Add on_interim_response.

Author: ioquatix

lib/protocol/http/request.rb

@@ -74,6 +74,17 @@ def send_interim_response(status, headers)
 				@interim_response&.call(status, headers)
 			end
 
+			def on_interim_response(&block)
+				if interim_response = @interim_response
+					@interim_response = ->(status, headers) do
+						block.call(status, headers)
+						interim_response.call(status, headers)
+					end
+				else
+					@interim_response = block
+				end
+			end
+			
 			# Whether this is a HEAD request: no body is expected in the response.
 			def head?
 				@method == Methods::HEAD