Display)]
+#[derive(Debug, Display)]
 pub enum ConnectError {
     /// Failed to resolve the hostname
     #[display(fmt = "Failed resolving hostname: {}", _0)]
-    Resolver(ResolveError),
+    Resolver(Box<dyn std::error::Error>),
 
     /// No dns records
     #[display(fmt = "No dns records found for the input")]
diff --git a/actix-tls/src/connect/mod.rs b/actix-tls/src/connect/mod.rs
index 75312c59..a9c675f6 100644
--- a/actix-tls/src/connect/mod.rs
+++ b/actix-tls/src/connect/mod.rs
@@ -14,67 +14,26 @@ pub mod ssl;
 #[cfg(feature = "uri")]
 mod uri;
 
-use actix_rt::{net::TcpStream, Arbiter};
+use actix_rt::net::TcpStream;
 use actix_service::{pipeline, pipeline_factory, Service, ServiceFactory};
-use trust_dns_resolver::config::{ResolverConfig, ResolverOpts};
-use trust_dns_resolver::system_conf::read_system_conf;
-use trust_dns_resolver::TokioAsyncResolver as AsyncResolver;
-
-pub mod resolver {
-    pub use trust_dns_resolver::config::{ResolverConfig, ResolverOpts};
-    pub use trust_dns_resolver::system_conf::read_system_conf;
-    pub use trust_dns_resolver::{error::ResolveError, AsyncResolver};
-}
 
 pub use self::connect::{Address, Connect, Connection};
 pub use self::connector::{TcpConnector, TcpConnectorFactory};
 pub use self::error::ConnectError;
-pub use self::resolve::{Resolver, ResolverFactory};
+pub use self::resolve::{Resolve, Resolver, ResolverFactory};
 pub use self::service::{ConnectService, ConnectServiceFactory, TcpConnectService};
 
-pub async fn start_resolver(
-    cfg: ResolverConfig,
-    opts: ResolverOpts,
-) -> Result<AsyncResolver, ConnectError> {
-    Ok(AsyncResolver::tokio(cfg, opts)?)
-}
-
-struct DefaultResolver(AsyncResolver);
-
-pub(crate) async fn get_default_resolver() -> Result<AsyncResolver, ConnectError> {
-    if Arbiter::contains_item::<DefaultResolver>() {
-        Ok(Arbiter::get_item(|item: &DefaultResolver| item.0.clone()))
-    } else {
-        let (cfg, opts) = match read_system_conf() {
-            Ok((cfg, opts)) => (cfg, opts),
-            Err(e) => {
-                log::error!("TRust-DNS can not load system config: {}", e);
-                (ResolverConfig::default(), ResolverOpts::default())
-            }
-        };
-
-        let resolver = AsyncResolver::tokio(cfg, opts)?;
-
-        Arbiter::set_item(DefaultResolver(resolver.clone()));
-        Ok(resolver)
-    }
-}
-
-pub async fn start_default_resolver() -> Result<AsyncResolver, ConnectError> {
-    get_default_resolver().await
-}
-
 /// Create TCP connector service.
 pub fn new_connector<T: Address + 'static>(
-    resolver: AsyncResolver,
+    resolver: Resolver,
 ) -> impl Service<Connect<T>, Response = Connection<T, TcpStream>, Error = ConnectError> + Clone
 {
-    pipeline(Resolver::new(resolver)).and_then(TcpConnector::new())
+    pipeline(resolver).and_then(TcpConnector)
 }
 
 /// Create TCP connector service factory.
 pub fn new_connector_factory<T: Address + 'static>(
-    resolver: AsyncResolver,
+    resolver: Resolver,
 ) -> impl ServiceFactory<
     Connect<T>,
     Config = (),
@@ -82,14 +41,14 @@ pub fn new_connector_factory<T: Address + 'static>(
     Error = ConnectError,
     InitError = (),
 > + Clone {
-    pipeline_factory(ResolverFactory::new(resolver)).and_then(TcpConnectorFactory::new())
+    pipeline_factory(ResolverFactory::new(resolver)).and_then(TcpConnectorFactory)
 }
 
