Session Layer

The Agent Gateway Protocol (AGP) Session Layer manages and maintains the communication state between agents and their respective gateways. It provides essential services for establishing, maintaining, and terminating sessions between communicating entities in the AGP ecosystem.

Flow Diagram

        sequenceDiagram
    participant Agent
    participant SessionLayer
    participant Gateway

    Agent->>SessionLayer: Initialize Session
    SessionLayer->>Gateway: Session Request
    Gateway->>SessionLayer: Session Acknowledgment
    SessionLayer->>Agent: Session Established

    rect rgb(200, 200, 200)
        note right of Agent: Active Session
        Agent->>SessionLayer: Data Exchange
        SessionLayer->>Gateway: Session-managed Communication
        Gateway->>SessionLayer: Response
        SessionLayer->>Agent: Processed Response
    end

    Agent->>SessionLayer: Terminate Session
    SessionLayer->>Gateway: Session Closure
    Gateway->>SessionLayer: Closure Acknowledgment
    SessionLayer->>Agent: Session Terminated

Key Features

Session Establishment: Handles the initial handshake and connection setup.
State Management: Maintains session context and state information.
Security: Implements session-level security measures and token management.
Error Recovery: Provides mechanisms for handling session interruptions and failures.
Session Termination: Manages graceful session closure and cleanup.

Architecture

The session layer operates between the transport and presentation layers, providing a reliable communication framework for higher-level protocol operations. It ensures the following:

Secure session initialization.
Stateful communication.
Error handling and recovery.
Graceful session termination.