Added a no_decoding option to prevent automatically inflating the G…

…Zip or Deflate response.

lib/em-http/client.rb

@@ -257,7 +257,7 @@ def parse_response_header(header, version, status)
         @state = :body
       end
 
-      if decoder_class = HttpDecoders.decoder_for_encoding(response_header[CONTENT_ENCODING])
+      if !@req.no_decoding && decoder_class = HttpDecoders.decoder_for_encoding(response_header[CONTENT_ENCODING])
         begin
           @content_decoder = decoder_class.new do |s| on_decoded_body_data(s) end
         rescue HttpDecoders::DecoderError

lib/em-http/http_client_options.rb

@@ -1,7 +1,7 @@
 class HttpClientOptions
   attr_reader :uri, :method, :host, :port, :proxy
   attr_reader :headers, :file, :body, :query, :path
-  attr_reader :keepalive, :pass_cookies
+  attr_reader :keepalive, :pass_cookies, :no_decoding
 
   attr_accessor :followed, :redirects
 
@@ -21,6 +21,7 @@ def initialize(uri, options, method)
 
     @pass_cookies = options[:pass_cookies]
     @pass_cookies = true if @pass_cookies.nil?
+    @no_decoding = options[:no_decoding] || false
 
     set_uri(uri)
   end

spec/client_spec.rb

@@ -324,6 +324,26 @@ def failed(http=nil)
     }
   end
 
+  it "should not decode the response when configured so" do
+    EventMachine.run {
+
+      http = EventMachine::HttpRequest.new('http://127.0.0.1:8090/gzip').get :head => {
+        "accept-encoding" => "gzip, compressed"
+      }, :no_decoding => true
+
+      http.errback { failed(http) }
+      http.callback {
+        http.response_header.status.should == 200
+        http.response_header["CONTENT_ENCODING"].should == "gzip"
+
+        raw = http.response
+        Zlib::GzipReader.new(StringIO.new(raw)).read.should == "compressed"
+
+        EventMachine.stop
+      }
+    }
+  end
+
   it "should timeout after 0.1 seconds of inactivity" do
     EventMachine.run {
       t = Time.now.to_i