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.env file reference

The application uses the file .env to be able to expose parameters easily modifiable by users that will affect the whole application.

Here is a detailed list of all the different variables you can use, and what they do

Example env​

GAMA_WS_PORT=1000
GAMA_IP_ADDRESS=localhost

HEADSET_WS_PORT=8080
MONITOR_WS_PORT=8001

WEB_APPLICATION_HOST=0.0.0.0
WEB_APPLICATION_PORT=8000
VERBOSE=true
EXTRA_VERBOSE = false

LEARNING_PACKAGE_PATH="./learning-packages"
EXTRA_LEARNING_PACKAGE_PATH="/uncommment/and/set/another/path/to/check"


HEADSETS_IP="192.168.68.15;192.168.68.103;192.168.68.104;192.168.68.110"
ENV_MAX_ELEMENTS = 4
AGGRESSIVE_DISCONNECT=false

SCRCPY_FORCE_H265 = true
Logging Settings​

ENV_VERBOSE

  • Type: Boolean
  • Default: false
  • Required: No
  • Description: Enables basic logging output to console. Shows initialization, connection events, and major state changes.
  • Valid Values: true, false
  • Performance Impact: Minimal
  • Security Considerations: May expose internal state information

ENV_EXTRA_VERBOSE

  • Type: Boolean
  • Default: false
  • Required: No
  • Description: Enables detailed diagnostic logging including all WebSocket messages, ADB commands, and internal state transitions. Use only for debugging.
  • Valid Values: true, false
  • Performance Impact: Moderate (increased I/O operations)
  • Security Considerations: Logs may contain sensitive connection details

Headset Management​

ENV_AGGRESSIVE_DISCONNECT​

  • Type: Boolean
  • Default: false
  • Required: No
  • Description: Controls disconnect button behavior. When enabled, disconnected headsets are immediately removed from the platform. When disabled, headsets remain visible with "disconnected" status, allowing for reconnection.
  • Valid Values: true, false
  • Use Cases: Enable for production environments; disable for development
  • Recommendation: Keep disabled to handle temporary network interruptions gracefully

HEADSETS_IPS​

  • Type: String (semicolon-separated IP addresses)
  • Default: None
  • Required: No (if omitted, automatic network scan is performed)
  • Description: Specifies known IP addresses of VR headsets. Port numbers are automatically detected using network scanning.
  • Format: IP1;IP2;IP3 (no spaces)
  • Standard Configuration: 192.168.68.101;192.168.68.102;192.168.68.103;192.168.68.104;192.168.68.105;192.168.68.106
  • Port Detection: Automatically scans common ADB ports (5555 by default, which is open on all headsets or all ports on range 30000-49999 if 5555 is not opened)
  • Performance Note: Providing IPs speeds up connection time significantly compared to network scanning
  • IP Pattern: Headsets typically use 192.168.68.10x pattern where x = 1-6

ENV_MAX_ELEMENTS

  • Type: Integer
  • Default: 6
  • Required: No
  • Description: Maximum number of headset display panels shown on mirror pages. If fewer headsets are connected, placeholders fill remaining slots.
  • Valid Range: 0-6
  • UI Impact: Affects layout grid dimensions
  • Note: Does not limit actual headset connections, only display slots
Video Streaming​

ENV_FORCE_H265

  • Type: Boolean
  • Default: false on Windows/Linux, true on macOS
  • Required: No
  • Description: Forces H.265 (HEVC) video encoding instead of default H.264. H.265 provides better compression and quality but may have compatibility issues on some devices.
  • Valid Values: true, false
  • Benefits of H.265: Higher resolution, better framerate, improved stability
  • Drawbacks: Requires hardware decoder support, higher CPU usage
  • Platform Behavior: Automatically enabled on macOS (Darwin OS)
GAMA Server Connection​

GAMA_IP_ADDRESS

  • Type: String (IP address or hostname)
  • Default: localhost
  • Required: No (defaults to localhost if not specified)
  • Description: IP address or hostname of the GAMA simulation server
  • Valid Values: Valid IPv4 address, localhost, or resolvable hostname
  • Examples: localhost, 192.168.68.50
  • Network Requirement: Must be reachable from application host

GAMA_WS_PORT

  • Type: Integer
  • Default: 1000
  • Required: No (defaults to 1000 if not specified)
  • Description: WebSocket port exposed by GAMA server. Verify in GAMA: Support → Preferences → Server
  • Valid Range: 1024-65535 (above reserved port range)
  • Common Values: 1000, 6868
  • Firewall: Ensure port is not blocked
Web Application Network​

WEB_APPLICATION_HOST

  • Type: String (IP address or hostname)
  • Default: localhost
  • Required: No (defaults to localhost if not specified)
  • Description: IP address on which the application creates WebSocket servers for video streaming (ScrcpyServer) and monitoring (MonitorServer)
  • Valid Values: 0.0.0.0 (all interfaces), specific IP, localhost
  • Use Cases:
    • localhost: Local development only (default)
    • 0.0.0.0: Expose to all network interfaces
    • Specific IP: Bind to particular network interface
  • Security Warning: Using 0.0.0.0 exposes services to network

WEB_APPLICATION_PORT

  • Type: Integer
  • Default: 8000
  • Required: No (defaults to 8000 if not specified)
  • Description: Port number for application WebSocket server
  • Valid Range: 1024-65535
  • Conflict Avoidance: Ensure no other services use this port
Simulation Packages​

LEARNING_PACKAGE_PATH

  • Type: String (file system path)
  • Default: None
  • Required: Yes
  • Description: Primary directory containing GAMA simulation models with settings.json configuration files
  • Path Type: Absolute or relative to application root
  • Example: ./learning-packages, /opt/simulations/main
  • Structure Requirements: Each simulation must have settings.json in root folder

EXTRA_LEARNING_PACKAGE_PATH

  • Type: String (file system path)
  • Default: None
  • Required: No
  • Description: Additional directory for GAMA simulation models, scanned in addition to primary path
  • Use Case: provide an additional folder as a source to discover GAMA simulations