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What's the difference between streams and datagrams in network programming?
...laces the call, the other answers, you say hello to each other (SYN/ACK in TCP), and then you exchange information. Once you are done, you say goodbye (FIN/ACK in TCP). If one side doesn't hear a goodbye, they will usually call the other back since this is an unexpected event; usually the client w...
Command line for looking at specific port
... -np <protocol> | find "port #"
So for example to check port 80 on TCP, you can do this: netstat -np TCP | find "80"
Which ends up giving the following kind of output:
TCP 192.168.0.105:50466 64.34.119.101:80 ESTABLISHED
TCP 192.168.0.105:50496 64.34.119.101:80 ESTAB...
HTTP 1.0 vs 1.1
...on would be closed. This lead to some big efficiency problems because of TCP Slow Start.
OPTIONS method:
HTTP/1.1 introduces the OPTIONS method. An HTTP client can use this method to determine the abilities of the HTTP server. It's mostly used for Cross Origin Resource Sharing in web applicati...
Difference between socket and websocket?
...cting to Application Server over a protocol similar to HTTP that runs over TCP/IP. So they are primarily for Web Applications that require a permanent connection to its server. On the other hand, plain sockets are more powerful and generic. They run over TCP/IP but they are not restricted to browser...
Who is listening on a given TCP port on Mac OS X?
On Linux, I can use netstat -pntl | grep $PORT or fuser -n tcp $PORT to find out which process (PID) is listening on the specified TCP port. How do I get the same information on Mac OS X?
...
What is the overhead of creating a new HttpClient per call in a WebAPI client?
...is disposed, it disposes HttpClientHandler, which then forcibly closes the TCP/IP connection in the pool of connections that is managed by ServicePointManager. This means that each request with a new HttpClient requires re-establishing a new TCP/IP connection.
From my tests, using plain HTTP on a ...
Difference between \n and \r?
...fferent Operating Systems. Also this plays a role in data transmitted over TCP/IP which requires the use of \r\n.
\n Unix
\r Mac
\r\n Windows and DOS.
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How do ports work with IPv6?
...addressing scheme, DHCP [DHCPv6] and ICMP [ICMPv6]. So basically, anything TCP/UDP related, including the port range (0-65535) remains unchanged.
Edit: Port 0 is a reserved port in TCP but it does exist. See RFC793
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Web API 最佳入门指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...户端的服务。另外与WCF REST Service不同在于，Web API利用Http协议的各个方面来表达服务(例如 URI/request responseheader/caching/versioning/content format)，因此就省掉很多配置。
当你遇到以下这些情况的时候，就可以考虑使用Web API了。
需...
Are HTTPS headers encrypted?
... encrypted if you're using TLS. Also, whether you're using SNI or not, the TCP and IP headers are never encrypted. (If they were, your packets would not be routable.)
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