Move github wiki to redthedocs

docs/source/apps/index.rst

@@ -3,6 +3,7 @@ Applications
 ============
 
 .. toctree::
+   :maxdepth: 2
 
    push
    chat

docs/source/tune/benchmark_0.13.0.rst

@@ -0,0 +1,167 @@
+0.13.0 Benchmark (2015-11-08)
+=============================
+
+Benchmark with the [emqtt_benchmark](https://github.com/emqtt/emqtt_benchmark) tool.
+
+Server: 8 Core, 32G Memory CentOS6.
+
+etc/vm.args
+-----------
+
+::
+
+    ## max process numbers
+    +P 1000000
+
+    ## Sets the maximum number of simultaneously existing ports for this system
+    +Q 409600
+
+    ## max atom number
+    ## +t
+
+    ## Set the distribution buffer busy limit (dist_buf_busy_limit) in kilobytes.
+    ## Valid range is 1-2097151. Default is 1024.
+    ## +zdbbl 8192
+
+    ##-------------------------------------------------------------------------
+    ## Env
+    ##-------------------------------------------------------------------------
+
+    ## Increase number of concurrent ports/sockets, deprecated in R17
+    -env ERL_MAX_PORTS 409600
+
+    -env ERTS_MAX_PORTS 409600
+
+
+250K Subscribers on five nodes
+------------------------------
+
+Create 50K connections on each node and subscribe test/%i topics::
+
+    ./emqtt_bench_sub -h server -p 1883 -c 50000 -i 5 -t test/%i -q 1
+
+
+Publish 4K msg/sec on server
+------------------------------
+
+Publish qos1 messages at the rate of 4K(msg/sec) on the server:: 
+
+    ./emqtt_bench_pub -h localhost -c 40 -i 10 -I 10 -t test/%i -q 1
+
+Each node will receive 4k msg/sec.
+
+
+Benchmark Result
+----------------
+
+250K Connections,
+50K Topics,
+250K Subscribers,
+4K Qos1 Messages/Sec In,
+20K Qos1 Messages/Sec Out,
+12M+(bps) In, 56M+(bps) Out Traffic
+
+Consumed about 3.1G memory and 400+ CPU.
+
+
+./bin/emqttd_ctl broker
+-----------------------
+
+
+sysdescr  : Erlang MQTT Broker
+version   : 0.13.0
+uptime    : 20 minutes, 25 seconds
+datetime  : 2015-11-08 10:38:30
+
+./bin/emqttd_ctl broker stats
+-----------------------
+
+```
+clients/count       : 250040
+clients/max         : 250040
+queues/count        : 0
+queues/max          : 0
+retained/count      : 2
+retained/max        : 2
+sessions/count      : 0
+sessions/max        : 0
+subscribers/count   : 250000
+subscribers/max     : 250000
+topics/count        : 50050
+topics/max          : 50050
+```
+
+./bin/emqttd_ctl listeners
+-----------------------
+
+```
+listener on http:8083
+acceptors       : 4
+max_clients     : 64
+current_clients : 0
+shutdown_count  : []
+listener on mqtts:8883
+acceptors       : 4
+max_clients     : 512
+current_clients : 0
+shutdown_count  : []
+listener on mqtt:1883
+acceptors       : 64
+max_clients     : 1000000
+current_clients : 250040
+shutdown_count  : []
+listener on http:18083
+acceptors       : 4
+max_clients     : 512
+current_clients : 0
+shutdown_count  : []
+```
+
+./bin/emqttd_ctl vm
+-----------------------
+
+```
+cpu/load1               : 13.44
+cpu/load5               : 10.43
+cpu/load15              : 5.98
+memory/total            : 2710277048
+memory/processes        : 1420519328
+memory/processes_used   : 1419564424
+memory/system           : 1289757720
+memory/atom             : 512601
+memory/atom_used        : 486464
+memory/binary           : 380872488
+memory/code             : 13077799
+memory/ets              : 408483440
+process/limit           : 1048576
+process/count           : 500353
+io/max_fds              : 500000
+io/active_fds           : 75
+```
+
+./bin/emqttd_ctl recon node_stats
+---------------------------------
+
+```
+{[{process_count,500353},
+{run_queue,41},
+{error_logger_queue_len,0},
+{memory_total,2698242896},
+{memory_procs,1408734784},
+{memory_atoms,486706},
+{memory_bin,380825008},
+{memory_ets,408483456}],
+[{bytes_in,256851},
+{bytes_out,1202095},
+{gc_count,24423},
+{gc_words_reclaimed,4092612},
+{reductions,1850034},
+{scheduler_usage,[{1,0.46640942781698586},
+{2,0.5293768498814092},
+{3,0.441425019999723},
+{4,0.45550895378436373},
+{5,0.45318168320081786},
+{6,0.4627325387117833},
+{7,0.5144161001107628},
+{8,0.46406643808409137}]}]}
+```

