Extend the parser and add few fields for service types

[biswajitutil]

Hi,
I want to add few new fields in each of the service types of structure. Those fields are already available in each packet. How can I achieve this?

I want to include:

Message Type
Chunk Type
Message Size

for all service types as this is available in each service type.

Similarly,
I want to get request and response header fields for each service types which typically contain

Authentication token
Timestamp
request handle
service result
return diagnostics ( audit entry id, timeout )

Can you give one example for any service type so that I can extend it for others?
Your help is appreciated.

Thanks
Biswa