lib/ably/rest/middleware/parse_message_pack.rb in ably-0.1.5 vs lib/ably/rest/middleware/parse_message_pack.rb in ably-0.1.6

@@ -5,16 +5,20 @@
   module Rest
     module Middleware
       class ParseMessagePack < Faraday::Response::Middleware
         def on_complete(env)
           if env.response_headers['Content-Type'] == 'application/x-msgpack'
-            env.body = parse(env.body)
+            env.body = parse(env.body) unless env.response_headers['Ably-Middleware-Parsed'] == true
             env.response_headers['Ably-Middleware-Parsed'] = true
           end
         end
 
         def parse(body)
-          MessagePack.unpack(body)
+          if body.length > 0
+            MessagePack.unpack(body)
+          else
+            body
+          end
         rescue MessagePack::MalformedFormatError => e
           raise Ably::Exceptions::InvalidResponseBody, "Expected MessagePack response: #{e.message}"
         end
       end
     end