Add production-ready Caddy integration with wildcard certificates
- Document complete Caddy + mcmqtt stack for enterprise deployment - Show wildcard certificate management with Cloudflare DNS challenge - Add dynamic hostname routing: broker-id.mqtt.domain.com patterns - Include Docker Compose configuration with Caddy labels - Demonstrate multi-tenant, geographic, and service-specific routing - Show infrastructure-as-code: 7 traditional steps -> 1 tool call - Add auto-scaling with automatic certificate and routing management - Transform mcmqtt from development tool to production infrastructure
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README.md
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README.md
@ -1037,6 +1037,349 @@ Think of mcmqtt as a **message bus vending machine**:
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**No long-term commitments, no infrastructure overhead, just instant messaging infrastructure whenever you need it!**
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## 🔒 Production-Ready: Caddy + mcmqtt = Instant Secure Infrastructure
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**Combine mcmqtt with Caddy for automatic HTTPS, reverse proxy, and production-grade security!**
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### 🚀 Auto-HTTPS MQTT Brokers
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**The Ultimate Combo:**
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```bash
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# 1. Spawn mcmqtt broker with WebSocket support
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{
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"tool": "mqtt_spawn_broker",
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"arguments": {
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"name": "production-api-broker",
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"websocket_port": 8083,
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"auth_required": true,
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"username": "api_client",
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"password": "secure_2025_prod"
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}
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}
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# 2. Caddy auto-configures HTTPS proxy (via docker labels)
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# Result: wss://mqtt-api.yourdomain.com with auto-renewed Let's Encrypt certs!
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```
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**Caddyfile Configuration:**
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```caddyfile
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# Automatic HTTPS for MQTT WebSocket endpoints
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mqtt-{subdomain}.yourdomain.com {
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reverse_proxy /mqtt/* localhost:8083
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# Auto-generated Let's Encrypt certificates
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tls {
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on_demand
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}
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# WebSocket upgrade support
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@websocket {
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header Connection *Upgrade*
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header Upgrade websocket
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}
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reverse_proxy @websocket localhost:8083
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}
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```
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### 🏗️ Enterprise Deployment Patterns
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**1. Multi-Tenant SaaS Platform**
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```bash
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# Customer onboarding triggers secure broker
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{
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"tool": "mqtt_spawn_broker",
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"arguments": {
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"name": "customer-${TENANT_ID}",
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"websocket_port": 0, # Auto-assign
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"auth_required": true,
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"max_connections": 1000
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}
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}
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# Caddy automatically creates: wss://customer-123.mqtt.yourapp.com
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# Instant secure messaging for new customer with auto-HTTPS
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```
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**2. API Gateway with MQTT Backend**
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```bash
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# API endpoint needs real-time coordination
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{
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"tool": "mqtt_spawn_broker",
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"arguments": {
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"name": "api-coordination-${API_VERSION}",
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"websocket_port": 8084,
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"max_connections": 5000
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}
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}
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# Caddy routes: api.yourapp.com/realtime/* -> secure MQTT broker
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# Zero infrastructure setup, production-ready in seconds
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```
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**3. Microservice Event Bus**
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```bash
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# Deploy new microservice cluster
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{
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"tool": "mqtt_spawn_broker",
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"arguments": {
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"name": "events-${DEPLOYMENT_ID}",
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"port": 1883, # Standard MQTT
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"websocket_port": 8883, # Secure WebSocket
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"auth_required": true
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}
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}
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# Caddy provides:
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# - MQTT over TLS: mqtts://events.internal.yourapp.com:8883
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# - WebSocket Secure: wss://events.yourapp.com/ws
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# - Automatic certificate management
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```
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**4. IoT Device Fleet Management**
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```bash
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# New device fleet deployment
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{
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"tool": "mqtt_spawn_broker",
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"arguments": {
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"name": "iot-fleet-${REGION}-${DEPLOYMENT}",
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"port": 8883,
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"websocket_port": 9001,
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"auth_required": true,
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"max_connections": 10000
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}
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}
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# Caddy creates: iot-fleet-us-west.yourapp.com
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# Devices get automatic HTTPS, load balancing, DDoS protection
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```
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### 🔧 Docker Compose Integration
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**Complete Stack with Wildcard Certificates:**
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```yaml
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# docker-compose.yml
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services:
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mcmqtt:
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image: python:3.11-slim
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command: uvx mcmqtt --transport http --port 3000
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volumes:
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- /var/run/docker.sock:/var/run/docker.sock
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networks:
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- caddy
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labels:
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# Dynamic hostname routing with wildcard cert
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caddy: "*.mqtt.yourdomain.com"
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caddy.tls: "*.yourdomain.com"
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caddy.tls.dns: cloudflare
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caddy.reverse_proxy: "{{upstreams 3000}}"
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# Route based on broker ID in hostname
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caddy.handle_path: "/broker/*"
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caddy.handle_path.reverse_proxy: "localhost:{dynamic_port}"
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caddy:
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image: caddy:2-alpine
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ports:
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- "80:80"
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- "443:443"
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volumes:
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- caddy_data:/data
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- caddy_config:/config
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- ./Caddyfile:/etc/caddy/Caddyfile
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networks:
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- caddy
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environment:
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- CLOUDFLARE_API_TOKEN=${CLOUDFLARE_TOKEN}
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labels:
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caddy_controlled_server: ""
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networks:
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caddy:
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external: true
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volumes:
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caddy_data:
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caddy_config:
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```
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**Advanced Caddyfile with Wildcard DNS:**
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```caddyfile
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# Global options for wildcard certificate management
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{
