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# Copyright 2017 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import common
from common import TestDriver
from common import IntegrationTest
class Fallback(IntegrationTest):
# Ensure that when a carrier blocks using the secure proxy, requests fallback
# to the HTTP proxy server.
def testSecureProxyProbeFallback(self):
with TestDriver() as test_driver:
test_driver.AddChromeArg('--enable-spdy-proxy-auth')
# Set the secure proxy check URL to the google.com favicon, which will be
# interpreted as a secure proxy check failure since the response body is
# not "OK". The google.com favicon is used because it will load reliably
# fast, and there have been problems with chromeproxy-test.appspot.com
# being slow and causing tests to flake.
test_driver.AddChromeArg(
'--data-reduction-proxy-secure-proxy-check-url='
'http://www.google.com/favicon.ico')
# Start chrome to begin the secure proxy check
test_driver.LoadURL('http://www.google.com/favicon.ico')
self.assertTrue(
test_driver.SleepUntilHistogramHasEntry("DataReductionProxy.ProbeURL"))
test_driver.LoadURL('http://check.googlezip.net/test.html')
responses = test_driver.GetHTTPResponses()
self.assertNotEqual(0, len(responses))
for response in responses:
self.assertHasChromeProxyViaHeader(response)
self.assertEqual(u'http/1.1', response.protocol)
# Verify that when Chrome receives a non-4xx response through a Data Reduction
# Proxy that doesn't set a proper via header, Chrome falls back to the next
# available proxy.
def testMissingViaHeaderNon4xxFallback(self):
with TestDriver() as test_driver:
test_driver.AddChromeArg('--enable-spdy-proxy-auth')
# Set the primary Data Reduction Proxy to be the test server, which does
# not add any Via headers. The fallback Data Reduction Proxy is set to the
# canonical Data Reduction Proxy target.
test_driver.AddChromeArg('--data-reduction-proxy-http-proxies='
'https://chromeproxy-test.appspot.com;'
'http://compress.googlezip.net')
# Load a page that should fall back off of the test server proxy, and onto
# the canonical proxy that will set the correct Via header.
test_driver.LoadURL('http://chromeproxy-test.appspot.com/default')
responses = test_driver.GetHTTPResponses()
self.assertNotEqual(0, len(responses))
for response in responses:
self.assertHasChromeProxyViaHeader(response)
self.assertEqual(u'http/1.1', response.protocol)
# Check that the BypassTypePrimary histogram has a single entry in the
# MissingViaHeaderOther category (which is enum value 5), to make sure
# that the bypass was caused by the missing via header logic and not
# something else.
histogram = test_driver.GetHistogram(
"DataReductionProxy.BypassTypePrimary")
self.assertEqual(1, histogram['count'])
self.assertIn({'count': 1, 'high': 6, 'low': 5}, histogram['buckets'])
# DataSaver uses a https proxy by default, if that fails it will fall back to
# a http proxy; and if that fails, it will fall back to a direct connection
def testHTTPToDirectFallback(self):
with TestDriver() as test_driver:
test_driver.AddChromeArg('--enable-spdy-proxy-auth')
# set the primary (https) proxy to a bad one.
# That will force DataSaver to the http proxy for normal page requests.
test_driver.AddChromeArg('--spdy-proxy-auth-origin='
'https://nonexistent.googlezip.net')
test_driver.AddChromeArg('--data-reduction-proxy-http-proxies='
'http://nonexistent.googlezip.net;'
'http://compress.googlezip.net')
test_driver.LoadURL('http://check.googlezip.net/fallback/')
responses = test_driver.GetHTTPResponses()
self.assertNotEqual(0, len(responses))
for response in responses:
self.assertEqual(80, response.port)
test_driver.LoadURL('http://check.googlezip.net/block/')
responses = test_driver.GetHTTPResponses()
self.assertNotEqual(0, len(responses))
for response in responses:
self.assertNotHasChromeProxyViaHeader(response)
if __name__ == '__main__':
IntegrationTest.RunAllTests()
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