Add smol runtime support

.github/workflows/ci.yml

@@ -60,6 +60,15 @@ jobs:
       - name: Check async-std-runtime, async-tls, async-native-tls
         run: cargo check --features async-std-runtime,async-tls,async-native-tls
 
+      - name: Check smol-runtime, async-tls
+        run: cargo check --features smol-runtime,async-tls
+
+      - name: Check smol-runtime, async-native-tls
+        run: cargo check --features smol-runtime,async-native-tls
+
+      - name: Check smol-runtime, async-tls, async-native-tls
+        run: cargo check --features smol-runtime,async-tls,async-native-tls
+
       - name: Check tokio-runtime, tokio-native-tls
         run: cargo check --features tokio-runtime,tokio-native-tls
 

Cargo.toml

@@ -19,6 +19,7 @@ default = ["handshake", "futures-03-sink"]
 futures-03-sink = ["futures-util"]
 handshake = ["tungstenite/handshake"]
 async-std-runtime = ["async-std", "handshake"]
+smol-runtime = ["async-net", "handshake"]
 tokio-runtime = ["tokio", "handshake"]
 gio-runtime = ["gio", "glib", "handshake"]
 async-tls = ["real-async-tls", "handshake"]
@@ -34,7 +35,7 @@ url = ["tungstenite/url"]
 __rustls-tls = ["tokio-runtime", "real-tokio-rustls", "rustls-pki-types", "tungstenite/__rustls-tls"]
 
 [package.metadata.docs.rs]
-features = ["async-std-runtime", "tokio-runtime", "gio-runtime", "async-tls", "async-native-tls", "tokio-native-tls"]
+features = ["async-std-runtime", "smol-runtime", "tokio-runtime", "gio-runtime", "async-tls", "async-native-tls", "tokio-native-tls"]
 
 [dependencies]
 log = "0.4"
@@ -58,6 +59,10 @@ default-features = false
 optional = true
 version = "1.0"
 
+[dependencies.async-net]
+optional = true
+version = "2.0"
+
 [dependencies.real-tokio-openssl]
 optional = true
 version = "0.6"
@@ -136,6 +141,11 @@ http-body-util = "0.1"
 version = "0.28"
 features = ["url"]
 
+# For smol examples
+[dependencies.smol]
+optional = true
+version = "2.0"
+
 [[example]]
 name = "autobahn-client"
 required-features = ["async-std-runtime"]
@@ -144,6 +154,10 @@ required-features = ["async-std-runtime"]
 name = "async-std-echo"
 required-features = ["async-std-runtime"]
 
+[[example]]
+name = "smol-echo"
+required-features = ["smol-runtime", "smol"]
+
 [[example]]
 name = "client"
 required-features = ["async-std-runtime"]

examples/smol-echo.rs

@@ -0,0 +1,30 @@
+use async_tungstenite::{smol::connect_async, tungstenite::Message};
+use futures::prelude::*;
+
+async fn run() -> Result<(), Box<dyn std::error::Error>> {
+    #[cfg(any(feature = "async-tls", feature = "async-native-tls"))]
+    let url = "wss://echo.websocket.org/.ws";
+    #[cfg(not(any(feature = "async-tls", feature = "async-native-tls")))]
+    let url = "ws://echo.websocket.org/.ws";
+
+    println!("Connecting: \"{}\"", url);
+    let (mut ws_stream, _) = connect_async(url).await?;
+
+    let msg = ws_stream.next().await.ok_or("didn't receive anything")??;
+    println!("Received: {:?}", msg);
+
+    let text = "Hello, World!";
+
+    println!("Sending: \"{}\"", text);
+    ws_stream.send(Message::text(text)).await?;
+
+    let msg = ws_stream.next().await.ok_or("didn't receive anything")??;
+
+    println!("Received: {:?}", msg);
+
+    Ok(())
+}
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    smol::block_on(run())
+}

src/lib.rs

@@ -90,6 +90,8 @@ pub mod async_std;
 pub mod async_tls;
 #[cfg(feature = "gio-runtime")]
 pub mod gio;
+#[cfg(feature = "smol-runtime")]
+pub mod smol;
 #[cfg(feature = "tokio-runtime")]
 pub mod tokio;
 
@@ -747,6 +749,7 @@ impl<S> Shared<S> {
 #[cfg(any(
     feature = "async-tls",
     feature = "async-std-runtime",
+    feature = "smol-runtime",
     feature = "tokio-runtime",
     feature = "gio-runtime"
 ))]
@@ -779,6 +782,7 @@ pub(crate) fn domain(
 
 #[cfg(any(
     feature = "async-std-runtime",
+    feature = "smol-runtime",
     feature = "tokio-runtime",
     feature = "gio-runtime"
 ))]
@@ -805,6 +809,7 @@ mod tests {
     #[cfg(any(
         feature = "async-tls",
         feature = "async-std-runtime",
+        feature = "smol-runtime",
         feature = "tokio-runtime",
         feature = "gio-runtime"
     ))]