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Re: trouble connecting to IIS5 from OS X PB

From: Greg Stein <gstein@lyra.org>
Date: Fri, 2 Mar 2001 14:44:59 -0800
To: "Benn, Paul" <paul.benn@netapp.com>, warner.c@apple.com
Cc: "'w3c-dist-auth@w3.org'" <w3c-dist-auth@w3.org>
Message-ID: <20010302144459.L2297@lyra.org>
This is a bug in the MacOS X client DAV library. When it does a PROPFIND, it
doesn't send a Content-Length (as you can see below). A friend of mine at
Adobe just ran into this a week or two ago during some interoperability
testing, but I thought it was just their URLAccess library (rather than a
general issue).

The rules on Content-Length are specified in section 4.4 of RFC 2616.

If a C-L isn't provided, then Apache happens to use a length==0 and assume
there is no body (i.e. if there is, then it'll monkey up the next request).
IIS returns 411. Both are valid approaches.

My Adobe friend just manually inserted a Content-Length: 0 in the request
header when operating on the MacOS platform. That is doable from code, of
course; if their webdavfs doesn't do it (I can't tell what you're using to
talk to the IIS5 box), then you're stuck.

Cheers,
-g

On Thu, Mar 01, 2001 at 06:41:19PM -0800, Benn, Paul wrote:
> Sorry if this isn't really the right place to ask this question.....  In
> experimenting with WebDAV, we can connect to an IIS 5 machine from every MS
> client that we've tried. When we attempt from OS X, we get the error: "The
> operation could not be completed because the item could not be found."
> Could we have a configuration error or is there something known to be broken
> in OS X PB?
> 
> Thanks for any advice.
> 
> Paul
> 
> 
> Here's a trace:
> 
> Hello World!
> Arguments given:
> Arg # 1: pbmac2.cap
> File signature: GMBU
> Frame: 1 client -> server  1077  ____S_
> Frame: 2 server -> client  1077  _A__S_
> Frame: 3 client -> server  1077  _A____
> Frame: 4 client -> server  1077  _AP___
> OPTIONS / HTTP/1.1 User-Agent: fetch/1.0 Darwin/1.2 (Power Macintosh)
> Accept: */* Host: clab-c1-21.win2ktest.lab.netapp.com:80  Frame: 5 server ->
> client  1077  _AP___
> HTTP/1.1 200 OK Server: Microsoft-IIS/5.0 Date: Thu, 01 Mar 2001 22:46:33
> GMT MS-Author-Via: DAV Content-Length: 0 Accept-Ranges: none DASL: <DAV:sql>
> DAV: 1, 2 Public: OPTIONS, TRACE, GET, HEAD, DELETE, PUT, POST, COPY, MOVE,
> MKCOL, PROPFIND, PROPPATCH, LOCK, UNLOCK, SEARCH Allow: OPTIONS, TRACE, GET,
> HEAD, DELETE, COPY, MOVE, PROPFIND, PROPPATCH, SEARCH, MKCOL, LOCK, UNLOCK
> Cache-Control: private  Frame: 6 client -> server  1077  _AP___
> PROPFIND / HTTP/1.1 User-Agent: fetch/1.0 Darwin/1.2 (Power Macintosh)
> Accept: */* Host: clab-c1-21.win2ktest.lab.netapp.com:80 Depth: 0  Frame: 7
> server -> client  1077  _AP___
> HTTP/1.1 411 Length Required Server: Microsoft-IIS/5.0 Date: Thu, 01 Mar
> 2001 22:46:33 GMT Connection: close Content-Type: text/html Content-Length:
> 50  Frame: 8 server -> client  1077  _AP__F
> <body><h2>HTTP/1.1 411 Length Required</h2></body>Frame: 9 client -> server
> 1077  _A____
> Frame: 10 client -> server  1077  _A___F
> Frame: 11 server -> client  1077  _A____
> Goodbye.

-- 
Greg Stein, http://www.lyra.org/
Received on Friday, 2 March 2001 17:44:59 GMT

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