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From daune...@daune-consult.com
Subject Re: [Mina] 'messageSent' semantic
Date Wed, 11 Jan 2006 15:24:02 GMT

I was trying to measure *in the server* the time between a message is received
by the client and the reply is received by the server.

This would have been nice for my performance tests.

But it merely seems impossible.

J-F

> Hi,
>
> On 1/11/06, Niklas Therning <niklas@trillian.se> wrote:
>> Well, I'm not an expert on TCP/IP but from what I know I think it will
>> be hard and require very low level programming to achieve that kind of
>> control. The Java abstraction of Socket IO (both blocking and
>> non-blocking) is too high-level.
>>
>> I guess one would have to map packet sequence numbers to messages and
>> then be able to intercept acknowledges of sent packets to do what you
>> want. I'm not sure if OS:es allows you to get that kind of control.
>
> I think what he needs to is to implement a "correlation identifier"
> (http://www.enterpriseintegrationpatterns.com/CorrelationIdentifier.html)
> in his message protocol.
>
>>
>> But as I said, I'm no expert on TCP/IP so please correct me if I'm wrong.
>>
>> /Niklas
>>
>




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