 /// Create connector service with default parameters.
 pub fn default_connector<T: Address + 'static>(
 ) -> impl Service<Connect<T>, Response = Connection<T, TcpStream>, Error = ConnectError> + Clone
 {
-    pipeline(Resolver::default()).and_then(TcpConnector::new())
+    new_connector(Resolver::Default)
 }
 
 /// Create connector service factory with default parameters.
@@ -100,5 +59,5 @@ pub fn default_connector_factory<T: Address + 'static>() -> impl ServiceFactory<
     Error = ConnectError,
     InitError = (),
 > + Clone {
-    pipeline_factory(ResolverFactory::default()).and_then(TcpConnectorFactory::new())
+    new_connector_factory(Resolver::Default)
 }
diff --git a/actix-tls/src/connect/resolve.rs b/actix-tls/src/connect/resolve.rs
index 61535faa..6d31f461 100644
--- a/actix-tls/src/connect/resolve.rs
+++ b/actix-tls/src/connect/resolve.rs
@@ -1,184 +1,123 @@
-use std::future::Future;
-use std::marker::PhantomData;
-use std::net::SocketAddr;
-use std::pin::Pin;
-use std::task::{Context, Poll};
+use std::{
+    net::{SocketAddr, ToSocketAddrs},
+    rc::Rc,
+    task::Poll,
+};
 
 use actix_service::{Service, ServiceFactory};
-use futures_util::future::{ok, Either, Ready};
+use futures_core::future::LocalBoxFuture;
 use log::trace;
-use trust_dns_resolver::TokioAsyncResolver as AsyncResolver;
-use trust_dns_resolver::{error::ResolveError, lookup_ip::LookupIp};
 
 use super::connect::{Address, Connect};
 use super::error::ConnectError;
-use super::get_default_resolver;
 
 /// DNS Resolver Service factory
-pub struct ResolverFactory<T> {
-    resolver: Option<AsyncResolver>,
-    _t: PhantomData<T>,
+#[derive(Clone)]
+pub struct ResolverFactory {
+    resolver: Resolver,
 }
 
-impl<T> ResolverFactory<T> {
-    /// Create new resolver instance with custom configuration and options.
-    pub fn new(resolver: AsyncResolver) -> Self {
-        ResolverFactory {
-            resolver: Some(resolver),
-            _t: PhantomData,
-        }
+impl ResolverFactory {
+    pub fn new(resolver: Resolver) -> Self {
+        Self { resolver }
     }
 
-    pub fn service(&self) -> Resolver<T> {
-        Resolver {
-            resolver: self.resolver.clone(),
-            _t: PhantomData,
-        }
+    pub fn service(&self) -> Resolver {
+        self.resolver.clone()
     }
 }
 
-impl<T> Default for ResolverFactory<T> {
-    fn default() -> Self {
-        ResolverFactory {
-            resolver: None,
-            _t: PhantomData,
-        }
-    }
-}
-
-impl<T> Clone for ResolverFactory<T> {
-    fn clone(&self) -> Self {
-        ResolverFactory {
-            resolver: self.resolver.clone(),
-            _t: PhantomData,
-        }
-    }
-}
-
-impl<T: Address> ServiceFactory<Connect<T>> for ResolverFactory<T> {
+impl<T: Address> ServiceFactory<Connect<T>> for ResolverFactory {
     type Response = Connect<T>;
     type Error = ConnectError;
     type Config = ();
-    type Service = Resolver<T>;
+    type Service = Resolver;
     type InitError = ();
-    type Future = Ready<Result<Self::Service, Self::InitError>>;
+    type Future = LocalBoxFuture<'static, Result<Self::Service, Self::InitError>>;
 
     fn new_service(&self, _: ()) -> Self::Future {
-        ok(self.service())
+        let service = self.resolver.clone();
+        Box::pin(async { Ok(service) })
     }
 }
 
