175936 - Multipart/mixed, containing image/gif, doesn't work

Status: RESOLVED WORKSFORME

(Core :: Networking: HTTP, defect)

Description

[Daniel Hellerstein]

User-Agent:       Mozilla/5.0 (OS/2; U; Warp 4.5; en-US; rv:1.0.1) Gecko/20020919 IBM Web Browser for OS/2
Build Identifier: Mozilla/5.0 (OS/2; U; Warp 4.5; en-US; rv:1.0.1) Gecko/20020919 IBM Web Browser for OS/2

Mozilla does not seem to understand how to display "server push" animation
using a multipart/mixed content-type. 

The example above shows this. What is supposed to happen is a few lines
of text (with a few seconds built-in delay between display of each line),
followed by a set of several GIF images (that simulate an animated gif). Finally,
a few lines of "goodbye" replace the image.

Instead, with Mozilla, the first few lines are displayed, and then the first
image... but then a 
  The image “http://192.168.0.4/multsend?” cannot be displayed, because it
contains errors.

line is displayed.

So perhaps the format of this multipart/mixed paylose is wrong, but ....
it does work under netscape 4.6.1 



Reproducible: Always

Steps to Reproduce:
1. http://www.srehttp.org/multsend?
2.wait, no further user input required. 
3. 

Actual Results:  
as described in the summary

Expected Results:  
as described in the summary

This behavior occurs under the SREhttp-GoServe for OS/2 web server, and under
the SREhttp/2-SRE2002 web server.

I've also tested this using:
  NetScape 4.7 for win98 (it works), 
  NetScape 6.0 for win98 (doesn't recognize multipart/mixed)
  Opera 6.0 for win98 (ends, but only shows first image)
  IE 6.0 (downloads entire file, then asks for application to view with)

If desired, I can email the full contents of the response (including response
headers).

Comment 1

[WD]

Reporter: The URL you reported may be doing something wrong?  I see the image at
the end, but no animation.
Here's a working example of Multipart/x-mixed-replace ("Server Push") with GIF
images:
http://www.fortnet.org/FortNet/HTML/Presentation/animation/

Comment 2

[Daniel Hellerstein]

Yes, the mixed-replace content at 
  http://www.fortnet.org/FortNet/HTML/Presentation/animation/
does work.

i)I noted that you are using a content-type (for the entire response) of
    multipart/x-mixed-replace
 rather then
    multipart/mixed
So, on the script that was failing, I changed the content-type from
multipart/mixed to multipart/x-mixed-replace. This changge did NOT help.

2) I can use a similar script to send multiple text  files with
    no problem. The problem seems to occur when sending text files
    followed by gif file(s).

3) I also have detected a wierd anomaly when sending multiple
   image/gif responses.  From watching  my log, it appears that 
    i) mozilla requests the script
    ii) the first image is sent
   iii) mozilla re-requests the script, but does NOT close the
       first connection
   iv) the instance of the script, launched in step 1, continues to send further   
       images
    v) and, the instance of the script (launched in step iii) ALSO 
       continues to send images 

   Acutally, step iv ends after about 4 image; while step v completes
   as expected (a total of 7 images sent).

    
You can try this out at 
http://srehttp2.srehttp.org:8080/b?

Comment 3

[Frankie]

Daniel, neither your original URL nor the new one are available.

Comment 4

[Mike Kaply [:mkaply]]

This testcase seems to be working better, although it doesn't work at all on IE...

Is there still a problem?

Comment 5

[Asa Dotzler [:asa]]

->default contacts

Comment 6

[Mike Cowperthwaite]

xref bug 174692 -- possibly a dupe.

Comment 7

[Asa Dotzler [:asa]]

The testcase in the URL field worksforme with Mozilla windows build 2004041208.