I have an issue on a Wordpress website in which the Google Maps doesn't load on Firefox and Safari specifically. The map shows blank and a message Loading map...that never ends on those 2 browsers.
This curious message in yellow is displayed on the browser on Google Chrome:
jquery.min.js?ver=1.11.1:4 Cross-Origin Read Blocking (CORB) blocked cross-origin response https://github.com/googlemaps/js-map-label/blob/gh-pages/src/maplabel.js?_=XXXXXXXXXX with MIME type text/html. See https://www.chromestatus.com/feature/5629709824032768 for more details.
and in Firefox it displays the following message also as a yellow alert:
Loading failed for the <script> with source “https://github.com/googlemaps/js-map-label/blob/gh-pages/src/maplabel.js?_=XXXXXXXXX”.
Any clue on what it only works in Chrome and not in Firefox and Safari? Any clue how to solve it?
Thank you
As from the error, your CSP (Content Security Policy) does not allow you to load scripts from github.com domain.
You can :
Edit your content-security-policy headers to allow https://github.com loading. You can do it from your Apache/Nginx settings, or from PHP (if you use it) but I prefer handling those headers from web-server config.
CSP can also be managed using header meta tag
As you're directly serving from Github, you may need to change the default-src as content-type is text/html. I don't know if the script-src will handle it.
Download and upload the script to your server. Like this, it'll be loaded from the same domain, and should not throw CSP error.
Also:
Using files directly from GitHub is not the best idea. As you can see here and from your console error with MIME type text/html, Github serve your JS file as text/html instead of application/javascript.
It would be better to use a proper CDN (if a CDN serving your file exist), or store the file on your server.
Related
I have an iFrame which I only wanted to be embeddable on a specific website. For this I found the the following code
Header set Content-Security-Policy: "frame-ancestors https://..."
I put this code into my .htaccess file and it worked perfectly when testing it on my laptop. But when I access the specific URL where the iFrame should be allowed to be embedded with my smartphone (Android + iOS), it's blocked. I searched some time on Google but couldn't find a hint or way to change this.
Hope you can help me out on this.
Edit:
I searched through the net and tested a lot of stuff but nothing works. My .htaccess looks like this:
Header set Content-Security-Policy: "frame-ancestors domain1 domain2/embed.php?id=1;"
domain2/embed.php?id=1 includes the videosource which I want to embed on another website. When calling this domain the video is ready to go in my browser. When I check the console on MAC (this seems to be a Safari problem) I get the following error message:
The source list for Content Security Policy directive 'frame-ancestors' contains a source with invalid path: '/embed.php?id=1'. The query component, including the "?" will be ignored.
Refused to load domain2/embed.php?id=1 because it does not appear in the frame-ancestors directive of the Content Security Policy.
When inserting https://domain2 or domain2 in the frame-ancestors line nothing changes, the video is still not available in Safari. I read that I have to insert the link in the error message to the frame-ancestors but then the ? will be ignored and the video can't be displayed.
There must be someone who has a suggestion to this problem or?
I have installed an SSL-certificate for my website but it is not working for some pages. I went inside of the Google Chrome Console option and found this error message:
Mixed Content: The page at
'https://www.feelhome.se/produkt/blackgrey-feather/' was loaded over
HTTPS, but requested an insecure font
'http://www.feelhome.se/wp-content/plugins/ajax-search-pro/css/fonts/icons/icons.woff'.
This request has been blocked; the content must be served over HTTPS.
I went inside of the "insecure font" but there is not "http" URL there that I can change to remove this error message. How can I remove this error message that appears?
You need to change the reference to the font in your CSS file so that it uses a https:// URL.
All external resources (css, javascript, images, etc) imported into the page need to either be relative URL so that they automatically use the same protocol, or you need to explicitly use https:// in their URL.
I have problem with tinymce 4.1.10. Icons are not shown in it, then i put it in page, that is loaded through https. Problem is that font files are loaded through http and browser writes in console:
Mixed Content: ... was loaded over HTTPS, but requested an insecure
font '...tinymce.woff'. This request has been blocked; the content
must be served over HTTPS.
Css file with reference to tinymce.woff tinymce/skins/lightgray/skin.min.css is loaded through https. It contains relative link to the font file.
I tried to test how it is loaded in tinymce site: https://www.tinymce.com/tryit/basic.php And it works here! Font file tinymce.woff is loaded though https. Files skin.min.css are identical in tinymce.com and in my server and both loaded by https, but why font file tinymce.woff is loaded through http on my site (and through https in tinymce site)?
What makes browser (i tested in FF and Chrome) to decide to use http or https?
PS. I read similar questions here and played with http headers, but it didn't help.
Finally i found solution. Problem was in .htaccess file in my server, that redirected some https calls to http. Thank you all, who read this and tried to answer :)
I thought I have somehow found a solution to the very vexing problem with Firefox and CDN-hosted fonts access, but here comes IE9.
I recently found a very frustrating issue with IE9 caching problem, and chanced upon this blog post (IE9 Redirect Caching Nightmare) which enlightened me more about the actual issue.
