Re: [Zope] Wrong mime type sent by Zope on every page

2000-06-09 Thread Jerome Alet

On Thu, 8 Jun 2000, Andrew Diller wrote:

 Server: Zope/Zope 2.1.6 (source release, python 1.5.2, linux2) ZServer/1.1b1
 
 Why does Server: return linux2? This is an Compaq Alpha running Tru64!?!

No. That's what you are told it is.

In fact it's an i386 under GNU/Linux ;-))

bye,
Jerome ALET - [EMAIL PROTECTED] - http://cortex.unice.fr/~jerome
Faculte de Medecine de Nice - http://noe.unice.fr - Tel: 04 93 37 76 30 
28 Avenue de Valombrose - 06107 NICE Cedex 2 - FRANCE



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[Zope] Wrong mime type sent by Zope on every page

2000-06-08 Thread Andrew Diller

Hello:

It was just brought to my attention that Zope (using Zserver) is sending the wrong MIME
type of all its pages.

Here is the header from zope: (some lines have been cut)
--

HTTP/1.0 200 OK
Server: Zope/Zope 2.1.6 (source release, python 1.5.2, linux2) ZServer/1.1b1
Date: Thu, 08 Jun 2000 15:45:23 GMT
Ms-Author-Via: DAV
Content-Type: application/octet-stream
Last-Modified: Thu, 8 Jun 2000 15:45:07 GMT


Here is one from apache:
-

HTTP/1.1 400 Bad Request
Date: Thu, 08 Jun 2000 15:29:59 GMT
Server: Apache/1.3.6 (Unix)
Content-Type: text/html


 I want Zope to be sending text/html, as some browsers want to download the page rather
than view it.

I haven't discovered anywhere to configure this.

I read the Setting the MIME Type of a DTML Method
http://www.zope.org/Members/anser/howto_dtml_mimetype

which claims that you can set the mime type of a method by putting it at the top of the
method. I did this on a test page, but still received the same header from Zope.


Can someone shed some light on this?

1. how to set the mime type for all methods and documents of Zope

2. What is the Ms-Author-Via: DAV in the Zope header? WebDAV?


thanks,

andy diller


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Re: [Zope] Wrong mime type sent by Zope on every page

2000-06-08 Thread Martijn Pieters

On Thu, Jun 08, 2000 at 11:51:03AM -0400, Andrew Diller wrote:
 It was just brought to my attention that Zope (using Zserver) is sending the wrong 
MIME
 type of all its pages.
 
 Here is the header from zope: (some lines have been cut)
 --
 
 HTTP/1.0 200 OK
 Server: Zope/Zope 2.1.6 (source release, python 1.5.2, linux2) ZServer/1.1b1
 Date: Thu, 08 Jun 2000 15:45:23 GMT
 Ms-Author-Via: DAV
 Content-Type: application/octet-stream
 Last-Modified: Thu, 8 Jun 2000 15:45:07 GMT
 
 
 Here is one from apache:
 -
 
 HTTP/1.1 400 Bad Request
 Date: Thu, 08 Jun 2000 15:29:59 GMT
 Server: Apache/1.3.6 (Unix)
 Content-Type: text/html
 
  I want Zope to be sending text/html, as some browsers want to download the page 
rather
 than view it.

You probably did a 'HEAD' request, at which point Zope doesn't render the
page, but rather only acknowledges it's existence by returning above (bogus)
response. 

If you do a 'GET' on your Zope resource, it _will_ be called, at which point
Zope can determine what content type to send. Zope will guess the content type
for you, usually this is text/html, but you can use the How-To you mentioned
to tell Zope otherwise.

-- 
Martijn Pieters
| Software Engineermailto:[EMAIL PROTECTED]
| Digital Creations  http://www.digicool.com/
| Creators of Zope   http://www.zope.org/
|   The Open Source Web Application Server
-

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Re: [Zope] Wrong mime type sent by Zope on every page

2000-06-08 Thread Chris Withers

Martijn Pieters wrote:
 You probably did a 'HEAD' request, at which point Zope doesn't render the
 page, but rather only acknowledges it's existence by returning above (bogus)
 response.

That's not very search engine friendly :(
The head should return the same type as the real document otherwise
what's the point of returning a head at all?!

I think this is in the collector already, but if it isn't, it should
be...

cheers,

Chris

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Re: [Zope] Wrong mime type sent by Zope on every page

2000-06-08 Thread Martijn Pieters

On Thu, Jun 08, 2000 at 06:59:29PM +0100, Chris Withers wrote:
 Martijn Pieters wrote:
  You probably did a 'HEAD' request, at which point Zope doesn't render the
  page, but rather only acknowledges it's existence by returning above (bogus)
  response.
 
 That's not very search engine friendly :(
 The head should return the same type as the real document otherwise
 what's the point of returning a head at all?!

But what if there are side effects to calling the document? What should
happen? I don't want a counter to go up or anything just because a HEAD was
called on the object.

This is not as black-and-white and simple an issue.

-- 
Martijn Pieters
| Software Engineermailto:[EMAIL PROTECTED]
| Digital Creations  http://www.digicool.com/
| Creators of Zope   http://www.zope.org/
|   The Open Source Web Application Server
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Re: [Zope] Wrong mime type sent by Zope on every page

2000-06-08 Thread Chris Withers

Martijn Pieters wrote:
 But what if there are side effects to calling the document? What should
 happen? I don't want a counter to go up or anything just because a HEAD was
 called on the object.
 
