[Opensim-dev] external host name

[Teravus Ovares]

I agree.  It is inconstant.  On purpose. :).   As I said, remoting
issues caused regions in Linux and Windows to be unable to tell each
other that they were online using the RegionInfo object.

Best Regards

Teravus

On 12/11/08, Cristina Videira Lopes <lopes at ics.uci.edu> wrote:
> The thing is that this can potentially create a RegionInfo data structure
> with
>            nRegionInfo.ExternalHostName = regionData.IPADDR;
>
> This is inconsistent with certain queries on the Grid server, like "give me
> all my neighbors" which may send host names.
>
> So, back to the point: someone needs to decide what is it that
> RegionInfo.ExternalHostName  is supposed to hold.
>
>
> Teravus Ovares wrote:
> RegionUpData is my fault, and spawned from compatibility issues with
.NET
> remoting and Mono remoting with complex types. It is only used
to notify a
> neighbor region that 'this region is up'

Best Regards

Teravus

On
> 12/11/08, Cristina Videira Lopes <lopes at ics.uci.edu> wrote:

> Things are very messy right now. You can search for "sim_ip", for
> example,
which is used in chatting with the grid server, and where it is
> being
converted to an IP address in about half of the cases.

To compensate,
> and before I noticed this inconsistency, Homer introduced
another field
> called "sim_host", so not to mess with what was already there,
that is
> supposed to carry the external host name, but this only works up to
the
> point in which RegionInfo data structures are created. At that point,
> we
need to decide what to place in m_externalHostName, sim_ip or
> sim_host.
Which means changes in OGS1.

I also noticed that there is yet
> another data structure called RegionUpData
that uses IP addresses.

So,
> messy. Someone should decide what this field is supposed to be, and make
it
> a rule.

Charles Krinke wrote:

Dear Diva:

You have a very good point and I
> would support harmonizing to one notion
even at the expense of breaking some
> things for a while.

In fact, if someone can identify what some of those
> things are, or come up
with a couple of search strings or grep expressions,
> I would like to look at
the anomalies myself.

+1 on
> external_host_name

Charles

________________________________


From:
> Cristina Videira Lopes <lopes at ics.uci.edu>
To:
> opensim-dev at lists.berlios.de
Sent: Thursday, December 11, 2008 2:42:05
> PM
Subject: [Opensim-dev] external host name

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.
MailScanner
> has detected a possible fraud attempt from "128.200.71.43:9000"
claiming to
> be MailScanner warning: numerical links are often malicious:
MailScanner
> warning: numerical links are often malicious:
> 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 s! tructures. 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

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