Question

Access_Log Analysis - Understanding Mysterious Multiple 206's - Partial content

Asked by: Sivakatirswami

I am analyzing access_logs to check on PDF downloads. My "Digger" program written in RunRev, scans 1.5 gigs of 6 accesslogs from Jun28-Aug3, pulls out any lines with a particular PDF in them. I'm trying to determine where and when the problematic Acrobat/Windows web integration is failing (many users browser, or entire system hangs if the PDF is over 5 MB and is trying to load into IE)  My result file from the "dig"  shows multiple 206 - partial content, sessions being served. The PDF size is: 19030363 bytes and a "clean hit" looks like this:

65.55.106.160 - - [27/Jul/2009:02:29:29 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 200 19030363 "-" "msnbot/2.0b (+http://search.msn.com/msnbot.htm)"

but, mostly I have lots of multiple attempts where we see a 200 at the start of the session followed by a series of 206's. The total byte counts of all the 206's is irrational (varies on every session, never adds up to the actual size of the file)

I am showing three cases below, but there are 1000's of these sessions. at least 75% of them include a 200 at the beginning, sometimes in the middle. Some of the 206 session series have no 200 among them for the same IP over the same session. My question(s) are:

1) how can I know, in a case where the logs are registering 206s, whether the person actually go the entire file.

Maybe we can't... if the browser hangs, but there is still an active adobe acrobat process running on the box with an open socket to the server, polling for the next byte range in the file, which never actually opens on the user's machine: the user will never know and neither can the web server know?

2) Why do we see a 200 at the beginning of the session-series followed by multiple 206 partial content codes. And does the 200 indicate the entire file was sent? If so, why is it followed subsequently with so many additional 206 requests?

Here are three examples, all the many others look much the same, though sometimes the 200 code is in the middle of the session somewhere. The 3rd one is the most bizarre, started at 9:32:20... ending at 9:33:40: Eighty(!) 206 requests served to Firefox with a single 200 at the beginning... "What's it all about?" Copy these out to your fav editor and turn off wrap.

========

ONE

76.70.84.23 - - [29/Jul/2009:16:56:27 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 200 19030363 "http://www.hinduismtoday.com/modules/wfdownloads/visit.php?cid=19&lid=25" "Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US) AppleWebKit/530.5 (KHTML, like Gecko) Chrome/2.0.172.37 Safari/530.5"
76.70.84.23 - - [29/Jul/2009:16:56:45 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 746632 "http://www.hinduismtoday.com/archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf" "Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US) AppleWebKit/530.5 (KHTML, like Gecko) Chrome/2.0.172.37 Safari/530.5"
76.70.84.23 - - [29/Jul/2009:16:56:47 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 1035 "http://www.hinduismtoday.com/archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf" "Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US) AppleWebKit/530.5 (KHTML, like Gecko) Chrome/2.0.172.37 Safari/530.5"
76.70.84.23 - - [29/Jul/2009:16:56:49 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 33005 "http://www.hinduismtoday.com/archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf" "Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US) AppleWebKit/530.5 (KHTML, like Gecko) Chrome/2.0.172.37 Safari/530.5"
76.70.84.23 - - [29/Jul/2009:16:56:49 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 30949 "http://www.hinduismtoday.com/archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf" "Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US) AppleWebKit/530.5 (KHTML, like Gecko) Chrome/2.0.172.37 Safari/530.5"
76.70.84.23 - - [29/Jul/2009:16:56:50 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 33001 "http://www.hinduismtoday.com/archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf" "Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US) AppleWebKit/530.5 (KHTML, like Gecko) Chrome/2.0.172.37 Safari/530.5"
76.70.84.23 - - [29/Jul/2009:16:56:49 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 703832 "http://www.hinduismtoday.com/archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf" "Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US) AppleWebKit/530.5 (KHTML, like Gecko) Chrome/2.0.172.37 Safari/530.5"
76.70.84.23 - - [29/Jul/2009:16:56:56 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 1154650 "http://www.hinduismtoday.com/archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf" "Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US) AppleWebKit/530.5 (KHTML, like Gecko) Chrome/2.0.172.37 Safari/530.5"
76.70.84.23 - - [29/Jul/2009:16:57:01 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 1546723 "http://www.hinduismtoday.com/archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf" "Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US) AppleWebKit/530.5 (KHTML, like Gecko) Chrome/2.0.172.37 Safari/530.5"
76.70.84.23 - - [29/Jul/2009:16:57:06 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 2359920 "http://www.hinduismtoday.com/archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf" "Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US) AppleWebKit/530.5 (KHTML, like Gecko) Chrome/2.0.172.37 Safari/530.5"
76.70.84.23 - - [29/Jul/2009:16:57:13 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 1219067 "http://www.hinduismtoday.com/archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf" "Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US) AppleWebKit/530.5 (KHTML, like Gecko) Chrome/2.0.172.37 Safari/530.5"
76.70.84.23 - - [29/Jul/2009:16:57:15 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 11206313 "http://www.hinduismtoday.com/archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf" "Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US) AppleWebKit/530.5 (KHTML, like Gecko) Chrome/2.0.172.37 Safari/530.5"

