--- Revision 376330313937
+++ Revision 346463373662
@@ -1,12 +1,12 @@
 def my_awesome_application(environ):
     # do stuff
-    yield b'200 OK', [], ["Hello, World!"]
+    return b'200 OK', [], ["Hello, World!"]
 
 def my_middelware(app):
     def wrapper(environ):
         # maybe edit environ
         try:
-            status, headers, body = yield app(environ)
+            status, headers, body = app(environ)
             # maybe edit response:
             # body = (piglatin(data) for data in body)
             return status, headers, body
@@ -17,13 +17,10 @@
 
 def my_server(app, httpreq):
     environ = wsgi.make_environ(httpreq)
-
-    def process_response(result):
-        status, headers, body = result
+    try:
+        status, headers, body = app(environ)
         write_headers(httpreq, status, headers)
-        Coroutine(body, body_trampoline, finish_response)
-
-    def finish_response(result):
-        # cleanup, if any
-
-    Coroutine(app(environ), app_trampoline, process_response)
+        for data in body:
+            write_data(httpreq, data)
+     except:
+         respond_with_500()