Rick,
I appreciate the suggestion. Not resolved yet, but I'm thinking along the
same lines. I don't think it's a case of the browser not being able to read
the data, I think the data isn't getting through. For some reason, with
this data stream, I only get what appears to be the first 48 bytes.
Everything else I've checked comes through fine. Just haven't figured out
why yet. I haven't used Wireshark, but I'll give that a try to see if it
can tell me something the other tools I'm trying can't.
On Wed, May 1, 2013 at 12:22 PM, Richard Sarvas <
[email protected]> wrote:
> Josh,****
>
> In case you haven’t resolved this one yet, I’d suggest using a packet
> sniffer or CURL to see what is going on (provided you are not testing a
> localhost connection). Browsers (by design) have a pesky habit of caching
> images, so in cases like this you can’t always be sure what you are looking
> at (or not) in the browser is what is currently being delivered by the
> server. Wireshark (http://www.wireshark.org/download.html) is my current
> tool of choice but any other packet sniffer would also work. While there
> are easier ways to ways to verify what content is being sent from the
> server (such as the Firebug browser add-on or the CURL command line util) I
> prefer a packet sniffer because that’s just what I’m used to using from my
> client/server app development days. Other HTTP request monitoring tools may
> work better for you.****
>
> ** **
>
> Once you’ve verified that the content is either being delivered or not
> (Fedora XACML policy in place preventing direct access except by
> localhost?) then you can move on to verifying if you browser (or more than
> one) can correctly interpret the TN image data.****
>
> ** **
>
> ** **
>
> Rick****
>
> ** **
>
> ** **
>
> *From:* Josh Wilson [mailto:[email protected]]
> *Sent:* Friday, April 26, 2013 5:08 PM
> *To:* [email protected]
> *Subject:* [fcrepo-user] Issue with TN datastream/PNG images****
>
> ** **
>
> Hi all,
> I'm working on an Islandora install, using Fedora 3.5, on a Windows IIS7
> server.
>
> I've been having an ongoing issue with getting Islandora running, but I
> think I've traced the problem back to something specific with Fedora.
> Fedora doesn't seem to be able to view the TN datastream (a thumbnail PNG
> image that Islandora uses). If I browse around in Fedora, I can view all
> Islandora datastreams except for the TN, which for islandora:root is a
> folder PNG. When I try to see that in the browser (i.e.,
> http://[ipredacted]:8080/fedora35/objects/islandora:root/datastreams/TN/content)
> I
> get an error in Firefox (in IE, I just get the broken image box with a red
> X): ****
>
>
> 'The image “http://[ip
> redacted]:8080/fedora35/objects/islandora:root/datastreams/TN/content”
> cannot be displayed because it contains errors.'****
>
> I know this sort of error can have a lot of causes. I've personally seen
> something like it when I was working with some images that had been saved
> with a CMYK color scheme. But in this case it seems that the image is
> either being truncated or there's some other configuration problem with
> Fedora which prevents it from being served. I'm pretty new to Fedora and
> unfortunately I don't know how to go about diagnosing the problem in
> further detail or fixing it. Any suggestions?****
>
> Some additional observations:****
>
> --Nothing shows up in the Fedora or Tomcat logs when this error occurs.***
> *
>
> --I can see the image fine if I don't go through Fedora, i.e.,
> http://[site name]/[path to image]/folder.png****
>
> --I thought perhaps there was some PNG-specific issue, so I tried
> embedding the folder image into a Tomcat page
> ($CATALINA_HOME/webapps/ROOT/index.html), but when I go to localhost:8080
> it shows up.****
>
> Thanks for any help.****
>
>
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