Hi Dimuthu,

50239 is the port that ESB opens up in order to communicate with the
back-end, hence you see packets going directly from 50239 -> 9000 (we call
them TargetConnections).

8280 is the port that ESB opens up to the clients (listener port), not to
the back-end.


On Sat, Nov 30, 2013 at 7:34 PM, Dimuthu Upeksha <[email protected]> wrote:

> Hi all,
>
> I'm an intern of WSO2. I am going through several tutorials about WSO2 ESB
> and managed to test some samples given in  [1]. As given in the tutorial I
> was able to simulate message mediating done in ESB. Then I captured the
> packets that are transferred through localhost using Wireshark [2]. I could
> see three ports involved in the process.
> Port 9000 : Listener port of Axis 2 server
> Port 8280 : Port of ESB (I think so)
> Port 50238 : Port of the client
> Port 50239 : I have no idea about this port however it seems like another
> port of the client
>
> At the first set of packets I could see that client is communicating with
> the ESB and ESB is communicating with the Axis2 server : which is legal.
> But at the end I could see that Port 50239 is communicating directly with
> 9000 (Packet no 11). Is this legal? Shouldn't it communicate with port
> 8280? If client communicate with the server directly what is the role of
> ESB as a message mediator? Correct me if I'm wrong.
>
> Thank you
>
> Best Regards
>
> [1] http://docs.wso2.org/display/ESB470/Lesson+Two%3A+Mediating+Messages
> [2] https://www.dropbox.com/s/skxozdvu61kyd0c/packet_capture
>
> Dimuthu Upeksha
>
> _______________________________________________
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> [email protected]
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>
>


-- 

Thanks & regards,
Nirmal

Senior Software Engineer- Platform Technologies Team, WSO2 Inc.
Mobile: +94715779733
Blog: http://nirmalfdo.blogspot.com/
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