how to collect packets when the communication is on the same machine?

["Wang, Xiaodong" <xwang () EzeCastleSoftware com>]

Hey everyone,

           I am a fresh user of WireShark.

           Currently, I need to catch the packets locally from one port to another. But I runs the WireShark and it 
seems that there is no packets recorded even I did send packets through the application. Do I have to configure 
somewhere else in the WireShark to do so?

Thanks and look forward the answer,
Regards,

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