lib/async/http/body/stream.rb in async-http-0.46.3 vs lib/async/http/body/stream.rb in async-http-0.46.4

@@ -27,9 +27,11 @@
 			class Stream
 				def initialize(input, output = Writable.new)
 					@input = input
 					@output = output
 					
+					raise ArgumentError, "Non-writable output!" unless output.respond_to?(:write)
+					
 					# Will hold remaining data in `#read`.
 					@buffer = nil
 					@closed = false
 				end