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App Inventor 2 拓展参考文档 · App Inventor 2 中文网
...展:轻量级物联网传输协议
【连接】ClientSocket 拓展:TCP/IP传输协议
【WIFI】TaifunWiFi 拓展:手机WiFi连接管理
【蓝牙】BlueToothLE 拓展:低功耗蓝牙(BLE) Iot 专题
【UI】NotificatioStyle 拓展:个性化通知栏样式
【UI】WordCloud 拓...
MQTT相关知识研究笔记 - 创客硬件开发 - 清泛IT社区,为创新赋能!
...过于依赖他们的硬件),巴法云(技术纯粹一些,还支持TCP长连接),阿里云(企业版收费,可免费试用,步骤复杂),华为云(暂未研究)。
国外的平台:
HiveMQ公共测试:https://www.mqtt-dashboard.com/
EMQX:broker.emqx.io
4...
AppInventor2如何通过socket给网络发16进制的数据? - App应用开发 - 清泛I...
...能发ASCLL码?没办法收发HEX,蓝牙组件的有写字节功能,TCP网络组件没有。
答:
发送文本消息时,hexaStringMode设为 false;发送16制消息时,hexaStringMode设为 true,例如:0x012 —> “303132” 字符串发送,接收的数据也是16进...
【持续更新】App Inventor 2 中文拓展一览 - App Inventor 2 中文网 - 清泛...
...)等图片格式的扩展
通信
【连接】ClientSocket 拓展:TCP/IP传输协议
【WIFI】TaifunWiFi 拓展:手机WiFi连接管理
【蓝牙】BlueToothLE 拓展:低功耗蓝牙(BLE) Iot 专题
【FTP】App Inventor 2 FTP 上传下载全方案总结
【MD5、密码安全】Enc...
App Inventor 2 UrsPahoMqttClient 拓展 - 物联网轻量级MQTT协议 · App Inventor 2 中文网
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MQTT 发明于 1999 年,为物联网设计的轻量级协议,基于TCP协议实现。
MQTT协议文档:https://mqtt.org/
MQTT服务质量(QoS):3个等级
QoS0:最低质量等级,最多发送一次消息,在消息发出后,接收者不会发送应答,发送者也不...
App Inventor 2 MQTT拓展入门(保姆级教程) · App Inventor 2 中文网
...自己搭建。
账号注册请自行完成,如果看到的是TCP云,请切换到MQTT云:
输入名称(例如:APPMQTT),新建一个订阅主题:
MQTT客户端测试工具:https://mqttx.app/zh
App设计及代码
...
App Inventor 2 MQTT拓展入门(保姆级教程) · App Inventor 2 中文网
...里以 bemfa.com 为例,账号注册请自行完成,如果看到的是TCP云,请切换到MQTT云:
输入名称(例如:APPMQTT),新建一个订阅主题:
MQTT客户端测试工具,下载地址:https://mqttx.app/zh/downloads
启动MQTTX客户...
When to use actors instead of messaging solutions such as WebSphere MQ or Tibco Rendezvous?
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Akka-Camel would be a better example than ZeroMQ - ZeroMQ is a direct tcp to tcp communication (hence zero - there is no message queue).
With AkkaCamel you can abstract away the queue and produce/consume messages direct from an actor without any code to deal with the message queue message push...
How to stop and restart memcached server?
... is currently runing:
sudo ps -e | grep memcached
And you can check the TCP or UDP ports if something (e.g. Memcache) is listening to it:
netstat -ap | grep TheChosenPort#
netstat -ap | grep 11211
For some Linuxes you need to change your commands like:
sudo /etc/init.d/memcached start
sudo /e...
How do I do a HTTP GET in Java? [duplicate]
...
Technically you could do it with a straight TCP socket. I wouldn't recommend it however. I would highly recommend you use Apache HttpClient instead. In its simplest form:
GetMethod get = new GetMethod("http://httpcomponents.apache.org");
// execute method and handle a...