I have to admit that I'm not sure whether the above mentioned is actually the issue, but it seems close enough.
Problem:
I have a website set up with 2 domains(base domain and subdomain) pointing to the same server, serving the exact same website which is using a same set of resources from a CDN hosted on Amazon S3, served by Cloudfront.
https://example.com
https://www.example.com
I get these kind of error messages in my IE9 developer tools console when loading fonts from my CSS file using #font-face:
CSS3117: #font-face failed cross-origin request. Resource access is restricted.
This happens when I loaded either of the URL first, then visiting the other second. IE9 is not running in Compatibility Mode. It running is in Document Mode: IE9 Standards.
From my limited understanding of the CORS and the need to set Access-Control-Allow-Origin HTTP header, I have dutifully set it up in S3 CORS policy, and it works perfectly fine with Firefox.
Requests from both domains, will get their respective header when requesting the CDN resource.
It seems that IE9 tried to do some optimization with caching, and cached the redirect too.
This causes a problem as the Access-Control-Allow-Origin header is cached as well. Without sending a request to the CDN server, the Access-Control-Allow-Origin header cannot change for different domains.
So I'm left with a situation where the request is from https://www.example.com and yet the Access-Control-Allow-Origin is https://example.com. This leads to the restricted resource problem with the error message above.
Further look: I did a check with Firefox 19, the above situation actually occurs, but it does not encounter the same strict restriction as IE9. Subdomain (https://www.example.com) requesting information will accept the access-control-allow-origin of the main domain(https://example.com). Chrome (Webkit) doesn't seem to care. I'm at a loss about which browser's behaviour implementation is correct.
With my current settings in the CDN, it seems like Chrome and Firefox, automatically reroutes allwww subdomain requests to the main domain. Only upon multiple attempts of inputing the www subdomain in the address bar, then will Chrome and Firefox obey. IE9 on the other hand, just goes to whichever address is typed in the address bar. IE9 seems to be the odd one out here, but I'm not sure which browser's behaviour is actually correct.
From a usability standpoint, Chrome and Firefox seems to be the "correct" behaviour.
Known Possible Solutions:
Set Access-Control-Allow-Origin header to allow all, i.e. *
Turn off caching in the browser
Redirect one domain to the other
Use query string to differentiate different domain calls for resource
Embed the font into the CSS as data-uri
For solution 1, let's just say I'm paranoid that I just want to set specific domains to allow.
For solution 2, is not optimal if I were to set it for all browsers, also my site has to run on mobile devices with usually less-than-desirable download speeds.
For solution 3, possible, but I'm still curious for solution to deal directly with the IE9 caching issue.
For solution 4, it is very hard to implement especially when the resource is called from #font-face. Does it mean that I'll have to dynamically re-generate the CSS for different domain calls for the different line just to load a font to bypass the issue? Seems to defeat the purpose of CSS itself, and caching resources for that matter.
edit: Stylesheet works, font-loading doesn't.
For Solution 5, it is tedious for maintenance and updating, especially when there are changes to the font files periodically.
Question: Are there any known ways to deal specifically with IE9's redirect caching behaviour in this particular case?
Answers and comments are very much appreciated. Thanks in advance!
Edit: More browser test information.
Solution 1:
Check this question.
Solution 4: rename your CSS file to style.php and use whatever code you need to call the appropriate resource.
Set the content type at the top of the page.
<?php
header("Content-type: text/css; charset: UTF-8");
?>
More info about style.php from Chris Coyier.
We discovered the same weird behavior also in IE10 and IE11.
Resetting the browser cache makes the fonts to be loaded without any problem. Also enabling and disabling compatibility mode.
But when switching to another subdomain, IE does not render the font because request header does not match the response header which is still the URL of the last request. And IE always shows the full URL for even if the definition on the bucket is *.ourdomain.com
So the general issue with allowing cross origin requests to assets like webfonts was solved by adding CORS permissions to the S3 Bucket - that made the webfonts work perfectly in Firefox.
But we still have no idea how to avoid * and tell IE not to cache the response headers.
We're hosting a couple of HTML5 games that utilise the offline.appcache feature letting games cache a lot better.
To serve the .appcache type however, I had to add the mime type to the server (IIS7) so it wouldn't 404. When I do, it refuses to serve any images or CSS files! The error sent to the browser when I request a CSS or image file is:
The page cannot be displayed because an internal server error has occurred.
The extension I am adding is appcache with the MIME type text/cache-manifest.
Any ideas why it's causing this behaviour?
Finally figured it out, I added the mime type on server level not site level. One of the sites already had that mime type defined. Which caused a conflict. But bizarrely the site with the dual definition was fine, it was the other sites that failed.
I ran into a similar issue when adding the .appcache. All .js and .css file requests responded with an error from IIS. I realized it was because I had not specified a NETWORK: section.
My working .appcache now forces all files to be refreshed and doesn't cause errors:
CACHE MANIFEST
# cache version 1.0.0.6
NETWORK:
*