.env.example

# ──────────────────────────────────────────────────────────────────────────────
# Socket Chat – environment variables
# Copy this file to .env and fill in the values.
# NEVER commit .env to source control.
# ──────────────────────────────────────────────────────────────────────────────

# Server
NODE_ENV=development          # development | production
PORT=8000
HOST=0.0.0.0

# CORS – comma-separated list of allowed origins (use * only in dev)
CORS_ORIGINS=*

# Rate limiting
RATE_LIMIT_WINDOW_MS=900000   # 15 minutes in ms
RATE_LIMIT_MAX=200            # max requests per window per IP

# Chat constraints
MAX_MESSAGE_LENGTH=500
MAX_USERNAME_LENGTH=30
MAX_ROOM_NAME_LENGTH=30
HISTORY_SIZE=50               # messages kept in memory per room
TYPING_DEBOUNCE_MS=3000       # ms before "typing" indicator auto-hides