hello guys
this is my first post. i am not very much familiar with white box testing.
i have two modules one is teacher and other is student
teacher push a url to student by clicking a push link
now could you help me how to read messages
Teacher agent: command received from teacher system name xyz
teacher agent: message json encoded
send message and wait for response
recieve response from student json decode
check message based on id
appropriate action

this is the flow like any one could help me how to create flow diagrams and the points where the messages needed to be displayed