From d46b86c631b69facfc14e2e416e90fa54e0b38c8 Mon Sep 17 00:00:00 2001
From: Radon Rosborough <radon.neon@gmail.com>
Date: Sat, 18 Sep 2021 10:28:17 -0700
Subject: [PATCH] [#112] Fix race condition with closing sessions

---
 backend/api.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/backend/api.js b/backend/api.js
index 433bc8d..da18dee 100644
--- a/backend/api.js
+++ b/backend/api.js
@@ -155,6 +155,11 @@ export class Session {
         logError(err);
         await this.teardown();
       });
+      // User may have closed websocket before we were able to set up
+      // the onclose listener.
+      if (this.ws.readyState === WebSocket.CLOSED) {
+        await this.teardown();
+      }
     } catch (err) {
       logError(err);
       this.sendError(err);