text: // Copyright (c) 2009-2012 The Bitcoin developers
  // Distributed under the MIT/X11 software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  #ifndef ANDROMEDA_NETBASE_H
  #define ANDROMEDA_NETBASE_H
  
  #include <string>
  #include <vector>
  
  #include "serialize.h"
  #include "compat.h"
  
  extern int nConnectTimeout;
  extern bool fNameLookup;
  
  #ifdef WIN32
  // In MSVC, this is defined as a macro, undefine it to prevent a compile and link error
  #undef SetPort
  #endif
  
  enum Network
  {
      NET_UNROUTABLE,
      NET_IPV4,
      NET_IPV6,
      NET_TOR,
      NET_I2P,
  
      NET_MAX,
  };
  
  /** IP address (IPv6, or IPv4 using mapped IPv6 range (::FFFF:0:0/96)) */
  class CNetAddr
  {
      protected:
          unsigned char ip[16]; // in network byte order
  
      public:
          CNetAddr();
          CNetAddr(const struct in_addr& ipv4Addr);
          explicit CNetAddr(const char *pszIp, bool fAllowLookup = false);
          explicit CNetAddr(const std::string &strIp, bool fAllowLookup = false);
          void Init();
          void SetIP(const CNetAddr& ip);
          bool SetSpecial(const std::string &strName); // for Tor and I2P addresses
          bool IsIPv4() const;    // IPv4 mapped address (::FFFF:0:0/96, 0.0.0.0/0)
          bool IsIPv6() const;    // IPv6 address (not mapped IPv4, not Tor/I2P)
          bool IsRFC1918() const; // IPv4 private networks (10.0.0.0/8, 192.168.0.0/16, 172.16.0.0/12)
          bool IsRFC3849() const; // IPv6 documentation address (2001:0DB8::/32)
          bool IsRFC3927() const; // IPv4 autoconfig (169.254.0.0/16)
          bool IsRFC3964() const; // IPv6 6to4 tunnelling (2002::/16)
          bool IsRFC4193() const; // IPv6 unique local (FC00::/15)
          bool IsRFC4380() const; // IPv6 Teredo tunnelling (2001::/32)
          bool IsRFC4843() const; // IPv6 ORCHID (2001:10::/28)
          bool IsRFC4862() const; // IPv6 autoconfig (FE80::/64)
          bool IsRFC6052() const; // IPv6 well-known prefix (64:FF9B::/96)
          bool IsRFC6145() const; // IPv6 IPv4-translated address (::FFFF:0:0:0/96)
          bool IsTor() const;
          bool IsI2P() const;
          bool IsLocal() const;
          bool IsRoutable() const;
          bool IsValid() const;
          bool IsMulticast() const;
          enum Network GetNetwork() const;
          std::string ToString() const;
          std::string ToStringIP() const;
          unsigned int GetByte(int n) const;
          uint64_t GetHash() const;
          bool GetInAddr(struct in_addr* pipv4Addr) const;
          std::vector<unsigned char> GetGroup() const;
          int GetReachabilityFrom(const CNetAddr *paddrPartner = NULL) const;
  
          CNetAddr(const struct in6_addr& pipv6Addr);
          bool GetIn6Addr(struct in6_addr* pipv6Addr) const;
  
          friend bool operator==(const CNetAddr& a, const CNetAddr& b);
          friend bool operator!=(const CNetAddr& a, const CNetAddr& b);
          friend bool operator<(const CNetAddr& a, const CNetAddr& b);
  
          IMPLEMENT_SERIALIZE
              (
               READWRITE(FLATDATA(ip));
              )
  };
  
  /** A combination of a network address (CNetAddr) and a (TCP) port */
  class CService : public CNetAddr
  {
      protected:
          unsigned short port; // host order
  
      public:
          CService();
          CService(const CNetAddr& ip, unsigned short port);
          CService(const struct in_addr& ipv4Addr, unsigned short port);
          CService(const struct sockaddr_in& addr);
          explicit CService(const char *pszIpPort, int portDefault, bool fAllowLookup = false);
          explicit CService(const char *pszIpPort, bool fAllowLookup = false);
          explicit CService(const std::string& strIpPort, int portDefault, bool fAllowLookup = false);
          explicit CService(const std::string& strIpPort, bool fAllowLookup = false);
          void Init();
          void SetPort(unsigned short portIn);
          unsigned short GetPort() const;
          bool GetSockAddr(struct sockaddr* paddr, socklen_t *addrlen) const;
          bool SetSockAddr(const struct sockaddr* paddr);
          friend bool operator==(const CService& a, const CService& b);
          friend bool operator!=(const CService& a, const CService& b);
          friend bool operator<(const CService& a, const CService& b);
          std::vector<unsigned char> GetKey() const;
          std::string ToString() const;
          std::string ToStringPort() const;
          std::string ToStringIPPort() const;
  
          CService(const struct in6_addr& ipv6Addr, unsigned short port);
          CService(const struct sockaddr_in6& addr);
  
          IMPLEMENT_SERIALIZE
              (
               CService* pthis = const_cast<CService*>(this);
               READWRITE(FLATDATA(ip));
               unsigned short portN = htons(port);
               READWRITE(portN);
               if (fRead)
                   pthis->port = ntohs(portN);
              )
  };
  
  typedef CService proxyType;
  
  enum Network ParseNetwork(std::string net);
  void SplitHostPort(std::string in, int &portOut, std::string &hostOut);
  bool SetProxy(enum Network net, CService addrProxy);
  bool GetProxy(enum Network net, proxyType &proxyInfoOut);
  bool IsProxy(const CNetAddr &addr);
  bool SetNameProxy(CService addrProxy);
  bool HaveNameProxy();
  bool LookupHost(const char *pszName, std::vector<CNetAddr>& vIP, unsigned int nMaxSolutions = 0, bool fAllowLookup = true);
  bool Lookup(const char *pszName, CService& addr, int portDefault = 0, bool fAllowLookup = true);
  bool Lookup(const char *pszName, std::vector<CService>& vAddr, int portDefault = 0, bool fAllowLookup = true, unsigned int nMaxSolutions = 0);
  bool LookupNumeric(const char *pszName, CService& addr, int portDefault = 0);
  bool ConnectSocket(const CService &addr, SOCKET& hSocketRet, int nTimeout, bool *outProxyConnectionFailed = 0);
  bool ConnectSocketByName(CService &addr, SOCKET& hSocketRet, const char *pszDest, int portDefault, int nTimeout, bool *outProxyConnectionFailed = 0);
  
  #endif
  