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# Cloudflare DNS challenge for wildcard certs
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acme_dns cloudflare {env.CLOUDFLARE_API_TOKEN}
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}
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# Wildcard certificate covers all subdomains
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*.mqtt.yourdomain.com {
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# Extract broker ID from hostname
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@broker_route {
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host_regexp broker (.+)\.mqtt\.yourdomain\.com$
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}
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# Dynamic routing based on broker registry
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handle @broker_route {
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# Query mcmqtt API for broker port mapping
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reverse_proxy {
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to localhost:3000
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header_up X-Broker-ID {re.broker.1}
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header_up X-Original-Host {host}
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}
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}
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# WebSocket upgrade support for all brokers
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@websocket {
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header Connection *Upgrade*
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header Upgrade websocket
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}
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handle @websocket {
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# mcmqtt resolves broker ID to actual port
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reverse_proxy localhost:3000 {
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header_up X-Websocket-Broker {re.broker.1}
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}
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}
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# Default route to mcmqtt control API
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handle {
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reverse_proxy localhost:3000
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}
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# Automatic certificate for *.mqtt.yourdomain.com
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tls {
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dns cloudflare {env.CLOUDFLARE_API_TOKEN}
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wildcard
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}
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}
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# Management interface
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mqtt-admin.yourdomain.com {
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reverse_proxy localhost:3000
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# Optional: Basic auth for admin interface
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basicauth {
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admin $2a$14$hashed_password_here
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}
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}
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```
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### 🌐 Dynamic Hostname Routing Examples
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**Wildcard Certificate Magic:**
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```bash
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# Spawn broker with custom subdomain
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{
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"tool": "mqtt_spawn_broker",
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"arguments": {
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"name": "customer-acme-prod",
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"websocket_port": 8090,
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"auth_required": true
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}
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}
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# Caddy automatically routes:
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# wss://customer-acme-prod.mqtt.yourdomain.com -> localhost:8090
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# Certificate: *.mqtt.yourdomain.com (already issued!)
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```
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**Real-World Examples:**
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```bash
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# Multi-tenant routing with single wildcard cert
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tenant-123.mqtt.yourapp.com -> Broker for tenant 123
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api-v2.mqtt.yourapp.com -> API version 2 coordination
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game-lobby-456.mqtt.yourapp.com -> Gaming session broker
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dev-feature-x.mqtt.yourapp.com -> Development environment
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test-suite-789.mqtt.yourapp.com -> Isolated testing broker
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# ALL covered by single *.mqtt.yourapp.com certificate!
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```
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**Advanced DNS Patterns:**
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```bash
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# Environment-based routing
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staging.mqtt.yourapp.com -> Staging brokers
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prod.mqtt.yourapp.com -> Production brokers
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dev.mqtt.yourapp.com -> Development brokers
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# Geographic routing
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us-east.mqtt.yourapp.com -> US East brokers
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eu-west.mqtt.yourapp.com -> EU West brokers
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asia.mqtt.yourapp.com -> Asia Pacific brokers
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# Service-specific routing
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auth.mqtt.yourapp.com -> Authentication service broker
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payments.mqtt.yourapp.com -> Payment processing broker
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analytics.mqtt.yourapp.com -> Analytics coordination broker
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```
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### 🌟 Auto-Scaling MQTT Infrastructure
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**Dynamic Broker Provisioning with Hostname Assignment:**
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```bash
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# Load balancer detects high traffic
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# Automatically spawns additional brokers
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{
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"tool": "mqtt_spawn_broker",
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"arguments": {
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"name": "autoscale-broker-${TIMESTAMP}",
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"websocket_port": 0,
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"max_connections": 2000
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}
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}
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# Caddy automatically:
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# 1. Issues Let's Encrypt certificate
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# 2. Adds broker to load balancer pool
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# 3. Routes traffic across all brokers
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# 4. Monitors health and removes failed brokers
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```
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### 🔐 Security Features
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**Production Security Stack:**
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- **Auto-HTTPS**: Let's Encrypt certificates via Caddy
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- **Authentication**: Built-in MQTT auth with configurable credentials
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- **Network Isolation**: Docker networks with controlled access
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- **Rate Limiting**: Caddy rate limiting and DDoS protection
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- **Health Monitoring**: Automatic broker health checks
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- **Log Aggregation**: Centralized logging via Caddy
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### 📊 Monitoring & Observability
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**Real-Time Infrastructure Monitoring:**
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```bash
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# Monitor all spawned brokers
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{
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"tool": "mqtt_list_brokers",
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"arguments": {
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"running_only": true
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}
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}
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# Caddy metrics endpoint provides:
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# - Certificate expiration monitoring
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# - Request/response metrics
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# - WebSocket connection stats
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# - Automatic alerting on failures
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```
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### 🎯 The Infrastructure-as-Code Revolution
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**Before: Traditional Setup**
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1. Provision servers 🖥️
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2. Install MQTT broker 📦
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3. Configure networking 🌐
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4. Set up SSL certificates 🔐
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5. Configure load balancer ⚖️
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6. Set up monitoring 📊
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7. Manage updates & patches 🔄
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**After: mcmqtt + Caddy**
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1. Call `mqtt_spawn_broker` tool ⚡
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2. **Production infrastructure running with auto-HTTPS!** 🎉
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**Result**: **Enterprise-grade MQTT infrastructure in under 30 seconds** with automatic security, scaling, and certificate management!
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## 🔍 Common AI Model Challenges mcmqtt Solves
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### "How can I coordinate multiple AI agents working on the same task?"
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