/
node_sockaddr.h
159 lines (119 loc) Β· 4.58 KB
/
node_sockaddr.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
#ifndef SRC_NODE_SOCKADDR_H_
#define SRC_NODE_SOCKADDR_H_
#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
#include "memory_tracker.h"
#include "node.h"
#include "uv.h"
#include "v8.h"
#include <string>
#include <list>
#include <unordered_map>
namespace node {
class Environment;
class SocketAddress : public MemoryRetainer {
public:
struct Hash {
size_t operator()(const SocketAddress& addr) const;
};
inline bool operator==(const SocketAddress& other) const;
inline bool operator!=(const SocketAddress& other) const;
inline static bool is_numeric_host(const char* hostname);
inline static bool is_numeric_host(const char* hostname, int family);
// Returns true if converting {family, host, port} to *addr succeeded.
static bool ToSockAddr(
int32_t family,
const char* host,
uint32_t port,
sockaddr_storage* addr);
// Returns true if converting {family, host, port} to *addr succeeded.
static bool New(
int32_t family,
const char* host,
uint32_t port,
SocketAddress* addr);
static bool New(
const char* host,
uint32_t port,
SocketAddress* addr);
// Returns the port for an IPv4 or IPv6 address.
inline static int GetPort(const sockaddr* addr);
inline static int GetPort(const sockaddr_storage* addr);
// Returns the numeric host as a string for an IPv4 or IPv6 address.
inline static std::string GetAddress(const sockaddr* addr);
inline static std::string GetAddress(const sockaddr_storage* addr);
// Returns the struct length for an IPv4, IPv6 or UNIX domain.
inline static size_t GetLength(const sockaddr* addr);
inline static size_t GetLength(const sockaddr_storage* addr);
SocketAddress() = default;
inline explicit SocketAddress(const sockaddr* addr);
inline SocketAddress(const SocketAddress& addr);
inline SocketAddress& operator=(const sockaddr* other);
inline SocketAddress& operator=(const SocketAddress& other);
inline const sockaddr& operator*() const;
inline const sockaddr* operator->() const;
inline const sockaddr* data() const;
inline const uint8_t* raw() const;
inline sockaddr* storage();
inline size_t length() const;
inline int family() const;
inline std::string address() const;
inline int port() const;
// If the SocketAddress is an IPv6 address, returns the
// current value of the IPv6 flow label, if set. Otherwise
// returns 0.
inline uint32_t flow_label() const;
// If the SocketAddress is an IPv6 address, sets the
// current value of the IPv6 flow label. If not an
// IPv6 address, set_flow_label is a non-op. It
// is important to note that the flow label,
// while represented as an uint32_t, the flow
// label is strictly limited to 20 bits, and
// this will assert if any value larger than
// 20-bits is specified.
inline void set_flow_label(uint32_t label = 0);
inline void Update(uint8_t* data, size_t len);
static SocketAddress FromSockName(const uv_udp_t& handle);
static SocketAddress FromSockName(const uv_tcp_t& handle);
static SocketAddress FromPeerName(const uv_udp_t& handle);
static SocketAddress FromPeerName(const uv_tcp_t& handle);
inline v8::Local<v8::Object> ToJS(
Environment* env,
v8::Local<v8::Object> obj = v8::Local<v8::Object>()) const;
inline std::string ToString() const;
SET_NO_MEMORY_INFO()
SET_MEMORY_INFO_NAME(SocketAddress)
SET_SELF_SIZE(SocketAddress)
template <typename T>
using Map = std::unordered_map<SocketAddress, T, Hash>;
private:
sockaddr_storage address_;
};
template <typename T>
class SocketAddressLRU : public MemoryRetainer {
public:
using Type = typename T::Type;
inline explicit SocketAddressLRU(size_t max_size);
// If the item already exists, returns a reference to
// the existing item, adjusting items position in the
// LRU. If the item does not exist, emplaces the item
// and returns the new item.
Type* Upsert(const SocketAddress& address);
// Returns a reference to the item if it exists, or
// nullptr. The position in the LRU is not modified.
Type* Peek(const SocketAddress& address) const;
size_t size() const { return map_.size(); }
size_t max_size() const { return max_size_; }
void MemoryInfo(MemoryTracker* tracker) const override;
SET_MEMORY_INFO_NAME(SocketAddressLRU)
SET_SELF_SIZE(SocketAddressLRU)
private:
using Pair = std::pair<SocketAddress, Type>;
using Iterator = typename std::list<Pair>::iterator;
void CheckExpired();
std::list<Pair> list_;
SocketAddress::Map<Iterator> map_;
size_t max_size_;
};
} // namespace node
#endif // NOE_WANT_INTERNALS
#endif // SRC_NODE_SOCKADDR_H_