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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...
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...
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...
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...
No connection could be made because the target machine actively refused it?
...
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
...
Wi-Fi 是什么的缩写 - 程序人生、谈天论地 - 清泛IT论坛，有思想、有深度
...发明出来。当时的大背景是，IEEE 定义了一系列无线网络通信的标准，也就是我们常见到的 802.11 系列，但却没有规定如何去测试产品是否符合标准，导致 802.11 产品间的互通频频出现问题，而联盟的成立就是为了填补这一空缺。...
Wi-Fi 是什么的缩写 - 创意 - 清泛网 - 专注C/C++及内核技术
...发明出来。当时的大背景是，IEEE 定义了一系列无线网络通信的标准，也就是我们常见到的 802.11 系列，但却没有规定如何去测试产品是否符合标准，导致 802.11 产品间的互通频频出现问题，而联盟的成立就是为了填补这一空缺。...
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...
psql: FATAL: Ident authentication failed for user “postgres”
...art is important: it tells the psql client that we wish to connect using a TCP connection (which is configured to use password authentication), and not by a PEER connection (which does not care about the password).
$ psql -U postgres -h localhost
...
Are HTTPS URLs encrypted?
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Yes, the SSL connection is between the TCP layer and the HTTP layer. The client and server first establish a secure encrypted TCP connection (via the SSL/TLS protocol) and then the client will send the HTTP request (GET, POST, DELETE...) over that encrypted TCP c...