[Bug] AndroidVolume in Finder fails on file upload / drag-and-drop with Error -36 (WebDAV server is Read-Only)

[sierralx]

Environment

• macOS: macOS 15+ (Apple Silicon)
• Android: Pixel (Android 14/15+)
• AirSync Mac version: 4.0.1
• Feature: AndroidVolume (Finder mount via WebDAV)

Issue Description

When opening the AndroidVolume mounted in Finder (/Users/.../Library/Caches/com.airsync.mac/AndroidVolume) and attempting to drag and drop or copy any file from macOS into any folder (e.g. Download/), the Finder operation immediately fails with:

"The Finder can’t complete the operation because some data in '' can’t be read or written. (Error code -36)"

Root Cause Analysis

Inspecting the mounted WebDAV endpoint (http://<phone-ip>:9081/) reveals that the embedded WebDAV server on the Android app is configured as Read-Only:

Running an OPTIONS request against the server returns:

HTTP/1.1 200 OK
Allow: GET, HEAD, OPTIONS, PROPFIND
DAV: 1, 2

[aashutoshkumarbhardwaj]

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