安德森技術備忘板

Dimdim is a cool new open source meeting service that lets you share your desktop, presentations, audio and video. Its also web based, and needs no installing. On top of all this, it works on Mac, Linux and even Windows! Its still alpha at the moment, but definately useable. Heres how to install it on Ubuntu server 6.06 or {insert your distro here}. The readme that comes with the tarball is very good, so have a look at that as well, but here are the basics:

Install Ubuntu base system

Just boot the ubuntu server cd and choose INSTALL TO HARD DISK.

Install java

sudo aptitude install sun-java5-jre

Download dimdim from http://sourceforge.net/project/showfiles.php?group_id=176809 and move it to /usr/local/dimdim

tar zxvf dimdim_160_Alpha_080307.tar.gz #The version number is likely to be different
sudo mv dimdim /usr/local/

Configure dimdim

cd /usr/local/dimdim

Edit server.xml

vi server.xml

Edit the port definition, 80 is probably the easiest, but change it to taste

<!-- Define a non-SSL HTTP/1.1 Connector on port 8080 -->
<Connector port="DIMDIM_PORT_NUMBER" maxHttpHeaderSize="8192"
maxThreads="1500" minSpareThreads="250" maxSpareThreads="750"
enableLookups="false" redirectPort="8443" acceptCount="100"
connectionTimeout="20000" disableUploadTimeout="true" />
<!-- Note : To disable connection timeouts, set connectionTimeout value
to 0 -->

Change to

<!-- Define a non-SSL HTTP/1.1 Connector on port 8080 -->
<Connector port="80" maxHttpHeaderSize="8192"
maxThreads="1500" minSpareThreads="250" maxSpareThreads="750"
enableLookups="false" redirectPort="8443" acceptCount="100"
connectionTimeout="20000" disableUploadTimeout="true" />
<!-- Note : To disable connection timeouts, set connectionTimeout value
to 0 -->

Edit dimdim.properties

Edit the following parameters:

vi dimdim.properties

dimdim.serverAddress # should be your server url, ie dimdim.mydomain.com
dimdim.serverPortNumber=80 # change if you use a different port

and lastly the email config

email.server=<smtp server address> 
email.user=<smtp user name>
email.password=<smtp user password>
email.sender=<full email address of the above user> 
email.PORT=<smtp port number>

Now edit the wrapper.conf for the java path:

vi ConferenceServer/apache-tomcat-5.5.17/conf/wrapper.conf

# Java Application
#wrapper.java.command=DIMDIM_JAVA_HOME/bin/java
wrapper.java.command=/usr/bin/java # add this line for ubuntu, or change according to where java is on your system

All done, now just start the beast

sudo /usr/local/dimdim/dimdim start

If that all works, you can now go to http://your.server.address and start using dimdim

Add service links

dimdim comes with a service wrapper, which makes it pretty easy to put into your *nix system. First we add a soft link to /etc/init.d/, then make sure it starts up when the server reboots.

sudo ln -s /usr/local/dimdim/ConferenceServer/apache-tomcat-5.5.17/bin/dimdim /etc/init.d/
sudo update-rc.d dimdim defaults

Restrict presenter access

You may want to restrict the users that can start a presentation. At the moment, there is a very basic way to do this:

Edit  /usr/local/dimdim/ConferenceServer/apache-tomcat-5.5.17/webapps/dimdim/WEB-INF/dimdimPresenters.txt and add the email addresses allowed to start a presentation. No, theres no authentication.

Edit  /usr/local/dimdim/dimdim.properties and set dimdim.authenticationPolicy=CHECK_EMAIL

Restart dimdim

Obviously this is not an ideal way to restrict it, but it seems to be being worked on.