# I am the Watcher. I am your guide through this vast new twtiverse.
# 
# Usage:
#     https://watcher.sour.is/api/plain/users              View list of users and latest twt date.
#     https://watcher.sour.is/api/plain/twt                View all twts.
#     https://watcher.sour.is/api/plain/mentions?uri=:uri  View all mentions for uri.
#     https://watcher.sour.is/api/plain/conv/:hash         View all twts for a conversation subject.
# 
# Options:
#     uri     Filter to show a specific users twts.
#     offset  Start index for quey.
#     limit   Count of items to return (going back in time).
# 
# twt range = 1 1
# self = https://watcher.sour.is/conv/3muutfq
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ARP 工作層次和原理解析**
概述\\-\\- ARP（Address Resolution Protocol，地址解析協議）是用來將 IP 地址解析爲 MAC 地址的協議。主機 (客戶端) 和三層網絡設備 (例如路由器，三層交換機) 上會維護一張 ARP 表，用於存儲 IP 地址和 MAC 地址的映射關係，每一個表項表示一個 IP 地址到 MAC 地址的轉換關係。工作層次第一種看法ARP 屬於二層協議，工作在數據鏈路層，因爲 AR ⌘ Read more