Allow configuration of outbound substream in OneShotHandler. (#1521)

Co-authored-by: Pierre Krieger <pierre.krieger1708@gmail.com>

swarm/src/protocols_handler/one_shot.rs

@@ -54,8 +54,8 @@ where
     max_dial_negotiated: u32,
     /// Value to return from `connection_keep_alive`.
     keep_alive: KeepAlive,
-    /// After the given duration has elapsed, an inactive connection will shutdown.
-    inactive_timeout: Duration,
+    /// The configuration container for the handler
+    config: OneShotHandlerConfig,
 }
 
 impl<TInProto, TOutProto, TOutEvent>
@@ -67,7 +67,7 @@ where
     #[inline]
     pub fn new(
         listen_protocol: SubstreamProtocol<TInProto>,
-        inactive_timeout: Duration
+        config: OneShotHandlerConfig,
     ) -> Self {
         OneShotHandler {
             listen_protocol,
@@ -77,7 +77,7 @@ where
             dial_negotiated: 0,
             max_dial_negotiated: 8,
             keep_alive: KeepAlive::Yes,
-            inactive_timeout,
+            config
         }
     }
 
@@ -121,7 +121,10 @@ where
 {
     #[inline]
     fn default() -> Self {
-        OneShotHandler::new(SubstreamProtocol::new(Default::default()), Duration::from_secs(10))
+        OneShotHandler::new(
+            SubstreamProtocol::new(Default::default()),
+            OneShotHandlerConfig::default()
+        )
     }
 }
 
@@ -157,7 +160,7 @@ where
     ) {
         // If we're shutting down the connection for inactivity, reset the timeout.
         if !self.keep_alive.is_yes() {
-            self.keep_alive = KeepAlive::Until(Instant::now() + self.inactive_timeout);
+            self.keep_alive = KeepAlive::Until(Instant::now() + self.config.inactive_timeout);
         }
 
         self.events_out.push(out.into());
@@ -172,7 +175,7 @@ where
         self.dial_negotiated -= 1;
 
         if self.dial_negotiated == 0 && self.dial_queue.is_empty() {
-            self.keep_alive = KeepAlive::Until(Instant::now() + self.inactive_timeout);
+            self.keep_alive = KeepAlive::Until(Instant::now() + self.config.inactive_timeout);
         }
 
         self.events_out.push(out.into());
@@ -224,7 +227,8 @@ where
                 self.dial_negotiated += 1;
                 return Poll::Ready(
                     ProtocolsHandlerEvent::OutboundSubstreamRequest {
-                        protocol: SubstreamProtocol::new(self.dial_queue.remove(0)),
+                        protocol: SubstreamProtocol::new(self.dial_queue.remove(0))
+                            .with_timeout(self.config.substream_timeout),
                         info: (),
                     },
                 );
@@ -236,3 +240,21 @@ where
         Poll::Pending
     }
 }
+
+/// Configuration parameters for the `OneShotHandler`
+#[derive(Debug)]
+pub struct OneShotHandlerConfig {
+    /// After the given duration has elapsed, an inactive connection will shutdown.
+    inactive_timeout: Duration,
+    /// Timeout duration for each newly opened outbound substream.
+    substream_timeout: Duration,
+}
+
+impl Default for OneShotHandlerConfig {
+    fn default() -> Self {
+        let inactive_timeout = Duration::from_secs(10);
+        let substream_timeout = Duration::from_secs(10);
+        OneShotHandlerConfig { inactive_timeout, substream_timeout }
+    }
+}
+