Outside access to the GAE-powered XMPP bots
Origin: Enabling chat outside Google Apps
To use XMPP bots, deployed on Google AppEngine (thanks to the new AppEngine SDK 1.2.5) from non-Google XMPP accounts (jabber.org etc.), in the DNS records for your domain (example.com) add:
_xmpp-server._tcp.example.com. IN SRV 5 0 5269 xmpp-server.l.google.com. _xmpp-server._tcp.example.com. IN SRV 20 0 5269 xmpp-server1.l.google.com. _jabber._tcp.example.com. IN SRV 5 0 5269 xmpp-server.l.google.com. _jabber._tcp.example.com. IN SRV 20 0 5269 xmpp-server1.l.google.com.
[Web 2.0][Google][GWave] Google Wave Federation Protocol with Prosody XMPP server
To be “on the wave” I’ve done some experiments with Google Wave Federation Protocol. Other people already made it working with OpenFire (and another OpenFire install) and ejabberd, so I decided to try with Prosody - very easy to install Lua-based XMPP server, I’m enjoing recently. From version 0.4.0 Prosody have support for external components. My experiments was with the current (0.5.0) version.
Like always in the beginning RTFM - "Components in Prosody". For the Wave protocol - no differences from the other manuals - create fedone war, generate certificates, corect the run-server.sh script etc.
For the Prosody XMPP server (/etc/prosody/prosody.cfg.lua):
Host "*" ... -- External components component_ports = { 5275 } component_interface = "0.0.0.0" ... -- Google Wave experiments Component "wave.example.com" component_secret = "some_secret"
Restart the Prosody server and execute the run-server.sh (be sure the secret in the Prosody config file and in the run script are the same).
Done. Enjoy.
Ruby Sinatra: uninitialized constant Rack::File::MIME_TYPES
Original: rack newb problem w/ 0.9.0
When tried to run a sinatra based application, I received an error message:
./sinatra/lib/sinatra.rb:1156:in `mime': uninitialized constant Rack::File::MIME_TYPES (NameError)
According to Ryan Tomayko "...MIME_TYPES constant got shuffled around in this release (rack release)...".
The solution (temporary) is to define Rack::File::MIME_TYPES by yourself before requiring sinatra:
require 'rack/file' class Rack::File MIME_TYPES = Hash.new { |hash, key| Rack::Mime::MIME_TYPES[".#{key}"] } end require 'sinatra' ...
How to use Archlinux Pacman?
Packages installation:
pacman -Sy package_name - packages installation and local packages db sync pacman -S package_name - packages installation along with dependencies pacman -Sl repository_name - display packages list of a given repository pacman -Sv package_name - information about operation
Removing packages:
pacman -R package_name - removing package without dependencies pacman -Rs package_name - removing package along with dependencies pacman -Rn package_name - purging package
System update:
pacman -Su - update all the packages pacman -Syu - update all the packages and synchronize local packages database
Database queries:
pacman -Ss keyword - search for all packages matching the keyword (where the keyword is a part of the package name) pacman -Qi package_name - information about package pacman -Ql package_name - list files that a given package consist of pacman -Qs package_name - search files installed on hard disk
Other commands:
pacman -Sw package_name - download package without installation pacman -A /file/path/file.tar - install package pacman -Sc - clean cache (old files) pacman -Scc - clean cache (all files)
GMail backup
After the rumors about locked GMail accounts, decided to backup my important emails. The article How to back up your Gmail on Linux in four easy steps helped me a lot. My setting in ~/.getmail/getmail.gmail are (IMAP, Maildir):
[retriever] type = SimpleIMAPSSLRetriever server = imap.gmail.com username = my_name password = my_secret mailboxes = (”personal”,”important”) [destination] type = Maildir path = ~/gmail-archive/ [options] verbose = 2 message_log = ~/.getmail/gmail.log
The backup itself was done via:
$ getmail -r ~/.getmail/getmail.gmail
github error: failed to push some refs
When trying to push to github received:
$ git push To git@github.com:zh/laconica.git ! [rejected] master -> master (non-fast forward) error: failed to push some refs to 'git@github.com:zh/laconica.git'
The solution
$ git pull .... $ git push
I moved my old blog
I converted my old Mephisto-based blog to WordPress and moved it to Freehostia.