docs/source/tune/etc_app_config.rst

@@ -1,2 +1,32 @@
-etc/app.config
-==============
+etc/app.config for C1000K
+=========================
+
+::
+
+    {mqtt, 1883, [
+        %% Size of acceptor pool
+        {acceptors, 64},
+
+        %% Maximum number of concurrent clients
+        {max_clients, 1000000},
+
+        %% Socket Access Control
+        {access, [{allow, all}]},
+
+        %% Connection Options
+        {connopts, [
+            %% Rate Limit. Format is 'burst, rate', Unit is KB/Sec
+            %% {rate_limit, "100,10"} %% 100K burst, 10K rate
+        ]},
+
+        %% Socket Options
+        {sockopts, [
+            %Tune buffer if hight thoughtput
+            %{recbuf, 4096},
+            %{sndbuf, 4096},
+            %{buffer, 4096},
+            %{nodelay, true},
+            {backlog, 1024}
+        ]}
+    ]},
+

docs/source/tune/etc_vm_args.rst

@@ -1,4 +1,26 @@
 
-etc/vm.args
-==============
+etc/vm.args for C1000K
+======================
+
+::
+
+    ## 12 threads/core.
+    +A 64
+
+    ## Max process numbers > connections * 2
+    ## 2M
+    +P 2097152
+
+    ## Sets the maximum number of simultaneously existing ports for this system
+    ## 1M
+    +Q 1048576
+
+    ## Increase number of concurrent ports/sockets, deprecated in R17
+    -env ERL_MAX_PORTS 1048576
+
+    -env ERTS_MAX_PORTS 1048576
+
+    ## Mnesia and SSL will create temporary ets tables
+    ## 16K
+    -env ERL_MAX_ETS_TABLES 16384
 