TWO

58.185.0.114 - - [30/Jul/2009:00:50:17 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 200 19030363 "-" "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; SLCC1; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30618)"
58.185.0.114 - - [30/Jul/2009:00:50:20 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 798 "-" "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; SLCC1; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30618)"
58.185.0.114 - - [30/Jul/2009:00:50:21 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 4096 "-" "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; SLCC1; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30618)"
58.185.0.114 - - [30/Jul/2009:00:50:22 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 673 "-" "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; SLCC1; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30618)"
58.185.0.114 - - [30/Jul/2009:00:50:18 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 743896 "-" "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; SLCC1; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30618)"
58.185.0.114 - - [30/Jul/2009:00:50:22 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 1760 "-" "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; SLCC1; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30618)"
58.185.0.114 - - [30/Jul/2009:00:50:23 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 2336 "-" "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; SLCC1; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30618)"
58.185.0.114 - - [30/Jul/2009:00:50:24 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 1920123 "-" "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; SLCC1; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30618)"
58.185.0.114 - - [30/Jul/2009:00:50:33 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 1551351 "-" "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; SLCC1; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30618)"
58.185.0.114 - - [30/Jul/2009:00:50:41 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 2359710 "-" "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; SLCC1; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30618)"
58.185.0.114 - - [30/Jul/2009:00:50:53 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 1223229 "-" "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; SLCC1; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30618)"
58.185.0.114 - - [30/Jul/2009:00:50:59 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 1306358 "-" "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; SLCC1; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30618)"
58.185.0.114 - - [30/Jul/2009:00:51:07 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 1094190 "-" "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; SLCC1; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30618)"
58.185.0.114 - - [30/Jul/2009:00:51:14 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 1051943 "-" "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; SLCC1; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30618)"
58.185.0.114 - - [30/Jul/2009:00:51:20 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 1229836 "-" "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; SLCC1; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30618)"
58.185.0.114 - - [30/Jul/2009:00:51:26 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 1247949 "-" "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; SLCC1; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30618)"
58.185.0.114 - - [30/Jul/2009:00:51:33 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 2288852 "-" "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; SLCC1; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30618)"
58.185.0.114 - - [30/Jul/2009:00:51:43 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 2428356 "-" "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; SLCC1; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30618)"
58.185.0.114 - - [30/Jul/2009:00:51:53 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 416330 "-" "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; SLCC1; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30618)"
58.185.0.114 - - [30/Jul/2009:00:51:56 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 175960 "-" "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; SLCC1; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30618)"

THREE

24.147.248.93 - - [19/Jul/2009:09:32:20 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 200 19030363 "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.1) Gecko/20090715 Firefox/3.5.1 (.NET CLR 3.5.30729)"
24.147.248.93 - - [19/Jul/2009:09:32:22 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 18910907 "http://www.hinduismtoday.com/modules/wfdownloads/visit.php?cid=19&lid=25" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.1) Gecko/20090715 Firefox/3.5.1 (.NET CLR 3.5.30729)"
24.147.248.93 - - [19/Jul/2009:09:32:23 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 1035 "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.1) Gecko/20090715 Firefox/3.5.1 (.NET CLR 3.5.30729)"
24.147.248.93 - - [19/Jul/2009:09:32:23 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 1035 "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.1) Gecko/20090715 Firefox/3.5.1 (.NET CLR 3.5.30729)"
24.147.248.93 - - [19/Jul/2009:09:32:22 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 643053 "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.1) Gecko/20090715 Firefox/3.5.1 (.NET CLR 3.5.30729)"
24.147.248.93 - - [19/Jul/2009:09:32:24 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 4333 "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.1) Gecko/20090715 Firefox/3.5.1 (.NET CLR 3.5.30729)"
24.147.248.93 - - [19/Jul/2009:09:32:25 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 910 "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.1) Gecko/20090715 Firefox/3.5.1 (.NET CLR 3.5.30729)"
[snip] Total of 80 lines of 206's!
24.147.248.93 - - [19/Jul/2009:09:33:31 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 673186 "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.1) Gecko/20090715 Firefox/3.5.1 (.NET CLR 3.5.30729)"
24.147.248.93 - - [19/Jul/2009:09:33:31 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 776159 "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.1) Gecko/20090715 Firefox/3.5.1 (.NET CLR 3.5.30729)"
24.147.248.93 - - [19/Jul/2009:09:33:31 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 979061 "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.1) Gecko/20090715 Firefox/3.5.1 (.NET CLR 3.5.30729)"
24.147.248.93 - - [19/Jul/2009:09:33:38 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 416330 "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.1) Gecko/20090715 Firefox/3.5.1 (.NET CLR 3.5.30729)"
24.147.248.93 - - [19/Jul/2009:09:33:44 -0700] "GET /archives/2009/1-3/pdf/Hinduism-Today_Jan-Feb-Mar_2009.pdf HTTP/1.1" 206 175960 "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.1) Gecko/20090715 Firefox/3.5.1 (.NET CLR 3.5.30729)"

