improves documentation

Change-Id: I5abae06cd5b5127fca97ba12aa8f18d037a95d79
Signed-off-by: José Bollo <jose.bollo@iot.bzh>

1 files changed, 59 insertions, 5 deletions

diff --git a/doc/afb-daemon-vocabulary.md b/doc/afb-daemon-vocabulary.md
index 2531c81a..71771947 100644
--- a/doc/afb-daemon-vocabulary.md
+++ b/doc/afb-daemon-vocabulary.md
@@ -1,31 +1,72 @@
 Vocabulary for AFB-DAEMON
 =========================
     version: 1
-    Date:    25 May 2016
+    Date:    26 mai 2016
     Author:  José Bollo
 
 TABLE-OF-CONTENT-HERE
 
-## Authentification
+## Event
 
-## Context
+Message with data propagated from the services to the client and not expecting
+any reply.
 
-## Level of authorisation (LOA)
+The current implementation allows to widely broadcast events to all clients.
+
+## Level of assurance (LOA)
+
+This level that can be from 0 to 3 represent the level of
+assurance that the services can expect from the session.
+
+The exact definition of the meaning of this levels and of
+how to use it remains to be achived.
 
 ## Plugin
 
+A shared library object intended to be plug to an afb-daemon instance
+to implement an API.
+
 ## Request
 
+A request is an invocation by a client to a method of a plugin using a message
+transfered through some protocol: HTTP, WebSocket, DBUS... served by afb-daemon
+
 ## Reply/Response
 
+This is a message sent to client as the result of the request.
+
 ## Service
 
+Service are made of plugins runnning by their side on their binder.
+It can serve many client. Each one being attached to one session.
+
+The framework establishes the connection between the services and
+the clients. Using DBus currently.
+
 ## Session
 
-A session records data as
+A session is meant to be the unic context of an instance of client, 
+identifying that instance across requests.
+
+Each session has an identifier. Session identifier generated by afb-daemon are UUIDs.
+
+Internally, afb-daemon offers a mechanism to attach data to sessions.
+When the session is closed or disappears, the data attached to that session
+are freed.
 
 ## Token
 
+The token is an identifier that the the client must give to be authentificated.
+
+At start, afb-daemon get an initial token. This initial token must be presented
+incoming client to be authentificated.
+
+A token is valid only for a period.
+
+The token must be renewed periodically. When the token is renewed, afb-daemon
+sends the new token to the client.
+
+Tokens generated by afb-daemon are UUIDs.
 
 ## UUID
 
@@ -34,6 +75,19 @@ It stand for Universal Unic IDentifier.
 Its is designed to create identifier in a way that avoid has much as possible conflicts.
 It means that if two differents instance create a UUID, the probability that they create the same UUID is very low, near to zero.
 
+## x-afb-reqid
+
+Argument name that can be used with HTTP request.
+When this argument is given, it is automatically added to the "request" object of the
+answer.
+
 ## x-afb-token
 
+Argument name for giving the token without ambiguity.
+You can also use the name **token** but it may conflicts with other arguments.
+
 ## x-afb-uuid
+
+Argument name for giving explicitely the session identifier without ambiguity.
+You can also use the name **uuid** but it may conflicts with other arguments.
+