docs/source/tune/index.rst

@@ -1,9 +1,12 @@
+
 Tune Guide
 ----------
 
 .. toctree::
    :maxdepth: 1
 
+   linux_kernel_tuning
    etc_vm_args
    etc_app_config
+   benchmark_0.13.0
 

docs/source/tune/linux_kernel_tuning.rst

@@ -0,0 +1,175 @@
+
+Linux Kernel Tuning for C1000K concurrent connections::
+
+    # system-wide limit on max opened files for all processes
+    # sysctl -n fs.nr_open
+    # 1M
+    sysctl -w fs.file-max=1048576
+    sysctl -w fs.nr_open=1048576
+    ulimit -n 1048576
+    # Increase number of incoming connections
+    net.core.somaxconn = 65536
+
+    sysctl -w net.ipv4.tcp_mem='10000000 10000000 10000000'
+    sysctl -w net.ipv4.tcp_rmem='1024 4096 16384'
+    sysctl -w net.ipv4.tcp_wmem='1024 4096 16384'
+    sysctl -w net.core.rmem_max=16384
+    sysctl -w net.core.wmem_max=16384
+
+    net.core.rmem_max = 16777216
+    net.core.wmem_max = 16777216
+    net.core.rmem_default = 16777216
+    net.core.wmem_default = 16777216
+    net.core.optmem_max = 2048000
+    net.core.netdev_max_backlog = 50000
+
+    net.ipv4.tcp_rmem = 4096 4096 16777216
+    net.ipv4.tcp_wmem = 4096 4096 16777216
+    net.ipv4.tcp_max_syn_backlog = 30000
+    net.ipv4.tcp_max_tw_buckets = 2000000
+    net.ipv4.tcp_tw_reuse = 1
+    net.ipv4.tcp_fin_timeout = 10
+    net.ipv4.conf.all.send_redirects = 0
+    net.ipv4.conf.all.accept_redirects = 0
+    net.ipv4.conf.all.accept_source_route = 0
+    net.ipv4.tcp_slow_start_after_idle = 0
+    net.ipv4.ip_local_port_range = 8000 65535
+
+    net.netfilter.nf_conntrack_max = 1000000
+    net.netfilter.nf_conntrack_tcp_timeout_time_wait = 30
+
+    vm.min_free_kbytes = 65536
+    vm.swappiness = 0
+    vm.overcommit_memory = 1
+
+
+/etc/sysctl.conf
+----------------
+
+::
+
+  fs.file-max = 1048576
+
+
+/etc/security/limits.conf
+-------------------------
+
+::
+
+    *      soft   nofile      1048576
+    *      hard   nofile      1048576
+
+
+  ## Kernel/Network Tunings from @galvezlj
+
+  Server side:
+  ```
+  fs.file-max = 1000000
+  net.core.somaxconn = 65536
+  net.ipv4.ip_local_port_range = 500 65535
+  net.nf_conntrack_max = 1000000
+  net.netfilter.nf_conntrack_max = 1000000
+  net.ipv4.tcp_rmem = 4096 4096 16777216
+  net.ipv4.tcp_wmem = 4096 4096 16777216
+  ```
+
+  Client side:
+
+  ```
+  sysctl -w net.ipv4.ip_local_port_range="500 65535"
+  echo 1000000 > /proc/sys/fs/nr_open
+  ```
+
+  ## Kernel/Network Tunings from my benchmark server
+
+  ```
+  fs.file-max = 1000000
+
+  net.core.somaxconn = 65536
+  net.core.wmem_max = 124928
+  net.core.rmem_max = 124928
+  net.core.wmem_default = 124928
+  net.core.rmem_default = 124928
+  net.core.dev_weight = 64
+  net.core.netdev_max_backlog = 1000
+  net.core.message_cost = 5
+  net.core.message_burst = 10
+  net.core.optmem_max = 20480
+  net.core.busy_poll = 0
+  net.core.busy_read = 0
+  net.core.netdev_budget = 300
+
+  net.ipv4.tcp_timestamps = 1
+  net.ipv4.tcp_window_scaling = 1
+  net.ipv4.tcp_sack = 1
+  net.ipv4.tcp_retrans_collapse = 1
+  net.ipv4.ip_default_ttl = 64
+  net.ipv4.tcp_syn_retries = 5
+  net.ipv4.tcp_synack_retries = 5
+  net.ipv4.tcp_max_orphans = 262144
+  net.ipv4.tcp_max_tw_buckets = 262144
+  net.ipv4.ip_dynaddr = 0
+  net.ipv4.tcp_keepalive_time = 7200
+  net.ipv4.tcp_keepalive_probes = 9
+  net.ipv4.tcp_keepalive_intvl = 75
+  net.ipv4.tcp_retries1 = 3
+  net.ipv4.tcp_retries2 = 15
+  net.ipv4.tcp_fin_timeout = 60
+  net.ipv4.tcp_syncookies = 1
+  net.ipv4.tcp_tw_recycle = 0
+  net.ipv4.tcp_abort_on_overflow = 0
+  net.ipv4.tcp_max_syn_backlog = 2048
+  net.ipv4.ip_local_port_range = 32768  61000
+  net.ipv4.inet_peer_threshold = 65664
+  net.ipv4.inet_peer_minttl = 120
+  net.ipv4.inet_peer_maxttl = 600
+  net.ipv4.inet_peer_gc_mintime = 10
+  net.ipv4.inet_peer_gc_maxtime = 120
+  net.ipv4.tcp_mem = 3080640    4107520 6161280
+  net.ipv4.tcp_wmem = 4096  16384   4194304
+  net.ipv4.tcp_rmem = 4096  87380   4194304
+  net.ipv4.tcp_app_win = 31
+  net.ipv4.tcp_adv_win_scale = 2
+  net.ipv4.tcp_tw_reuse = 0
+  net.ipv4.tcp_frto = 2
+  net.ipv4.tcp_frto_response = 0
+  net.ipv4.tcp_low_latency = 0
+  net.ipv4.tcp_no_metrics_save = 0
+  net.ipv4.tcp_moderate_rcvbuf = 1
+  net.ipv4.tcp_tso_win_divisor = 3
+  net.ipv4.tcp_congestion_control = cubic
+  net.ipv4.tcp_abc = 0
+  net.ipv4.tcp_mtu_probing = 0
+  net.ipv4.tcp_base_mss = 512
+  net.ipv4.tcp_workaround_signed_windows = 0
+  net.ipv4.tcp_challenge_ack_limit = 100
+  net.ipv4.tcp_limit_output_bytes = 131072
+  net.ipv4.tcp_dma_copybreak = 4096
+  net.ipv4.tcp_slow_start_after_idle = 1
+  net.ipv4.tcp_available_congestion_control = cubic reno
+  net.ipv4.tcp_allowed_congestion_control = cubic reno
+  net.ipv4.tcp_max_ssthresh = 0
+  net.ipv4.tcp_thin_linear_timeouts = 0
+  net.ipv4.tcp_thin_dupack = 0
+  net.ipv4.tcp_min_tso_segs = 2
+  net.ipv4.udp_mem = 3080640    4107520 6161280
+  net.ipv4.udp_rmem_min = 4096
+  net.ipv4.udp_wmem_min = 4096
+  net.ipv4.conf.all.forwarding = 0
+  net.ipv4.conf.all.mc_forwarding = 0
+  net.ipv4.conf.all.accept_redirects = 1
+  net.ipv4.conf.all.secure_redirects = 1
+  net.ipv4.conf.all.shared_media = 1
+  net.ipv4.conf.all.rp_filter = 0
+  net.ipv4.conf.all.send_redirects = 1
+  net.ipv4.conf.all.src_valid_mark = 0
+  net.ipv4.conf.all.medium_id = 0
+  net.ipv4.conf.all.bootp_relay = 0
+  net.ipv4.conf.all.log_martians = 0
+  net.ipv4.conf.all.tag = 0
+
+  vm.min_free_kbytes = 67584
+  vm.swappiness = 60
+  vm.overcommit_memory = 0
+  ```
+

