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2.2.2 MS-Author-Via Response Header

This extension MUST have the following format:

MS-Author-Via = "MS-Author-Via" ": " ("MS-FP/4.0" / "MS-FP/4.0,DAV" / "DAV" / "DAV,MS-FP/4.0" / token ",DAV")

This header field indicates to the issuer of an HTTP OPTIONS command what protocol mechanism is preferred for authoring documents in this particular namespace. The preference MUST be ordered so the first mechanism listed is the one most preferred by the server.

Note  The "token" definition in the preceding grammar is specified in [RFC2616] section 2.2. Its purpose in the grammar is to allow for future extensibility. The WebDAV Server Extensions protocol MAY be extended by adding new tokens to the MS-Author-Via field. Clients MUST ignore tokens in this field that they do not recognize.

The following table lists the values that are currently defined for this header.

Value

Meaning

MS-FP/4.0

The server's preferred method for authoring is the FrontPage Server Extensions.

MS-FP/4.0,DAV

The server's protocol preference for authoring is first the FrontPage Server Extensions (for more information, see [MSDN-FP]), and then WebDAV.

DAV

The server's preferred method for authoring is WebDAV.

DAV,MS-FP/4.0

The server's protocol preference for authoring is first WebDAV, and then the FrontPage Server Extensions (for more information, see [MSDN-FP]).

Token,DAV

The server’s protocol preference for authoring is an extensible token, and then WebDAV.

  • MS-FP/4.0 refers to Microsoft FrontPage Server protocol version 4.0 enabled on the web server. Some applications look for this string and use that protocol to communicate with this web server.

  • DAV is used to indicate that WebDAV is enabled on the WebDAV server, and a WebDAV client MAY use WebDAV commands to communicate with this WebDAV server.

 
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