Changes for page MQTT Forward Instruction

Last modified by Kilight Cao on 2024/08/31 16:26

From version < 1.9 >

edited by Xiaoling
on 2022/05/12 16:02

To version < 1.3 >

edited by Xiaoling
on 2022/05/12 15:46

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@@ -1,8 +1,6 @@
--**~     Contents：**
++
--{{toc/}}
--
  = 1. Introduction =
  Dragino LoRa/LoRaWAN gateway support MQTT forwarding. It can forward the sensor data from LoRa network to MQTT server , and vice verse.
@@ -12,7 +12,7 @@
  This MQTT forward instruction is for below devices:
  * Firmware Version > LG02_LG08-5.3.1580178039 [[Firmware Download>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/LPS8/Firmware/Release/]]
--* LG01N, OLG01N ((% class="mark" %)**Warning**(%%): LG01-P LG01-S use another instruction: [[MQTT for LG01-P/LG01S>>url:https://wiki.dragino.com/index.php/Through_MQTT_to_upload_data]])
++* LG01N, OLG01N (Warning: LG01-P LG01-S use another instruction: [[MQTT for LG01-P/LG01S>>url:https://wiki.dragino.com/index.php/Through_MQTT_to_upload_data]])
  * LG02, OLG02
  * LG308, DLOS8
  * LPS8
@@ -22,9 +22,7 @@
  = 2. Firmware Change Log for MQTT feature =
--(((
  This instruction is wrote start from LG02_LG08-5.3.1580178039. Below is related change log since this version of firmware.
--)))
  * LG02_LG08-5.3.1580178039
  ** Initiate version
@@ -39,47 +39,33 @@
  * For Uplink: The sensor sends data to LoRa Gateway via LoRa wireless, The gateway will process these data and forward to remote MQTT Broker via Internet.
  * For Downlink: The gateway subscribe a topic in the MQTT broker, when there is update on the topic, the gateway will know and broadcast the data to Local LoRa network,
--[[image:https://wiki.dragino.com/images/thumb/4/45/MQTT_Forward_1.png/600px-MQTT_Forward_1.png||height="348" width="600"]]
++[[~[~[image:https://wiki.dragino.com/images/thumb/4/45/MQTT_Forward_1.png/600px-MQTT_Forward_1.png~|~|height="348" width="600"~]~]>>url:https://wiki.dragino.com/index.php/File:MQTT_Forward_1.png]]
  General MQTT structure
--
  == 3.2 How sensor data is forwarded ==
  In this MQTT forward feature, the key point is how the gateway process the sensor data.
--
  === 3.2.1 Upstream ===
  Assume there are two sensor nodes, their ID are Node1 ID: 6734 , Node2 ID: 7456. In the remote MQTT broker there are two topics: Topic1: /channel/765800, Topic2: /channel/367860. We can set up in the gateway to map Node1 to Topic1 and Node2 to Topic2. So when there is a sensor data from Node1, the gateway will forward the data to Topic1, when there is sensor data from Node2, the gateway will forward to Topic2.
--(((
  The data flow works as below diagram.
--)))
  [[~[~[image:https://wiki.dragino.com/images/thumb/2/2a/MQTT_Forward_2.png/600px-MQTT_Forward_2.png~|~|height="355" width="600"~]~]>>url:https://wiki.dragino.com/index.php/File:MQTT_Forward_2.png]]
--(((
  Upstream path
--)))
--(((
  Note: The sensor data can base or LoRa or other method, as long as there are data on the file /var/iot/channels. /span>
--)))
--(((
--
--)))
--
  === 3.2.2 Downstream ===
  The gateway subscribes to a topic of the remote MQTT broker topic. When there is some one publish a value on this topic. The gateway will get it and broadcast to local LoRa Network.
--(((
  Below are the data flow for downstream.
