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Add IPv6 support

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new cli options (RPC ones also apply to wallet):
  --p2p-bind-ipv6-address (default = "::")
  --p2p-bind-port-ipv6    (default same as ipv4 port for given nettype)
  --rpc-bind-ipv6-address (default = "::1")

  --p2p-use-ipv6          (default false)
  --rpc-use-ipv6          (default false)

  --p2p-require-ipv4      (default true, if ipv4 bind fails and this is
                           true, will not continue even if ipv6 bind
                           successful)
  --rpc-require-ipv4      (default true, description as above)

ipv6 addresses are to be specified as "[xx:xx:xx::xx:xx]:port" except
in the cases of the cli args for bind address.  For those the square
braces can be omitted.
This commit is contained in:
Thomas Winget 2019-04-10 18:34:30 -04:00
parent 8adde33e01
commit 155475d971
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GPG key ID: 58131A160789E630
20 changed files with 805 additions and 113 deletions
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35
contrib/epee/src/net_helper.cpp
View file

@ -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};
}
//////////////////////////////////////////////////////////////////////////

13
contrib/epee/src/net_utils_base.cpp
View file

@ -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; }