mqtt

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在centos上搭建mqtt服务，主要是用到mosquitto消息代理服务软件： 我的linux版本为centos7 1、安装软件 按照如下命令安装： yum install gcc-c++ yum install cmake yum install openssl-devel 新建data文件夹存放软件，下载mosquitto版本，并解压，命令如下： mkdir data cd data wget http://mosquitto.org/files/source/mosquitto-1.4.10.tar.gz tar -xzvf mosquitto-1.4.10.tar.gz 安装c-areas： wget http://c-ares.haxx.se/download/c-ares-1.10.0.tar.gz tar xvf c-ares-1.10.0.tar.gz cd c-ares-1.10.0 ./configure make sudo make install 安装lib-uuid： yum install libuuid-devel 安装libwebsockets： wget https://github.com/warmcat/libwebsockets/archive/v1.3-chrome37-firefox30.tar.gz tar zxvf v1.3

I have installed mosquito broker on my mac using brew install mosquitto . Normally I don't give any commands to start the mosquitto server. It is started automatically when I switch on my mac. I have verified that it is running by using the command ps -ef | grep mosquitto , which gives the following output 501 209 153 0 2:20PM ?? 0:06.93/usr/local/opt/mosquitto/sbin/mosquitto -c /usr/local/etc/mosquitto/mosquitto.conf 501 2559 1007 0 10:36AM ttys001 0:00.00 grep mosquitto 501 865 815 0 2:32PM ttys003 0:00.86 mosquitto_sub -h 127.0.0.1 -t esb.test2 Then I stopped the server by killing the

How can we use mqtt protocol with kafka as a message broker? The clients(android/ios/desktop java apps etc) will be producing and consuming messages using mqtt phao client side libraries which are available in different languages using kafka as a message broker. Any advice? You can use a Kafka source connector which will stream data from an MQTT broker like Mosquitto into a Kafka cluster. See https://github.com/evokly/kafka-connect-mqtt The simplest way to run the connector is in standalone mode, where a single instance will be running on the Kafka cluster on a single node. You can also run it

Does anybody know where I can get some example MQTT client Go (golang) code that does both publish and subscribe in an infinite loop ? I am messaging with a Mosquitto broker running on MacOs. In more detail... Get a message from the network (a topic) Compute something based on that message Send the result of the computation back to the network (topic) Here is the code I am using: package main import ( "fmt" MQTT "github.com/eclipse/paho.mqtt.golang" "os" "time" ) var knt int var f MQTT.MessageHandler = func(client MQTT.Client, msg MQTT.Message) { fmt.Printf("MSG: %s\n", msg.Payload()) text:=

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm trying to consume messages from RabbitMQ in Spark Streaming following this answer: https://stackoverflow.com/a/38172737/1344854 . I'm failing with IllegalArgumentException and I don't know why. 6/09/05 13:23:22 ERROR ReceiverTracker: Deregistered receiver for stream 0: Error starting receiver 0 - java.lang.IllegalArgumentException: ssl://user:password@bunny.cloudamqp.com:8883/vhost at org.eclipse.paho.client.mqttv3.MqttConnectOptions.validateURI(MqttConnectOptions.java:458) at org.eclipse.paho.client.mqttv3.MqttAsyncClient.<init>

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have been trying to connect my android application to AWS IoT portal. I have created an IAM account, which has a username and password. I have gone through the documentation but I could not see any proper guideline. I read somewhere that I can access the IoT devices through IAM/Cognito/using a certificate. Since I am an Android user I can't(I don't want to) use a device certificate. Can I use my IAM credentials to access my AWS IoT devices? I have downloaded all sample application and I could not find any working code. Or could someone

Wanted to understand the fundamental reasons for push-notification like Google Cloud Messaging (earlier called Google Cloud to Device Messaging) being more battery friendly, for cloud <--> device communication ? In my view, the alternative technologies involve "polling" (over TCP/IP) while keeping the connection in CONNECTED state, using keep-alives. Or is there something better ? My limited undertanding of GCM is that, it also uses TCP/IP and keepalives, but the client never polls the server for status. Instead the server informs the client about an incoming message, and applications who