Its been a couple of weeks that some sites just keeps on hanging.
e.g.
Facebooks => static.ak.fbcdn.net
FLicker => l.yimg.com
GoogleAnalytics
I've googled and found many problems like this and some answers which are outdated or just doesn't solve the problem.
I did:
Cookies clearing, ran cc cleaner and several other nifty methods. None solved my problem??
Only with facebook, if I enter https:// manually instead of http:// on every url on facebook, it works and when it does the redirection to http://, everytime I have to type 's' on the address bar to make it https://
It is driving me nuts coz I'm developing Facebook App and this problem in being pain in my ass.
What might be the reason for these CDNs hanging behaviour??
Update: Mon Feb 8, 2010
Well when I viewed the source with firefox, this is the header part:
<link type="text/css" rel="stylesheet" href="http://b.static.ak.fbcdn.net/rsrc.php/zDO0B/hash/8jpbog60.css" />
<link type="text/css" rel="stylesheet" href="http://static.ak.fbcdn.net/rsrc.php/zA96O/hash/8jqnsh63.css" />
<link type="text/css" rel="stylesheet" href="http://b.static.ak.fbcdn.net/rsrc.php/z9X8U/hash/5zy5e7ns.css" />
<link type="text/css" rel="stylesheet" href="http://b.static.ak.fbcdn.net/rsrc.php/z7XWB/hash/b881ctjq.css" />
<link type="text/css" rel="stylesheet" href="http://static.ak.fbcdn.net/rsrc.php/zEMLE/hash/6n3druoq.css" />
<link type="text/css" rel="stylesheet" href="http://b.static.ak.fbcdn.net/rsrc.php/zEEQQ/hash/3et16vbl.css" />
<link type="text/css" rel="stylesheet" href="http://b.static.ak.fbcdn.net/rsrc.php/zF0BN/hash/4ey03a8b.css" />
#<link type="text/css" rel="stylesheet" href="http://b.static.ak.fbcdn.net/rsrc.php/zD46U/hash/4ctxkmr7.css" />
<script type="text/javascript" src="http://b.static.ak.fbcdn.net/rsrc.php/z5KPU/hash/f92tjc5l.js"></script>
When I clicked the each link, all links open with its contents except the last link with -# sign prefixed.
So the url -#http://b.static.ak.fbcdn.net/rsrc.php/zD46U/hash/4ctxkmr7.css is not opening and this css file is not downloaded and the facebook page looks horrible and all left aligned??
Update: Tue Feb 9, 2010
Today the link with the -# sign is just keeps hanging and looping:
<link type="text/css" rel="stylesheet" href="http://static.ak.fbcdn.net/rsrc.php/zEMLE/hash/6n3druoq.css" />
<link type="text/css" rel="stylesheet" href="http://b.static.ak.fbcdn.net/rsrc.php/z9X8U/hash/5zy5e7ns.css" />
<link type="text/css" rel="stylesheet" href="http://b.static.ak.fbcdn.net/rsrc.php/zF0BN/hash/4ey03a8b.css" />
<link type="text/css" rel="stylesheet" href="http://static.ak.fbcdn.net/rsrc.php/z1580/hash/4l5utauj.css" />
#<link type="text/css" rel="stylesheet" href="http://b.static.ak.fbcdn.net/rsrc.php/z4851/hash/532htj7z.css" />
<link type="text/css" rel="stylesheet" href="http://static.ak.fbcdn.net/rsrc.php/z1GEW/hash/dh01t0zv.css" />
<link type="text/css" rel="stylesheet" href="http://static.ak.fbcdn.net/rsrc.php/z80UK/hash/3a6o59ih.css" />
<link type="text/css" rel="stylesheet" href="http://b.static.ak.fbcdn.net/rsrc.php/zD46U/hash/4ctxkmr7.css" />
<script type="text/javascript" src="http://b.static.ak.fbcdn.net/rsrc.php/z5KPU/hash/f92tjc5l.js"></script>
Why that url http://b.static.ak.fbcdn.net acting weird? Has something Akamai got to do with this?
It could be some kind of connectivity issue between you and the CDNs. Blocking them with adblock (or the hosts file) is an effective way forward, or there's a Firefox extension for it - Ghostery.
