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Linux iptables防火墙开放mysql、apache的端口 - 操作系统(内核) - 清泛网 ...
...sql、apache的端口vi etc sysconfig iptables 修改配置，添加两条tcp端口允许的记录：[root@iZ23rlmiwviZ ~] cat etc sysconfig iptables sample configuration for iptables service vi /etc/sysconfig/iptables 修改配置，添加两条tcp端口允许的记录：
[root@iZ23rlmiwvi...
close vs shutdown socket?
...
Keep in mind, even if you close() a TCP socket, it won't necessarily be immediately reusable anyway, since it will be in a TIME_WAIT state while the OS makes sure there's no outstanding packets that might get confused as new information if you were to immediate...
How can I interrupt a ServerSocket accept() method?
...red Jun 6 '10 at 10:28
Juha SyrjäläJuha Syrjälä
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WebSockets protocol vs HTTP
..., but from the logic to parse/handle/store those headers. In addition, the TCP connection setup latency is probably a bigger factor than the size or processing time for each request.
2) Why was it implemented instead of updating HTTP protocol?
There are efforts to re-engineer the HTTP protocol to ...
How to sort an array of objects with jquery or javascript [duplicate]
... answered Mar 31 '11 at 17:44
HåvardHåvard
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How do you find the last day of the month? [duplicate]
...ed Nov 2 '10 at 15:07
Øyvind BråthenØyvind Bråthen
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Redirect all output to file [duplicate]
...dited Oct 23 '14 at 9:48
David Pärsson
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answered Jul 13 '11 at 5:16
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How do multiple clients connect simultaneously to one port, say 80, on a server? [duplicate]
.... Nobody is ever in the "connected" state.
For a stateful protocol (like TCP), a connection is identified by a 4-tuple consisting of source and destination ports and source and destination IP addresses. So, if two different machines connect to the same port on a third machine, there are two disti...
What ports does RabbitMQ use?
....0.0.1)
Host is up (0.00041s latency).
PORT STATE SERVICE
443/tcp open https
5672/tcp open amqp
15672/tcp open unknown
35102/tcp open unknown
59440/tcp open unknown
Oh look, 5672, and 15672
Use netstat:
netstat -lntu
Active Internet connections (only servers)...
Efficiently test if a port is open on Linux?
...
A surprise I found out recently is that Bash natively supports tcp connections as file descriptors. To use:
exec 6<>/dev/tcp/ip.addr.of.server/445
echo -e "GET / HTTP/1.0\n" >&6
cat <&6
I'm using 6 as the file descriptor because 0,1,2 are stdin, stdout, and stderr....