...

src/calibre/srv/http.py

@@ -489,7 +489,7 @@ class HTTPPair(object):
     def generate_static_output(self, name, generator):
         return generate_static_output(self.server_loop.gso_cache, self.server_loop.gso_lock, name, generator)
 
-    def response(self):
+    def respond(self):
         if self.chunked_read:
             self.input_reader = ChunkedReader(self.conn.socket_file, self.max_request_body_size)
         else:

src/calibre/srv/loop.py

@@ -395,6 +395,7 @@ class WorkerThread(Thread):  # {{{
         self.ready = False
         self.serving = False
         self.server_loop = server_loop
+        self.conn = None
         Thread.__init__(self, name='ServerWorker')
 
     def run(self):
@@ -402,7 +403,7 @@ class WorkerThread(Thread):  # {{{
             self.ready = True
             while True:
                 self.serving = False
-                conn = self.server_loop.requests.get()
+                self.conn = conn = self.server_loop.requests.get()
                 if conn is None:
                     return  # Clean exit
                 with conn, self:

src/calibre/srv/utils.py

@@ -65,7 +65,10 @@ class MultiDict(dict):  # {{{
                 return dict.__getitem__(self, key)
             except KeyError:
                 return []
-        return self.__getitem__(key)
+        try:
+            return self.__getitem__(key)
+        except KeyError:
+            return default
 
     def pop(self, key, default=None, all=False):
         ans = dict.pop(self, key, default)