On Thu, Jul 21, 2016 at 03:58:11PM +0300, Ilya Maximets wrote: > On 21.07.2016 15:58, Yuanhan Liu wrote: > > On Thu, Jul 21, 2016 at 03:42:54PM +0300, Ilya Maximets wrote: > >> On 21.07.2016 15:35, Yuanhan Liu wrote: > >>> On Thu, Jul 21, 2016 at 03:13:14PM +0300, Ilya Maximets wrote: > >>>>>> > >>>>>> What do you think of it? > >>>>> > >>>>> I found that we can't check connection status without select/poll > >>>>> on it. 'getsockopt()' will return 0 with no errors if connection > >>>>> is not still established just like if it was. > >>>>> So, I think, the first version of this patch is the only > >>>>> acceptable solution. > >>>> > >>>> Sorry, v2 is acceptable too, because it always calls 'connect()'. > >>> > >>> So you have done the test that it works? > >> > >> No, it's just theory. I don't know how to test this. > >> > >>> I'm more curious to know > >>> could your above case hit the getsockopt() code path, I mean, the > >>> path that errno is set to EINPROGRESS or EISCONN? > >> > >> As I already told, I don't sure that we're able to get EINPROGRESS > >> on our AF_UNIX sockets. > >> In v2 'getsockopt()' check is unnecessary. > > > > We then have no reason to keep it? > > You want me to re-send v2 without 'getsockopt()' check?
Yes, because I'm not sure it will work without select or poll. --yliu