[Opensim-dev] external host name

[Cristina Videira Lopes]

It turns out that a lot of problems with CAPs have to do with 
inconsistencies surrounding the URL of the seed cap. Specifically, in 
some cases we're producing URLs with hostnames, other times we're 
producing URLs with IP addresses, for example:

http://ucigrid03.nacs.uci.edu:9000/CAPS/4cfc94fa-09be-409b-b136-cda2cdde0000/
vs.
http://128.200.71.43:9000/CAPS/4cfc94fa-09be-409b-b136-cda2cdde0000/

The client is not smart enough to test if this is the same host, it 
assumes it isn't, so it decides someone's trying to game it.

The inconsistencies are all over the code in OpenSim, and they pertain 
to the use of ExternalHostName in several data structures. In some 
cases, an explicit conversion to IP addresses is made.

We should converge to one single thing. And I believe that thing should 
be whatever it is given in external_host_name config. Is this right? 
However, I am a bit afraid this is going to break 17 different things...

Crista