From e027564d2a2a172606a439d96995177801c111fd Mon Sep 17 00:00:00 2001
From: DarkSky <25152247+darkskygit@users.noreply.github.com>
Date: Tue, 8 Jul 2025 18:18:25 +0800
Subject: [PATCH] fix(server): incorrect abort condition (#13100)

fix AI-308
---
 packages/backend/server/src/plugins/copilot/utils.ts | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/packages/backend/server/src/plugins/copilot/utils.ts b/packages/backend/server/src/plugins/copilot/utils.ts
index 9e8ff4343..caa1c4ead 100644
--- a/packages/backend/server/src/plugins/copilot/utils.ts
+++ b/packages/backend/server/src/plugins/copilot/utils.ts
@@ -21,16 +21,19 @@ type SignalReturnType = {
 export function getSignal(req: Request): SignalReturnType {
   const controller = new AbortController();
 
-  let isAborted = true;
+  let hasEnded = false;
   let callback: ((isAborted: boolean) => void) | undefined = undefined;
 
   const onSocketEnd = () => {
-    isAborted = false;
+    hasEnded = true;
   };
   const onSocketClose = (hadError: boolean) => {
     req.socket.off('end', onSocketEnd);
     req.socket.off('close', onSocketClose);
-    const aborted = hadError || isAborted;
+    // NOTE: the connection is considered abnormally interrupted:
+    // 1. there is an error when the socket is closed.
+    // 2. the connection is closed directly without going through the normal end process (the client disconnects actively).
+    const aborted = hadError || !hasEnded;
     if (aborted) {
       controller.abort();
     }