On 04/01/2016 18:43, Volker Simonis wrote:
:
Alan, what do you mean by "unknown" platform? Currently, as far as I
know, 0x0200 is used by AIX and MacOS X. Do you suggest to name these
platforms explicitly and set it to 0 otherwise? Leaving the default at
0x0200 has the advantage that it would implicitly work on other
platforms like HPUX at the risk that it may be the wrong value on
other, yet still unknown platforms. So in general I'm not against
setting it to 0 on unknown platfroms (as this is the most secure
setting) but in that case we should definitely name AIX and MacOS X as
"known" platforms.
My concern with defaulting to 0x0200 is that it might be used on a
platform where this is not the right value. Defaulting to 0 makes it
easier to catch the issue and allows us to includes assertion that the
socket option is != 0. If we build on versions of AIX and OSX that don't
have SO_REUSEPORT defined then it would be good to get those into the
known platform list.
-Alan
