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MQTT物联网协议完全实践指南 · App Inventor 2 中文网
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MQTT协议深度解析
1. 协议架构与通信模式
2. 消息质量等级（QoS）详解
3. 主题设计与最佳实践
完整实战项目：智能温室控制系统
项目概述
系统架构设计
1. 主题设计策略
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How can I access my localhost from my Android device?
...to laptop
Enable USB Debugging on mobile device
On laptop, run adb reverse tcp:4000 tcp:4000
Use your custom port number instead of 4000
Now, on the mobile device, you can navigate to http://localhost:4000/, and it will actually connect to the laptop, not the mobile device
See instructions here...
TransactionScope automatically escalating to MSDTC on some machines?
...s are not open at the same time, which would result in multiple "physical" TCP connections and thus require escalation.
I see some of your developers have SQL Server 2005 and others have SQL Server 2008. Are you sure you have correctly identified which ones are escalating and which not?
The most o...
微博为什么限制140字(附短信70字限制考) - 闲聊区 - 清泛IT社区，为创新赋能！
...嗒啪嗒的敲着打字机的键盘，随意的打着一些句子。这位通信专家一边打一边数着字母、数字、标点和空格的数目，最终发现160个字符足够表现一个简单的意思。当时Hellebrand正在参与一个允许手机发送及显示文字消息的标准制...
Why use deflate instead of gzip for text files served by Apache?
..., but a different algorithm for headers and checksum.
Now, the underlying TCP packets are already pretty reliable, so the issue here is not Adler 32 vs CRC-32 that GZIP uses.
Turns out many browsers over the years implemented an incorrect deflate algorithm. Instead of expecting the zlib header i...
微博为什么限制140字(附短信70字限制考) - 创意 - 清泛网 - 专注C/C++及内核技术
...嗒啪嗒的敲着打字机的键盘，随意的打着一些句子。这位通信专家一边打一边数着字母、数字、标点和空格的数目，最终发现160个字符足够表现一个简单的意思。当时Hellebrand正在参与一个允许手机发送及显示文字消息的标准制...
VC DDE（Dynamic Data Exchange）与EXCEL连接 - C/C++ - 清泛网 - 专注C/C++及内核技术
...动态数据交换，是基于WINDOWS系统开发的一种消息传输的通信方案。花了半天时间研究了下，做了个案例，VC6.0下调试通过，很开心。作为一个产品经理，为产品设计搭建好平台，有人的平台，有技术平台，一切目标为了高效的做...
No connection could be made because the target machine actively refused it?
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I had the same error with my WCF service using Net TCP binding, but resolved after starting the below services in my case.
Net.Pipe.Listener.Adapter
Net.TCP.Listener.Adapter
Net.Tcp Port Sharing Service
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从Sloodle看三维虚拟学习环境的发展趋势 - 资讯 - 清泛网 - 专注C/C++及内核技术
...电子邮件、XML远程调用、HTTP请求等方式在因特网上进行通信。用户可以通过 Web浏览器使用 HTTP协议链接到 Moodle服务器 ,服务器端则通过判断用户的权限决定是否响应用户的请求。Second Life中的一个对象发出一个 HTTP请求 , Sloodle模...
PDO closing connection
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I don’t actually agree that messing with The TCP connection via PHP is a good idea. All the low level TCP connection handling are abstracted away so that we just have to deal with the high level class and objects during runtime. PHP is a request based language (as you p...