EMQ (Erlang MQTT Broker) is a distributed, massively scalable, highly extensible MQTT message broker written in Erlang/OTP.
EMQ is fully open source and licensed under the Apache Version 2.0. EMQ implements both MQTT V3.1 and V3.1.1 protocol specifications, and supports MQTT-SN, CoAP, WebSocket, STOMP and SockJS at the same time.
EMQ provides a scalable, reliable, enterprise-grade MQTT message Hub for IoT, M2M, Smart Hardware and Mobile Messaging Applications.
The 1.0 rele 9134 ase of the EMQ broker has scaled to 1.3 million concurrent MQTT connections on a 12 Core, 32G CentOS server.
Please visit emqtt.io for more service. Follow us on Twitter: @emqtt
- Full MQTT V3.1/V3.1.1 support
- QoS0, QoS1, QoS2 Publish/Subscribe
- Session Management and Offline Messages
- Retained Message
- Last Will Message
- TCP/SSL Connection
- MQTT Over WebSocket(SSL)
- HTTP Publish API
- MQTT-SN Protocol
- STOMP protocol
- STOMP over SockJS
- $SYS/# Topics
- ClientID Authentication
- IpAddress Authentication
- Username and Password Authentication
- Access control based on IpAddress, ClientID, Username
- JWT Authentication
- LDAP Authentication/ACL
- HTTP Authentication/ACL
- MySQL Authentication/ACL
- Redis Authentication/ACL
- PostgreSQL Authentication/ACL
- MongoDB Authentication/ACL
- Cluster brokers on several nodes
- Bridge brokers locally or remotely
- mosquitto, RSMB bridge
- Extensible architecture with Hooks and Plugins
- Passed eclipse paho interoperability tests
- Local Subscription
- Shared Subscription
- Proxy Protocol V1/2
- Lua Hook and Web Hook
- LWM2M Prototol Support
The EMQ broker is cross-platform, which can be deployed on Linux, Unix, Mac, Windows and even Raspberry Pi.
Download the binary package for your platform from http://emqtt.io/downloads.
Documentation on emqtt.io/docs/v2/, docs.emqtt.com for installation and configuration guide.
The EMQ broker requires Erlang/OTP R19+ to build since 2.1 release.
git clone https://github.com/emqtt/emq-relx.git
cd emq-relx && make
cd _rel/emqttd && ./bin/emqttd console
The EMQ broker is highly extensible, with many hooks and plugins for customizing the authentication/ACL and integrating with other systems:
| Plugin | Description |
|---|---|
| emq_plugin_template | Plugin template and demo |
| emq_dashboard | Web Dashboard |
| emq_retainer | Store MQTT Retained Messages |
| emq_modules | Presence, Subscription and Rewrite Modules |
| emq_auth_username | Username/Password Authentication Plugin |
| emq_auth_clientid | ClientId Authentication Plugin |
| emq_auth_mysql | MySQL Authentication/ACL Plugin |
| emq_auth_pgsql | PostgreSQL Authentication/ACL Plugin |
| emq_auth_redis | Redis Authentication/ACL Plugin |
| emq_auth_mongo | MongoDB Authentication/ACL Plugin |
| emq_auth_http | Authentication/ACL by HTTP API |
| emq_auth_ldap | LDAP Authentication Plugin |
| emq_auth_jwt | JWT Authentication Plugin |
| emq_web_hook | Web Hook Plugin |
| emq_lua_hook | Lua Hook Plugin |
| emq_sn | MQTT-SN Protocol Plugin |
| emq_coap | CoAP Protocol Plugin |
| emq_stomp | Stomp Protocol Plugin |
| emq_lwm2m | LWM2M Prototol Plugin |
| emq_recon | Recon Plugin |
| emq_reloader | Reloader Plugin |
| emq_sockjs | SockJS(Stomp) Plugin |
- Twitter: @emqtt
- Homepage: http://emqtt.io
- Downloads: http://emqtt.io/downloads
- Documentation: http://emqtt.io/docs/v2/
- Forum: https://groups.google.com/d/forum/emqtt
- Mailing List: emqtt@googlegroups.com
- Issues: https://github.com/emqtt/emqttd/issues
- QQ Group: 12222225
The q.emqtt.com hosts a public Four-Node EMQ cluster on QingCloud:
Apache License Version 2.0