asuran

Asuran is a configurable web proxy with DNS redirection. Asuran is a race in Stargate Atlantis.

Asuran 是一个使用了 DNS 来实现的 HTTP 透明代理服务，可以配置代理的 URL 及操作。当然用做标准 HTTP 代理也是可以的。

Asuran 使用 golang 实现，使用 miekg godns 实现 DNS 服务。

Features 特性

• DNS Server
  • run like a real DNS Server
  • pass, redirect(like /etc/hosts), block, or null(can's found a IP) a request
  • redirect to asuran's HTTP Proxy(like a transparent HTTP proxy)
  • delay a response in const or rand durations
• HTTP Proxy
  • Standard or Transparent HTTP Proxy
  • proxy and modify HTTP's content:
    • set status code
    • set/remove/empty content-type
    • redirect to a new URL
    • cache URL's content and return in the future
    • map the content(including the HTTP headers) from another URL
    • restore|rewrite the content as response body
    • hijack then response as TCP without HTTP format
    • force the chunked to be enabled or disabled
    • force the connected host
    • force the 304 to be disabled
    • make choice of executing 302 in server or client
  • change the speed or rtt of HTTP:
    • drop the response in some duration
    • waiting a duration before HTTP headers then timeout or only delay
    • waiting another duration before HTTP body(after HTTP headers, also)
    • limit the speed of sending HTTP body
    • timeout in a duration, from beginning of sending body
• Profile for each device
  • each device has its own profile
  • config policy commands of domains and URLs
  • request histories
  • add/remove operators
• Capture websocket(without modify)

References 参考

• golang, Effective Go
• golang dns by Miek Gieben
• 《Go Web 编程》 by AstaXie （亦是 beego 作者）

Thanks

Thanks fatcowfeng for helping asuran. Bless.