--)))
--[[image:https://wiki.dragino.com/images/thumb/3/3a/MQTT_Forward_3.png/600px-MQTT_Forward_3.png||height="368" width="600"]]
++[[~[~[image:https://wiki.dragino.com/images/thumb/3/3a/MQTT_Forward_3.png/600px-MQTT_Forward_3.png~|~|height="368" width="600"~]~]>>url:https://wiki.dragino.com/index.php/File:MQTT_Forward_3.png]]
  Downstream path
@@ -88,9 +88,7 @@
  The MQTT publish command use Macro settings to generate flexible upstream payload for MQTT publish.
--(((
--Currently the (% class="mark" %)**-t (topic)**(%%) and (% class="mark" %)**-m (message)**(%%) support Macros.
--)))
++Currently the -t (topic) and -m (message) support Macros.
  === 3.3.1 -t topic macro ===
@@ -110,7 +110,7 @@
  === 3.3.3 Example for Macro ===
--[[image:https://wiki.dragino.com/images/thumb/c/c7/MQTT_Command_9.png/600px-MQTT_Command_9.png||height="385" width="600"]]
++[[~[~[image:https://wiki.dragino.com/images/thumb/c/c7/MQTT_Command_9.png/600px-MQTT_Command_9.png~|~|height="385" width="600"~]~]>>url:https://wiki.dragino.com/index.php/File:MQTT_Command_9.png]]
  MQTT Publish configure
@@ -121,13 +121,11 @@
  When there is a LoRa sensor arrive. it will be store at the /var/iot/channels as below:
--[[image:https://wiki.dragino.com/images/thumb/c/c4/MQTT_Command_20.png/600px-MQTT_Command_20.png||height="325" width="600"]]
++[[~[~[image:https://wiki.dragino.com/images/thumb/c/c4/MQTT_Command_20.png/600px-MQTT_Command_20.png~|~|height="325" width="600"~]~]>>url:https://wiki.dragino.com/index.php/File:MQTT_Command_20.png]]
  Sensor Data
--(((
--According to above macro. Gateway will publish (% class="mark" %)**field1=22.0&field2=49.0**(%%) to topic: (% class="mark" %)**dragino-1b7060/78901/data**(%%), where 78901 is the remote channel for this node ID.
--)))
++According to above macro. Gateway will publish field1=22.0&field2=49.0 to topic: dragino-1b7060/78901/data, where 78901 is the remote channel for this node ID.
  == 3.4 Modify the MQTT to support more options ==
@@ -134,134 +134,128 @@
  The MQTT Client Utility used in Dragino is **mosquitto_pub** and **mosquitto_sub**. User can add more options to the mqtt commands. User can check the valid options by command mosquitto_pub ~-~-help. as below:
--(% class="box" %)
--(((
--root@dragino-1ec39c:~~# mosquitto_pub ~-~-help
++{{{root@dragino-1ec39c:~# mosquitto_pub --help
  mosquitto_pub is a simple mqtt client that will publish a message on a single topic and exit.
  mosquitto_pub version 1.6.4 running on libmosquitto 1.6.4.
--
++
  Usage: mosquitto_pub {[-h host] [-p port] [-u username] [-P password] -t topic | -L URL}
                       {-f file | -l | -n | -m message}
--                     [-c] [-k keepalive] [-q qos] [-r] [~-~-repeat N] [~-~-repeat-delay time]
++                     [-c] [-k keepalive] [-q qos] [-r] [--repeat N] [--repeat-delay time]
                       [-A bind_address]
                       [-i id] [-I id_prefix]
--                     [-d] [~-~-quiet]
++                     [-d] [--quiet]
                       [-M max_inflight]
                       [-u username [-P password]]
--                     [~-~-will-topic [~-~-will-payload payload] [~-~-will-qos qos] [~-~-will-retain]]
--                     [{~-~-cafile file | ~-~-capath dir} [~-~-cert file] [~-~-key file]
--                       [~-~-ciphers ciphers] [~-~-insecure]
--                       [~-~-tls-alpn protocol]
--                       [~-~-tls-engine engine] [~-~-keyform keyform] [~-~-tls-engine-kpass-sha1]]
--                     [~-~-psk hex-key ~-~-psk-identity identity [~-~-ciphers ciphers]]
--                     [~-~-proxy socks-url]
--                     [~-~-property command identifier value]
++                     [--will-topic [--will-payload payload] [--will-qos qos] [--will-retain]]
++                     [{--cafile file | --capath dir} [--cert file] [--key file]
++                       [--ciphers ciphers] [--insecure]
++                       [--tls-alpn protocol]
++                       [--tls-engine engine] [--keyform keyform] [--tls-engine-kpass-sha1]]
++                     [--psk hex-key --psk-identity identity [--ciphers ciphers]]
++                     [--proxy socks-url]
++                     [--property command identifier value]
                       [-D command identifier value]
--       mosquitto_pub ~-~-help
--
---A : bind the outgoing socket to this host/ip address. Use to control which interface
++       mosquitto_pub --help
++
++ -A : bind the outgoing socket to this host/ip address. Use to control which interface
        the client communicates over.