This could also be an issue with your ISP. I have seen cases in which certain domains take arduous amounts of time to access or, in some cases, cannot be accessed at all during peak hours. It could be possible that the domains you're having issues with are ones that your ISP is having problems with. In the past I've experienced outages of Google as well as one or tow subdomains.
Do you have the same problem from different computers on the same network?
I also have the same problem. I've not resolved the issue completely but I found a hack fix:
Set the CDN domains to fixed IP numbers in your local computer's hosts file.
I added these lines to my WinXP c:\windows\system32\drivers\etc\hosts
Other OS's have a similar file(Linux: /etc/hosts)
# CDN networks broken for Yahoo, Google and Facebook
217.212.252.78 static.ak.fbcdn.net
217.212.252.78 profile.ak.fbcdn.net
217.212.252.78 external.ak.fbcdn.net
217.212.252.78 creative.ak.fbcdn.net
217.212.252.78 platform.ak.fbcdn.net
217.212.252.78 l.yimg.com
To choose the fastest IPs for your location visit just-ping.com .
I've not tried it but this trick might also work for Windows users:
http://www.updatexp.com/dns-windows-xp.html
I observed this same issue on several computers on our home LAN over a prolonged period and after many months, finally found a fix. It turned out that the intrusion detection rules in my Billion ADSL router were overly aggressive in blocking sites. This discussion thread revealed the issue and solution for my case.
http://forums.whirlpool.net.au/archive/1622370
You may find that your router has similar issues or that your firewall performs a similar intrusion detection function that needs tuning.
If you have a similar router or firewall feature, you can test if this is the case by clearing the 'intrusion detection' blacklist when you observe the blocking problem to see if it unblocks the site.
If you have a Billion modem/router, I'd also recommend updating to the latest firmware that now includes the ability to add white list IPs that will permanently prevent IP blocking. This may or may not be helpful for CDN sites like Facebook that use large server farms (= numerous IPs per domain name). What I think Billion need to do here is support domain name white listing rather than just IP white listing so that the router determines which IP you've been allocated for this domain.
Related
My team are now developing a vue-cli based webapp that aims to works on Safari(iOS) and Chrome(android).
The favicon show normally on chrome but not showing in safari, or showing on some pages but not in some page.
I've figuring on this issue for like two weeks.
I tried to force refresh the favicon by ./favicon?v=2, or use full url path or relative path, or use several different way to write favicon, but nothing works.
Sometimes the favicon just show for a second and a disappear.
Some pages say the safari iphone can be heavily cached but i can't find a good way to clean the cache.
I use vue-cli so the below link tag is written in public/index.html like below, and the favicon in public/favicon.ico.
<link rel="icon" href="<%= BASE_URL %>favicon.ico">
after build, above code become code like
<link rel="icon" href="https://www.mysitesite.com/favicon.ico">
chrome android or chrome pc show normally but not safari ios
I also tried some code like below but don't work.
<link rel="icon" href="https://www.mysitesite.com/favicon.ico?v=2" />
<link rel="icon" href="https://www.mysitesite.com/favicon.png?v=2" />
<link rel="icon" href="./favicon.ico?v=2" />
<link rel="icon" href="./favicon.ico?v=2" />
also, I tried generate favicon path by html-webpack-plugin but not show in safari.
apple-touch-icon shows when i bookmarked but favicon didn't show on the safari tab.
<link rel="apple-touch-icon" sizes="180x180" href="./apple-touch-icon-180x180.png">
Does anybody knows the solution or is this just a bug in safari?
Thank you so much.
The performance report in Google Lighthouse made the following recommendation:
Avoid multiple, costly round trips to any origin
"Avoid multiple, costly round trips to any origin"...It then proceeds to list 8 origins.
So, I added the following code to the top of the <head> section of my site, where the hrefs correspond to each origin.
<link rel='preconnect' href='https://connect.facebook.net' />
<link rel='preconnect' href='https://img.secureserver.net' />
<link rel='preconnect' href='https://advertise.bingads.microsoft.com' />
<link rel='preconnect' href='https://advertiseonbing.blob.core.windows.net' />
<link rel='preconnect' href='https://www.gstatic.com' />
<link rel='preconnect' href='https://js.calltrk.com' />
<link rel='preconnect' href='https://px.ads.linkedin.com' />
<link rel='preconnect' href='https://www.facebook.com' />
<link rel='preconnect' href='https://accounts.google.com' />
I also tried them with <link rel='dns-prefetch' /> and some combination of that and other browser hints.
