A few months back Mark Mandel wrote me about an odd issue he was having with RIAForge. Every time he tried to visit the site he got an empty page. Not a ColdFusion error, but an empty page. I wasn't aware of any possible thing it could be, so I wasn't able to do anything. A few weeks back I got another email from a user who was in a similar situation. This user was also outside America (although in Switzerland, a bit far away from Australia) so I began to think it may be some kind of network security system at the host level. I checked with the host - but they said nothing like that was in place.
To make things even more interesting - it isn't just a RIAForge issue. Any CFM file on the box (CFInsider is there as well as the ColdFusion Portal) is blocked for Mark. Yet a non-CFM file loads!
So the question is - why would CFM files be blocked for a very small minority of users? Any clues? I'm tempted to go ahead and update to ColdFusion 9 today just to see what happens.
Comment 1 written by Cyril Hanquez on 27 November 2009, at 8:35 AM
Comment 2 written by Ed Tabara on 27 November 2009, at 8:39 AM
Comment 3 written by nic on 27 November 2009, at 8:45 AM
As long as the problem isn't solved maybe mark can use an american proxy?
Comment 4 written by Cyril Hanquez on 27 November 2009, at 8:45 AM
Comment 5 written by Gary Gilbert on 27 November 2009, at 8:51 AM
Comment 6 written by Seb on 27 November 2009, at 9:02 AM
Do they use a proxy ?
Using a web proxy (like https://proxify.co.uk/ ), does it work ?
It could be something like a content filtering/network restriction.
Comment 7 written by Milo on 27 November 2009, at 9:06 AM
Comment 8 written by Matthew Fabb on 27 November 2009, at 9:10 AM
Comment 9 written by Andrew on 27 November 2009, at 9:11 AM
Comment 10 written by Mihai on 27 November 2009, at 9:11 AM
Comment 11 written by George Bridgeman on 27 November 2009, at 9:14 AM
Check all the log files and see if anything weird pops up when Mark visits the site.
George.
Comment 12 written by Amer Ghalayini on 27 November 2009, at 9:14 AM
Comment 13 written by Raymond Camden on 27 November 2009, at 9:24 AM
Comment 14 written by Apostolos Tsakpinis on 27 November 2009, at 10:11 AM
Comment 15 written by Luke on 27 November 2009, at 10:26 AM
ps - good to see so many CFers from all over the planet :-)
Comment 16 written by Steini Jónsson on 27 November 2009, at 10:49 AM
Comment 17 written by Alan McCollough on 27 November 2009, at 11:27 AM
Comment 18 written by Raymond Camden on 27 November 2009, at 11:32 AM
Comment 19 written by Richard McKenna on 27 November 2009, at 12:33 PM
Comment 20 written by johans on 27 November 2009, at 12:47 PM
Comment 21 written by Gunnar on 27 November 2009, at 12:59 PM
Comment 22 written by ciprian todea on 27 November 2009, at 2:12 PM
Comment 23 written by Azadi Saryev on 27 November 2009, at 9:38 PM
i also suspect it is a local isp proxy issue...
Azadi
Comment 24 written by Dmitry Yakhnov on 28 November 2009, at 7:49 AM
I think it might be: (1) some sort of local ISP problem or (2) RIAForge can have some problems with high load of server.
Comment 25 written by Syed on 28 November 2009, at 4:04 PM
Comment 26 written by dheath on 28 November 2009, at 6:57 PM
Comment 27 written by Prasanth Kumar.S on 28 November 2009, at 8:57 PM
Comment 28 written by fanturi on 29 November 2009, at 4:37 AM
No blank page the page can't load at all.
But I work at luxembourg and it works fine.
Comment 29 written by Bilgehan on 29 November 2009, at 5:29 AM
Comment 30 written by Raymond Camden on 29 November 2009, at 7:57 AM
Comment 31 written by Raymond Camden on 29 November 2009, at 9:02 AM
Comment 32 written by Terry on 29 November 2009, at 6:08 PM
Comment 33 written by shakti on 29 November 2009, at 8:56 PM
Comment 34 written by Vadim on 30 November 2009, at 2:41 AM
so far I don't have any probs accessing RIAForge from Russia (tried from home and from the office).
So I'd say it looks like DNS/ISP problem.
Best wishes from RU.
Comment 35 written by Bjorn Jensen on 30 November 2009, at 3:08 AM
Comment 36 written by Daniel Harvey on 30 November 2009, at 8:41 AM
Comment 37 written by Raymond Camden on 30 November 2009, at 8:46 AM
Comment 38 written by Daniel Harvey on 30 November 2009, at 8:48 AM
Comment 39 written by Raymond Camden on 30 November 2009, at 8:52 AM
Comment 40 written by Daniel Harvey on 30 November 2009, at 8:54 AM
Comment 41 written by Raymond Camden on 30 November 2009, at 8:55 AM
Comment 42 written by Daniel Harvey on 30 November 2009, at 8:58 AM
Comment 43 written by Daniel Harvey on 30 November 2009, at 9:05 AM
Comment 44 written by Raymond Camden on 30 November 2009, at 9:08 AM
Comment 45 written by Daniel Harvey on 30 November 2009, at 9:15 AM
It is a network issue between the server and the user.
The server isn't sending the page correctly.
The idea that they are getting a response seems to indicate the server is receiving their request. And that the packet doesn't include html means it is not a problem with the computer or browser handling/rendering the page.
My next step would be to see if you could have the host capture packets(if you haven't already) while they are trying to access the site and look at the request packet and the reply packet. This should help narrow it down to one of the two causes.