 /// DNS Resolver Service
-pub struct Resolver<T> {
-    resolver: Option<AsyncResolver>,
-    _t: PhantomData<T>,
+#[derive(Clone)]
+pub enum Resolver {
+    Default,
+    Custom(Rc<dyn Resolve>),
 }
 
-impl<T> Resolver<T> {
-    /// Create new resolver instance with custom configuration and options.
-    pub fn new(resolver: AsyncResolver) -> Self {
-        Resolver {
-            resolver: Some(resolver),
-            _t: PhantomData,
+/// trait for custom lookup with self defined resolver.
+pub trait Resolve {
+    fn lookup(
+        &self,
+        addrs: Vec<SocketAddr>,
+    ) -> LocalBoxFuture<'_, Result<Vec<SocketAddr>, Box<dyn std::error::Error>>>;
+}
+
+impl Resolver {
+    /// Constructor for custom Resolve trait object and use it as resolver.
+    pub fn new_custom(resolver: impl Resolve + 'static) -> Self {
+        Self::Custom(Rc::new(resolver))
+    }
+
+    async fn lookup<T: Address>(
+        &self,
+        req: &Connect<T>,
+        host: String,
+    ) -> Result<Vec<SocketAddr>, ConnectError> {
+        match self {
+            Self::Default => {
+                let res = tokio::net::lookup_host(host).await.map_err(|e| {
+                    trace!(
+                        "DNS resolver: failed to resolve host {:?} err: {}",
+                        req.host(),
+                        e
+                    );
+                    ConnectError::Resolver(Box::new(e))
+                })?;
+
+                Ok(res.collect())
+            }
+            Self::Custom(resolver) => {
+                let host = host
+                    .to_socket_addrs()
+                    .map_err(|e| ConnectError::Resolver(Box::new(e)))?
+                    .collect();
+                resolver.lookup(host).await.map_err(ConnectError::Resolver)
+            }
         }
     }
 }
 
-impl<T> Default for Resolver<T> {
-    fn default() -> Self {
-        Resolver {
-            resolver: None,
-            _t: PhantomData,
-        }
-    }
-}
-
-impl<T> Clone for Resolver<T> {
-    fn clone(&self) -> Self {
-        Resolver {
-            resolver: self.resolver.clone(),
-            _t: PhantomData,
-        }
-    }
-}
-
-impl<T: Address> Service<Connect<T>> for Resolver<T> {
+impl<T: Address> Service<Connect<T>> for Resolver {
     type Response = Connect<T>;
     type Error = ConnectError;
-    #[allow(clippy::type_complexity)]
-    type Future = Either<
-        Pin<Box<dyn Future<Output = Result<Self::Response, Self::Error>>>>,
-        Ready<Result<Connect<T>, Self::Error>>,
-    >;
+    type Future = LocalBoxFuture<'static, Result<Self::Response, Self::Error>>;
 
     actix_service::always_ready!();
 
     fn call(&mut self, mut req: Connect<T>) -> Self::Future {
-        if req.addr.is_some() {
-            Either::Right(ok(req))
-        } else if let Ok(ip) = req.host().parse() {
-            req.addr = Some(either::Either::Left(SocketAddr::new(ip, req.port())));
-            Either::Right(ok(req))
-        } else {
-            let resolver = self.resolver.as_ref().map(AsyncResolver::clone);
-            Either::Left(Box::pin(async move {
+        let resolver = self.clone();
+        Box::pin(async move {
+            if req.addr.is_some() {
+                Ok(req)
+            } else if let Ok(ip) = req.host().parse() {
+                req.addr = Some(either::Either::Left(SocketAddr::new(ip, req.port())));
+                Ok(req)
+            } else {
                 trace!("DNS resolver: resolving host {:?}", req.host());
-                let resolver = if let Some(resolver) = resolver {
-                    resolver
+
+                let host = if req.host().contains(':') {
+                    req.host().to_string()
                 } else {
-                    get_default_resolver()
-                        .await
-                        .expect("Failed to get default resolver")
+                    format!("{}:{}", req.host(), req.port())
                 };
-                ResolverFuture::new(req, &resolver).await
-            }))
-        }
-    }
-}
 
