大约有 1,100 项符合查询结果（耗时：0.0108秒） [XML]
linux 通过bind下搭建DNS Server - 更多技术 - 清泛网 - 专注C/C++及内核技术
...1.理论普及
DNS服务器分为:
master（主DNS服务器）：拥有区域数据的文件，并对整个区域数据进行管理。
slave(从服务器或叫辅助服务器）：拥有主DNS服力器的区域文件的副 本，辅助主DNS服务器对客户端进行解析，当主DNS服务器...
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...
App Inventor 2开发计步器与定位器 - App Inventor 2 中文网 - 清泛IT论坛，有思想、有深度
...顶部设置显示步数、距离、计时、位置等关键信息的显示区域；
在显示区域下面，设置开始、停止、保存等按钮，用于启动程序的计步、计时功能；
在页面最底部设置历史信息的保存信息显示区域，用来保存历史数据，同时...
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....
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)...
What are named pipes?
...d default exists (much like port 80 for HTTP, SQL server uses port 1433 in TCP/IP; \\.\pipe\sql\query for a named pipe).
By setting up additional named pipes, you can have multiple DB servers running, each with its own request listeners.
The advantage of named pipes is that it is usually much fas...
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...
How many socket connections can a web server handle?
...edicated hosting, I read somewhere a server/machine can only handle 64,000 TCP connections at one time, is this true? How many could any type of hosting handle regardless of bandwidth? I'm assuming HTTP works over TCP.
...
Is it safe to parse a /proc/ file?
I want to parse /proc/net/tcp/ , but is it safe?
7 Answers
7
...
ImageConvertor 扩展：免费图像转换器，支持JPG/PNG/WEBP格式转换和图像处...
...入路径,输出路径,X坐标,Y坐标,宽度,高度)
裁剪图像指定区域并保存到新路径。
输入路径：文本类型，源图像文件路径
输出路径：文本类型，目标图像文件路径
X坐标：数字类型，裁剪起始X坐标
Y坐标：数...