class Gzip
Middleware to automatically decompress response bodies. If the “Accept-Encoding” header wasn't set in the request, this sets it to “gzip,deflate” and appropriately handles the compressed response from the server. This resembles what Ruby 1.9+ does internally in Net::HTTP#get.
This middleware is NOT necessary when these adapters are used:
-
net_http on Ruby 1.9+
-
net_http_persistent on Ruby 2.0+
-
em_http
Constants
- ACCEPT_ENCODING
- CONTENT_ENCODING
- CONTENT_LENGTH
- RUBY_ENCODING
- SUPPORTED_ENCODINGS
Public Instance Methods
brotli_inflate(body)
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# File lib/quickbooks/faraday/middleware/gzip.rb, line 67 def brotli_inflate(body) self.class.dependency 'brotli' Brotli.inflate(body) end
call(env)
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# File lib/quickbooks/faraday/middleware/gzip.rb, line 23 def call(env) env[:request_headers][ACCEPT_ENCODING] ||= SUPPORTED_ENCODINGS @app.call(env).on_complete do |response_env| case response_env[:response_headers][CONTENT_ENCODING] when 'gzip' reset_body(response_env, &method(:uncompress_gzip)) when 'deflate' reset_body(response_env, &method(:inflate)) when 'br' reset_body(response_env, &method(:brotli_inflate)) end end end
inflate(body)
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# File lib/quickbooks/faraday/middleware/gzip.rb, line 53 def inflate(body) # Inflate as a DEFLATE (RFC 1950+RFC 1951) stream Zlib::Inflate.inflate(body) rescue Zlib::DataError # Fall back to inflating as a "raw" deflate stream which # Microsoft servers return inflate = Zlib::Inflate.new(-Zlib::MAX_WBITS) begin inflate.inflate(body) ensure inflate.close end end
reset_body(env) { |env| ... }
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# File lib/quickbooks/faraday/middleware/gzip.rb, line 37 def reset_body(env) env[:body] = yield(env[:body]) env[:response_headers].delete(CONTENT_ENCODING) env[:response_headers][CONTENT_LENGTH] = env[:body].length end
uncompress_gzip(body)
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# File lib/quickbooks/faraday/middleware/gzip.rb, line 43 def uncompress_gzip(body) io = StringIO.new(body) gzip_reader = if RUBY_ENCODING Zlib::GzipReader.new(io, :encoding => 'ASCII-8BIT') else Zlib::GzipReader.new(io) end gzip_reader.read end