Re: Wireshark Lua question.

[Stig Bjørlykke <stig.bjorlykke () gmail com>]

On 5. okt. 2009, at 22.07, Morita, Bill wrote:

> I am seeking help in how to access the source and destination IP  
> from a
>   TCP packet in a LUA dissector of a protocol that uses TCP for  
> transport.

You can use two methods to fetch the IP address:

1. The value in the "Source" column can be fetched from pinfo.src.

2. The value in "ip.src" can be fetched using a Field:

   ip_src_f = Field.new("ip.src") ; must be registred outside the  
dissector

   if ip_src_f() then
     ip_src = ip_src_f().value
   end


When printing you have to use tostring(pinfo.src) or ip_src_f().label


-- 
Stig Bjørlykke


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