Migrate actix-net to std::future (#64)

* Migrate actix-codec, actix-rt, and actix-threadpool to std::future

* update to latest tokio alpha and futures-rs

* Migrate actix-service to std::future,

This is a squash of ~8 commits, since it included a lot of experimentation. To see the commits,
look into the semtexzv/std-future-service-tmp branch.

* update futures-rs and tokio

* Migrate actix-threadpool to std::future (#59)

* Migrate actix-threadpool to std::future

* Cosmetic refactor

- turn log::error! into log::warn! as it doesn't throw any error
- add Clone and Copy impls for Cancelled making it cheap to operate with
- apply rustfmt

* Bump up crate version to 0.2.0 and pre-fill its changelog

* Disable patching 'actix-threadpool' crate in global workspace as unnecessary

* Revert patching and fix 'actix-rt'

* Migrate actix-rt to std::future (#47)

* remove Pin from Service::poll_ready(); simplify combinators api; make code compile

* disable tests

* update travis config

* refactor naming

* drop IntoFuture trait

* Migrate actix-server to std::future (#50)

Still not finished, this is more WIP, this is an aggregation of several commits, which
can be found in semtexzv/std-future-server-tmp branch

* update actix-server

* rename Factor to ServiceFactory

* start server worker in start mehtod

* update actix-utils

* remove IntoTransform trait

* Migrate actix-server::ssl::nativetls to std futures (#61)

* Refactor 'nativetls' module

* Migrate 'actix-server-config' to std futures

- remove "uds" feature
- disable features by default

* Switch NativeTlsAcceptor to use 'tokio-tls' crate

* Bikeshed features names and remove unnecessary dependencies for 'actix-server-config' crate

* update openssl impl

* migrate actix-connect to std::future

* migrate actix-ioframe to std::future

* update version to alpha.1

* fix boxed service

* migrate server rustls support

* migratte openssl and rustls connecttors

* store the thread's handle with arbiter (#62)

* update ssl connect tests

* restore service tests

* update readme

actix-testing/src/lib.rs

@@ -3,12 +3,12 @@ use std::sync::mpsc;
 use std::{net, thread};
 
 use actix_rt::System;
-use actix_server::{Server, ServerBuilder, StreamServiceFactory};
+use actix_server::{Server, ServerBuilder, ServiceFactory};
 pub use actix_server_config::{Io, ServerConfig};
 
 use net2::TcpBuilder;
-use tokio_reactor::Handle;
-use tokio_tcp::TcpStream;
+use tokio_net::driver::Handle;
+use tokio_net::tcp::TcpStream;
 
 mod rt;
 pub use self::rt::*;
@@ -21,12 +21,12 @@ pub use self::rt::*;
 /// # Examples
 ///
 /// ```rust
-/// use actix_service::{service_fn, IntoNewService};
+/// use actix_service::{service_fn};
 /// use actix_testing::TestServer;
 ///
 /// fn main() {
 ///     let srv = TestServer::with(|| service_fn(
-///         |sock| {
+///         |sock| async move {
 ///             println!("New connection: {:?}", sock);
 ///             Ok::<_, ()>(())
 ///         }
@@ -75,7 +75,7 @@ impl TestServer {
     }
 
     /// Start new test server with application factory
-    pub fn with<F: StreamServiceFactory<TcpStream>>(factory: F) -> TestServerRuntime {
+    pub fn with<F: ServiceFactory<TcpStream>>(factory: F) -> TestServerRuntime {
         let (tx, rx) = mpsc::channel();
 
         // run server in separate thread

actix-testing/src/rt.rs

@@ -1,9 +1,11 @@
 //! Various helpers for Actix applications to use during testing.
 use std::cell::RefCell;
+use std::future::Future;
 
 use actix_rt::{System, SystemRunner};
 use actix_service::Service;
-use futures::future::{lazy, Future, IntoFuture};
+use futures::future::{lazy, FutureExt};
+// use futures_util::future::FutureExt;
 
 thread_local! {
     static RT: RefCell<Inner> = {
@@ -35,11 +37,11 @@ impl Drop for Inner {
 ///
 /// Note that this function is intended to be used only for testing purpose.
 /// This function panics on nested call.
-pub fn block_on<F>(f: F) -> Result<F::Item, F::Error>
+pub fn block_on<F>(f: F) -> F::Output
 where
-    F: IntoFuture,
+    F: Future,
 {
-    RT.with(move |rt| rt.borrow_mut().get_mut().block_on(f.into_future()))
+    RT.with(move |rt| rt.borrow_mut().get_mut().block_on(f))
 }
 
 /// Runs the provided function, blocking the current thread until the result
@@ -52,21 +54,21 @@ where
 ///
 /// Note that this function is intended to be used only for testing purpose.
 /// This function panics on nested call.
-pub fn block_fn<F, R>(f: F) -> Result<R::Item, R::Error>
+pub fn block_fn<F, R>(f: F) -> F::Output
 where
     F: FnOnce() -> R,
-    R: IntoFuture,
+    R: Future,
 {
-    RT.with(move |rt| rt.borrow_mut().get_mut().block_on(lazy(f)))
+    RT.with(move |rt| rt.borrow_mut().get_mut().block_on(lazy(|_| f())))
 }
 
 /// Spawn future to the current test runtime.
 pub fn spawn<F>(fut: F)
 where
-    F: Future<Item = (), Error = ()> + 'static,
+    F: Future + 'static,
 {
     run_on(move || {
-        actix_rt::spawn(fut);
+        actix_rt::spawn(fut.map(|_| ()));
     });
 }
 
@@ -78,12 +80,7 @@ pub fn run_on<F, R>(f: F) -> R
 where
     F: FnOnce() -> R,
 {
-    RT.with(move |rt| {
-        rt.borrow_mut()
-            .get_mut()
-            .block_on(lazy(|| Ok::<_, ()>(f())))
-    })
-    .unwrap()
+    RT.with(move |rt| rt.borrow_mut().get_mut().block_on(lazy(|_| f())))
 }
 
 /// Calls service and waits for response future completion.