eMQTTD is a clusterable, massively scalable, fault-tolerant and extensible MQTT V3.1/V3.1.1 broker written in Erlang/OTP.
eMQTTD support MQTT V3.1/V3.1.1 Protocol Specification.
eMQTTD requires Erlang R17+.
Benchmark 0.5.4-alpha on a ubuntu/14.04 server with 8 cores, 32G memory from QingCloud:
200K Connections, 200K Topics, 20K Messages/sec, 20Mbps In/Out with 7G Memory, 40%CPU/core
eMQTTD still cannot not handle massive retained messages.
Full MQTT V3.1.1 Support
Both V3.1.1 and V3.1 protocol support
QoS0, QoS1, QoS2 Publish and Subscribe
Session Management and Offline Messages
Retained Messages
TCP/SSL connection support
$SYS/borkers/# support
Passed eclipse paho interoperability tests
Massive Connections Clients Support
Cluster brokers on servers or cloud hosts
Bridge brokers locally or remotelly
$ git clone git://github.com/emqtt/emqttd.git
$ cd emqttd
$ make && make dist
$ cd rel/emqttd
$ ./bin/emqttd console
cp -R rel/emqttd $INSTALL_DIR
cd $INSTALL_DIR/emqttd
./bin/emqttd start
./bin/emqttd stop
{emqttd, [
{auth, {anonymous, []}}, %internal, anonymous
{listen, [
{mqtt, 1883, [
{acceptors, 4},
{max_clients, 1024}
]},
{mqtts, 8883, [
{acceptors, 4},
{max_clients, 1024},
%{cacertfile, "etc/ssl/cacert.pem"},
{ssl, [{certfile, "etc/ssl.crt"},
{keyfile, "etc/ssl.key"}]}
]},
{http, 8083, [
{acceptors, 1},
{max_clients, 512}
]}
]}
]}
-name emqttd@127.0.0.1
-setcookie emqtt
When nodes clustered, vm.args should be configured as below:
-name emqttd@host1
Suppose we cluster two nodes on 'host1', 'host2', Steps:
on 'host1':
./bin/emqttd start
on 'host2':
./bin/emqttd start
./bin/emqttd_ctl cluster emqttd@host1
Run './bin/emqttd_ctl cluster' on 'host1' or 'host2' to check cluster nodes.
eMQTTD support http to publish message.
Example:
curl -v --basic -u user:passwd -d "qos=1&retain=0&topic=/a/b/c&message=hello from http..." -k http://localhost:8083/mqtt/publish
HTTP POST http://host:8083/mqtt/publish
| Name | Description |
|---|---|
| qos | QoS(0, 1, 2) |
| retain | Retain(0, 1) |
| topic | Topic |
| message | Message |
The MIT License (MIT)
feng at emqtt.io
@hejin1026 (260495915 at qq.com)
@desoulter (assoulter123 at gmail.com)