1 // Copyright 2020 The Chromium Authors 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef NET_DNS_DNS_ALIAS_UTILITY_H_ 6 #define NET_DNS_DNS_ALIAS_UTILITY_H_ 7 8 #include <set> 9 #include <string> 10 11 #include "net/base/net_export.h" 12 13 namespace net::dns_alias_utility { 14 15 // Returns a fixed up set of canonicalized aliases (i.e. aliases that are 16 // written as hostnames for canonical URLs). The set is stripped of "localhost", 17 // IP addresses, duplicates, the empty string, strings longer than 18 // `dns_protocol::kMaxCharNameLength` characters (with one extra character 19 // allowed for fully-qualified hostnames, i.e. hostnames ending with '.'), and 20 // any strings that fail to URL-canonicalize as hosts. The remaining aliases are 21 // replaced with their canonicalized forms. 22 NET_EXPORT_PRIVATE std::set<std::string> FixUpDnsAliases( 23 const std::set<std::string>& aliases); 24 25 } // namespace net::dns_alias_utility 26 27 #endif // NET_DNS_DNS_ALIAS_UTILITY_H_ 28