[ruby-cvs:78709] 5105240b1e (master): lib/net/http/response.rb: support raw deflate correctly

Yusuke Endoh	2019-12-16 23:20:42 +0900 (Mon, 16 Dec 2019)

  New Revision: 5105240b1e

  https://github.com/ruby/ruby/commit/5105240b1e

  Log:
    lib/net/http/response.rb: support raw deflate correctly
    
    Net::HTTP had used `Zlib::Inflate.new(32 + Zlib::MAX_WBITS)` for all
    content encoding (deflate, zlib, and gzip).
    But the argument `32 + Zlib::MAX_WBITS` means zlib and gzip decoding
    with automatic header detection, so (raw) deflate compression had not
    been supported.
    
    This change makes it support raw deflate correctly by passing an
    argument `-Zlib::MAX_WBITS` (which means raw deflate) to
    `Zlib::Inflate.new`.  All deflate-mode tests are fixed too.
    
    [Bug #11268]

  Modified files:
    lib/net/http/response.rb
    test/net/http/test_httpresponse.rb