It seems that the referrer on the following log is a folder.
112.200.208.5 - - [29/Jul/2013:20:43:14 +0800] "GET /sites/default/files/download/argie/pos-code.zip HTTP/1.1" 206 294677 "http://www.mysite.com/sites/default/files/download/argie/" "Mozilla/5.0 (Windows NT 6.2; rv:22.0) Gecko/20100101 Firefox/22.0"
61.3.158.113 - - [29/Jul/2013:20:43:14 +0800] "GET /sites/default/files/download/lnosKHEN/payroll_system_-_lnoskhen_0.zip HTTP/1.1" 206 10806 "http://www.mysite.com/download-code" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/534.3 (KHTML, like Gecko) Chrome/6.0.472.25 Safari/534.3"
112.200.208.5 - - [29/Jul/2013:20:43:15 +0800] "GET /sites/default/files/download/argie/pos-code.zip HTTP/1.1" 206 21465 "http://www.mysite.com/sites/default/files/download/argie/" "Mozilla/5.0 (Windows NT 6.2; rv:22.0) Gecko/20100101 Firefox/22.0"
112.200.208.5 - - [29/Jul/2013:20:43:16 +0800] "GET /sites/default/files/download/argie/pos-code.zip HTTP/1.1" 206 469304 "http://www.mysite.com/sites/default/files/download/argie/" "Mozilla/5.0 (Windows NT 6.2; rv:22.0) Gecko/20100101 Firefox/22.0"
112.200.208.5 - - [29/Jul/2013:20:43:17 +0800] "GET /sites/default/files/download/argie/pos-code.zip HTTP/1.1" 206 238639 "http://www.mysite.com/sites/default/files/download/argie/" "Mozilla/5.0 (Windows NT 6.2; rv:22.0) Gecko/20100101 Firefox/22.0"
112.200.208.5 - - [29/Jul/2013:20:43:18 +0800] "GET /sites/default/files/download/argie/pos-code.zip HTTP/1.1" 206 267724 "http://www.mysite.com/sites/default/files/download/argie/" "Mozilla/5.0 (Windows NT 6.2; rv:22.0) Gecko/20100101 Firefox/22.0"
39.41.211.234 - - [29/Jul/2013:20:43:22 +0800] "GET /sites/default/files/download/john.lemar/zest-project.zip HTTP/1.1" 206 23361 "http://www.mysite.com/sites/default/files/download/john.lemar/" "Mozilla/5.0 (Windows NT 5.1; rv:15.0) Gecko/20100101 Firefox/15.0.1"
39.41.211.234 - - [29/Jul/2013:20:43:23 +0800] "GET /sites/default/files/download/john.lemar/zest-project.zip HTTP/1.1" 200 632601 "http://www.mysite.com/sites/default/files/download/john.lemar/" "Mozilla/5.0 (Windows NT 5.1; rv:15.0) Gecko/20100101 Firefox/15.0.1"
39.41.211.234 - - [29/Jul/2013:20:43:24 +0800] "GET /sites/default/files/download/john.lemar/zest-project.zip HTTP/1.1" 206 285171 "http://www.mysite.com/sites/default/files/download/john.lemar/" "Mozilla/5.0 (Windows NT 5.1; rv:15.0) Gecko/20100101 Firefox/15.0.1"
39.41.211.234 - - [29/Jul/2013:20:43:24 +0800] "GET /sites/default/files/download/john.lemar/zest-project.zip HTTP/1.1" 206 138366 "http://www.mysite.com/sites/default/files/download/john.lemar/" "Mozilla/5.0 (Windows NT 5.1; rv:15.0) Gecko/20100101 Firefox/15.0.1"
39.41.211.234 - - [29/Jul/2013:20:43:25 +0800] "GET /sites/default/files/download/john.lemar/zest-project.zip HTTP/1.1" 206 104108 "http://www.mysite.com/sites/default/files/download/john.lemar/" "Mozilla/5.0 (Windows NT 5.1; rv:15.0) Gecko/20100101 Firefox/15.0.1"
39.41.211.234 - - [29/Jul/2013:20:43:25 +0800] "GET /sites/default/files/download/john.lemar/zest-project.zip HTTP/1.1" 206 52055 "http://www.mysite.com/sites/default/files/download/john.lemar/" "Mozilla/5.0 (Windows NT 5.1; rv:15.0) Gecko/20100101 Firefox/15.0.1"
39.41.211.234 - - [29/Jul/2013:20:43:25 +0800] "GET /sites/default/files/download/john.lemar/zest-project.zip HTTP/1.1" 206 63038 "http://www.mysite.com/sites/default/files/download/john.lemar/" "Mozilla/5.0 (Windows NT 5.1; rv:15.0) Gecko/20100101 Firefox/15.0.1"
39.41.211.234 - - [29/Jul/2013:20:43:27 +0800] "GET /sites/default/files/download/john.lemar/zest-project.zip HTTP/1.1" 206 32452 "http://www.mysite.com/sites/default/files/download/john.lemar/" "Mozilla/5.0 (Windows NT 5.1; rv:15.0) Gecko/20100101 Firefox/15.0.1"
112.200.208.5 - - [29/Jul/2013:20:43:33 +0800] "GET /sites/default/files/download/argie/pos-code.zip HTTP/1.1" 206 215059 "http://www.mysite.com/sites/default/files/download/argie/" "Mozilla/5.0 (Windows NT 6.2; rv:22.0) Gecko/20100101 Firefox/22.0"
As I believe, the only valid download is this line is:
61.3.158.113 - - [29/Jul/2013:20:43:14 +0800] "GET /sites/default/files/download/lnosKHEN/payroll_system_-_lnoskhen_0.zip HTTP/1.1" 206 10806 "http://www.mysite.com/download-code" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US)
Because I set all download to be coming from this URL:
http://www.mysite.com/download-code
So, how come the referrer seems to come from a folder?
Just like this line:
112.200.208.5 - - [29/Jul/2013:20:43:33 +0800] "GET /sites/default/files/download/argie/pos-code.zip HTTP/1.1" 206 215059 "http://www.mysite.com/sites/default/files/download/argie/" "Mozilla/5.0 (Windows NT 6.2; rv:22.0) Gecko/20100101 Firefox/22.0"
The refferer is:
http://www.mysite.com/sites/default/files/download/argie/
This line:
/sites/default/files/download/argie/
is a folder.
Even if this is a web crawler, is it possible that it can access the folder on my site?
When I manually type the following:
http://www.mysite.com/sites/default/files/download/argie/
It will simply return a "Page not found". That's why I'm wondering how it becomes the referrer.
BTW, I'm using nginx.