[noPoll] interactions between nopoll_conn and bsd sockets

[Francis Brosnan Blázquez]

El lun, 18-12-2017 a las 15:08 +0100, Morel Bérenger escribió:

> Hello.


Hello Morel.


> I have noticed in nopoll's documentation that it is possible provide a
> standard socket to nopoll (through nopoll_conn_new_with_socket), but
> there is no mention about who is then responsible of that's sockets
> lifetime and/or related data.



Ok, I'm going to update doc to reflect these points...


> Actually, I am doing several assumptions about that, and I would like to
> know if I am right:
> 
> * nopoll does not takes the socket's ownership (it won't close it),


noPoll takes full ownership. For noPoll, there's no difference between
a noPollConn created using regular API or offloaded and then used
nopoll_conn_new_with_socket.

However, noPoll will not close anything unless you do it (see calls to
nopoll_close_socket throughout the code).

For noPool, ownership here means no one is reading/writing to that
socket but noPoll.


> * the socket can be used in a pollfd struct for polling (I would guess
> it's the primary reason for that construction variant),


Yes.


> * reading or writing from/to the socket is unsafe and would make nopoll
> unreliable (sounds obvious and logic to me, but I'd like to confirm that).



Yes.


> So, could someone confirm or infirm those points? Thanks.
> 
> PS: when registering to the mailing list through the english version of
> the nopoll's website, the page I started on was in spanish, I'm not sure
> if this is intended. Fortunately, the page was not very different
> compared to the ML I have already used.



This seems to be confusing people. I've disabled "spanish" as available
option at the lists.aspl.es interface since "english" is the language
used for the mailing list.

Thanks for pointing this out. Best Regards.



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