diff options
Diffstat (limited to 'contrib/epee/src')
| -rw-r--r-- | contrib/epee/src/net_helper.cpp | 35 | ||||
| -rw-r--r-- | contrib/epee/src/net_utils_base.cpp | 13 |
2 files changed, 45 insertions, 3 deletions
diff --git a/contrib/epee/src/net_helper.cpp b/contrib/epee/src/net_helper.cpp index 3543f5716..719f1c8e0 100644 --- a/contrib/epee/src/net_helper.cpp +++ b/contrib/epee/src/net_helper.cpp @@ -11,10 +11,39 @@ namespace net_utils ////////////////////////////////////////////////////////////////////////// boost::asio::ip::tcp::resolver resolver(GET_IO_SERVICE(timeout)); boost::asio::ip::tcp::resolver::query query(boost::asio::ip::tcp::v4(), addr, port, boost::asio::ip::tcp::resolver::query::canonical_name); - boost::asio::ip::tcp::resolver::iterator iterator = resolver.resolve(query); + + bool try_ipv6 = false; + boost::asio::ip::tcp::resolver::iterator iterator; boost::asio::ip::tcp::resolver::iterator end; - if(iterator == end) // Documentation states that successful call is guaranteed to be non-empty - throw boost::system::system_error{boost::asio::error::fault, "Failed to resolve " + addr}; + boost::system::error_code resolve_error; + try + { + iterator = resolver.resolve(query, resolve_error); + if(iterator == end) // Documentation states that successful call is guaranteed to be non-empty + { + // if IPv4 resolution fails, try IPv6. Unintentional outgoing IPv6 connections should only + // be possible if for some reason a hostname was given and that hostname fails IPv4 resolution, + // so at least for now there should not be a need for a flag "using ipv6 is ok" + try_ipv6 = true; + } + + } + catch (const boost::system::system_error& e) + { + if (resolve_error != boost::asio::error::host_not_found && + resolve_error != boost::asio::error::host_not_found_try_again) + { + throw; + } + try_ipv6 = true; + } + if (try_ipv6) + { + boost::asio::ip::tcp::resolver::query query6(boost::asio::ip::tcp::v6(), addr, port, boost::asio::ip::tcp::resolver::query::canonical_name); + iterator = resolver.resolve(query6); + if (iterator == end) + throw boost::system::system_error{boost::asio::error::fault, "Failed to resolve " + addr}; + } ////////////////////////////////////////////////////////////////////////// diff --git a/contrib/epee/src/net_utils_base.cpp b/contrib/epee/src/net_utils_base.cpp index b7f07a23b..5cc49cc71 100644 --- a/contrib/epee/src/net_utils_base.cpp +++ b/contrib/epee/src/net_utils_base.cpp @@ -21,6 +21,19 @@ namespace epee { namespace net_utils bool ipv4_network_address::is_loopback() const { return net_utils::is_ip_loopback(ip()); } bool ipv4_network_address::is_local() const { return net_utils::is_ip_local(ip()); } + bool ipv6_network_address::equal(const ipv6_network_address& other) const noexcept + { return is_same_host(other) && port() == other.port(); } + + bool ipv6_network_address::less(const ipv6_network_address& other) const noexcept + { return is_same_host(other) ? port() < other.port() : m_address < other.m_address; } + + std::string ipv6_network_address::str() const + { return std::string("[") + host_str() + "]:" + std::to_string(port()); } + + std::string ipv6_network_address::host_str() const { return m_address.to_string(); } + bool ipv6_network_address::is_loopback() const { return m_address.is_loopback(); } + bool ipv6_network_address::is_local() const { return m_address.is_link_local(); } + bool ipv4_network_subnet::equal(const ipv4_network_subnet& other) const noexcept { return is_same_host(other) && m_mask == other.m_mask; } |