Archive for January, 2011
Over the last week I have been reading up on xmpp, I started out with reading two RFC’s: 3920 and 3921. These gave me a more in depth understanding of xmpp. However I am mostly interested in the publish/subscribe extension for xmpp (XEP-0060).
Publish/subscribe can be used for a lot more (see XEP-0163) but one of the most logical implementations to start with would be publish/subscribe as a rss-polling replacement. Right now a lot of people get updates for a website via an aggregator, this basically works by fetching an rss or atom file on a given interval and then parsing the result. Lets say your interval is 1 hour, then a worst case senario would be that you get the update 59 minutes later than it is published. A “solution” would be to set the interval to 1 minute. However this creates unessesarry bandwidth (and load) to the server.
For all this publish-subscribe seems to be the solution. The best way to see it is as a one-way chat. When a news items (or blog post or whatever) is post an item is published to a node. That node then sends out the notification to all subscribed clients. It is clean and simple (for a more in depth explanation you should read the XEP or google a bit!).
Now it would be awesome to see this implemented in some aggregator (especially Akregator since I am a kde-man), of course that would have to be done in such a way that I can use my existing JID (Jabber-ID) but that it does not appear online or receives other messages.
I think a good way to start is for me just to check-out the sources of Akregator, yet another project
I was looking around in the world of QR Code today and found that you can share your WiFi (SSID, password and network type) via a QR code! It works flawless on android and probably also on other platforms. Will safe me a lot of time to tell people the password every time!
- Go to a QR code generator site (I used this one“).
- Choose “WiFi Network for Android” from the drop down list.
- Fill in you network details and export (to SVG of course since vector graphics rule!).
- Print the code and put it on the refrigerator or something .
- Let your friends scan the code.
Awesome stuff those QR codes!
This year I will be attending FOSDEM! Together with Sander and Daan I will be in Brussel from Saturday morning till Sunday evening! I am very excited and really looking forward to all the talks and discussion with everyone!
See you all at FOSDEM!