-type LookupIpFuture = Pin<Box<dyn Future<Output = Result<LookupIp, ResolveError>>>>;
+                let addrs = resolver.lookup(&req, host).await?;
 
-#[doc(hidden)]
-/// Resolver future
-pub struct ResolverFuture<T: Address> {
-    req: Option<Connect<T>>,
-    lookup: LookupIpFuture,
-}
-
-impl<T: Address> ResolverFuture<T> {
-    pub fn new(req: Connect<T>, resolver: &AsyncResolver) -> Self {
-        let host = if let Some(host) = req.host().splitn(2, ':').next() {
-            host
-        } else {
-            req.host()
-        };
-
-        // Clone data to be moved to the lookup future
-        let host_clone = host.to_owned();
-        let resolver_clone = resolver.clone();
-
-        ResolverFuture {
-            lookup: Box::pin(async move {
-                let resolver = resolver_clone;
-                resolver.lookup_ip(host_clone).await
-            }),
-            req: Some(req),
-        }
-    }
-}
-
-impl<T: Address> Future for ResolverFuture<T> {
-    type Output = Result<Connect<T>, ConnectError>;
-
-    fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
-        let this = self.get_mut();
-
-        match Pin::new(&mut this.lookup).poll(cx) {
-            Poll::Pending => Poll::Pending,
-            Poll::Ready(Ok(ips)) => {
-                let req = this.req.take().unwrap();
-                let port = req.port();
-                let req = req.set_addrs(ips.iter().map(|ip| SocketAddr::new(ip, port)));
+                let req = req.set_addrs(addrs);
 
                 trace!(
                     "DNS resolver: host {:?} resolved to {:?}",
@@ -187,19 +126,11 @@ impl<T: Address> Future for ResolverFuture<T> {
                 );
 
                 if req.addr.is_none() {
-                    Poll::Ready(Err(ConnectError::NoRecords))
+                    Err(ConnectError::NoRecords)
                 } else {
-                    Poll::Ready(Ok(req))
+                    Ok(req)
                 }
             }
-            Poll::Ready(Err(e)) => {
-                trace!(
-                    "DNS resolver: failed to resolve host {:?} err: {}",
-                    this.req.as_ref().unwrap().host(),
-                    e
-                );
-                Poll::Ready(Err(e.into()))
-            }
-        }
+        })
     }
 }
diff --git a/actix-tls/src/connect/service.rs b/actix-tls/src/connect/service.rs
index 59fe20cc..9c8d0736 100644
--- a/actix-tls/src/connect/service.rs
+++ b/actix-tls/src/connect/service.rs
@@ -5,38 +5,29 @@ use std::task::{Context, Poll};
 use actix_rt::net::TcpStream;
 use actix_service::{Service, ServiceFactory};
 use either::Either;
-use futures_util::future::{ok, Ready};
-use trust_dns_resolver::TokioAsyncResolver as AsyncResolver;
+use futures_core::future::LocalBoxFuture;
 
 use super::connect::{Address, Connect, Connection};
 use super::connector::{TcpConnector, TcpConnectorFactory};
 use super::error::ConnectError;
 use super::resolve::{Resolver, ResolverFactory};
 
-pub struct ConnectServiceFactory<T> {
-    tcp: TcpConnectorFactory<T>,
-    resolver: ResolverFactory<T>,
+pub struct ConnectServiceFactory {
+    tcp: TcpConnectorFactory,
+    resolver: ResolverFactory,
 }
 
