lib/async/http/protocol/http1/request.rb in async-http-0.57.0 vs lib/async/http/protocol/http1/request.rb in async-http-0.58.0

@@ -30,14 +30,17 @@
 					def self.read(connection)
 						if parts = connection.read_request
 							self.new(connection, *parts)
 						end
 					end
+
+					UPGRADE = 'upgrade'
 					
 					def initialize(connection, authority, method, path, version, headers, body)
 						@connection = connection
 						
-						protocol = connection.upgrade?(headers)
+						# HTTP/1 requests with an upgrade header (which can contain zero or more values) are extracted into the protocol field of the request, and we expect a response to select one of those protocols with a status code of 101 Switching Protocols.
+						protocol = headers.delete('upgrade')
 						
 						super(nil, authority, method, path, version, headers, body, protocol)
 					end
 					
 					def connection