 This is not as black-and-white and simple an issue.

The web is an imperfect medium, but returning a junk content type isn't
good.
I don't know the answer to the sideeffects thing, but I would come down
on the site of 'if you expose something through the web, you should
expect to have it spidered...' but that's cause I value search engine
hits a lot.

The trick would be to set the content type when the object is created
and have it stored in the object, not computed for each request.

Would a property suffice for that?

Then, say, if you knew your DTML method was going to return plain text,
you could set the content-type property to text/plain. Thsi could be
returned in the head without having to evaluate the object to return the
head, which is a bit innefficient.

I'm sure that's possible and better than it is now, but at the absolute
least the junk should cover the most likely outcome, ie text/html
instead of application/octet-stream, which is possibly the worst one I
can think to choose ;-)

cheers,

Chris

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RE: [Zope] Wrong mime type sent by Zope on every page

2000-06-08 Thread Brian Lloyd

  But what if there are side effects to calling the document? 
 What should
  happen? I don't want a counter to go up or anything just 
 because a HEAD was
  called on the object.
  
  This is not as black-and-white and simple an issue.
 
 The web is an imperfect medium, but returning a junk content 
 type isn't
 good.

I'll throw out a proposal on this. It also is not perfect, but 
seems to strike a happier balance. When HEAD is called on an 
object, what currently happens is:

  if a 'content_type' attribute exists, it is used

  else if the object's id seems to have a file extension
  (. in the id), try to use guess_content_type

  else fall back to the hated application/octet-stream 
   (or, I've seen x-unknown-content-type used before,
but I don't know if this is really any better).


What if we change this to:

  if a 'content_type' attribute exists, it is used

  else if the object's id seems to have a file extension
  (. in the id), try to use guess_content_type

  else if there is a 'default_content_type' attribute, use that

  else fall back to the hated application/octet-stream 
   (or, I've seen x-unknown-content-type used before,
but I don't know if this is really any better).

Then we could put a 'default_content_type' attribute in the 
class of dtml documents and methods, which would take care of 
the most common case. Thoughts?

Brian Lloyd[EMAIL PROTECTED]
Software Engineer  540.371.6909  
Digital Creations  http://www.digicool.com 



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RE: [Zope] Wrong mime type sent by Zope on every page

2000-06-08 Thread Dan L. Pierson

Brian Lloyd writes:
  What if we change this to:
  
if a 'content_type' attribute exists, it is used
  
else if the object's id seems to have a file extension
(. in the id), try to use guess_content_type
  
else if there is a 'default_content_type' attribute, use that
  
else fall back to the hated application/octet-stream 
 (or, I've seen x-unknown-content-type used before,
  but I don't know if this is really any better).
  
  Then we could put a 'default_content_type' attribute in the 
  class of dtml documents and methods, which would take care of 
  the most common case. Thoughts?

Sounds pretty good.  Setting 'default_content_type' can then be
another item in the unwritten Guide to Writing a Zope Product.

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RE: [Zope] Wrong mime type sent by Zope on every page

2000-06-08 Thread Brian Lloyd


 -Original Message-
 From: Dan L. Pierson [mailto:[EMAIL PROTECTED]]
 Sent: Thursday, June 08, 2000 3:47 PM
 To: Brian Lloyd
 Cc: 'Chris Withers'; Martijn Pieters; Andrew Diller; [EMAIL PROTECTED]
 Subject: RE: [Zope] Wrong mime type sent by Zope on every page
 
 Brian Lloyd writes:
   What if we change this to:
   
 if a 'content_type' attribute exists, it is used
   
 else if the object's id seems to have a file extension
 (. in the id), try to use guess_content_type
   
 else if there is a 'default_content_type' attribute, use that
   
 else fall back to the hated application/octet-stream 
  (or, I've seen x-unknown-content-type used before,
   but I don't know if this is really any better).
   
   Then we could put a 'default_content_type' attribute in the 
   class of dtml documents and methods, which would take care of 
   the most common case. Thoughts?
 
 Sounds pretty good.  Setting 'default_content_type' can then be
 another item in the unwritten Guide to Writing a Zope Product.

That's right - I expect that it could be useful for a few products. 
I can see XMLDocuments having a default of 'text/xml', but I suspect
that a lot of products won't really have to care. Things that have 
no real similarity to conventional "pages" (like database connection 
objects, etc.) are probably useless to a robot that works with "pages"
anyway, so they are better off sending a default non-committal 
response like "application/octet-stream".


Brian Lloyd[EMAIL PROTECTED]
Software Engineer  540.371.6909  
Digital Creations  http://www.digicool.com 




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Re: [Zope] Wrong mime type sent by Zope on every page

2000-06-08 Thread Chris Withers

Brian Lloyd wrote:
 What if we change this to:
 
   if a 'content_type' attribute exists, it is used
 
   else if the object's id seems to have a file extension
   (. in the id), try to use guess_content_type
 
   else if there is a 'default_content_type' attribute, use that

It would be cool if this could be acquired :-)

 
   else fall back to the hated application/octet-stream
(or, I've seen x-unknown-content-type used before,
 but I don't know if this is really any better).
 
 Then we could put a 'default_content_type' attribute in the
 class of dtml documents and methods, which would take care of
 the most common case. Thoughts?

Looks great otherwise :-)

Chris

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