locojohn nginx-forum at
Wed Sep 23 11:47:26 UTC 2015

I am sorry, I found the answer to my own question:

HTTP/2 uses SPDY as a jumping-off point. HTTP/2, however, uses a fixed
Huffman code-based header compression algorithm, instead of SPDY's dynamic
stream-based compression. This helps to reduce the potential for attacks on
the protocol.

Posted at Nginx Forum:,261727,261761#msg-261761

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