[freenet-dev] [freenet-cvs] r16744 - trunk/freenet/src/freenet/node

[Matthew Toseland]

On Friday 21 December 2007 15:46, Robert Hailey wrote:
> 
> On Dec 21, 2007, at 7:28 AM, Matthew Toseland wrote:
> 
> > Is this wise? It usually indicates a moderately serious problem, if  
> > there are
> > many of them there may be e.g. a link layer bug ... ? I suppose  
> > eventually
> > we'll get a PacketSequenceException in that case, so maybe NORMAL?  
> > These
> > could also indicate deliberate replays, though I don't see much  
> > point, and we
> > may not want to log them if so..
> 
> Before decreasing it so, I would get this message very frequently. It  
> may be a local router duplicating packets (which doesn't know the best  
> route?).

Or it might be a link level problem in our code, which IMHO is more likely 
atm.
> 
> IIRC, the deal with UDP is that (1) you may not get the sent packet,  
> (2) you may not get them FIFO, and (3) you might not get only one of  
> them.
> 
> So far as deliberate replays... seeing that the very next statement we  
> ignore the packet, you are right: the only possible DoS would involve  
> excessive logging, and no log statement at all would be better.
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