refactor: refactor handle_connection

src/server.rs

@@ -129,6 +129,23 @@ async fn handle_connection(
     let hello = read_hello(&mut conn).await?;
     match hello {
         ControlChannelHello(_, service_digest) => {
+            do_control_channel_handshake(conn, addr, services, control_channels, service_digest)
+                .await?;
+        }
+        DataChannelHello(_, nonce) => {
+            do_data_channel_handshake(conn, control_channels, nonce).await?;
+        }
+    }
+    Ok(())
+}
+
+async fn do_control_channel_handshake(
+    mut conn: TcpStream,
+    addr: SocketAddr,
+    services: Arc<RwLock<HashMap<ServiceDigest, ServerServiceConfig>>>,
+    control_channels: Arc<RwLock<ControlChannelMap>>,
+    service_digest: ServiceDigest,
+) -> Result<()> {
     info!("New control channel incomming from {}", addr);
 
     // Generate a nonce
@@ -198,8 +215,15 @@ async fn handle_connection(
         // Drop the old handle
         let _ = h.insert(service_digest, session_key, handle);
     }
-        }
-        DataChannelHello(_, nonce) => {
+
+    Ok(())
+}
+
+async fn do_data_channel_handshake(
+    conn: TcpStream,
+    control_channels: Arc<RwLock<ControlChannelMap>>,
+    nonce: Nonce,
+) -> Result<()> {
     // Validate
     let control_channels_guard = control_channels.read().await;
     match control_channels_guard.get2(&nonce) {
@@ -215,8 +239,6 @@ async fn handle_connection(
             warn!("Data channel has incorrect nonce");
         }
     }
-        }
-    }
     Ok(())
 }