[Opensim-dev] external host name

[Melanie]

A host name can also be an IP address. IP addresses and hostnames 
are interchangable and we can't assume DNS presence. So, the field 
should accept a name or IP, and resolve names, like almost 
everything else on the internet does.

Melanie


Cristina Videira Lopes 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:
>>> 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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>>> Opensim-dev at lists.berlios.de
>>> https://lists.berlios.de/mailman/listinfo/opensim-dev
>>> ________________________________
>>>
>>>     
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> 
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