dns.hpp
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21 
22 #ifndef NDN_NET_DNS_HPP
23 #define NDN_NET_DNS_HPP
24 
25 #include "asio-fwd.hpp"
26 #include "../util/time.hpp"
27 
28 #include <boost/asio/ip/address.hpp>
29 
30 namespace ndn {
31 namespace dns {
32 
33 typedef boost::asio::ip::address IpAddress;
34 typedef function<bool (const IpAddress& address)> AddressSelector;
35 
36 struct AnyAddress
37 {
38  bool
39  operator()(const IpAddress& address) const
40  {
41  return true;
42  }
43 };
44 
45 struct Ipv4Only
46 {
47  bool
48  operator()(const IpAddress& address) const
49  {
50  return address.is_v4();
51  }
52 };
53 
54 struct Ipv6Only
55 {
56  bool
57  operator()(const IpAddress& address) const
58  {
59  return address.is_v6();
60  }
61 };
62 
63 struct Error : public std::runtime_error
64 {
65  explicit
66  Error(const std::string& what)
67  : std::runtime_error(what)
68  {
69  }
70 };
71 
72 typedef function<void (const IpAddress& address)> SuccessCallback;
73 typedef function<void (const std::string& reason)> ErrorCallback;
74 
91 void
92 asyncResolve(const std::string& host,
93  const SuccessCallback& onSuccess,
94  const ErrorCallback& onError,
95  boost::asio::io_service& ioService,
96  const AddressSelector& addressSelector = AnyAddress(),
97  time::nanoseconds timeout = 4_s);
98 
110 IpAddress
111 syncResolve(const std::string& host,
112  boost::asio::io_service& ioService,
113  const AddressSelector& addressSelector = AnyAddress());
114 
115 } // namespace dns
116 } // namespace ndn
117 
118 #endif // NDN_NET_DNS_HPP
Error(const std::string &what)
Definition: dns.hpp:66
Copyright (c) 2013-2017 Regents of the University of California.
Definition: common.hpp:66
bool operator()(const IpAddress &address) const
Definition: dns.hpp:39
function< void(const IpAddress &address)> SuccessCallback
Definition: dns.hpp:72
STL namespace.
bool operator()(const IpAddress &address) const
Definition: dns.hpp:57
IpAddress syncResolve(const std::string &host, boost::asio::io_service &ioService, const AddressSelector &addressSelector)
Synchronously resolve host.
Definition: dns.cpp:145
function< bool(const IpAddress &address)> AddressSelector
Definition: dns.hpp:34
function< void(const std::string &reason)> ErrorCallback
Definition: dns.hpp:73
boost::asio::ip::address IpAddress
Definition: dns.hpp:33
bool operator()(const IpAddress &address) const
Definition: dns.hpp:48
void asyncResolve(const std::string &host, const SuccessCallback &onSuccess, const ErrorCallback &onError, boost::asio::io_service &ioService, const AddressSelector &addressSelector, time::nanoseconds timeout)
Asynchronously resolve host.
Definition: dns.cpp:132