On Thu, Feb 04, 2016 at 01:53:06PM +0100, Holger Freyther wrote:
> 
> > On 28 Jan 2016, at 14:32, Neels Hofmeyr <[email protected]> wrote:
> > 
> > Would anyone like to prevent this commit from reaching master? ;)
> 
> The silent_call handling doesn't fit from an architectural point of view. It 
> is used to demonstrate a security implication of carrying a mobile phone. We 
> simply open a channel and then don't do anything with it. At the same time 
> one will receive measurement reports and could more easily triangulate or 
> actively try to determine where the phone is.
> 
> 
> As such this feature needs to always "accept" a new "Complete layer3 
> information" (as of GSM 08.08). The original todo is indeed not a good one as 
> it has absolutely no meta information. Thinking about the code my goal was to 
> define a more clear ownership of the "MSC" side of an operation. So instead 
> of starting a generic "close soon" timer (or the loc operation timer) have 
> something that takes ownership of the first message. This would mean we 
> dispatch "complete layer3 information" differently than follow up messages. 
> As with many parts this part of the architecture has never been 
> fixed/implemented/corrected as the current is working good enough(tm).
> 
> We can either remove the comment, leave it as such or fix the above text and 
> put it into the code as a fixme/todo.

Most helpful for me would be if you just fixed the todo comment, or handed
me a text I can copy-paste without having to reflect on it myself...

Thx :)

~Neels


-- 
- Neels Hofmeyr <[email protected]>          http://www.sysmocom.de/
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