bendras / nwebdav

.NET implementation of the WebDAV protocol

NWebDAV

.NET implementation of a WebDAV server.

Overview

I needed a WebDAV server implementation for C#, but I couldn't find an implementation that fulfilled my needs. That's why I wrote my own.

Requirements

• Fast, scalable, robust with moderate memory usage.
• Abstract data store, so it can be used for directories/files but also for any other data.
• Abstract locking providers, so it can use in-memory locking (small servers) or Redis (large installations).
• Flexible and extensible property management.
• Fully supports .NET framework, Mono and the Core CLR.
• Allows for various HTTP authentication and SSL support (basic authentication works).

WebDAV client on Windows Vista/7

The Windows Vista/7 WebDAV client is implemented poorly. We have support for this client since the 0.1.7 release.

• It required the 'D' namespace prefix on all DAV related XML nodes. XML namespaces without prefixes are not supported.
• It cannot deal with XML date time format (ISO 8601) in a decent manner. It processes the fraction part as milliseconds, which is wrong. Milliseconds can be between 0 and 999, where a fraction can have more than 3 digits. The difference is subtle. 2016-04-14T01:02:03.12 denotes 120ms, but it could be parsed as 12ms by Windows 7 clients. 2016-04-14T01:02:03.1234 denotes 123.4ms, but cannot be parsed when using integers. Windows 7 clients don't accept this format. For that reason we will not output more than 3 digits for the fraction part.

Windows 7 client might perform very bad when connecting to any WebDAV server (not related to this specific implementation). This is caused, because it tries to auto-detect any proxy server before any request. Refer to KB2445570 for more information.

Work in progress

This module is currently work-in-progress and shouldn't be used for production use yet. If you want to help, then let me know... The following features are currently missing:

• Only the in-memory locking provider has been implemented yet.
• Check if each call responds with the proper status codes (as defined in the WebDAV specification).
• Recursive locking is not supported yet.
• We should have compatibility flags that can be used to implement quirks for bad WebDAV clients. We can detect the client based on the User-Agent and provide support for it.

The current version seems to work fine to serve files using WebDAV on both Windows and OS X.