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// Copyright (c) 2014, The Monero Project
// 
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// 
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#include <vector>
#include <string>

namespace tools
{

/**
 * @brief Provides high-level access to DNS resolution
 *
 * This class is designed to provide a high-level abstraction to DNS resolution
 * functionality, including access to TXT records and such.  It will also
 * handle DNSSEC validation of the results.
 */
class DNSResolver
{
public:

  /**
   * @brief Constructs and sets the URI to be resolved
   *
   * @param uri the URI to be resolved
   */
  DNSResolver(const std::string& uri);

  /**
   * @brief gets ipv4 addresses from DNS query
   *
   * returns a vector of all IPv4 "A" records for given URI.
   * If no "A" records found, returns an empty vector.
   *
   * @return vector of strings containing ipv4 addresses
   */
  std::vector<std::string> get_ipv4();

  /**
   * @brief gets ipv6 addresses from DNS query
   *
   * returns a vector of all IPv6 "A" records for given URI.
   * If no "A" records found, returns an empty vector.
   *
   * @return vector of strings containing ipv6 addresses
   */
  std::vector<std::string> get_ipv6();

  /**
   * @brief gets a monero address from the TXT record of the DNS query response
   *
   * returns a monero address string from the TXT record associated with URI
   * if no TXT record present, or no valid monero address in TXT,
   * returns an empty string.
   *
   * @return 
   */
  std::string get_payment_address();

}; // class DNSResolver

}  // namespace tools