[1] HTTP compression - Wikipedia, the free encyclopedia ( 版) <https://en.wikipedia.org/wiki/HTTP_compression#Content-coding_tokens>
peerdist[9] – Microsoft Peer Content Caching and Retrieval
[2] [MS-PCCRTP]: Peer Content Caching and Retrieval: Hypertext Transfer Protocol (HTTP) Extensions ( 版) <https://msdn.microsoft.com/en-us/library/dd304322.aspx>