-impl<T> ConnectServiceFactory<T> {
+impl ConnectServiceFactory {
     /// Construct new ConnectService factory
-    pub fn new() -> Self {
+    pub fn new(resolver: Resolver) -> Self {
         ConnectServiceFactory {
-            tcp: TcpConnectorFactory::default(),
-            resolver: ResolverFactory::default(),
-        }
-    }
-
-    /// Construct new connect service with custom dns resolver
-    pub fn with_resolver(resolver: AsyncResolver) -> Self {
-        ConnectServiceFactory {
-            tcp: TcpConnectorFactory::default(),
+            tcp: TcpConnectorFactory,
             resolver: ResolverFactory::new(resolver),
         }
     }
 
     /// Construct new service
-    pub fn service(&self) -> ConnectService<T> {
+    pub fn service(&self) -> ConnectService {
         ConnectService {
             tcp: self.tcp.service(),
             resolver: self.resolver.service(),
@@ -44,7 +35,7 @@ impl<T> ConnectServiceFactory<T> {
     }
 
     /// Construct new tcp stream service
-    pub fn tcp_service(&self) -> TcpConnectService<T> {
+    pub fn tcp_service(&self) -> TcpConnectService {
         TcpConnectService {
             tcp: self.tcp.service(),
             resolver: self.resolver.service(),
@@ -52,44 +43,36 @@ impl<T> ConnectServiceFactory<T> {
     }
 }
 
-impl<T> Default for ConnectServiceFactory<T> {
-    fn default() -> Self {
-        ConnectServiceFactory {
-            tcp: TcpConnectorFactory::default(),
-            resolver: ResolverFactory::default(),
-        }
-    }
-}
-
-impl<T> Clone for ConnectServiceFactory<T> {
+impl Clone for ConnectServiceFactory {
     fn clone(&self) -> Self {
         ConnectServiceFactory {
-            tcp: self.tcp.clone(),
+            tcp: self.tcp,
             resolver: self.resolver.clone(),
         }
     }
 }
 
-impl<T: Address> ServiceFactory<Connect<T>> for ConnectServiceFactory<T> {
+impl<T: Address> ServiceFactory<Connect<T>> for ConnectServiceFactory {
     type Response = Connection<T, TcpStream>;
     type Error = ConnectError;
     type Config = ();
-    type Service = ConnectService<T>;
+    type Service = ConnectService;
     type InitError = ();
-    type Future = Ready<Result<Self::Service, Self::InitError>>;
+    type Future = LocalBoxFuture<'static, Result<Self::Service, Self::InitError>>;
 
     fn new_service(&self, _: ()) -> Self::Future {
-        ok(self.service())
+        let service = self.service();
+        Box::pin(async move { Ok(service) })
     }
 }
 
 #[derive(Clone)]
-pub struct ConnectService<T> {
-    tcp: TcpConnector<T>,
-    resolver: Resolver<T>,
+pub struct ConnectService {
+    tcp: TcpConnector,
+    resolver: Resolver,
 }
 
-impl<T: Address> Service<Connect<T>> for ConnectService<T> {
+impl<T: Address> Service<Connect<T>> for ConnectService {
     type Response = Connection<T, TcpStream>;
     type Error = ConnectError;
     type Future = ConnectServiceResponse<T>;
@@ -99,14 +82,14 @@ impl<T: Address> Service<Connect<T>> for ConnectService<T> {
     fn call(&mut self, req: Connect<T>) -> Self::Future {
         ConnectServiceResponse {
             state: ConnectState::Resolve(self.resolver.call(req)),
-            tcp: self.tcp.clone(),
+            tcp: self.tcp,
         }
     }
 }
 
 enum ConnectState<T: Address> {
-    Resolve(<Resolver<T> as Service<Connect<T>>>::Future),
-    Connect(<TcpConnector<T> as Service<Connect<T>>>::Future),
+    Resolve(<Resolver as Service<Connect<T>>>::Future),
+    Connect(<TcpConnector as Service<Connect<T>>>::Future),
 }
 
 impl<T: Address> ConnectState<T> {
@@ -128,7 +111,7 @@ impl<T: Address> ConnectState<T> {
 
 pub struct ConnectServiceResponse<T: Address> {
     state: ConnectState<T>,
-    tcp: TcpConnector<T>,
+    tcp: TcpConnector,
 }
 
 impl<T: Address> Future for ConnectServiceResponse<T> {
@@ -151,12 +134,12 @@ impl<T: Address> Future for ConnectServiceResponse<T> {
 }
 
