change: separate out tls feature flags

A successor to http-rs#53, this separates out the tls feature flags, which should be nicer.

Fixes: http-rs#54

Cargo.toml

@@ -20,15 +20,18 @@ features = ["docs"]
 rustdoc-args = ["--cfg", "feature=\"docs\""]
 
 [features]
-default = ["h1_client"]
+default = ["h1_client", "native-tls"]
 docs = ["h1_client", "curl_client", "wasm_client", "hyper_client"]
-h1_client = ["async-h1", "async-std", "async-native-tls", "deadpool", "futures"]
-h1_client_rustls = ["async-h1", "async-std", "async-tls", "deadpool", "futures"]
+
+h1_client = ["async-h1", "async-std", "deadpool", "futures"]
 native_client = ["curl_client", "wasm_client"]
 curl_client = ["isahc", "async-std"]
 wasm_client = ["js-sys", "web-sys", "wasm-bindgen", "wasm-bindgen-futures", "futures"]
 hyper_client = ["hyper", "hyper-tls", "http-types/hyperium_http", "futures-util"]
 
+native-tls = ["async-native-tls"]
+rustls = ["async-tls"]
+
 [dependencies]
 async-trait = "0.1.37"
 dashmap = "4.0.2"

src/h1/mod.rs

@@ -9,9 +9,9 @@ use dashmap::DashMap;
 use deadpool::managed::Pool;
 use http_types::StatusCode;
 
-#[cfg(not(feature = "h1_client_rustls"))]
+#[cfg(feature = "native-tls")]
 use async_native_tls::TlsStream;
-#[cfg(feature = "h1_client_rustls")]
+#[cfg(feature = "rustls")]
 use async_tls::client::TlsStream;
 
 use super::{async_trait, Error, HttpClient, Request, Response};

src/h1/tls.rs

@@ -8,9 +8,9 @@ use deadpool::managed::{Manager, Object, RecycleResult};
 use futures::io::{AsyncRead, AsyncWrite};
 use futures::task::{Context, Poll};
 
-#[cfg(not(feature = "h1_client_rustls"))]
+#[cfg(feature = "native-tls")]
 use async_native_tls::TlsStream;
-#[cfg(feature = "h1_client_rustls")]
+#[cfg(feature = "rustls")]
 use async_tls::client::TlsStream;
 
 use crate::Error;
@@ -76,15 +76,15 @@ impl Manager<TlsStream<TcpStream>, Error> for TlsConnection {
     }
 }
 
-#[cfg(not(feature = "h1_client_rustls"))]
+#[cfg(feature = "native-tls")]
 async fn add_tls(
     host: &str,
     stream: TcpStream,
-) -> Result<async_native_tls::TlsStream<TcpStream>, async_native_tls::Error> {
+) -> Result<TlsStream<TcpStream>, async_native_tls::Error> {
     async_native_tls::connect(host, stream).await
 }
 
-#[cfg(feature = "h1_client_rustls")]
+#[cfg(feature = "rustls")]
 async fn add_tls(host: &str, stream: TcpStream) -> Result<TlsStream<TcpStream>, std::io::Error> {
     let connector = async_tls::TlsConnector::default();
     connector.connect(host, stream).await