On 07/30/09 11:48, "Christiaan Hofman" <cmhof...@gmail.com> wrote:
>
> On Jul 30, 2009, at 4:38 PM, Adam R. Maxwell wrote:
>
>>
>> On Jul 30, 2009, at 7:14 AM, Sven-S. Porst wrote:
>>
>>>> Perhaps it would be possible to use a single service with a single
>>>> port (in the background thread), but I'm not sure if that works with
>>>> DO (I've certainly never seen sample code for that). I know too
>>>> little
>>>> about ports to know for sure if the port used by the netservice
>>>> can be
>>>> used for DO.
>>
>> I tried that a couple of times and couldn't get it to work. I don't
>> know enough about BSD sockets to do anything more.
>>
>
> Did you ever try something like this
> <http://www.cocoadev.com/index.pl?DistributedObjectsAndBonjour
Something similar, I think, and I disabled my firewall. I think whichever
one uses the port first keeps the other from using it. DO has so much magic
involved that it's hard to know what went wrong. What bothers me is that
calling write() on the same socket from different threads or objects seems
wrong, so I'm not sure they can be the same.
>> ?
>
> Christiaan
>
>>> I just want to make clear that my point weren't the open ports
>>> anyway,
>>> but the fact that they are advertised via Bonjour. Does that
>>> additional port have to advertised in this way so other applications
>>> can discover it independently (that'd seem unlikely to me as it's
>>> unclear how the service would be identified from the Bonjour entry
>>> without any description beyond that it's a generic NSSocketPort).
>>
>> It's not for discovery. It's internal DO machinery from
>> NSSocketPortNameServer, as Christiaan said, and it lets you connect
>> over an NSPort by knowing only the service name and hostname. Your
>> alternative would be vending it over a hard-coded TCP port number,
>> according to the documentation.
>>
>> -- adam
>
>
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