1 #!/usr/bin/env python 2 # Copyright 2013 Google Inc. All Rights Reserved. 3 # 4 # Licensed under the Apache License, Version 2.0 (the "License"); 5 # you may not use this file except in compliance with the License. 6 # You may obtain a copy of the License at 7 # 8 # http://www.apache.org/licenses/LICENSE-2.0 9 # 10 # Unless required by applicable law or agreed to in writing, software 11 # distributed under the License is distributed on an "AS IS" BASIS, 12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 # See the License for the specific language governing permissions and 14 # limitations under the License. 15 16 """Defines a list of common network speeds. 17 18 These values come from http://www.webpagetest.org/ 19 20 See: 21 https://sites.google.com/a/webpagetest.org/docs/other-resources/2011-fcc-broadband-data 22 https://github.com/WPO-Foundation/webpagetest/blob/HEAD/www/settings/connectivity.ini.sample 23 """ 24 25 import collections 26 27 28 NetConfig = collections.namedtuple('NetConfig', ['down', 'up', 'delay_ms']) 29 30 31 # pylint: disable=bad-whitespace 32 _NET_CONFIGS = { 33 'dialup': NetConfig(down= '49Kbit/s', up= '30Kbit/s', delay_ms= '120'), 34 '3g': NetConfig(down= '1638Kbit/s', up= '768Kbit/s', delay_ms= '150'), 35 'dsl': NetConfig(down= '1536Kbit/s', up= '384Kbit/s', delay_ms= '50'), 36 'cable': NetConfig(down= '5Mbit/s', up= '1Mbit/s', delay_ms= '28'), 37 'fios': NetConfig(down= '20Mbit/s', up= '5Mbit/s', delay_ms= '4'), 38 } 39 40 41 NET_CONFIG_NAMES = _NET_CONFIGS.keys() 42 43 44 def GetNetConfig(key): 45 """Returns the NetConfig object corresponding to the given |key|.""" 46 if key not in _NET_CONFIGS: 47 raise KeyError('No net config with key: %s' % key) 48 return _NET_CONFIGS[key] 49