However, nothing changed in the Lighthouse reports after running it again some time later. Could someone steer me in the right direction so I can resolve that issue in Lighthouse and get one step closer to having a perfect report?!
Edit: I have a guess for why doing this might not make a difference in the Lighthouse Report, and it's that the resources are called in the document before the preconnect has even finished. So even though it technically starts a little sooner and saves some ms, the rest of the document is so small and it requests those resources before the prefetch or preconnect is even completed. Sound logical?
I've had a problem with Facebook.com for a few days now. Every time I load the website # https://www.facebook.com it will just take a few seconds and then display a white page. The source of the page is this:
<!DOCTYPE html>
<html lang="en" id="facebook" class="no_js">
<head><meta charset="utf-8" /><script>function envFlush(a){function b(c){for(var d in a)c[d]=a[d];}if(window.requireLazy){window.requireLazy(['Env'],b);}else{window.Env=window.Env||{};b(window.Env);}}envFlush({"ajaxpipe_token":"AXgRWhMTFIL_juHq","lhsh":"KAQF0BXye","khsh":"0`sj`e`rm`s-0fdu^gshdoer-0gc^eurf-3gc^eurf;1;enbtldou;fduDmdldourCxO`ld-2YLMIuuqSdptdru;qsnunuxqd;rdoe-0unjdojnx0"});</script><script>CavalryLogger=false;</script><noscript><meta http-equiv="refresh" content="0; URL=/?_fb_noscript=1" /></noscript><meta name="referrer" content="origin-when-crossorigin" id="meta_referrer" /><link type="text/css" rel="stylesheet" href="https://static.xx.fbcdn.net/rsrc.php/v2/yf/r/rTRM3thxxyG.css" data-bootloader-hash="nVu0I" data-permanent="1" crossorigin="anonymous" />
<link type="text/css" rel="stylesheet" href="https://static.xx.fbcdn.net/rsrc.php/v2/yX/r/h3ydpK_uuri.css" data-bootloader-hash="zp4CG" data-permanent="1" crossorigin="anonymous" />
<link type="text/css" rel="stylesheet" href="https://static.xx.fbcdn.net/rsrc.php/v2/ym/r/T7fKvPc0GuV.css" data-bootloader-hash="2S8io" data-permanent="1" crossorigin="anonymous" />
<link type="text/css" rel="stylesheet" href="https://static.xx.fbcdn.net/rsrc.php/v2/yu/r/Ld1C_Jcgl5j.css" data-bootloader-hash="/JEly" data-permanent="1" crossorigin="anonymous" />
<script src="https://static.xx.fbcdn.net/rsrc.php/v2/yW/r/m6m6Y7RpsEs.js" data-bootloader-hash="5WJdo" crossorigin="anonymous"></script>
<script>require("TimeSlice").guard(function() {(require("ServerJSDefine")).handleDefines([["CSSLoaderConfig",[],{"timeout":5000,"loadEventSupported":true},619]]);new (require("ServerJS"))().handle({"require":[["Bootloader","loadEarlyResources",[],[{"RmDcU":{"type":"js","src":"https:\/\/static.xx.fbcdn.net\/rsrc.php\/v2\/yL\/r\/uKsBDyzJwJh.js","crossOrigin":1},"5zC\/8":{"type":"js","src":"https:\/\/static.xx.fbcdn.net\/rsrc.php\/v2\/y0\/r\/64jGxSfxJ36.js","crossOrigin":1},"pFHnJ":{"type":"js","src":"https:\/\/static.xx.fbcdn.net\/rsrc.php\/v2\/yp\/r\/K6ojr4ngQRr.js","crossOrigin":1},"P0eje":{"type":"js","src":"https:\/\/static.xx.fbcdn.net\/rsrc.php\/v2\/y2\/r\/Wn1AFwUyuPt.js","crossOrigin":1},"q\/AOh":{"type":"js","src":"https:\/\/static.xx.fbcdn.net\/rsrc.php\/v2\/yn\/r\/r40PYeaPQsy.js","crossOrigin":1}}]]]});}, "ServerJS define", {"root":true})();</script>
I tried deleting all cookies, history, empty cache etc. and that allowed me to get to the login screen. When I login using my account it gives me the white screen, however I created a dummy account for this problem and logged in using a new account, completely fresh and it worked fine...
