Awesome.  Thanks for the details.  I had that feeling but needed to confirm.

Thanks

On Fri, Sep 17, 2021 at 11:30 AM Jonathan Valliere <john...@apache.org>
wrote:

> TCP_SAVED_SYN = 28 is the 28 option for the TCP level in Linux
> SO_PEERNAME probably does the same thing as getpeername
> <https://man7.org/linux/man-pages/man2/getpeername.2.html>
>
> I'm at a loss to understand how to read that Host Identity option from TCP
> in C
>
> On Fri, Sep 17, 2021 at 11:21 AM Jonathan Valliere <john...@apache.org>
> wrote:
>
>> I see SO_PEERNAME = 28 but can't find any documentation of how to use it.
>>
>> Anyway, Java does not support this option.  Therefore, MINA does not.
>>
>>
>>
>> On Fri, Sep 17, 2021 at 10:55 AM Marc Boorshtein <mboorsht...@gmail.com>
>> wrote:
>>
>>>
>>> On Fri, Sep 17, 2021 at 10:44 AM Jonathan Valliere <john...@apache.org>
>>> wrote:
>>>
>>>> That has to be implemented at the kernel.
>>>>
>>>>>
>>>>>
>>> like, in linux?  i think its there already.  There's
>>> https://www.ebower.com/w/index.php/Client_IP_Visibility that shows this
>>> being done manually using tcpdump.  Is this data available from IoSession
>>> or at all to MINA?
>>>
>>> Thanks
>>> Marc
>>>
>>

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