Wireshark · Wireshark-dev: Re: [Wireshark-dev] Define dissector port

[Guy Harris <guy@xxxxxxxxxxxx>]

sharon lin wrote:

> I would like that user of my dissector will define the port on which the 
> protocol works on from the regular expression field
>  
> for example myProtocol.port == 1000

I don't see any regular expression there.

The way dissectors that let the user define the port the protocol works 
on is by adding a protocol preference with the port number.  See, for 
example, epan/dissectors/packet-actrace.c.

You could specify that from the command line with "-o 
myProtocol.port:1000", or from the GUI in Edit -> Preferences.