Not too sure what's going on here since it seems to be account specific, and it's not like I've misused the site... Anyone have any insight into this?
Or just answer the question with a fix and be a little more human and compassionate. The fix by the way is simple - create a business FB profile at business.facebook.com, using the same email address as the affected FB account. Once in on that, change views to your personal profile and your account should be back working normally.
You will need to submit the code to Facebook as its an issue accessing their server. That's a timeout, try logging in with a VPN set from a different area. Sometimes going from Instagram to Facebook cross-platform will cause a similar issue is an authentication token isn't given in a timely manner.
If that doesn't work report the code to Facebook so they can fix the timeout error.
I'm working on my very first (very lame) website, so apologies for the n00b question.
In Chrome/FF/Safari, my site renders the CSS fine. But on my iPhone or iPad (Chrome or Safari), my site renders as if there were no CSS styles at all. What's the cause?
Link to site
Thanks in advance!
you are referencing localhost for your stylesheet
<link rel="stylesheet" href="http://localhost:8888/kirbydev/assets/styles/styles.css" />
needs to be
<link rel="stylesheet" href="http://www.tvsonsale.co.uk/kirbydev/assets/styles/styles.css" />
or relative path so it works on local dev and production:
<link rel="stylesheet" href="/kirbydev/assets/styles/styles.css" />
If I specify different image sizes for favicon PNGs like so:
<link rel="icon" type="image/png" sizes="16x16" href="/favicon.png" />
<link rel="icon" type="image/png" sizes="24x24" href="/favicon-24px.png" />
<link rel="icon" type="image/png" sizes="32x32" href="/favicon-32px.png" />
<link rel="icon" type="image/png" sizes="48x48" href="/favicon-48px.png" />
<link rel="icon" type="image/png" sizes="64x64" href="/favicon-64px.png" />
<link rel="icon" type="image/png" sizes="256x256" href="/favicon-256px.png" />
<link rel="icon" type="image/png" sizes="512x512" href="/favicon-512px.png" />
<link rel="shortcut icon" type="image/x-icon" href="/favicon.ico" />
Does every one of these files get fetched?
Quoting from http://www.jonathantneal.com/blog/understand-the-favicon/:
How do these PNG-favicon-compatible browsers determine which favicon
should be used? Firefox and Safari will use the favicon that comes
last. Chrome for Mac will use whichever favicon is ICO formatted,
otherwise the 32×32 favicon. Chrome for Windows will use the favicon
that comes first if it is 16×16, otherwise the ICO. If none of the
aforementioned options are available, both Chromes will use whichever
favicon comes first, exactly the opposite of Firefox and Safari.
Indeed, Chrome for Mac will ignore the 16×16 favicon and use the 32×32
version if only to scale it back down to 16×16 on non-retina devices.
Opera, not wanting to take sides, will choose from any of the
available icons at complete random. I love that Opera does this.
And that’s just the beginning. Now it’s time to learn about the
Internet Explorer caveats.
While IE8-10 will display
the favicon on first load of the page, IE7 will skip the first load
and display the favicon during repeat visits. Worse yet, IE6 will only
display the favicon once the site has been bookmarked and reopened in
the browser. IE6 will also drop the favicon whenever the browser cache
is cleared, and it will not display the favicon again until the site
is either re-bookmarked, or the favicon is somehow reloaded. If IE6
and favicons mean a lot to you, you can force this reload with a
little JavaScript snippet, preferably wrapped in a conditional
comment.
<!-- I "support" IE6 -->
<!--[if IE 6]><script>(new Image).src="path/to/favicon.ico"</script><![endif]-->
According to the specification, the most appropriate icon will be used. So there is no a need to fetch something that has no use.
If multiple icons are provided, the user agent must select the most appropriate icon according to the type, media, and sizes attributes.
Surprisingly, I observed that some browsers are loading all PNG favicons, not only the most suitable one:
Chrome on Windows
Chrome on Android
Firefox on Windows
I didn't tested other settings, like Firefox on Android.
More about the "all favicons are loaded" issue.
The browser will get only one file, if any.