 #[derive(Clone)]
-pub struct TcpConnectService<T> {
-    tcp: TcpConnector<T>,
-    resolver: Resolver<T>,
+pub struct TcpConnectService {
+    tcp: TcpConnector,
+    resolver: Resolver,
 }
 
-impl<T: Address + 'static> Service<Connect<T>> for TcpConnectService<T> {
+impl<T: Address + 'static> Service<Connect<T>> for TcpConnectService {
     type Response = TcpStream;
     type Error = ConnectError;
     type Future = TcpConnectServiceResponse<T>;
@@ -166,14 +149,14 @@ impl<T: Address + 'static> Service<Connect<T>> for TcpConnectService<T> {
     fn call(&mut self, req: Connect<T>) -> Self::Future {
         TcpConnectServiceResponse {
             state: TcpConnectState::Resolve(self.resolver.call(req)),
-            tcp: self.tcp.clone(),
+            tcp: self.tcp,
         }
     }
 }
 
 enum TcpConnectState<T: Address> {
-    Resolve(<Resolver<T> as Service<Connect<T>>>::Future),
-    Connect(<TcpConnector<T> as Service<Connect<T>>>::Future),
+    Resolve(<Resolver as Service<Connect<T>>>::Future),
+    Connect(<TcpConnector as Service<Connect<T>>>::Future),
 }
 
 impl<T: Address> TcpConnectState<T> {
@@ -202,7 +185,7 @@ impl<T: Address> TcpConnectState<T> {
 
 pub struct TcpConnectServiceResponse<T: Address> {
     state: TcpConnectState<T>,
-    tcp: TcpConnector<T>,
+    tcp: TcpConnector,
 }
 
 impl<T: Address> Future for TcpConnectServiceResponse<T> {
diff --git a/actix-tls/src/connect/ssl/openssl.rs b/actix-tls/src/connect/ssl/openssl.rs
index 5193ce37..033bb77d 100644
--- a/actix-tls/src/connect/ssl/openssl.rs
+++ b/actix-tls/src/connect/ssl/openssl.rs
@@ -1,23 +1,25 @@
-use std::future::Future;
-use std::marker::PhantomData;
-use std::pin::Pin;
-use std::task::{Context, Poll};
-use std::{fmt, io};
+use std::{
+    fmt,
+    future::Future,
+    io,
+    marker::PhantomData,
+    pin::Pin,
+    task::{Context, Poll},
+};
 
 use actix_codec::{AsyncRead, AsyncWrite};
 use actix_rt::net::TcpStream;
 use actix_service::{Service, ServiceFactory};
-use futures_util::{
-    future::{ready, Either, Ready},
-    ready,
-};
+use futures_core::{future::LocalBoxFuture, ready};
+use futures_util::future::{ready, Either, Ready};
 use log::trace;
+
 pub use openssl::ssl::{Error as SslError, HandshakeError, SslConnector, SslMethod};
 pub use tokio_openssl::SslStream;
-use trust_dns_resolver::TokioAsyncResolver as AsyncResolver;
 
+use crate::connect::resolve::Resolve;
 use crate::connect::{
-    Address, Connect, ConnectError, ConnectService, ConnectServiceFactory, Connection,
+    Address, Connect, ConnectError, ConnectService, ConnectServiceFactory, Connection, Resolver,
 };
 
 /// OpenSSL connector factory
@@ -55,12 +57,11 @@ where
     type Config = ();
     type Service = OpensslConnectorService;
     type InitError = ();
-    type Future = Ready<Result<Self::Service, Self::InitError>>;
+    type Future = LocalBoxFuture<'static, Result<Self::Service, Self::InitError>>;
 
     fn new_service(&self, _: ()) -> Self::Future {
-        ready(Ok(OpensslConnectorService {
-            connector: self.connector.clone(),
-        }))
+        let connector = self.connector.clone();
+        Box::pin(async { Ok(OpensslConnectorService { connector }) })
     }
 }
 
