Re: 'Virtual' subtree

[mmann78 () netscape net]

You can group fields in whatever way makes sense for your protocol, it doesn't always have to be flat or a "real" field 
(or a "real" structure).  I would think that you would just call proto_tree_add_subtree() and pass it the title of 
<svec-list> or <request-list>.  You may have to call proto_item_set_len later on the proto_item* populated by 
proto_tree_add_subtree() so that the bytes are correctly highlighted.
 
 
 
-----Original Message-----
From: Simon Zhong <szhong.jnpr () gmail com>
To: wireshark-dev <wireshark-dev () wireshark org>
Sent: Tue, Sep 30, 2014 8:59 am
Subject: [Wireshark-dev] 'Virtual' subtree



Hi,
I'm working on PCEP dissector, I'm wonder if it's possible to create a 'virtual' subtree.
The format of a message is as follows:
<PCReq Message>::= <Common Header>
                  [<svec-list>]
                  <request-list>
where: <svec-list>::=<SVEC>[<svec-list>]
      <request-list>::=<request>[<request-list>]
      <request>::= <RP>
                   <END-POINTS>
                   [<LSPA>]
                   [<BANDWIDTH>]
                   [<metric-list>]
                   [<RRO>[<BANDWIDTH>]]
                   [<IRO>]
                   [<LOAD-BALANCING>]
...
As you can see there's no real field called <svec-list> or <request-list>, it's just set of some other real fields. But 
I believe it will be more clear if we can present these real fields under a 'virtual' subtree, instead of presenting 
them flatly.
Is there any way to do this? Thanks.
/Simon




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