1 // Copyright (c) 2009-2012 The Bitcoin developers
2 // Distributed under the MIT/X11 software license, see the accompanying
3 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
4 #ifndef BITCOIN_NETBASE_H
5 #define BITCOIN_NETBASE_H
10 #include "serialize.h"
13 extern int nConnectTimeout;
16 // In MSVC, this is defined as a macro, undefine it to prevent a compile and link error
31 extern int nConnectTimeout;
32 extern bool fNameLookup;
34 /** IP address (IPv6, or IPv4 using mapped IPv6 range (::FFFF:0:0/96)) */
38 unsigned char ip[16]; // in network byte order
42 CNetAddr(const struct in_addr& ipv4Addr);
43 explicit CNetAddr(const char *pszIp, bool fAllowLookup = false);
44 explicit CNetAddr(const std::string &strIp, bool fAllowLookup = false);
46 void SetIP(const CNetAddr& ip);
47 bool SetSpecial(const std::string &strName); // for Tor and I2P addresses
48 bool IsIPv4() const; // IPv4 mapped address (::FFFF:0:0/96, 0.0.0.0/0)
49 bool IsIPv6() const; // IPv6 address (not mapped IPv4, not Tor/I2P)
50 bool IsRFC1918() const; // IPv4 private networks (10.0.0.0/8, 192.168.0.0/16, 172.16.0.0/12)
51 bool IsRFC3849() const; // IPv6 documentation address (2001:0DB8::/32)
52 bool IsRFC3927() const; // IPv4 autoconfig (169.254.0.0/16)
53 bool IsRFC3964() const; // IPv6 6to4 tunnelling (2002::/16)
54 bool IsRFC4193() const; // IPv6 unique local (FC00::/15)
55 bool IsRFC4380() const; // IPv6 Teredo tunnelling (2001::/32)
56 bool IsRFC4843() const; // IPv6 ORCHID (2001:10::/28)
57 bool IsRFC4862() const; // IPv6 autoconfig (FE80::/64)
58 bool IsRFC6052() const; // IPv6 well-known prefix (64:FF9B::/96)
59 bool IsRFC6145() const; // IPv6 IPv4-translated address (::FFFF:0:0:0/96)
63 bool IsRoutable() const;
65 bool IsMulticast() const;
66 enum Network GetNetwork() const;
67 std::string ToString() const;
68 std::string ToStringIP() const;
69 uint8_t GetByte(int n) const;
70 uint64_t GetHash() const;
71 bool GetInAddr(struct in_addr* pipv4Addr) const;
72 std::vector<unsigned char> GetGroup() const;
73 int GetReachabilityFrom(const CNetAddr *paddrPartner = NULL) const;
76 CNetAddr(const struct in6_addr& pipv6Addr);
77 bool GetIn6Addr(struct in6_addr* pipv6Addr) const;
80 friend bool operator==(const CNetAddr& a, const CNetAddr& b);
81 friend bool operator!=(const CNetAddr& a, const CNetAddr& b);
82 friend bool operator<(const CNetAddr& a, const CNetAddr& b);
86 READWRITE(FLATDATA(ip));
90 /** A combination of a network address (CNetAddr) and a (TCP) port */
91 class CService : public CNetAddr
94 unsigned short port; // host order
98 CService(const CNetAddr& ip, uint16_t port);
99 CService(const struct in_addr& ipv4Addr, uint16_t port);
100 CService(const struct sockaddr_in& addr);
101 explicit CService(const char *pszIpPort, uint16_t portDefault, bool fAllowLookup = false);
102 explicit CService(const char *pszIpPort, bool fAllowLookup = false);
103 explicit CService(const std::string& strIpPort, uint16_t portDefault, bool fAllowLookup = false);
104 explicit CService(const std::string& strIpPort, bool fAllowLookup = false);
106 void SetPort(uint16_t portIn);
107 unsigned short GetPort() const;
108 bool GetSockAddr(struct sockaddr* paddr, socklen_t *addrlen) const;
109 bool SetSockAddr(const struct sockaddr* paddr);
110 friend bool operator==(const CService& a, const CService& b);
111 friend bool operator!=(const CService& a, const CService& b);
112 friend bool operator<(const CService& a, const CService& b);
113 std::vector<unsigned char> GetKey() const;
114 std::string ToString() const;
115 std::string ToStringPort() const;
116 std::string ToStringIPPort() const;
119 CService(const struct in6_addr& ipv6Addr, uint16_t port);
120 CService(const struct sockaddr_in6& addr);
125 CService* pthis = const_cast<CService*>(this);
126 READWRITE(FLATDATA(ip));
127 unsigned short portN = htons(port);
130 pthis->port = ntohs(portN);
134 typedef std::pair<CService, int> proxyType;
136 enum Network ParseNetwork(std::string net);
137 void SplitHostPort(std::string in, uint16_t &portOut, std::string &hostOut);
138 bool SetProxy(enum Network net, CService addrProxy, int nSocksVersion = 5);
139 bool GetProxy(enum Network net, proxyType &proxyInfoOut);
140 bool IsProxy(const CNetAddr &addr);
141 bool SetNameProxy(CService addrProxy, int nSocksVersion = 5);
142 bool HaveNameProxy();
143 bool LookupHost(const char *pszName, std::vector<CNetAddr>& vIP, unsigned int nMaxSolutions = 0, bool fAllowLookup = true);
144 bool Lookup(const char *pszName, CService& addr, uint16_t portDefault = 0, bool fAllowLookup = true);
145 bool Lookup(const char *pszName, std::vector<CService>& vAddr, uint16_t portDefault = 0, bool fAllowLookup = true, unsigned int nMaxSolutions = 0);
146 bool LookupNumeric(const char *pszName, CService& addr, uint16_t portDefault = 0);
147 bool ConnectSocket(const CService &addr, SOCKET& hSocketRet, int nTimeout = nConnectTimeout);
148 bool ConnectSocketByName(CService &addr, SOCKET& hSocketRet, const char *pszDest, uint16_t portDefault = 0, int nTimeout = nConnectTimeout);
149 /** Close socket and set hSocket to INVALID_SOCKET */
150 bool CloseSocket(SOCKET& hSocket);