A hard-to-reproduce EPollSelector bug...

[David Lloyd]

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...

-- 
- DML