From RFID Wiki

[edit] GP

Guardian Protocol is a message format used for communicating with the Guardian, by humans as well as by Guardian-enabled readers.

The message format is described by its own micro-language, given by the grammar in ~MRG/src/GP/parse/grammar.g. The current set of messages in this micro-language is in ~MRG/include/GP/mrg_GP.x. This description is compiled to stub implementations in C and in Java.

The C stubs are generated as:

~MRG/include/GP/mrg_GP_generated.h for the C types and prototypes

~MRG/src/GP/common/mrg_GP_generated.c for the C stub implementations.

The Java stubs are generated in:

~MRG/java/nl/vu/cs/rfidguardian/GP/

using an ant build file in ~MRG/java.

The application fills in a request message as described in the (proto)types and sends it over a Guardian SSL channel. The Guardian reads it from the channel, parses it, acts, and sends a reply in the same manner. The application receives and parses the reply.

This approach attempts at maximal consistency between the C and Java messages.

Depends on:

Guardian SSL

sockets

(emulator)