@@ -139,30 +140,30 @@ where
     }
 }
 
-pub struct OpensslConnectServiceFactory<T> {
-    tcp: ConnectServiceFactory<T>,
+pub struct OpensslConnectServiceFactory {
+    tcp: ConnectServiceFactory,
     openssl: OpensslConnector,
 }
 
-impl<T> OpensslConnectServiceFactory<T> {
+impl OpensslConnectServiceFactory {
     /// Construct new OpensslConnectService factory
     pub fn new(connector: SslConnector) -> Self {
         OpensslConnectServiceFactory {
-            tcp: ConnectServiceFactory::default(),
+            tcp: ConnectServiceFactory::new(Resolver::Default),
             openssl: OpensslConnector::new(connector),
         }
     }
 
     /// Construct new connect service with custom DNS resolver
-    pub fn with_resolver(connector: SslConnector, resolver: AsyncResolver) -> Self {
+    pub fn with_resolver(connector: SslConnector, resolver: impl Resolve + 'static) -> Self {
         OpensslConnectServiceFactory {
-            tcp: ConnectServiceFactory::with_resolver(resolver),
+            tcp: ConnectServiceFactory::new(Resolver::new_custom(resolver)),
             openssl: OpensslConnector::new(connector),
         }
     }
 
     /// Construct OpenSSL connect service
-    pub fn service(&self) -> OpensslConnectService<T> {
+    pub fn service(&self) -> OpensslConnectService {
         OpensslConnectService {
             tcp: self.tcp.service(),
             openssl: OpensslConnectorService {
@@ -172,7 +173,7 @@ impl<T> OpensslConnectServiceFactory<T> {
     }
 }
 
-impl<T> Clone for OpensslConnectServiceFactory<T> {
+impl Clone for OpensslConnectServiceFactory {
     fn clone(&self) -> Self {
         OpensslConnectServiceFactory {
             tcp: self.tcp.clone(),
@@ -181,26 +182,27 @@ impl<T> Clone for OpensslConnectServiceFactory<T> {
     }
 }
 
-impl<T: Address + 'static> ServiceFactory<Connect<T>> for OpensslConnectServiceFactory<T> {
+impl<T: Address + 'static> ServiceFactory<Connect<T>> for OpensslConnectServiceFactory {
     type Response = SslStream<TcpStream>;
     type Error = ConnectError;
     type Config = ();
-    type Service = OpensslConnectService<T>;
+    type Service = OpensslConnectService;
     type InitError = ();
-    type Future = Ready<Result<Self::Service, Self::InitError>>;
+    type Future = LocalBoxFuture<'static, Result<Self::Service, Self::InitError>>;
 
     fn new_service(&self, _: ()) -> Self::Future {
-        ready(Ok(self.service()))
+        let service = self.service();
+        Box::pin(async { Ok(service) })
     }
 }
 
 #[derive(Clone)]
-pub struct OpensslConnectService<T> {
-    tcp: ConnectService<T>,
+pub struct OpensslConnectService {
+    tcp: ConnectService,
     openssl: OpensslConnectorService,
 }
 