Hope I am helping at least a little
Comment 46 written by Raymond Camden on 30 November 2009, at 9:53 AM
To make things more interesting, Nando can't hit RIAForge via his Mac at home. He brings the Mac to work, and it works. Both his work and his home uses the same network provider.
Comment 47 written by Daniel Harvey on 30 November 2009, at 9:59 AM
Comment 48 written by Nando on 30 November 2009, at 3:36 PM
And yes, I can view other CFML sites from the Mac. This post is proof.
Comment 49 written by Apostolos Tsakpinis on 30 November 2009, at 4:31 PM
Comment 50 written by Marcel on 30 November 2009, at 7:20 PM
Given you can access html and gif files, I would suggest you try making a html file really big and see if it suddenly also causes issues. Then you can bet on MTU as the culprit. Caused us weeks of outage before someone figured it out. It isn't ordinary for MTU to cause problems but if there are tunnels in the network access at any point sometimes it just messes things up.
Comment 51 written by Nando on 1 December 2009, at 12:26 AM
Comment 52 written by Marcel on 1 December 2009, at 12:32 AM
Comment 53 written by Raige on 1 December 2009, at 10:19 AM
Also, when the page executes (but shows up blank) do a view source. Is anything there?
It almost sounds like some filtering software is preventing content being delivered for .cfm files. Man in the middle kind of thing you might expect for software that monitors network traffic in a business that displays "This site is a xxx site" instead of allowing users to view it.
I could be way off.
Comment 54 written by Nando on 1 December 2009, at 10:44 AM
1 (192.168.2.1) 14.326 ms 1.921 ms 1.732 ms
2 bwacadf2zhh.bluewin.ch (195.186.253.133) 14.960 ms 15.103 ms 16.191 ms
3 net254.bwrtadf1zhh.bluewin.ch (213.3.254.129) 14.505 ms 14.826 ms 19.088 ms
4 177-254-3-213.bluewin.ch (213.3.254.177) 20.916 ms 14.839 ms 14.498 ms
5 net319.bwrt1zhh.bluewin.ch (195.186.122.233) 14.594 ms 15.113 ms 15.155 ms
6 po20.zhhdz09p-rtdi01.bluewin.ch (195.186.0.225) 14.677 ms 15.442 ms 21.695 ms
7 if250.ip-plus.bluewin.ch (195.186.0.250) 15.277 ms 15.660 ms 15.736 ms
8 i79zhb-015-por15.bb.ip-plus.net (138.187.129.102) 15.700 ms 14.856 ms 15.946 ms
9 i00ffm-015-por11.bb.ip-plus.net (138.187.129.107) 22.009 ms 24.845 ms 24.458 ms
10 cr02.frf02.pccwbtn.net (80.81.192.50) 140.273 ms 87.171 ms 155.442 ms
11 wbs.ge9-5.br02.ash01.pccwbtn.net (63.218.92.6) 113.001 ms 112.357 ms 112.865 ms
12 core1-ten-2-1.nwrk1.hostmysite.net (67.59.145.33) 116.699 ms 116.523 ms 116.275 ms
13 ded2.dc3.hostmysite.net (67.59.145.10) 114.222 ms 129.941 ms 124.410 ms
14 www.riaforge.org (76.12.137.164) 116.278 ms 116.574 ms 125.292 ms
Traceroute from "crippled" connection at my home office:
1 192.168.1.1 (192.168.1.1) 6.666 ms 2.044 ms 1.061 ms
2 1-0.78-83.cust.bluewin.ch (83.78.0.1) 10.426 ms 10.954 ms 10.574 ms
3 193-251-3-213.bluewin.ch (213.3.251.193) 10.418 ms 10.606 ms 10.197 ms
4 181-247-3-213.bluewin.ch (213.3.247.181) 11.036 ms 10.636 ms 11.051 ms
5 126-0-186-195.bluewin.ch (195.186.0.126) 11.692 ms 11.021 ms 10.816 ms
6 i79zhb-015-vla200.bb.ip-plus.net (138.187.129.62) 11.866 ms 11.757 ms 10.805 ms
7 i00ffm-015-por11.bb.ip-plus.net (138.187.129.107) 17.982 ms 17.629 ms 17.264 ms
8 cr02.frf02.pccwbtn.net (80.81.192.50) 25.381 ms 104.139 ms 129.272 ms
9 wbs.ge9-5.br02.ash01.pccwbtn.net (63.218.92.6) 109.774 ms 109.323 ms 109.457 ms
10 core1-ten-2-1.nwrk1.hostmysite.net (67.59.145.33) 111.868 ms 111.248 ms 112.372 ms
11 ded1.dc3.hostmysite.net (67.59.145.12) 113.271 ms 113.653 ms 111.874 ms
12 riaforge.org (76.12.137.164) 112.358 ms 112.611 ms 112.069 ms
Effectively, there is nothing to look at view source wise, because the effort to retrieve content by the browser "hangs", similar to when a site is loading but hasn't loaded yet - just that the "yet" part never happens.
Comment 55 written by Daniel Harvey on 1 December 2009, at 11:01 AM
Comment 56 written by Apostolos Tsakpinis on 1 December 2009, at 11:08 AM
http://www.zdimensions.gr/apostolos/riaforge-trace...
Comment 57 written by Daniel Harvey on 2 December 2009, at 6:25 AM
I have a feeling it has to do with some of the security settings on the MacOS that is bypassed when using a proxy and virtual machine
Comment 58 written by Daniel Harvey on 2 December 2009, at 6:30 AM
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