From 454167f5bd4504d5394536461eb6ddd3f4e0d9bc Mon Sep 17 00:00:00 2001
From: Akilesh Kailash <akailash@google.com>
Date: Sat, 2 Nov 2024 23:43:22 -0700
Subject: [PATCH] libsnapuserd: Handle empty response from server

If server disconnects, then handle the empty response.

Bug: 377068272
Test: Full OTA
Change-Id: Ic48204c457ef924ba9a3c1ae84a3317fb1ccda04
Signed-off-by: Akilesh Kailash <akailash@google.com>
---
 fs_mgr/libsnapshot/snapuserd/snapuserd_client.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/fs_mgr/libsnapshot/snapuserd/snapuserd_client.cpp b/fs_mgr/libsnapshot/snapuserd/snapuserd_client.cpp
index ddefb9f91..7c820f32b 100644
--- a/fs_mgr/libsnapshot/snapuserd/snapuserd_client.cpp
+++ b/fs_mgr/libsnapshot/snapuserd/snapuserd_client.cpp
@@ -311,6 +311,11 @@ double SnapuserdClient::GetMergePercent() {
     }
     std::string response = Receivemsg();
 
+    // If server socket disconnects most likely because of device reboot,
+    // then we just return 0.
+    if (response.empty()) {
+        return 0.0;
+    }
     return std::stod(response);
 }