=========

Mahalo Nui Loa (I'm on Kauai- smile)





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Asked On
2009-08-07 at 21:55:44ID24636588
Tags

Apache Access Logs Get Requests 206 Partial content

Topic

Apache Web Server

Participating Experts
1
Points
500
Comments
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Answers

 

by: flob9Posted on 2009-08-08 at 02:16:00ID: 25048919

206 is a normal behaviour for pdf files.

If you open the pdf in your browser, it will download page 1, then, you can go page 14, it will download page 14, but not the entire file (depending of the pdf viewer).

 

by: SivakatirswamiPosted on 2009-08-08 at 15:25:10ID: 25052000

Thanks for clarifying that 206 is normal for PDF delivery. But this does not account for the

1) case where 80 lines of 206's appear in a session that lasts 1 min 20sec where the magazine PDF only contains 43 pages.

2) why is there a 200 at the beginning of such a session (and sometimes in the middle)

3) I also grepped the error logs and see no error for get requests for the target PDF, but we have a number of reports from users complaining "My browser hangs... the PDF never downloads.... I have to reboot Internet explorer."  where the windows/web/acrobat plugin integration is failing.Typically if x number of users report a problem it means x *10 at least are experiencing the problem. (90% never report in)

The above problem is a known issue. Search the net and see 100's of pages explaining to users to "Right click; choose 'Save link As.'" to solve the "Big PDF Never Downloads Problem"

Goal: analyze the logs; determine how many people failed to actually get the PDF.

I have a sinking feeling, it may not be possible. Some gremlins we just have to live with...

 

by: flob9Posted on 2009-08-08 at 16:54:56ID: 25052193

206 is a success http result code, as 200. I just means the client didnt request the entire resource. You cannot assume the pdf viewer will perform 1 http query per page. The client could be multithreaded, and perform multiple GET requests to get the needed pdf page.

If you're looking for errors in apache logs, skip 2xx codes. You can find redirects codes (3xx), errors (4xx), and internal errors (5xx), but 2xx is always success.

 

by: SivakatirswamiPosted on 2009-08-08 at 20:38:23ID: 25052703

Thank you for clarifying the nature of 206s. Understood: a byte range request need not be a single page as such, and you are quite right, most browsers will open a least 4 sockets if needed.

My grep on the error logs for the same 34 day period targetted the filename itself. There were only two errors (404's from two bad links on our own site to that file)

If one takes the 2xx codes at face value, one could assume that everyone got the files. But we have sufficient "anecdotal testimony" from users to know that is not true. Some number of them had their browsers/system hang on the attempt to get the file.

 I conclude from this that  Apache cannot know about the issue; its access logs cannot provide information as to who is experiencing the "Big PDF Doesn't Download" problem. It will have to remain as an unknown and pursuit of definitive data on the problem is a waste of time

Right?

 

by: flob9Posted on 2009-08-09 at 10:18:05ID: 25054930

Yes, your apache configuration seems correct. I managed to download the entire pdf on my browser, and i scrolled to last page while it was downloading without problems.

Big pdf files often hang the browser, you can provide an alternate link like "download the pdf" for slow connections users.

 

by: SivakatirswamiPosted on 2009-08-09 at 13:12:06ID: 25055734

Oh , great! Did you click on the link on our website? or did you construct an absolute URL from the log info?

What browser are you using?

This question remains unanswered  

Is there a way to know how many people have their browser hang, or not.

 

by: flob9Posted on 2009-08-09 at 14:56:54ID: 25056142

I clicked on the link in the logs with google chrome browser.

I tough there is no way to know about browsers getting stucked.

 

by: SivakatirswamiPosted on 2009-08-09 at 21:06:10ID: 25057111

Thanks flob9... I accepted our comment above clarifying 206's as a solution. Thanks for your patience. Take care


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