Picture issues

[*89Laredo*]

Re: Important

That filter is the one you suggested...
Ill try some more.

Edit: the 1x1 is a GIF.

 

[ChiXJeff]

Re: Important

It's stored in as a JPEG. Yet another indication that something is rewriting the image on the way through.

 

[*89Laredo*]

Re: Important

Think Im getting closer...

GET /forum/picture.php?albumid=156&pictureid=2482 HTTP/1.1

Host: www.naxja.org

User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:15.0) Gecko/20100101 Firefox/15.0.1

Accept: image/png,image/*;q=0.8,*/*;q=0.5

Accept-Language: en-us,en;q=0.5

Accept-Encoding: gzip, deflate

DNT: 1

Connection: keep-alive

Pragma: no-cache

Cache-Control: no-cache



HTTP/1.1 200 OK

Date: Sat, 08 Sep 2012 17:38:11 GMT

Server: Apache/2.2.21 (Unix) mod_ssl/2.2.21 OpenSSL/0.9.8e-fips-rhel5 mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635 PHP/5.2.9

X-Powered-By: PHP/5.2.9

Cache-Control: private

Pragma: private

X-UA-Compatible: IE=7

Content-Length: 43

Keep-Alive: timeout=5, max=100

Connection: Keep-Alive

Content-Type: image/gif



GIF89a.............!.......,...........D..;

 

[*89Laredo*]

Re: Important

Mmm... beer....
I want to learn german.

Jeff, found this:
Compuserve GIF, Version: GIF89a
Version: GIF89a
Screen width: 1
Screen height: 1

packet info is attached, dont know what Im looking for. (wireshark.txt)
The whole stream (11packets) is attached too.

 

[ChiXJeff]

If it's coming in to you as a 1x1 GIF, someone upstream from you, probably your ISP, is running a poorly configured caching proxy server.

 

[*89Laredo*]

Could be.
I'll have to try my phone through wifi and see what happens.

 

[ChiXJeff]

Re: Important

Could be.
I'll have to try my phone through wifi and see what happens.

Tethered? Good test.

 

[*89Laredo*]

Weird... This is through wifi, same internet connection as my laptop.

 

[*89Laredo*]

Re: Important

Tethered? Good test.

Sending this Tethered, using Verizon Internet. (you can check the IP)
Does the same thing. Tried FF and IE.

Viewed Post 39467 with my phones browser instead of Tapatalk, it doesnt show up there either. Thats on Verizon 3G.

 

[ChiXJeff]

Re: Important

Sending this Tethered, using Verizon Internet. (you can check the IP)
Does the same thing. Tried FF and IE.

Viewed Post 39467 with my phones browser instead of Tapatalk, it doesnt show up there either. Thats on Verizon 3G.

<scratches head> I'm having a hard time keeping this all straight.

You've got at least 2 separate Internet connections, your wired landlines and your cellphone data plan.

You've got a browser in your phone, on your computer, and your mother's computer.

I see at least 5 separate tests to be performed, viewed the problematic post (full refresh every time

1) Your computer, landline connection.
2) Your computer, tethered to your cellphone connection.
3) Your phone's browser, on it's cellular connection
4) Your phone's browser, on your WiFi through your landline connection.
5) Your mother's computer, on it's landline connection.

Make sure you clear browser cache before changing connections on a device, otherwise an earlier successful test can mask a later unsuccessful test.

 

[*89Laredo*]

<scratches head> I'm having a hard time keeping this all straight.

You've got at least 2 separate Internet connections, your wired landlines and your cellphone data plan.

You've got a browser in your phone, on your computer, and your mother's computer.

I see at least 5 separate tests to be performed, viewed the problematic post (full refresh every time

1) Your computer, landline connection.
2) Your computer, tethered to your cellphone connection.
3) Your phone's browser, on it's cellular connection
4) Your phone's browser, on your WiFi through your landline connection.
5) Your mother's computer, on it's landline connection.

Make sure you clear browser cache before changing connections on a device, otherwise an earlier successful test can mask a later unsuccessful test.

That's right.

I will try it all again tomorrow and pm the results in an easier to understand form...

 

[ChiXJeff]

Come to think of it..... rather than using a web browser, let's think about using wget (http://gnuwin32.sourceforge.net/packages/wget.htm for windows, Linux usually loads it by default.) No caching, and easy to determine exactly what's coming down.

Now just wait a froggin' minute.... Firefox 15 on Ubuntu just returned a 1x1 GIF (http://naxja.org/forum/picture.php?albumid=156&pictureid=2482.)

 

[ChiXJeff]

Come to think of it..... rather than using a web browser, let's think about using wget (http://gnuwin32.sourceforge.net/packages/wget.htm for windows, Linux usually loads it by default.) No caching, and easy to determine exactly what's coming down.

Now just wait a froggin' minute.... Firefox 15 on Ubuntu just returned a 1x1 GIF (http://naxja.org/forum/picture.php?albumid=156&pictureid=2482.)

This is leaving as a 1x1 GIF89a image. Time to dig down into the vBulletin stuff. Something definitely ain't right.

 

[ChiXJeff]

Re: Important

I think I have referrers and cookies turned off...

*WAIT*. Referrals may be the problem.

wget, executed directly against the picture link, returns a 403, permission denied, error, however, if it's requested as part of a page, i.e. the referral field is filled in, it does come back. Oddly enough, according to my wireshark traces this morning, it is getting sent down as a GIF, not a JPEG. I'll add the referral field to a wget request in a minute, that should succeed.

 

[ChiXJeff]

Re: Important

Nope. Referrals ain't the problem. vBulletin also seems to try rather hard to not allow use of wget.

BTW, here's a better wireshark display filter technique:
http.request.uri contains "2482"

That'll filter out the HTTP request packet where the request contains 2482 (picture ID of the Stella & poker chips image.)

 

[ChiXJeff]

Re: Important

So, what have I figured out this morning....

1) wget ain't that useful for vBulletin testing.
2) direct picture access is also usually not allowed.
3) Right-clicking on the image, and selecting View Image (Firefox) succeeds.
4) Copying the URL from #3, opening a new window/tab, pasting the URL fails.

I'm going to have to pull a wireshark trace from #3 and #4 and compare the HTTP request, byte by byte.

 

[87manche]

see why I was just willing to let it go?
I knew it would be PITA to track down.

I'll get you some HTTP packet infor later tonight. I'm off with the metal detector to find property pins right now.

 

[*89Laredo*]

I shouldnt of mentioned it... lol


Ive tried these with the same results (no image):

1. Firefox on my computer/DSL
2. IE on my computer/DSL
3. Firefox on my moms computer/DSL
4. Firefox on my computer/Verizon 3G
5. IE on my computer/Verizon 3g
6. Firefox at my friends house on his computer/DSL (never been to Naxja)
7. My phone browser on 3G
8. My phone browser on Wifi/DSL

My phone through tapatalk loads the images, through Wifi/DSL OR 3g.

 

[*89Laredo*]

Any updates?

 

[87manche]

I shouldnt of mentioned it... lol


My phone through tapatalk loads the images, through Wifi/DSL OR 3g.

and what wheeler just said made this click in my brains.

http://naxja.org/forum/showthread.php?p=245786398#post245786398

he also uses his phone.
So I think it's something with tapatalk creating the post, because I went into his album, grabbed the image URL and stuffed it in my post just fine and it seems to work.