docs/source/user/clustering.rst

@@ -0,0 +1,61 @@
+
+Clustering
+==========
+
+Suppose we cluster two nodes on hosts:
+
+Node | Host   | IpAddress  
+-----|--------|-------------
+node1(disc_copy)| host1 | 192.168.0.10
+node2(ram_copy) | host2  | 192.168.0.20
+
+
+Configure and start 'node1'
+---------------------------
+
+configure 'etc/vm.args'::
+
+    -name emqttd@192.168.0.10
+
+If host1, host2 added to /etc/hosts of OS::
+
+    -name emqttd@host1
+
+Start node1::
+
+    ./bin/emqttd start
+
+.. NOTE:: Notice that data/mnesia/* should be removed before you start the broker with different node name.
+
+
+Configure and start 'node2'
+---------------------------
+
+Configure 'etc/vm.args'::
+
+    -name emqttd@192.168.0.20
+
+or::
+
+    -name emqttd@host2
+
+
+Then start node2::
+
+    ./bin/emqttd start
+
+Cluster two nodes
+---------------------------
+
+Run './bin/emqttd_ctl cluster' on host2::
+
+    ./bin/emqttd_ctl cluster emqttd@192.168.0.10
+
+
+Check cluster status
+---------------------------
+
+And then check clustered status on any host::
+
+    ./bin/emqttd_ctl cluster
+

docs/source/user/emqttd_init.rst

@@ -0,0 +1,74 @@
+
+/etc/init.d/emqttd
+==================
+
+::
+    #!/bin/sh
+    #
+    # emqttd       Startup script for emqttd.
+    #
+    # chkconfig: 2345 90 10
+    # description: emqttd is mqtt broker.
+
+    # source function library
+    . /etc/rc.d/init.d/functions
+
+    # export HOME=/root
+
+    start() {
+        echo "starting emqttd..."
+        cd /opt/emqttd && ./bin/emqttd start
+    }
+
+    stop() {
+        echo "stopping emqttd..."
+        cd /opt/emqttd && ./bin/emqttd stop
+    }
+
+    restart() {
+        stop
+        start
+    }
+
+    case "$1" in
+        start)
+            start
+            ;;
+        stop)
+            stop
+            ;;
+        restart)
+            restart
+            ;;
+        *)
+            echo $"Usage: $0 {start|stop}"
+            RETVAL=2
+    esac
+
+chkconfig
+---------
+
+::
+
+    chmod +x /etc/init.d/emqttd
+    chkconfig --add emqttd
+    chkconfig --list
+
+boot test on ubuntu
+-------------------
+
+::
+    service emqttd start
+
+erlexec: HOME must be set
+-------------------
+
+uncomment '# export HOME=/root' if "HOME must be set" error.
+
+
+Referrence
+---------
+
+.. `How to make unix service see environment variables?`_: http://unix.stackexchange.com/questions/44370/how-to-make-unix-service-see-environment-variables/44378#44378
+
+

