fix(ext/websocket): Fix close code without reason (#27578)

Fixes #27566

The close code wasn't sent if reason was None, defaulting to 1005. This
patch allows sending close code without reason.

ext/websocket/lib.rs

@@ -758,9 +758,14 @@ pub async fn op_ws_close(
     return Ok(());
   };
 
+  const EMPTY_PAYLOAD: &[u8] = &[];
+
   let frame = reason
     .map(|reason| Frame::close(code.unwrap_or(1005), reason.as_bytes()))
-    .unwrap_or_else(|| Frame::close_raw(vec![].into()));
+    .unwrap_or_else(|| match code {
+      Some(code) => Frame::close(code, EMPTY_PAYLOAD),
+      _ => Frame::close_raw(EMPTY_PAYLOAD.into()),
+    });
 
   resource.closed.set(true);
   let lock = resource.reserve_lock();

tests/integration/run_tests.rs

@@ -2663,7 +2663,6 @@ async fn websocket_server_multi_field_connection_header() {
 
   let message = socket.read_frame().await.unwrap();
   assert_eq!(message.opcode, fastwebsockets::OpCode::Close);
-  assert!(message.payload.is_empty());
   socket
     .write_frame(fastwebsockets::Frame::close_raw(vec![].into()))
     .await

tests/unit/websocket_test.ts

@@ -262,7 +262,7 @@ Deno.test({
       socket.onopen = () => socket.send("Hello");
       socket.onmessage = () => {
         socket.send("Bye");
-        socket.close();
+        socket.close(1000);
       };
       socket.onclose = () => ac.abort();
       socket.onerror = () => fail();
@@ -288,7 +288,8 @@ Deno.test({
       seenBye = true;
     }
   };
-  ws.onclose = () => {
+  ws.onclose = (e) => {
+    assertEquals(e.code, 1000);
     deferred.resolve();
   };
   await Promise.all([deferred.promise, server.finished]);