From b4794b202951a001d40f4e4cff4a76edbb465a0a Mon Sep 17 00:00:00 2001
From: Jan-Philipp Benecke <jan-philipp@bnck.me>
Date: Fri, 7 Mar 2025 10:44:17 +0100
Subject: [PATCH] Set content length when uploading files to WebDAV (#139950)

---
 homeassistant/components/webdav/backup.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/homeassistant/components/webdav/backup.py b/homeassistant/components/webdav/backup.py
index f810547022b..11d0a459852 100644
--- a/homeassistant/components/webdav/backup.py
+++ b/homeassistant/components/webdav/backup.py
@@ -171,6 +171,7 @@ class WebDavBackupAgent(BackupAgent):
             await open_stream(),
             f"{self._backup_path}/{filename_tar}",
             timeout=BACKUP_TIMEOUT,
+            content_length=backup.size,
         )
 
         _LOGGER.debug(