docs/source/user/http.rst

@@ -2,4 +2,32 @@
 HTTP API
 ========
 
+emqttd support HTTP API to publish message from your application server to MQTT clients. For 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 API URL
+-----------
+
+::
+    HTTP POST http://host:8083/mqtt/publish
+
+
+HTTP Parameters
+---------------
+
++---------+-----------------+
+| Name    |  Description    |
++-------------------+-------+
+| client  |  ClientId       |
++-------------------+-------+
+| qos     |  QoS(0, 1, 2)   |
++-------------------+-------+
+| retain  |  Retain(0, 1)   |
++-------------------+-------+
+| topic   |  Topic          |
++-------------------+-------+
+| message |  Message        |
++-------------------+-------+
+
 

docs/source/user/index.rst

@@ -1,8 +1,8 @@
 User Guide
 ----------
 
-
 .. toctree::
+   :maxdepth: 2
 
    install
    configuration
@@ -11,5 +11,7 @@ User Guide
    http
    websocket
    admin
+   systopics
    logs
+   trace
 

docs/source/user/systopics.rst

@@ -0,0 +1,205 @@
+
+$SYS Topics
+===========
+
+$SYS Topics of broker is started with::
+
+    $SYS/brokers/${node}
+
+${node} is erlang node name of clustered brokers. For example::
+
+    $SYS/brokers/emqttd@host1/version
+    $SYS/brokers/emqttd@host2/version
+
+Broker $SYS Topics
+------------------
+
+Topic                          | Description
+-------------------------------|------------
+$SYS/brokers                   | Broker nodes
+$SYS/brokers/${node}/version   | Broker Version
+$SYS/brokers/${node}/uptime    | Broker Uptime
+$SYS/brokers/${node}/datetime  | Broker DateTime
+$SYS/brokers/${node}/sysdescr  | Broker Description
+ 
+Client $SYS Topics
+------------------
+
+Start with: $SYS/brokers/${node}/clients/
+
+Topic                 |   Payload(json)     | Description
+----------------------|---------------------|--------------- 
+${clientid}/connected | {ipaddress: "127.0.0.1", username: "test", session: false, version: 3, connack: 0, ts: 1432648482} | Publish when client connected 
+${clientid}/disconnected | {reason: "normal" | "keepalive_timeout" | "conn_closed"}
+
+Parameters of 'connected' Payload::
+
+    ipaddress: "127.0.0.1", 
+    username: "test", 
+    session: false, 
+    protocol: 3, 
+    connack: 0, 
+    ts: 1432648482
+
+Parameters of 'disconnected' Payload::
+
+    reason: normal,
+    ts: 1432648486
+
+Statistics $SYS Topics
+----------------------
+
+Start with '$SYS/brokers/${node}/stats/'
+
+Client Stats
+----------------------
+
+Topic                                | Description
+-------------------------------------|------------
+clients/count   | count of current connected clients
+clients/max     | max connected clients in the same time
+
+Session Stats
+----------------------
+
+Topic            | Description
+-----------------|------------
+sessions/count   | count of current sessions
+sessions/max     | max number of sessions
+
+Subscriber Stats
+----------------------
+
+Topic             | Description
+------------------|------------
+subscriptions/count | count of current subscriptions
+subscriptions/max   | max number of subscriptions
+
+Topic Stats
+----------------------
+
+Topic             | Description
+------------------|------------
+topics/count      | count of current topics
+topics/max        | max number of topics
+
+Queue Stats
+----------------------
+
+Topic             | Description
+------------------|------------
+queues/count      | count of current queues
+queues/max        | max number of queues
+
+
+Metrics $SYS Topics
+----------------------
+
+Start with '$SYS/brokers/${node}/metrics/'
+
+Bytes sent and received
+----------------------
+
+Topic                               | Description
+------------------------------------|------------
+bytes/received | MQTT Bytes Received since broker started
