300096 - Images Downloaded But Not Displayed

Status: RESOLVED WORKSFORME

(Core :: Networking, defect)

Description

[Jerry Baker]

Tested with 20050622 Firefox trunk

STEPS TO REPRODICE:
1. Load
http://www.leginfo.ca.gov/cgi-bin/postquery?bill_number=ab_20&sess=CUR&house=B.

RESULT:
Occasionally some of the GIFs do not display and only the ALT text is displayed.
Live HTTP Headers confirms that the image is actually downloaded from the server.

There is no active image blocking, and this is reproducible with a fresh profile.

-----
http://www.leginfo.ca.gov/gif/subscrb.gif

GET /gif/subscrb.gif HTTP/1.1
Host: www.leginfo.ca.gov
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8b2)
Gecko/20050622 Firefox/1.0+
Accept: image/png,*/*;q=0.5
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive
Referer:
http://www.leginfo.ca.gov/cgi-bin/postquery?bill_number=ab_39&sess=CUR&house=B

HTTP/1.x 200 OK
Server: Sun-ONE-Web-Server/6.1
Date: Wed, 06 Jul 2005 14:26:15 GMT
Content-Length: 3641
Content-Type: image/gif
Last-Modified: Thu, 14 Dec 2000 23:42:38 GMT
Etag: "e39-3a395aee"
Accept-Ranges: bytes
Connection: Keep-Alive
-----

Comment 1

[Jerry Baker]

I should add that each time this occurs, it can be a different image that fails
to display, or even several simultaneously. It is frequent (about 50% of the
time) and once an image is loaded, it will always load until Firefox is restarted.

Comment 2

[Jerry Baker]

I have no proxies, transparent or otherwise, and I have no ad blocking software
or memory-resident anti-spyware.

Comment 3

[WADA:World Anti-bad-Duping Agency]

Do you enable pipelining?
See about:config for network.http.pipelining, network.http.pipelining.maxrequests.
If enabled(network.http.pipelining=true), try "Shitf+Reload" then repeat
"Reload" many times.

Comment 4

[Jerry Baker]

Disabling pipelining fixed the issue. -> Networking:HTTP

Comment 5

[Boris Zbarsky [:bzbarsky]]

Could you please do an HTTP log when this problem appears and attach it to this bug?

Comment 6

[Jerry Baker]

Attachment: Zipped log

This is a log with pipelining enabled and where loading a page resulted in a picture not being displayed. The image that did not display on this particular load was "subscrd.gif".

Comment 7

[Boris Zbarsky [:bzbarsky]]

Hmm... I wonder which request got the "400 Bad Request" response from the server...  Darin, could you take a look at the log?  You know this stuff better than I...

Comment 8

[Jerry Baker]

It's the GIF that didn't display. Here's the request:

-----
0[2342f8]: Creating nsHttpTransaction @20fe510
0[2342f8]: nsHttpTransaction::Init [this=20fe510 caps=3]
0[2342f8]: http request [
0[2342f8]:   GET /gif/subscrd.gif HTTP/1.1
0[2342f8]:   Host: www.leginfo.ca.gov
0[2342f8]:   User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.9a1) Gecko/20051025 Firefox/1.6a1
0[2342f8]:   Accept: image/png,*/*;q=0.5
0[2342f8]:   Accept-Language: en-us,en;q=0.5
0[2342f8]:   Accept-Encoding: gzip,deflate
0[2342f8]:   Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
0[2342f8]:   Keep-Alive: 300
0[2342f8]:   Connection: keep-alive
0[2342f8]:   Referer: http://www.leginfo.ca.gov/cgi-bin/postquery?bill_number=ab_1680&sess=CUR&house=B
0[2342f8]: ]
0[2342f8]: nsHttpConnectionMgr::AddTransaction [trans=20fe510 10]
-----

Comment 9

[Jerry Baker]

I think this is the decoded conversation for that connection:

-----
0[2342f8]: Creating nsHttpTransaction @20fe510
0[2342f8]: nsHttpTransaction::Init [this=20fe510 caps=3]
0[2342f8]: http request [
0[2342f8]:   GET /gif/subscrd.gif HTTP/1.1
0[2342f8]:   Host: www.leginfo.ca.gov
0[2342f8]:   User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.9a1) Gecko/20051025 Firefox/1.6a1
0[2342f8]:   Accept: image/png,*/*;q=0.5
0[2342f8]:   Accept-Language: en-us,en;q=0.5
0[2342f8]:   Accept-Encoding: gzip,deflate
0[2342f8]:   Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
0[2342f8]:   Keep-Alive: 300
0[2342f8]:   Connection: keep-alive
0[2342f8]:   Referer: http://www.leginfo.ca.gov/cgi-bin/postquery?bill_number=ab_1680&sess=CUR&house=B
0[2342f8]: ]
0[2342f8]: nsHttpConnectionMgr::AddTransaction [trans=20fe510 10]
1440[15d1fb0]: nsHttpConnectionMgr::OnMsgNewTransaction [trans=20fe510]
1440[15d1fb0]: nsHttpConnectionMgr::GetConnection [ci=..www.leginfo.ca.gov:80 caps=3]
1440[15d1fb0]: nsHttpConnectionMgr::AtActiveConnectionLimit [ci=..www.leginfo.ca.gov:80 caps=3]
1440[15d1fb0]:    total=3, persist=2
1440[15d1fb0]:   at active connection limit!
1440[15d1fb0]:   adding transaction to pending queue [trans=20fe510 pending-count=2]
1440[15d1fb0]: nsHttpPipeline::AddTransaction [this=2100850 trans=20fe510]
1440[15d1fb0]: nsHttpTransaction::OnSocketStatus [this=20fe510 status=804b0006 progress=14751]
1440[15d1fb0]: nsHttpTransaction::ProcessData [this=20fe510 count=666]
1440[15d1fb0]: nsHttpTransaction::ParseHead [count=666]
1440[15d1fb0]: nsHttpTransaction::ParseLine [HTTP/1.0 400 Bad Request]
1440[15d1fb0]: nsHttpResponseHead::ParseVersion [version=HTTP/1.0 400 Bad Request]
1440[15d1fb0]: Have status line [version=10 status=400 statusText=Bad Request]
1440[15d1fb0]: nsHttpTransaction::ParseLine [Connection: Close]
1440[15d1fb0]: nsHttpTransaction::HandleContent [this=20fe510 count=619]
1440[15d1fb0]: nsHttpTransaction::HandleContentStart [this=20fe510]
1440[15d1fb0]: http response [
1440[15d1fb0]:   HTTP/1.0 400 Bad Request
1440[15d1fb0]:   Connection: Close
1440[15d1fb0]: ]
1440[15d1fb0]: nsHttpConnection::OnHeadersAvailable [this=1f0fbd0 trans=20fe510 response-head=219abb0]
1440[15d1fb0]: waiting for the server to close the connection.
1440[15d1fb0]: nsHttpTransaction::HandleContent [this=20fe510 count=619 read=619 mContentRead=619 mContentLength=-1]
1440[15d1fb0]: nsHttpTransaction::Close [this=20fe510 reason=0]
0[2342f8]: nsHttpTransaction::DeleteSelfOnConsumerThread [this=20fe510]
0[2342f8]: Destroying nsHttpTransaction @20fe510
-----

Comment 10

[Darin Fisher]

-> default owner

Comment 11

[Wayne Mery (:wsmwk)]

WFM with pipelining on, and off
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9b3pre) Gecko/2008010705 Minefield/3.0b3pre

feel free to reopen if you still see this.