Re: [lwip-devel] Removing the restriction on number of sockets

[Joan Lledó]

> For GNU Hurd deployment, is LwIP only being used in a single process?  Or is 
> there no desire to use select for GNU Hurd?
>

The stack is working as a single process, and we use lwip_select(),
but the function is being called from one single point, so I just
allocate the required amount of bytes before calling lwip_select(),
based on the socket number, and cast the memory area to be treated as
a pointer to fd_set[1]. But this cannot be done in LwIP because FD_SET
and pals check for overflow and because it would require all
applications to do the same before calling lwip_select().  I'm not
even happy with the solution but we really need to provide unlimited
number of sockets.

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[1] 
https://github.com/jlledom/lwip-hurd/commit/ad7bf3a9342c9e75e042ce1040797392b98d24df