Index: samesite.py
==================================================================
--- samesite.py
+++ samesite.py
@@ -45,11 +45,11 @@
 	'Date',
 	'Expires',
 	'Referer',
 	'Server',
 	'Via',
-	'X-Cache', 'X-Cache-Lookup', 'X-Livetool', 'X-Powered-By',
+	'X-CCC', 'X-CID', 'X-Cache', 'X-Cache-Lookup', 'X-Livetool', 'X-Powered-By',
 ])
 
 block_size = 8192
 
 import bsddb3.dbshelve, copy, datetime, http.server, spacemap, urllib.request, urllib.error
@@ -298,10 +298,11 @@
 						os.renames(empty_name, temp_name)
 					temp_file = open(temp_name, 'r+b')
 					if requested_ranges == None and needed == None:
 						needed = new_record['_parts']
 					needed.rewind()
+					countdown = 16
 					while True:
 						# XXX can make this implicit - one request per range
 						(start, end) = needed.pop()
 						if start == None:
 							break
@@ -318,12 +319,15 @@
 							assert stream_pos <= end, 'Received more data then requested: pos:{} start:{} end:{}.'.format(stream_pos, start, end)
 							temp_file.seek(stream_last)
 							temp_file.write(buffer)
 							x = new_record['_parts'] - spacemap.SpaceMap({stream_last: stream_pos})
 							new_record['_parts'] = new_record['_parts'] - spacemap.SpaceMap({stream_last: stream_pos})
-							index[my_path_b] = old_record
-							index.sync()
+							countdown -= 1
+							if countdown == 0:
+								index[my_path_b] = old_record
+								index.sync()
+								countdown = 16
 							old_record = copy.copy(new_record)
 							stream_last = stream_pos
 							if end - stream_last < block_size:
 								req_block_size = end - stream_last
 							buffer = source.read(req_block_size)
@@ -340,11 +344,11 @@
 				self.send_response(error.code)
 				self.end_headers()
 				print(error, repr(my_headers))
 				return
 
-		print(index[my_path_b])
+		#print(index[my_path_b])
 
 		if not os.access(file_name, os.R_OK) and os.access(temp_name, os.R_OK) and '_parts' in index[my_path_b] and index[my_path_b]['_parts'] == spacemap.SpaceMap():
 			# just moving
 			# drop old dirs XXX
 			print('Moving temporary file to new destination.')