# what happens

# IO与中断

# URL 解析

通过 url 解析获取 hostname

// 在浏览器环境中访问 location

> location.host
shanyue.tech

> location.protocal
https

# DNS

解析 hostname 对应的 IP 地址

$ dig shanyue.tech +short
shanyue.netlify.com.
206.189.89.118

$ dig shici.xiange.tech +short
59.110.216.155

# CDN

# UDP

# TCP

# http

# https

#

# 命令

# dig

# nslookup

# host

# ss

# netstat

# 时间度量

# 术语

# Q&A

Last Updated: 1/24/2021, 2:20:14 PM