[Commotion-dev] DNS Update

[Will Hawkins]

You can now find discussion of this item on Redmine in the
commotion-android project under Feature #300.

https://code.commotionwireless.net/issues/300

Will

On 05/15/2012 01:25 PM, Will Hawkins wrote:
> Thanks for this Hans.
> 
> This setup is meant now only for Android, but it could be useful for
> other platforms that do not readily support /etc/hosts-formatted files.
> In all honesty I never considered a Java DNS implementation that could
> simply run in a separate thread. That is something that I will
> definitely look into.
> 
> As for the files themselves, these do go into the app-local data
> directories. The installation definitely does not pollute the OS file
> system beyond that. I'm sorry if there was confusion in my previous
> email regarding that point.
> 
> Will
> 
> On 05/15/2012 12:09 PM, Hans-Christoph Steiner wrote:
>>
>> Sounds good.  Is this setup meant to be only for Android or other platforms too?  I ask because it'll probably be easier to manage a pure Java DNS server as an Android Service than adding another C binary.
>>
>> As for writing out a non-standard file like /etc/hosts-formatted, if you are writing a custom file, then it should go into the app's file hierarchy.  It is important to avoid touching the filesystem as much as possible.  This file could go into /data/data/net.szym.barnacle/app_bin or we could create ...../app_etc or something like that.
>>
>> .hc
>>
>> On May 14, 2012, at 4:22 PM, Will Hawkins wrote:
>>
>>> Hello all!
>>>
>>> I just wanted to give everyone an update on what's going on here: I am
>>> working on adding capability to the client to handle DNS entries
>>> distributed in the mesh (via olsr nameservice plugin). Because Android's
>>> /etc/hosts file is on the readonly file system, simply telling olsrd to
>>> write out an /etc/hosts file (like it would normally do on a *nix host)
>>> does not work.
>>>
>>> So, I cross-compiled a small (300k) DNS server that the app invokes when
>>> the user connects to the mesh. This server answers queries by first
>>> looking for an answer in an /etc/hosts-formatted file. If there are no
>>> matches, the DNS server forwards the request.
>>>
>>> In my testing it works fairly well. I am still integrating it into the
>>> build but I wanted to give everyone an update.
>>>
>>> Talk to you all soon!
>>> Will
>>> _______________________________________________
>>> Commotion-dev mailing list
>>> Commotion-dev at lists.chambana.net
>>> http://lists.chambana.net/mailman/listinfo/commotion-dev
>>>
>>
>>
> 
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