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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?
...
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....
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...
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
...
OceanBase使用libeasy原理源码分析：服务器端 - 数据库(内核) - 清泛网 - ...
...数用于从该连接的输入缓冲区中反序列化出一个符合MySQL协议的包，然后吐给上层使用
handler_.decode = ObMySQLCallback::decode;
// 对于每个decode出来的包进行实际的处理，在OceanBase的实现中，我们大多数时候仅仅是将包push到我们自己...
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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How to test which port MySQL is running on and whether it can be connected to?
...ee a line that looks like this if mysql is indeed listening on that port.
tcp 0 0 127.0.0.1:3306 0.0.0.0:* LISTEN
Port 3306 is MySql's default port.
To connect, you just have to use whatever client you require, such as the basic mysql client.
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What is the largest Safe UDP Packet Size on the Internet
...ented packet. If you want "safe" packets, use a packet protocol on top of TCP.
– Astara
Jun 29 '16 at 1:34
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