Its one form of syntax ( The motive principle for ABNF is to describe a formal system of a language to be used as a bidirectional communications protocol. ) using which Diameter Protocol is defined.
Please check the https://www.ietf.org/rfc/rfc2234.txt if you are looking for the ABNF details.
I want to know about the significance of each symbol like [ ,{, < , *[ etc used to define a diameter message. Looking for a detailed description.
In one of the article two keywords "stateless" and "statefull" are used in the context of Diameter protocol. Can someone please explain about stateless and statefull session with an example ?
As I have recently started to work on diameter. since I am new for diameter protocol. For now, I just want to know what does the mean of stateless and stateful in diameter ?
