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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