Two different nodes in the network are connected to each other communicating. Meanwhile, it is the job of the Session layer to maintain and coordinate communications between them. While “session” means the data exchange between two workstations, the task of the Session layer is more in managing than transferring data. We would use term “session” as a connection between client and server in our research.
Mostly Session layer is used for applications that require precision in data exchange, like live video and audio streaming. Other functions of Session layer are:
making sure the connection is active during session;
securing the connection;
dialogue synchronization;
checking for connection failure;
reconnecting if connection is cut off;
terminating communication;
defining node communication order and timing.
If the connection is broken or can not be established, the session layer is responsible for informing clients software that communication ended. Also session layers would ensure only authorised for session nodes are connected.
