Print some logs.

lib/async/http/protocol/http1/finishable.rb

@@ -15,6 +15,8 @@ class Finishable < ::Protocol::HTTP::Body::Wrapper
 					def initialize(body)
 						super(body)
 
+						$stderr.puts "Finishable#initialize: #{body.inspect}"
+
 						@closed = Async::Variable.new
 						@error = nil
 
@@ -28,12 +30,16 @@ def reading?
 					def read
 						@reading = true
 
-						super
+						super.tap do |chunk|
+							$stderr.puts "Finishable#read: #{chunk.inspect}"
+						end
 					end
 
 					def close(error = nil)
 						super
 
+						$stderr.puts "Finishable#close: #{error.inspect}"
+
 						unless @closed.resolved?
 							@error = error
 							@closed.value = true