Use immutable reference of service state. Update awc dns resolver. (#1905)

awc/src/builder.rs

@@ -1,4 +1,3 @@
-use std::cell::RefCell;
 use std::convert::TryFrom;
 use std::fmt;
 use std::rc::Rc;
@@ -24,7 +23,7 @@ pub struct ClientBuilder {
     conn_window_size: Option<u32>,
     headers: HeaderMap,
     timeout: Option<Duration>,
-    connector: Option<RefCell<Box<dyn Connect>>>,
+    connector: Option<Box<dyn Connect>>,
 }
 
 impl Default for ClientBuilder {
@@ -56,7 +55,7 @@ impl ClientBuilder {
         <T::Response as Connection>::Future: 'static,
         T::Future: 'static,
     {
-        self.connector = Some(RefCell::new(Box::new(ConnectorWrapper(connector))));
+        self.connector = Some(Box::new(ConnectorWrapper(connector)));
         self
     }
 
@@ -182,9 +181,7 @@ impl ClientBuilder {
             if let Some(val) = self.stream_window_size {
                 connector = connector.initial_window_size(val)
             };
-            RefCell::new(
-                Box::new(ConnectorWrapper(connector.finish())) as Box<dyn Connect>
-            )
+            Box::new(ConnectorWrapper(connector.finish())) as _
         };
         let config = ClientConfig {
             headers: self.headers,

awc/src/connect.rs

@@ -20,14 +20,14 @@ pub(crate) struct ConnectorWrapper<T>(pub T);
 
 pub(crate) trait Connect {
     fn send_request(
-        &mut self,
+        &self,
         head: RequestHead,
         body: Body,
         addr: Option<net::SocketAddr>,
     ) -> Pin<Box<dyn Future<Output = Result<ClientResponse, SendRequestError>>>>;
 
     fn send_request_extra(
-        &mut self,
+        &self,
         head: Rc<RequestHead>,
         extra_headers: Option<HeaderMap>,
         body: Body,
@@ -36,7 +36,7 @@ pub(crate) trait Connect {
 
     /// Send request, returns Response and Framed
     fn open_tunnel(
-        &mut self,
+        &self,
         head: RequestHead,
         addr: Option<net::SocketAddr>,
     ) -> Pin<
@@ -52,7 +52,7 @@ pub(crate) trait Connect {
 
     /// Send request and extra headers, returns Response and Framed
     fn open_tunnel_extra(
-        &mut self,
+        &self,
         head: Rc<RequestHead>,
         extra_headers: Option<HeaderMap>,
         addr: Option<net::SocketAddr>,
@@ -78,7 +78,7 @@ where
     T::Future: 'static,
 {
     fn send_request(
-        &mut self,
+        &self,
         head: RequestHead,
         body: Body,
         addr: Option<net::SocketAddr>,
@@ -101,7 +101,7 @@ where
     }
 
     fn send_request_extra(
-        &mut self,
+        &self,
         head: Rc<RequestHead>,
         extra_headers: Option<HeaderMap>,
         body: Body,
@@ -126,7 +126,7 @@ where
     }
 
     fn open_tunnel(
-        &mut self,
+        &self,
         head: RequestHead,
         addr: Option<net::SocketAddr>,
     ) -> Pin<
@@ -158,7 +158,7 @@ where
     }
 
     fn open_tunnel_extra(
-        &mut self,
+        &self,
         head: Rc<RequestHead>,
         extra_headers: Option<HeaderMap>,
         addr: Option<net::SocketAddr>,

awc/src/lib.rs

@@ -93,7 +93,6 @@
 #![doc(html_logo_url = "https://actix.rs/img/logo.png")]
 #![doc(html_favicon_url = "https://actix.rs/favicon.ico")]
 
-use std::cell::RefCell;
 use std::convert::TryFrom;
 use std::rc::Rc;
 use std::time::Duration;
@@ -145,7 +144,7 @@ use self::connect::{Connect, ConnectorWrapper};
 pub struct Client(Rc<ClientConfig>);
 
 pub(crate) struct ClientConfig {
-    pub(crate) connector: RefCell<Box<dyn Connect>>,
+    pub(crate) connector: Box<dyn Connect>,
     pub(crate) headers: HeaderMap,
     pub(crate) timeout: Option<Duration>,
 }
@@ -153,9 +152,7 @@ pub(crate) struct ClientConfig {
 impl Default for Client {
     fn default() -> Self {
         Client(Rc::new(ClientConfig {
-            connector: RefCell::new(Box::new(ConnectorWrapper(
-                Connector::new().finish(),
-            ))),
+            connector: Box::new(ConnectorWrapper(Connector::new().finish())),
             headers: HeaderMap::new(),
             timeout: Some(Duration::from_secs(5)),
         }))

awc/src/sender.rs

@@ -183,15 +183,13 @@ impl RequestSender {
     where
         B: Into<Body>,
     {
-        let mut connector = config.connector.borrow_mut();
-
         let fut = match self {
             RequestSender::Owned(head) => {
-                connector.send_request(head, body.into(), addr)
-            }
-            RequestSender::Rc(head, extra_headers) => {
-                connector.send_request_extra(head, extra_headers, body.into(), addr)
+                config.connector.send_request(head, body.into(), addr)
             }
+            RequestSender::Rc(head, extra_headers) => config
+                .connector
+                .send_request_extra(head, extra_headers, body.into(), addr),
         };
 
         SendClientRequest::new(fut, response_decompress, timeout.or(config.timeout))

awc/src/ws.rs

@@ -325,11 +325,7 @@ impl WebsocketsRequest {
         let max_size = self.max_size;
         let server_mode = self.server_mode;
 
-        let fut = self
-            .config
-            .connector
-            .borrow_mut()
-            .open_tunnel(head, self.addr);
+        let fut = self.config.connector.open_tunnel(head, self.addr);
 
         // set request timeout
         let (head, framed) = if let Some(to) = self.config.timeout {