Add an opt-out header for HTTP throttling. Never throttle for localhost.

net/base/net_util_unittest.cc

 // Copyright (c) 2011 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.
 
 #include "net/base/net_util.h"
 
 #include "base/file_path.h"
 #include "base/format_macros.h"
 #include "base/string_number_conversions.h"
 #include "base/string_util.h"
@@ skipping 2148 matching lines @@
                                &ip_prefix,
                                &prefix_length_in_bits));
 
     EXPECT_EQ(tests[i].expected_to_match,
               IPNumberMatchesPrefix(ip_number,
                                     ip_prefix,
                                     prefix_length_in_bits));
   }
 }
 
+TEST(NetUtilTest, IsLocalhost) {
+  EXPECT_TRUE(net::IsLocalhost("localhost"));
+  EXPECT_TRUE(net::IsLocalhost("localhost.localdomain"));
+  EXPECT_TRUE(net::IsLocalhost("localhost6"));
+  EXPECT_TRUE(net::IsLocalhost("localhost6.localdomain6"));
+  EXPECT_TRUE(net::IsLocalhost("127.0.0.1"));
+  EXPECT_TRUE(net::IsLocalhost("127.0.1.0"));
+  EXPECT_TRUE(net::IsLocalhost("127.1.0.0"));
+  EXPECT_TRUE(net::IsLocalhost("127.0.0.255"));
+  EXPECT_TRUE(net::IsLocalhost("127.0.255.0"));
+  EXPECT_TRUE(net::IsLocalhost("127.255.0.0"));
+  EXPECT_TRUE(net::IsLocalhost("::1"));
+  EXPECT_TRUE(net::IsLocalhost("0:0:0:0:0:0:0:1"));
+
+  EXPECT_FALSE(net::IsLocalhost("localhostx"));
+  EXPECT_FALSE(net::IsLocalhost("foo.localdomain"));
+  EXPECT_FALSE(net::IsLocalhost("localhost6x"));
+  EXPECT_FALSE(net::IsLocalhost("localhost.localdomain6"));
+  EXPECT_FALSE(net::IsLocalhost("localhost6.localdomain"));
+  EXPECT_FALSE(net::IsLocalhost("127.0.0.1.1"));
+  EXPECT_FALSE(net::IsLocalhost(".127.0.0.255"));
+  EXPECT_FALSE(net::IsLocalhost("::2"));
+  EXPECT_FALSE(net::IsLocalhost("::1:1"));
+  EXPECT_FALSE(net::IsLocalhost("0:0:0:0:1:0:0:1"));
+  EXPECT_FALSE(net::IsLocalhost("::1:1"));
+  EXPECT_FALSE(net::IsLocalhost("0:0:0:0:0:0:0:0:1"));
+}
+
 // Verify GetNetworkList().
 TEST(NetUtilTest, GetNetworkList) {
   NetworkInterfaceList list;
   ASSERT_TRUE(GetNetworkList(&list));
 
   for (NetworkInterfaceList::iterator it = list.begin();
        it != list.end(); ++it) {
     // Verify that the name is not empty.
     EXPECT_FALSE(it->name.empty());
 
     // Verify that the address is correct.
     EXPECT_TRUE(it->address.size() == kIPv4AddressSize ||
                 it->address.size() == kIPv6AddressSize)
         << "Invalid address of size " << it->address.size();
     bool all_zeroes = true;
     for (size_t i = 0; i < it->address.size(); ++i) {
       if (it->address[i] != 0) {
         all_zeroes = false;
         break;
       }
     }
     EXPECT_FALSE(all_zeroes);
   }
 }
 
 }  // namespace net