NS-3 based Named Data Networking (NDN) simulator
ndnSIM 2.5: NDN, CCN, CCNx, content centric networks
API Documentation
meta-info.hpp
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5  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
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21 
22 #ifndef NDN_META_INFO_HPP
23 #define NDN_META_INFO_HPP
24 
28 #include "ndn-cxx/util/time.hpp"
29 
30 #include <list>
31 
32 namespace ndn {
33 
34 const time::milliseconds DEFAULT_FRESHNESS_PERIOD = time::milliseconds::zero();
35 
58 class MetaInfo
59 {
60 public:
61  class Error : public tlv::Error
62  {
63  public:
64  using tlv::Error::Error;
65  };
66 
67  MetaInfo();
68 
72  explicit
73  MetaInfo(const Block& block);
74 
75  template<encoding::Tag TAG>
76  size_t
77  wireEncode(EncodingImpl<TAG>& encoder) const;
78 
79  const Block&
80  wireEncode() const;
81 
82  void
83  wireDecode(const Block& wire);
84 
85 public: // getter/setter
90  uint32_t
91  getType() const
92  {
93  return m_type;
94  }
95 
99  MetaInfo&
100  setType(uint32_t type);
101 
106  time::milliseconds
108  {
109  return m_freshnessPeriod;
110  }
111 
115  MetaInfo&
116  setFreshnessPeriod(time::milliseconds freshnessPeriod);
117 
120  const optional<name::Component>&
122  {
123  return m_finalBlockId;
124  }
125 
128  MetaInfo&
129  setFinalBlock(optional<name::Component> finalBlockId);
130 
131 public: // app-defined MetaInfo items
140  const std::list<Block>&
141  getAppMetaInfo() const;
142 
156  MetaInfo&
157  setAppMetaInfo(const std::list<Block>& info);
158 
170  MetaInfo&
171  addAppMetaInfo(const Block& block);
172 
183  bool
184  removeAppMetaInfo(uint32_t tlvType);
185 
199  const Block*
200  findAppMetaInfo(uint32_t tlvType) const;
201 
202 public: // EqualityComparable concept
203  bool
204  operator==(const MetaInfo& other) const;
205 
206  bool
207  operator!=(const MetaInfo& other) const;
208 
209 private:
210  uint32_t m_type;
211  time::milliseconds m_freshnessPeriod;
212  optional<name::Component> m_finalBlockId;
213  std::list<Block> m_appMetaInfo;
214 
215  mutable Block m_wire;
216 };
217 
219 
220 std::ostream&
221 operator<<(std::ostream& os, const MetaInfo& info);
222 
223 inline bool
224 MetaInfo::operator==(const MetaInfo& other) const
225 {
226  return wireEncode() == other.wireEncode();
227 }
228 
229 inline bool
230 MetaInfo::operator!=(const MetaInfo& other) const
231 {
232  return !(*this == other);
233 }
234 
235 } // namespace ndn
236 
237 #endif // NDN_META_INFO_HPP
Copyright (c) 2011-2015 Regents of the University of California.
const Block * findAppMetaInfo(uint32_t tlvType) const
Find a first app-defined MetaInfo item of type tlvType.
Definition: meta-info.cpp:118
MetaInfo & setFinalBlock(optional< name::Component > finalBlockId)
set FinalBlockId
Definition: meta-info.cpp:66
std::ostream & operator<<(std::ostream &os, const Data &data)
Definition: data.cpp:322
Represents a TLV element of NDN packet format.
Definition: block.hpp:42
MetaInfo & setFreshnessPeriod(time::milliseconds freshnessPeriod)
set FreshnessPeriod
Definition: meta-info.cpp:55
uint32_t getType() const
return ContentType
Definition: meta-info.hpp:91
const time::milliseconds DEFAULT_FRESHNESS_PERIOD
Definition: meta-info.hpp:34
MetaInfo & setType(uint32_t type)
set ContentType
Definition: meta-info.cpp:47
bool removeAppMetaInfo(uint32_t tlvType)
Remove a first app-defined MetaInfo item with type tlvType.
Definition: meta-info.cpp:105
const Block & wireEncode() const
Definition: meta-info.cpp:165
A MetaInfo holds the meta info which is signed inside the data packet.
Definition: meta-info.hpp:58
time::milliseconds getFreshnessPeriod() const
return FreshnessPeriod
Definition: meta-info.hpp:107
const optional< name::Component > & getFinalBlock() const
return FinalBlockId
Definition: meta-info.hpp:121
const std::list< Block > & getAppMetaInfo() const
Get all app-defined MetaInfo items.
Definition: meta-info.cpp:74
bool operator!=(const MetaInfo &other) const
Definition: meta-info.hpp:230
size_t wireEncode(EncodingImpl< TAG > &encoder) const
Definition: meta-info.cpp:127
NDN_CXX_DECLARE_WIRE_ENCODE_INSTANTIATIONS(Exclude)
uint64_t tlvType
TLV-TYPE of the field; 0 if field does not exist.
Definition: packet.cpp:62
bool operator==(const MetaInfo &other) const
Definition: meta-info.hpp:224
MetaInfo & setAppMetaInfo(const std::list< Block > &info)
Set app-defined MetaInfo items.
Definition: meta-info.cpp:80
MetaInfo & addAppMetaInfo(const Block &block)
Add an app-defined MetaInfo item.
Definition: meta-info.cpp:93
represents an error in TLV encoding or decoding
Definition: tlv.hpp:52
void wireDecode(const Block &wire)
Definition: meta-info.cpp:181