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Why is it said that “HTTP is a stateless protocol”?
...
@Andrew: HTTP is not "built on" TCP, and TCP's state is not HTTP's. The two are entirely separate protocols at different layers in the stack. You could serve HTTP over named pipes if you wanted, or even by sending files around, if you got enough masochists ...
从一个开发的角度看负载均衡和LVS - 更多技术 - 清泛网 - 专注C/C++及内核技术
...OSI模型的第四层——传输层之上，传输层上有我们熟悉的TCP/UDP，LVS支持TCP/UDP的负载均衡。
LVS的转发主要通过修改IP地址（NAT模式，分为源地址修改SNAT和目标地址修改DNAT）、修改目标MAC（DR模式）来实现。
那么为什么LVS是在...
WCF timeout exception detailed investigation
...ient. In the Options when you start the capture, set the capture filter to tcp http and host service.example.com - this will reduce the amount of irrelevant traffic.
If you can, modify your client to notify you the exact start time of the call, and the time when the timeout occurred. Or just moni...
Socket 错误返回码详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...下表:
SO_DONTLINGER
SO_KEEPALIVE
SO_LINGER
SO_OOBINLINE
TCP_NODELAY
datagram socket ( SOCK_DGRAM )不支援這些選項
SO_DEBUG
SO_DONTROUTE
SO_RCVBUF
SO_SNDBUF
TCP_NODELAY
有些廠商的WinSock TCP/IP協定核心不支援這些選項
SO_ACCEPTCONN
SO_ERROR
...
为什么你有10年经验，但成不了专家？ - 杂谈 - 清泛网 - 专注C/C++及内核技术
...意设计出来的练习，它要求一个人离开自己的熟练和舒适区域，不断地依据方法去练习和提高。
比如足球爱好者只不过是享受踢球的过程，普通的足球运动员只不过是例行惯事地训练和参加比赛，而顶尖的足球运动员却不断地...
How would one write object-oriented code in C? [closed]
...n = &rs232Open;
: :
commRs232.write = &rs232Write;
tCommClass commTcp;
commTcp.open = &tcpOpen;
: :
commTcp.write = &tcpWrite;
Of course, those code segments above would actually be in a "constructor" such as rs232Init().
When you 'inherit' from that class, you just change the po...
Android应用开发性能优化完全分析 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...开启后在我们想要调试的应用界面中可以看到各种颜色的区域，具体含义如下：
颜色
含义
无色
WebView等的渲染区域
蓝色
1x过度绘制
绿色
2x过度绘制
淡红色
3x过度绘制
红色
...
OnInitUpdate、OnUpdate、OnDraw与OnPaint - C/C++ - 清泛网 - 专注C/C++及内核技术
...不见了的问题简单，因为当你的窗口改变后，会产生无效区域，这个无效的区域需要重画。一般Windows回发送两个消息WM_PAINT（通 知客户区有变化）和WM_NCPAINT（通知非客户区有变化）。非客户区的重画系统自己搞定了，而客户区...
Is there a way for multiple processes to share a listening socket?
...that it does not close will continue to be shared, and (for example with a TCP listening socket) can be used to accept() new sockets for clients. This is how many servers, including Apache in most cases, work.
On Windows the same thing is basically true, except there is no fork() system call so the...
Server is already running in Rails
... using command
ps -aef | grep rails
OR by this command
sudo lsof -wni tcp:3000
then
kill -9 pID
OR use this command
To find and kill process by port name on which that program is running. For 3000 replace port on which your program is running.
sudo kill -9 $(lsof -i :3000 -t)
Old Solut...