---d : enable debug messages.
---D : Define MQTT v5 properties. See the documentation for more details.
---f : send the contents of a file as the message.
---h : mqtt host to connect to. Defaults to localhost.
---i : id to use for this client. Defaults to mosquitto_pub_ appended with the process id.
---I : define the client id as id_prefix appended with the process id. Useful for when the
++ -d : enable debug messages.
++ -D : Define MQTT v5 properties. See the documentation for more details.
++ -f : send the contents of a file as the message.
++ -h : mqtt host to connect to. Defaults to localhost.
++ -i : id to use for this client. Defaults to mosquitto_pub_ appended with the process id.
++ -I : define the client id as id_prefix appended with the process id. Useful for when the
        broker is using the clientid_prefixes option.
---k : keep alive in seconds for this client. Defaults to 60.
---L : specify user, password, hostname, port and topic as a URL in the form:
--      mqtt(s):~/~/[username[:password]@]host[:port]/topic
---l : read messages from stdin, sending a separate message for each line.
---m : message payload to send.
---M : the maximum inflight messages for QoS 1/2..
---n : send a null (zero length) message.
---p : network port to connect to. Defaults to 1883 for plain MQTT and 8883 for MQTT over TLS.
---P : provide a password
---q : quality of service level to use for all messages. Defaults to 0.
---r : message should be retained.
---s : read message from stdin, sending the entire input as a message.
---t : mqtt topic to publish to.
---u : provide a username
---V : specify the version of the MQTT protocol to use when connecting.
++ -k : keep alive in seconds for this client. Defaults to 60.
++ -L : specify user, password, hostname, port and topic as a URL in the form:
++      mqtt(s)://[username[:password]@]host[:port]/topic
++ -l : read messages from stdin, sending a separate message for each line.
++ -m : message payload to send.
++ -M : the maximum inflight messages for QoS 1/2..
++ -n : send a null (zero length) message.
++ -p : network port to connect to. Defaults to 1883 for plain MQTT and 8883 for MQTT over TLS.
++ -P : provide a password
++ -q : quality of service level to use for all messages. Defaults to 0.
++ -r : message should be retained.
++ -s : read message from stdin, sending the entire input as a message.
++ -t : mqtt topic to publish to.
++ -u : provide a username
++ -V : specify the version of the MQTT protocol to use when connecting.
        Can be mqttv5, mqttv311 or mqttv31. Defaults to mqttv311.
--~-~-help : display this message.
--~-~-repeat : if publish mode is -f, -m, or -s, then repeat the publish N times.
--~-~-repeat-delay : if using ~-~-repeat, wait time seconds between publishes. Defaults to 0.
--~-~-quiet : (% class="mark" %)don't print error messages.
--~-~-will-payload : payload for the client Will, which is sent by the broker in case of
++ --help : display this message.
++ --repeat : if publish mode is -f, -m, or -s, then repeat the publish N times.
++ --repeat-delay : if using --repeat, wait time seconds between publishes. Defaults to 0.
++ --quiet : don't print error messages.
++ --will-payload : payload for the client Will, which is sent by the broker in case of
                    unexpected disconnection. If not given and will-topic is set, a zero
                    length message will be sent.
