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From: Ilya Maximets <i.maximets@samsung.com>
Subject: Re: [PATCH] vhost: fix connect hang in client mode
Date: Thu, 21 Jul 2016 15:42:54 +0300
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Cc: dev@dpdk.org, Huawei Xie <huawei.xie@intel.com>,
 Dyasly Sergey <s.dyasly@samsung.com>, Heetae Ahn <heetae82.ahn@samsung.com>,
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To: Yuanhan Liu <yuanhan.liu@linux.intel.com>
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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.