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Bitwise operation and usage
... libraries for socket connections, so you don't actually need to build the TCP/IP communication frames. But think about the good people that programmed those APIs for you, they had to deal with frame construction for sure; using all kinds of bitwise operations to go back and forth from the low-level...
Getting visitors country from their IP
I want to get visitors country via their IP... Right now I'm using this ( http://api.hostip.info/country.php?ip= ...... )
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App Inventor 2 数学积木完全指南：从加减乘除到位运算，一篇搞定所有计算...
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做循环索引、数据分页时，求模是最常用的。处理硬件协议时，余数更符合底层逻辑。
八、位运算实战：二进制位操作
这是进阶玩家最爱的部分。App Inventor 2 提供三种按位运算：
- 按位与(&)：两位都为 1，结果才为 1
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Why / when would it be appropriate to override ToString?
...hat it does. With all that in mind let's consider...
Use Case - Parsing a TCP packet:
Not an application-level-only network capture but something with more meat like a pcap capture.
You want to overload ToString() for just the TCP layer so you can print data to the console. What would it include?...
How do I get user IP address in django?
How do I get user's IP in django?
11 Answers
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Pointer to pointer clarification
...an address, it returns the object at that memory address. So when you do *ipp = ip2, what you are doing is *ipp get the object at the address held in ipp which is ip1 and then assign to ip1 the value stored in ip2, which is the address of j.
Simply
& --> Address of
* --> Value at
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How many system resources will be held for keeping 1,000,000 websocket open? [closed]
... is not unique to WebSockets since WebSockets are fundamentally long-lived TCP sockets with a HTTP-like handshake and minimal framing for messages.
The real question is: could a single server handle 1,000,000 simultaneous socket connections and what server resources would this consume? The answer i...
Why is it said that “HTTP is a stateless protocol”?
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@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 ...
Get the client IP address using PHP [duplicate]
I want to get the client IP address who uses my website. I am using the PHP $_SERVER superglobal:
5 Answers
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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...