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https://www.tsingfun.com/it/tech/1054.html 

分析系统哪个环节最耗时(Where Slow) - 更多技术 - 清泛网 - 专注C/C++及内核技术

...节最耗时? Where Slow 判断原则按上图所示: 如果 TCP 握手或 ACK 耗时长,那么说明网络慢。 如果请求耗时长,那么说明客户端慢。 如果响应耗时长,那么说明服务端慢。 实战抓包按下图所示: Package 对应结果依...
https://bbs.tsingfun.com/thread-585-1-1.html 

Sql server默认的端口是多少?如何开启远程连接? - 爬虫/数据库 - 清泛IT...

默认是1433,可以在配置管理器中查看: 需要开放1433端口,可以参考《Windows、Linux开放指定端口》。 另外,开启远程连接还需要启用TCP/IP,然后重启服务,步骤如下:
https://www.fun123.cn/reference/extensions/ 

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...
https://bbs.tsingfun.com/thread-1622-1-1.html 

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...
https://bbs.tsingfun.com/thread-1722-1-1.html 

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...
https://www.fun123.cn/reference/iot/MQTT.html 

App Inventor 2 UrsPahoMqttClient 拓展 - 物联网轻量级MQTT协议 · App Inventor 2 中文网

... 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...
https://bbs.tsingfun.com/thread-2523-1-1.html 

app 息屏后连接会断开,需要深入研究一下 - 用户反馈 - 清泛IT社区,为创新赋能!

如题,tcp,蓝牙,mqtt 等连接都会断开。 有办法避免吗? 重连策略有效解决吗?
https://stackoverflow.com/ques... 

When to use actors instead of messaging solutions such as WebSphere MQ or Tibco Rendezvous?

... 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...
https://stackoverflow.com/ques... 

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...
https://stackoverflow.com/ques... 

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...