--~-~-will-qos : QoS level for the client Will.
--~-~-will-retain : if given, make the client Will retained.
--~-~-will-topic : the topic on which to publish the client Will.
--~-~-cafile : path to a file containing trusted CA certificates to enable encrypted
++ --will-qos : QoS level for the client Will.
++ --will-retain : if given, make the client Will retained.
++ --will-topic : the topic on which to publish the client Will.
++ --cafile : path to a file containing trusted CA certificates to enable encrypted
              communication.
--~-~-capath : path to a directory containing trusted CA certificates to enable encrypted
++ --capath : path to a directory containing trusted CA certificates to enable encrypted
              communication.
--~-~-cert : client certificate for authentication, if required by server.
--~-~-key : client private key for authentication, if required by server.
--~-~-keyform : keyfile type, can be either "pem" or "engine".
--~-~-ciphers : openssl compatible list of TLS ciphers to support.
--~-~-tls-version : TLS protocol version, can be one of tlsv1.3 tlsv1.2 or tlsv1.1.
++ --cert : client certificate for authentication, if required by server.
++ --key : client private key for authentication, if required by server.
++ --keyform : keyfile type, can be either "pem" or "engine".
++ --ciphers : openssl compatible list of TLS ciphers to support.
++ --tls-version : TLS protocol version, can be one of tlsv1.3 tlsv1.2 or tlsv1.1.
                   Defaults to tlsv1.2 if available.
--~-~-insecure : do not check that the server certificate hostname matches the remote
++ --insecure : do not check that the server certificate hostname matches the remote
                hostname. Using this option means that you cannot be sure that the
                remote host is the server you wish to connect to and so is insecure.
                Do not use this option in a production environment.
--~-~-tls-engine : If set, enables the use of a TLS engine device.
--~-~-tls-engine-kpass-sha1 : SHA1 of the key password to be used with the selected SSL engine.
--~-~-psk : pre-shared-key in hexadecimal (no leading 0x) to enable TLS-PSK mode.
--~-~-psk-identity : client identity string for TLS-PSK mode.
--~-~-proxy : SOCKS5 proxy URL of the form:
--           socks5h:~/~/[username[:password]@]hostname[:port]
++ --tls-engine : If set, enables the use of a TLS engine device.
++ --tls-engine-kpass-sha1 : SHA1 of the key password to be used with the selected SSL engine.
++ --psk : pre-shared-key in hexadecimal (no leading 0x) to enable TLS-PSK mode.
++ --psk-identity : client identity string for TLS-PSK mode.
++ --proxy : SOCKS5 proxy URL of the form:
++           socks5h://[username[:password]@]hostname[:port]
             Only "none" and "username" authentication is supported.
--
--See https:~/~/mosquitto.org/ for more information.
--)))
++
++See https://mosquitto.org/ for more information.}}}
  and modify the /usr/bin/mqtt_process.sh script, the location to change the command option is below lines:
--(% class="box" %)
--(((
--# Call MQTT Publish command
--
--# 1. Case with User, Password and Client ID present  (e.g. Azure)
++{{{# Call MQTT Publish command
++
++# 1. Case with User, Password and Client ID present  (e.g. Azure)
  if [ ! -z "$pass" ] && [ ! -z "$user" ] && [ ! -z "$clientID" ]; then
--case="1"
--mosquitto_pub $D -h $server -p $port -q $pub_qos -i $clientID -t $pub_topic -u $user -P "$pass" $C $cafile $PUB_FLAG "$mqtt_data"
--
++ case="1"
