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20个命令行工具监控 Linux 系统性能 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...1 root 10u FIFO 0,17 953 /dev/initctl
4. tcpdump — 网络数据包分析器
tcpdump 是一种使用最广泛的命令行网络数据包分析器或数据包嗅探程序，主要用于捕获和过滤 TCP/IP 包收到或者转移在一个网络的特定借口信息...
Exposing a port on a live Docker container
...r's port 8000 on your localhost's port 8001:
iptables -t nat -A DOCKER -p tcp --dport 8001 -j DNAT --to-destination 172.17.0.19:8000
One way you can work this out is to setup another container with the port mapping you want, and compare the output of the iptables-save command (though, I had to rem...
How do you connect localhost in the Android emulator? [duplicate]
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you should change the adb port with this command:
adb reverse tcp:8880 tcp:8880; adb reverse tcp:8081 tcp:8081; adb reverse tcp:8881 tcp:8881
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Keep-alive header clarification
...this info kept ("this connection is between computer A and server F")?
A TCP connection is recognized by source IP and port and destination IP and port. Your OS, all intermediate session-aware devices and the server's OS will recognize the connection by this.
HTTP works with request-response: cli...
How does the socket API accept() function work?
The socket API is the de-facto standard for TCP/IP and UDP/IP communications (that is, networking code as we know it). However, one of its core functions, accept() is a bit magical.
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How should one go about choosing a default TCP/IP port for a new service?
When developing an app that will listen on a TCP/IP port, how should one go about selecting a default port? Assume that this app will be installed on many computers, and that avoiding port conflicts is desired.
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Efficiently test if a port is open on Linux?
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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....
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
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libcurl的使用总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...程序里，主要采用callback function （回调函数）的形式完成传输任务，用户在启动传输前设置好各类参数和回调函数，当满足条件时libcurl将调用用户的回调函数实现特定功能。下面是利用libcurl完成传输任务的流程：
1. 调用cu...
How to open a specific port such as 9090 in Google Compute Engine
...n, make sure the instances have the network tag applied.
To allow incoming TCP connections to port 9090, in "Protocols and Ports" enter tcp:9090
Click Create
I hope this helps you.
Update Please refer to docs to customize your rules.
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