-impl<T: Address + 'static> Service<Connect<T>> for OpensslConnectService<T> {
+impl<T: Address + 'static> Service<Connect<T>> for OpensslConnectService {
     type Response = SslStream<TcpStream>;
     type Error = ConnectError;
     type Future = OpensslConnectServiceResponse<T>;
@@ -217,7 +219,7 @@ 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>,
+    fut1: Option<<ConnectService as Service<Connect<T>>>::Future>,
     fut2: Option<<OpensslConnectorService as Service<Connection<T, TcpStream>>>::Future>,
     openssl: OpensslConnectorService,
 }
diff --git a/actix-tls/src/connect/ssl/rustls.rs b/actix-tls/src/connect/ssl/rustls.rs
index 390ba413..5eb5bee6 100644
--- a/actix-tls/src/connect/ssl/rustls.rs
+++ b/actix-tls/src/connect/ssl/rustls.rs
@@ -1,18 +1,17 @@
-use std::fmt;
-use std::future::Future;
-use std::pin::Pin;
-use std::sync::Arc;
-use std::task::{Context, Poll};
+use std::{
+    fmt,
+    future::Future,
+    pin::Pin,
+    sync::Arc,
+    task::{Context, Poll},
+};
 
 pub use rustls::Session;
 pub use tokio_rustls::{client::TlsStream, rustls::ClientConfig};
 
 use actix_codec::{AsyncRead, AsyncWrite};
 use actix_service::{Service, ServiceFactory};
-use futures_util::{
-    future::{ready, Ready},
-    ready,
-};
+use futures_core::{future::LocalBoxFuture, ready};
 use log::trace;
 use tokio_rustls::{Connect, TlsConnector};
 use webpki::DNSNameRef;
@@ -53,12 +52,11 @@ where
     type Config = ();
     type Service = RustlsConnectorService;
     type InitError = ();
-    type Future = Ready<Result<Self::Service, Self::InitError>>;
+    type Future = LocalBoxFuture<'static, Result<Self::Service, Self::InitError>>;
 
     fn new_service(&self, _: ()) -> Self::Future {
-        ready(Ok(RustlsConnectorService {
-            connector: self.connector.clone(),
-        }))
+        let connector = self.connector.clone();
+        Box::pin(async { Ok(RustlsConnectorService { connector }) })
     }
 }
 
diff --git a/actix-tls/tests/test_connect.rs b/actix-tls/tests/test_connect.rs
index aa773c7f..7a0074a8 100644
--- a/actix-tls/tests/test_connect.rs
+++ b/actix-tls/tests/test_connect.rs
@@ -7,11 +7,7 @@ use actix_service::{fn_service, Service, ServiceFactory};
 use bytes::Bytes;
 use futures_util::sink::SinkExt;
 
-use actix_tls::connect::{
-    self as actix_connect,
-    resolver::{ResolverConfig, ResolverOpts},
-    Connect,
-};
+use actix_tls::connect::{self as actix_connect, Connect};
 
 #[cfg(all(feature = "connect", feature = "openssl"))]
 #[actix_rt::test]
@@ -57,14 +53,13 @@ async fn test_static_str() {
         })
     });
 
-    let resolver = actix_connect::start_default_resolver().await.unwrap();
-    let mut conn = actix_connect::new_connector(resolver.clone());
+    let mut conn = actix_connect::default_connector();
 
     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 mut conn = actix_connect::default_connector();
     let con = conn.call(connect).await;
     assert!(con.is_err());
 }
@@ -79,12 +74,7 @@ async fn test_new_service() {
         })
     });
 
-    let resolver =
-        actix_connect::start_resolver(ResolverConfig::default(), ResolverOpts::default())
-            .await
-            .unwrap();
-
-    let factory = actix_connect::new_connector_factory(resolver);
+    let factory = actix_connect::default_connector_factory();
 
     let mut conn = factory.new_service(()).await.unwrap();
     let con = conn.call(Connect::with("10", srv.addr())).await.unwrap();
diff --git a/actix-utils/Cargo.toml b/actix-utils/Cargo.toml
index f038414c..c82cf79e 100644
--- a/actix-utils/Cargo.toml
+++ b/actix-utils/Cargo.toml
@@ -17,7 +17,7 @@ path = "src/lib.rs"
 
 [dependencies]
 actix-codec = "0.4.0-beta.1"
-actix-rt = "2.0.0-beta.2"
+actix-rt = { version = "2.0.0-beta.2", default-features = false }
 actix-service = "2.0.0-beta.3"
 
 futures-core = { version = "0.3.7", default-features = false }