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+# CDASim Adapter Plugin Plugin Documentation
+
+## Introduction
+
+This Plugin is an adapter for integration with the **CDASim Co-simulation** enviroment. 
+
+## Related Plugins
+
+A list of plugins related to the CDASim Adapter Plugin.
+
+### Immediate Forward Plugin
+
+For RSU Immediate Message Forwarding (IMF) functionality forward J2735 messages to CDASim.
+
+### Message Receiver Plugin
+
+The Message Receiver Plugin for receiving incoming J2735 message from CDASim.
+
+## Configuration/Deployment
+
+### System Configuration
+
+This plugin uses several system configuration parameters set as enviroment variables described below.
+
+**SIMULATION_MODE** – Environment variable for enabling simulation components for V2X-Hub. If set to "true" or "TRUE" simulation components will be enable. Otherwise, simulation components will not be enabled.
+**SIMULATION_IP** – Environment variable for storing IP address of CDASim application.
+**SIMULATION_REGISTRATION_PORT** – Environment variable for storing port on CDASim that handles registration attempts.
+**TIME_SYNC_PORT** – Environment varaible for storing port for receiving time sync messages from CDASim.
+**V2X_PORT** – Environment variable for storing port for receiving v2x messages from CDASim
+**SIM_V2X_PORT** – Environment variable for storing port for sending v2x messages to CDASim
+**V2XHUB_IP** – Environment variable for storing IP address of V2X Hub.
+**INFRASTRUCTURE_ID** – Environment variable for storing infrastructure id of V2X Hub.
+**SENSOR_JSON_FILE_PATH** – Environment variable for storing path to sensor configuration file. This is an optional simulation environment variable that allows for setting up simulated sensor for a V2X-Hub instance. Example file can be found in the **CDASimAdapterPlugin** tests [here](../src/v2i-hub/CDASimAdapter/test/sensors.json).
+
+### Plugin Configuration
+
+In addition to the system configuration, the CDASim Adapter also has plugin configuration parameters that can be set via the admin portal.
+**LogLevel**:The log level for this plugin"
+**X**:Cartesian X coordinate in simulated map (in meters
+**Y**:Cartesian Y coordinate in simulated map (in meters).
+**Z**:Cartesian Z coordinate in simulated map (in meters).
+**MaxConnectionAttempts**:Number of connection attempts CDASimAdapter plugin will execute before failing. Valid values are any integers greater than or equal to 1. Any value less than 1 will result in unlimited connection attemtps.
+**ConnectionSleepTime**:Number of seconds to wait after a failed CDASim connection attempt, before retrying to establish connection. Valid values are equal or greater than 1. Any value less than 1 will be treated as 1.
+
+## Design
+
+### Communication
+
+![Alt text](docs/communication_diagram.png)
+The integration with the **CDASim Co-simulation** enviorment consists of 4 major parts:
+
+**Registration Adapter**: The CDASimAdapter will establish a unique connection with CDASim and provide configuration information about harware like RSUs or Sensors associated with V2X-Hub.
+
+**Time Adapter**: The CDASimAdapter will consume and broadcast simulation time from the CDASim enviromment to ensure all plugins are using simulation time in place of machine time.
+
+**Message Adapter**: The CDASimAdapter will forward V2X messages to CDASim for simulated radio broadcast. It will also listen for incoming simulated V2X message recptions for the RSUs it registered with CDASim.
+
+**Simulation Adapter**: This final part captures any simulated events V2X-Hub needs to listen for. An example is Sensor Detections. When registering a sensor with CDASim, the sensor is created and detections from that sensor need to be forwarded to V2X-Hub. The simulation adapter will listen for these events from CDASim and broadcast them on the TMX message bus for other plugin.
+
+### Messages
+
+**Time Sync Message**: A V2X-Hub message that all PluginClientClockAware plugins subscribe to when running V2X-Hub in the simulation environment. This updates the base class clock object to allow for seamless integration of plugins into the simulation environment. 
+
+**Sensor Detected Object**: V2X-Hub's generic message for detection data. This message is generated when the CDASim adapter receives a detection interaction for one of the sensors it registers.
+
+## Functionality Testing
+
+Included in this directory is a `scripts` directory that includes scripts to mock a CDASim Server listening for simulation registration events (`udp_socket_server.py`), time steps sent from CDASim (`send_timestep_udp.py`), and simulated detection events sent from CDASim (`send_sim_detected_object_udp.py`). These can be used to test functiontionality associated with the **CDASimAdapter Plugin**
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