+bytes/sent     | MQTT Bytes Sent since the broker started
+
+Packets sent and received
+-------------------------
+ 
+Topic                    | Description
+-------------------------|------------
+packets/received         | MQTT Packets received
+packets/sent             | MQTT Packets sent
+packets/connect          | MQTT CONNECT Packet received
+packets/connack          | MQTT CONNACK Packet sent
+packets/publish/received | MQTT PUBLISH packets received
+packets/publish/sent     | MQTT PUBLISH packets sent
+packets/subscribe        | MQTT SUBSCRIBE Packets received
+packets/suback           | MQTT SUBACK packets sent
+packets/unsubscribe      | MQTT UNSUBSCRIBE Packets received
+packets/unsuback         | MQTT UNSUBACK Packets sent
+packets/pingreq          | MQTT PINGREQ packets received
+packets/pingresp         | MQTT PINGRESP Packets sent
+packets/disconnect       | MQTT DISCONNECT Packets received
+
+Messages sent and received
+---------------------------
+
+Topic                                  | Description
+---------------------------------------|-------------------
+messages/received | Messages Received
+messages/sent     | Messages Sent
+messages/retained | Messages Retained
+messages/stored   | TODO: Messages Stored
+messages/dropped  | Messages Dropped
+
+Alarm Topics
+---------------------------
+
+Start with '$SYS/brokers/${node}/alarms/'
+
+Topic            | Description
+-----------------|-------------------
+${alarmId}/alert | New Alarm
+${alarmId}/clear | Clear Alarm
+
+Logs
+---------------------------
+
+'$SYS/brokers/${node}/logs/${severity}'
+
+Severity   |  Description
+-----------|-------------------
+debug      | Debug Log
+info       | Info Log
+notice     | Notice Log
+warning    | Warning Log
+error      | Error Log
+critical   | Critical Log
+
+Sysmon
+---------------------------
+
+Start with '$SYS/brokers/${node}/sysmon/'
+
+Topic            | Description
+-----------------|-------------------
+long_gc          | Long GC Warning
+long_schedule    | Long Schedule
+large_heap       | Large Heap Warning
+busy_port        | Busy Port Warning
+busy_dist_port   | Busy Dist Port
+
+Logs(TODO)
+---------------------------
+
+'$SYS/brokers/${node}/log/${severity}'
+
+Severity    | Description
+------------|-------------------
+debug       | Debug
+info        | Info Log
+notice      | Notice Log
+warning     | Warning Log
+error       | Error Log
+critical    | Critical Log
+alert       | Alert Log
+
+VM Load Topics(TODO)
+---------------------------
+
+Start with '$SYS/brokers/${node}/vm/'
+
+Topic            | Description
+-----------------|-------------------
+memory/*         | TODO
+cpu/*            | TODO
+processes/*      | TODO
+
+Sys Interval
+---------------------------
+
+sys_interval: 1 minute default
+

docs/source/user/trace.rst

@@ -0,0 +1,37 @@
+
+emqttd could trace packets received/sent from/to specific client, or trace publish/subscribe to specific topic.
+
+emqttd use lager:trace_file api and write trace log to file.
+
+TODO: NOTICE 
+
+Trace client
+-------------
+
+
+```
+./bin/emqttd_ctl trace client "ClientId" "trace_clientid.log"
+```
+
+Trace topic
+-------------
+
+```
+./bin/emqttd_ctl trace topic "Topic" "trace_topic.log"
+```
+
+Stop Trace
+-------------
+
+```
+./bin/emqttd_ctl trace client "ClientId" off
+./bin/emqttd_ctl trace topic "Topic" off
+```
+
+Lookup Traces
+-------------
+
+```
+./bin/emqttd_ctl trace list
+```
+

docs/source/user/websocket.rst

@@ -1,5 +1,20 @@
 
-MQTT Over WebSocket
-===================
+WebSocket
+=========
+
+emqttd supports MQTT over WebSocket(SSL).
+
+URI
+----
+
+::
+    ws(s)://host:8083/mqtt 
+
+Sec-WebSocket-Protocol
+----------------------
+
+::
+    'mqttv3.1', 'mqttv3.1.1' 
+
 
 

src/emqttd.app.src

@@ -13,4 +13,3 @@
   {mod, {emqttd_app, []}},
   {env, []}
  ]}.
-