++ mosquitto_pub $D -h $server -p $port -q $pub_qos -i $clientID -t $pub_topic -u $user -P "$pass" $C $cafile $PUB_FLAG "$mqtt_data"
++
  # 2. Case with Certificate, Key and ClientID present (e.g. AWS)
  elif [ ! -z "$certfile" ] && [ ! -z "$key" ] && [ ! -z "$clientID" ]; then
--case="2"
--mosquitto_pub $D -h $server -p $port -q $pub_qos -i $clientID -t $pub_topic ~-~-cert $cert ~-~-key $key $C $cafile $PUB_FLAG "$mqtt_data"
--
++ case="2"
++ mosquitto_pub $D -h $server -p $port -q $pub_qos -i $clientID -t $pub_topic --cert $cert --key $key $C $cafile $PUB_FLAG "$mqtt_data"
++
  # 3. Case with no User, Certificate or ClientID present
  elif [ -z "$user" ] && [ -z "$certfile" ] && [ -z "$clientID" ]; then
--case="3"
--mosquitto_pub $D -h $server -p $port -q $pub_qos -t $pub_topic $PUB_FLAG "$mqtt_data"
--
++ case="3"
++ mosquitto_pub $D -h $server -p $port -q $pub_qos -t $pub_topic $PUB_FLAG "$mqtt_data"
++
  # 4. Case with no User, Certificate, but with ClientID present
  elif [ -z "$user" ] && [ -z "$certfile" ] && [ ! -z "$clientID" ]; then
--case="4"
--mosquitto_pub $D -h $server -p $port -q $pub_qos -i $clientID -t $pub_topic $PUB_FLAG "$mqtt_data"
--
++ case="4"
++ mosquitto_pub $D -h $server -p $port -q $pub_qos -i $clientID -t $pub_topic $PUB_FLAG "$mqtt_data"
++
  # 5. Case with User and ClientID present, but no Password and no Certificate present
  elif [ -z "$pass" ] && [ -z "$certfile" ] && [ ! -z "$user" ] && [ ! -z "$clientID" ]; then
--case="5"
--mosquitto_pub $D -h $server -p $port -q $pub_qos -i $clientID -t $pub_topic -u $user $PUB_FLAG "$mqtt_data"
--
++ case="5"
++ mosquitto_pub $D -h $server -p $port -q $pub_qos -i $clientID -t $pub_topic -u $user $PUB_FLAG "$mqtt_data"
++
  # 6. Case with User and Password present, but no ClientID and no Certificate present
  elif [ ! -z "$user" ] && [ ! -z "$pass" ] && [ -z "$clientID" ] && [ -z "$certfile" ]; then
--case="6"
--mosquitto_pub $D -h $server -p $port -q $pub_qos  -t $pub_topic -u $user -P "$pass" $PUB_FLAG "$mqtt_data"
--
++ case="6"
++ mosquitto_pub $D -h $server -p $port -q $pub_qos  -t $pub_topic -u $user -P "$pass" $PUB_FLAG "$mqtt_data"
++
  # 0. Else - invalid parameters, just log
  else
--case="Invalid parameters"
--logger "[IoT.MQTT]:Invalid Parameters - mosquitto_pub not called."
--fi
--)))
++ case="Invalid parameters"
++ logger "[IoT.MQTT]:Invalid Parameters - mosquitto_pub not called."
++fi}}}
  = 4. Example to communicate to a simple MQTT server =
@@ -397,6 +397,7 @@
  downstream simulation
++\\
  == 4.5 Add LoRa support to communicate with remote sensor ==
@@ -439,8 +439,7 @@
  When use test this feature, please use the version higher then : LG02_LG08~-~-build-v5.4.1593400722-20200629-1120, in this version, the upload format is changed and readable, which is easier for integration.
--
--Video Instruction:[[https:~~/~~/youtu.be/qJTY441-t90>>url:https://youtu.be/qJTY441-t90]]
++\\Video Instruction:[[https:~~/~~/youtu.be/qJTY441-t90>>url:https://youtu.be/qJTY441-t90]]
  Step 1: Refer [[Communicate with ABP End Node>>url:https://wiki.dragino.com/index.php/Communication_with_ABP_End_Node]] to know how to set up LG308 to work with LoRaWAN End node.
@@ -521,6 +521,7 @@
  [[AWS Examples>>url:https://wiki.dragino.com/index.php/MQTT_Forward_to_Amazon_AWS-IOT]]
  )))
++
  = 6. How to Debug =
  User can login the gateway's console and run **logread -f**. It will shows the output when there is packet arrive.User can see if it is correct.

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