[Tech] Fcp notes and issues

[Matthew Toseland]

Well, in the current API, you can either come up with a unique name, or not 
have any client-name-specific state i.e. either have no persistent requests 
or store them all on the global queue. I don't see how any other solution 
would help - if you start persistent requests, exit, another client steals 
your name, you give way to that client, then you'll have lost them.

On Friday 30 November 2007 13:48, Juergen Urner wrote:
> Matthew Toseland wrote:
> >
> > Collisions result from one of two scenarios:
> > 1) The client doesn't have a unique name. This is a bug in the client.
> > 2) Two copies of the client are run simultaneously. FCP is intended to be 
used 
> > by one computer, clients which care about this can further uniquify their 
> > names by e.g. adding the local username.
> >   
> 
> First of all, sorry for taking so much of your time. I am aware that 
> this is a corner case.
> 
> case1:
> if a client can not come up with names that are guaranteed to be unique
> within the client its a client bug. True.
> 
> case2:
> Correct me if I am wrong, but I'd assume case two applies on unrelated 
> clients
> aswell, not only on multiple instances of the same client. If my assumption
> is true, clients have to be prepaired to deal with the fact that a collision
> might happen the very next moment. Either this or the node takes over
> due to the fact that it is the only instance that can guarantee uniquness
> in this case.
> 
> 
> Sidenote:
> I know how to come up with a name that is highly likely to be unique. I
> implemented RFC 4122 in Python and am pretty much aware of the drill
> and the limitations of of any approach in this direction.
> 
> 
> Juergen
> 
> 
> 
> 
> 
> 
> 
> 
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