From 55347ed6a59d51edd7a1b1867682cf751fb900be Mon Sep 17 00:00:00 2001
From: Tim Ledbetter <timledbetter@gmail.com>
Date: Sun, 2 Apr 2023 21:04:27 +0100
Subject: [PATCH] ChessEngine: Gracefully handle GUI disconnections

---
 Userland/Services/ChessEngine/ChessEngine.cpp | 6 ++++++
 Userland/Services/ChessEngine/ChessEngine.h   | 1 +
 2 files changed, 7 insertions(+)

diff --git a/Userland/Services/ChessEngine/ChessEngine.cpp b/Userland/Services/ChessEngine/ChessEngine.cpp
index a5395cb906..70a3a5d554 100644
--- a/Userland/Services/ChessEngine/ChessEngine.cpp
+++ b/Userland/Services/ChessEngine/ChessEngine.cpp
@@ -68,3 +68,9 @@ void ChessEngine::handle_quit()
     if (on_quit)
         on_quit(ESUCCESS);
 }
+
+void ChessEngine::handle_unexpected_eof()
+{
+    if (on_quit)
+        on_quit(EPIPE);
+}
diff --git a/Userland/Services/ChessEngine/ChessEngine.h b/Userland/Services/ChessEngine/ChessEngine.h
index 37ae88603b..1ffd6ea237 100644
--- a/Userland/Services/ChessEngine/ChessEngine.h
+++ b/Userland/Services/ChessEngine/ChessEngine.h
@@ -19,6 +19,7 @@ public:
     virtual void handle_position(Chess::UCI::PositionCommand const&) override;
     virtual void handle_go(Chess::UCI::GoCommand const&) override;
     virtual void handle_quit() override;
+    virtual void handle_unexpected_eof() override;
 
     Function<void(int)> on_quit;