A hard-to-reproduce EPollSelector bug...

[David Lloyd]

On Thu, Mar 15, 2018 at 10:30 AM, David Lloyd <david.lloyd at redhat.com> wrote:
> On Thu, Mar 15, 2018 at 9:43 AM, David Lloyd <david.lloyd at redhat.com> wrote:
>> On Thu, Mar 15, 2018 at 9:17 AM, Alan Bateman <Alan.Bateman at oracle.com> wrote:
>>> On 15/03/2018 14:02, David Lloyd wrote:
>>>>
>>>> This talk of Selectors has indirectly reminded me of a problem that we
>>>> encounter, particularly in testing, which I think is a bug (or maybe
>>>> just a surprise) in the EPollSelector implementation on Linux.
>>>>
>>>> The symptom of the problem is that a ServerSocketChannel is closed,
>>>> yet a subsequent bind operation which definitely happens-after the
>>>> close on the same socket address can fail with EADDRINUSE (even if
>>>> SO_REUSEADDR is used).
>>>>
>>> Do you have a reproducer? If so, can you run it on the latest JDK 11 build
>>> where the bind method is now correctly synchronized on the channel state.
>>
>> I might be able to write one.  I'll give it a try anyway...
>
> Well my naive hope that I could create a quick & dirty fix has been

Reproducer, not fix...


-- 
- DML