How Facebook was used as a proxy by web scraping bots
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crawler-user-agents/crawler-user-agents.json at master · monperrus/crawler-user-agents · GitHub
What is User Agent? | Seletronic
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Agent/AgentTest.php at master · ARCANEDEV/Agent · GitHub
GitHub - jiusanzhou/surferua: Surfer User-Agent (surferua) is a lightweight and high performance Golang package that generate HTTP User-Agent strings with particular attention to device type. 高性能 Golang 爬虫浏览器随机库。
facebook - Error 403 when clicking "Share" - Stack Overflow
Webクローラーの比較一覧
m.facebook.com / referrals for Safari in Google Analytics Improperly Tracked - Stack Overflow
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How to Parse a User Agent in PHP with Minimal Effort | 256 Kilobytes