Problem: when adding a shortcut of a webpage to the Android home screen, Chrome used <link rel=”icon” …> to give this shortcut an icon. Lately Google Chrome broke this feature (intentionally probably). Chrome just shows a grey round circle with a single letter instead of the provided icon. Discussion: Google removed it’s claim “don’t be […]
Icon Missing When Adding a Webpage to the Android Homepage Read More »
Problem: Chrome shows an error message like “NET::ERR_SSL_OBSOLETE_VERSION” when connecting to an old device. This might be an old network device or printer or KVM switch oder DRAC/RemoteInside port of servers. Discussion: since Chrome ~98 Google decided that you are not allowed to connect devices that use TLS1.1 and below, only TLS1.2 and above are
Chrome Refuses to Connect to Old Devices Read More »
As an IT professional it’s quite common that have to connect web servers with invalid certificates, for different reasons. For expample opening a management GUI of an appliance may be necessary to change its own certificate or TLS settings. Problem: sometimes chrome won’t let you open this website, and gives you no “Proceed on” button.
Chrome Won’t Let You Proceed to Website with Invalid Certificate Read More »
Problem: after upgrading vom greenlock-express v2.0 to v2.5 and switching from acme-v1 to acme-v2 every attempt to register a new TLS cert with Letsencrypt fails with “ECONNRESET” Discussion: the new version of greenlock tries to validate the .well-known/acme-challenge file before asking letsencrypt for the certificate.If your webserver is behind a loadbalancer or firewall and the
Greenlock(-express) Letsencrypt Fails with ECONNRESET Read More »
Problem: Akamai is showing very high edge traffic volume, but other sources of accounting show less traffic, and Akamai is billing this high volume! Discussion: I activated log shipping to compare the volume of the shipped data, to the reported volume by Akamai. The difference was +66% in the Akamai volume. Support was not help
Akamai High Traffic Volume Read More »
Problem: current Chrome browsers cut URl parts and hide the correct URL. https://www.derstandard.at/ is shown as derstandard.at. This is simply wrong from the technical point of view. And it might even be dangerous for some URLs form a security standpoint. Solution: there is an option to disable this bug:chrome://flags/#omnibox-ui-hide-steady-state-url-trivial-subdomains Update: oogle ropped his ption. The
Chrome Destroys URLs in the Location Line Read More »
Akamai just works, … most of the time. But sometimes you have to check what’s going on, and Akamai gives you a handy tool for this. There is an HTTP request header that tells Akamai to respond with some internal information. Pragma: akamai-x-cache-on, akamai-x-cache-remote-on, akamai-x-check-cacheable, akamai-x-get-cache-key, akamai-x-get-ssl-client-session-id, akamai-x-get-true-cache-key, akamai-x-get-request-id With this request header Akamai includes
Problem: I had problems with an audio driver (no not on Linux). The sound started with a delay after every gap of silence. This bug cuts off about 1/2 of a second of the attack of the sound. This is a problem when you try to make music in particular. Workarround: I made a little webpage that
Problem: A responsive webapp shows a google map with markers that are clickable. On desktop everything works as expected, but on mobile the markers are not clickable. Discussion: After debugging with chrome remote inspector, I found that a div->frame with opacity:0 was lying above (explicit z-index:2) the clickable markers. I don’t know what this frame is for,
Google Maps Marker on Mobile Read More »
Problem: Google had a nice feature to build google maps from rss geo information with a simple iframe tag, but this service is discontinued. <iframe width=”920″ height=”450″ frameborder=”0″ scrolling=”no” marginheight=”0″ marginwidth=”0″ src=”https://maps.google.com/?q=http:%2F%2Ftothepin.blogspot.com%2Ffeeds%2Fposts%2Fdefault&ie=UTF8&t=t&source=embed&output=embed”> </iframe> You could actually add ?q=rssfeed to the maps.google.com url and it produced a map from all geo data in this rss feed. Solution: The
Google Map from RSS Feed Read More »