1// Copyright (c) 2010 The Chromium Authors. All rights reserved.
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_BASE_ADDRESS_FAMILY_H_
6#define NET_BASE_ADDRESS_FAMILY_H_
7
8namespace net {
9
10// Enum wrapper around the address family types supported by host resolver
11// procedures.
12enum AddressFamily {
13  ADDRESS_FAMILY_UNSPECIFIED,   // AF_UNSPEC
14  ADDRESS_FAMILY_IPV4,          // AF_INET
15  ADDRESS_FAMILY_IPV6,          // AF_INET6
16  ADDRESS_FAMILY_LAST = ADDRESS_FAMILY_IPV6
17};
18
19// HostResolverFlags is a bitflag enum used by host resolver procedures to
20// determine the value of addrinfo.ai_flags and work around getaddrinfo
21// peculiarities.
22enum {
23  HOST_RESOLVER_CANONNAME = 1 << 0,  // AI_CANONNAME
24  // Hint to the resolver proc that only loopback addresses are configured.
25  HOST_RESOLVER_LOOPBACK_ONLY = 1 << 1,
26  // Indicate the address family was set because no IPv6 support was detected.
27  HOST_RESOLVER_DEFAULT_FAMILY_SET_DUE_TO_NO_IPV6 = 1 << 2,
28  // The resolver should only invoke getaddrinfo, not DnsClient.
29  HOST_RESOLVER_SYSTEM_ONLY = 1 << 3
30};
31typedef int HostResolverFlags;
32
33}  // namespace net
34
35#endif  // NET_BASE_ADDRESS_FAMILY_H_
36