diff options
Diffstat (limited to 'src/common/dns_utils.cpp')
| -rw-r--r-- | src/common/dns_utils.cpp | 28 |
1 files changed, 19 insertions, 9 deletions
diff --git a/src/common/dns_utils.cpp b/src/common/dns_utils.cpp index 06f127c25..1ecdae8ec 100644 --- a/src/common/dns_utils.cpp +++ b/src/common/dns_utils.cpp @@ -36,13 +36,21 @@ #include <boost/filesystem/fstream.hpp> #include <boost/thread/mutex.hpp> #include <boost/thread/thread.hpp> +#include <boost/algorithm/string/join.hpp> using namespace epee; namespace bf = boost::filesystem; #undef MONERO_DEFAULT_LOG_CATEGORY #define MONERO_DEFAULT_LOG_CATEGORY "net.dns" -#define DEFAULT_DNS_PUBLIC_ADDR "8.8.4.4" +static const char *DEFAULT_DNS_PUBLIC_ADDR[] = +{ + "194.150.168.168", // CCC (Germany) + "81.3.27.54", // Lightning Wire Labs (Germany) + "31.3.135.232", // OpenNIC (Switzerland) + "80.67.169.40", // FDN (France) + "209.58.179.186", // Cyberghost (Singapore) +}; static boost::mutex instance_lock; @@ -201,13 +209,13 @@ public: DNSResolver::DNSResolver() : m_data(new DNSResolverData()) { int use_dns_public = 0; - std::string dns_public_addr = DEFAULT_DNS_PUBLIC_ADDR; + std::vector<std::string> dns_public_addr; if (auto res = getenv("DNS_PUBLIC")) { dns_public_addr = tools::dns_utils::parse_dns_public(res); if (!dns_public_addr.empty()) { - MGINFO("Using public DNS server: " << dns_public_addr << " (TCP)"); + MGINFO("Using public DNS server(s): " << boost::join(dns_public_addr, ", ") << " (TCP)"); use_dns_public = 1; } else @@ -221,7 +229,8 @@ DNSResolver::DNSResolver() : m_data(new DNSResolverData()) if (use_dns_public) { - ub_ctx_set_fwd(m_data->m_ub_context, dns_public_addr.c_str()); + for (const auto &ip: dns_public_addr) + ub_ctx_set_fwd(m_data->m_ub_context, ip.c_str()); ub_ctx_set_option(m_data->m_ub_context, string_copy("do-udp:"), string_copy("no")); ub_ctx_set_option(m_data->m_ub_context, string_copy("do-tcp:"), string_copy("yes")); } @@ -526,15 +535,16 @@ bool load_txt_records_from_dns(std::vector<std::string> &good_records, const std return true; } -std::string parse_dns_public(const char *s) +std::vector<std::string> parse_dns_public(const char *s) { unsigned ip0, ip1, ip2, ip3; char c; - std::string dns_public_addr; + std::vector<std::string> dns_public_addr; if (!strcmp(s, "tcp")) { - dns_public_addr = DEFAULT_DNS_PUBLIC_ADDR; - LOG_PRINT_L0("Using default public DNS server: " << dns_public_addr << " (TCP)"); + for (size_t i = 0; i < sizeof(DEFAULT_DNS_PUBLIC_ADDR) / sizeof(DEFAULT_DNS_PUBLIC_ADDR[0]); ++i) + dns_public_addr.push_back(DEFAULT_DNS_PUBLIC_ADDR[i]); + LOG_PRINT_L0("Using default public DNS server(s): " << boost::join(dns_public_addr, ", ") << " (TCP)"); } else if (sscanf(s, "tcp://%u.%u.%u.%u%c", &ip0, &ip1, &ip2, &ip3, &c) == 4) { @@ -544,7 +554,7 @@ std::string parse_dns_public(const char *s) } else { - dns_public_addr = std::string(s + strlen("tcp://")); + dns_public_addr.push_back(std::string(s + strlen("tcp://"))); } } else |