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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
No known key found for this signature in database
GPG key ID: 58131A160789E630
20 changed files with 805 additions and 113 deletions
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323
contrib/epee/include/net/abstract_tcp_server2.inl
View file

@ -145,10 +145,18 @@ PRAGMA_WARNING_DISABLE_VS(4355)
boost::system::error_code ec;
auto remote_ep = socket().remote_endpoint(ec);
CHECK_AND_NO_ASSERT_MES(!ec, false, "Failed to get remote endpoint: " << ec.message() << ':' << ec.value());
CHECK_AND_NO_ASSERT_MES(remote_ep.address().is_v4(), false, "IPv6 not supported here");
CHECK_AND_NO_ASSERT_MES(remote_ep.address().is_v4() || remote_ep.address().is_v6(), false, "only IPv4 and IPv6 supported here");
const unsigned long ip_{boost::asio::detail::socket_ops::host_to_network_long(remote_ep.address().to_v4().to_ulong())};
return start(is_income, is_multithreaded, ipv4_network_address{uint32_t(ip_), remote_ep.port()});
if (remote_ep.address().is_v4())
{
const unsigned long ip_ = boost::asio::detail::socket_ops::host_to_network_long(remote_ep.address().to_v4().to_ulong());
return start(is_income, is_multithreaded, ipv4_network_address{uint32_t(ip_), remote_ep.port()});
}
else
{
const auto ip_{remote_ep.address().to_v6()};
return start(is_income, is_multithreaded, ipv6_network_address{ip_, remote_ep.port()});
}
CATCH_ENTRY_L0("connection<t_protocol_handler>::start()", false);
}
//---------------------------------------------------------------------------------
@ -904,12 +912,14 @@ PRAGMA_WARNING_DISABLE_VS(4355)
m_io_service_local_instance(new worker()),
io_service_(m_io_service_local_instance->io_service),
acceptor_(io_service_),
acceptor_ipv6(io_service_),
default_remote(),
m_stop_signal_sent(false), m_port(0),
m_threads_count(0),
m_thread_index(0),
m_connection_type( connection_type ),
new_connection_()
new_connection_(),
new_connection_ipv6()
{
create_server_type_map();
m_thread_name_prefix = "NET";
@ -920,12 +930,14 @@ PRAGMA_WARNING_DISABLE_VS(4355)
m_state(boost::make_shared<typename connection<t_protocol_handler>::shared_state>()),
io_service_(extarnal_io_service),
acceptor_(io_service_),
acceptor_ipv6(io_service_),
default_remote(),
m_stop_signal_sent(false), m_port(0),
m_threads_count(0),
m_thread_index(0),
m_connection_type(connection_type),
new_connection_()
new_connection_(),
new_connection_ipv6()
{
create_server_type_map();
m_thread_name_prefix = "NET";
@ -947,29 +959,92 @@ PRAGMA_WARNING_DISABLE_VS(4355)
}
//---------------------------------------------------------------------------------
template<class t_protocol_handler>
bool boosted_tcp_server<t_protocol_handler>::init_server(uint32_t port, const std::string address, ssl_options_t ssl_options)
bool boosted_tcp_server<t_protocol_handler>::init_server(uint32_t port, const std::string& address,
uint32_t port_ipv6, const std::string& address_ipv6, bool use_ipv6, bool require_ipv4,
ssl_options_t ssl_options)
{
TRY_ENTRY();
m_stop_signal_sent = false;
m_port = port;
m_port_ipv6 = port_ipv6;
m_address = address;
m_address_ipv6 = address_ipv6;
m_use_ipv6 = use_ipv6;
m_require_ipv4 = require_ipv4;
if (ssl_options)
m_state->configure_ssl(std::move(ssl_options));
// Open the acceptor with the option to reuse the address (i.e. SO_REUSEADDR).
boost::asio::ip::tcp::resolver resolver(io_service_);
boost::asio::ip::tcp::resolver::query query(address, boost::lexical_cast<std::string>(port), boost::asio::ip::tcp::resolver::query::canonical_name);
boost::asio::ip::tcp::endpoint endpoint = *resolver.resolve(query);
acceptor_.open(endpoint.protocol());
acceptor_.set_option(boost::asio::ip::tcp::acceptor::reuse_address(true));
acceptor_.bind(endpoint);
acceptor_.listen();
boost::asio::ip::tcp::endpoint binded_endpoint = acceptor_.local_endpoint();
m_port = binded_endpoint.port();
MDEBUG("start accept");
new_connection_.reset(new connection<t_protocol_handler>(io_service_, m_state, m_connection_type, m_state->ssl_options().support));
acceptor_.async_accept(new_connection_->socket(),
boost::bind(&boosted_tcp_server<t_protocol_handler>::handle_accept, this,
boost::asio::placeholders::error));
std::string ipv4_failed = "";
std::string ipv6_failed = "";
try
{
boost::asio::ip::tcp::resolver resolver(io_service_);
boost::asio::ip::tcp::resolver::query query(address, boost::lexical_cast<std::string>(port), boost::asio::ip::tcp::resolver::query::canonical_name);
boost::asio::ip::tcp::endpoint endpoint = *resolver.resolve(query);
acceptor_.open(endpoint.protocol());
// Open the acceptor with the option to reuse the address (i.e. SO_REUSEADDR).
acceptor_.set_option(boost::asio::ip::tcp::acceptor::reuse_address(true));
acceptor_.bind(endpoint);
acceptor_.listen();
boost::asio::ip::tcp::endpoint binded_endpoint = acceptor_.local_endpoint();
m_port = binded_endpoint.port();
MDEBUG("start accept (IPv4)");
new_connection_.reset(new connection<t_protocol_handler>(io_service_, m_state, m_connection_type, m_state->ssl_options().support));
acceptor_.async_accept(new_connection_->socket(),
boost::bind(&boosted_tcp_server<t_protocol_handler>::handle_accept_ipv4, this,
boost::asio::placeholders::error));
}
catch (const std::exception &e)
{
ipv4_failed = e.what();
}
if (ipv4_failed != "")
{
MERROR("Failed to bind IPv4: " << ipv4_failed);
if (require_ipv4)
{
throw std::runtime_error("Failed to bind IPv4 (set to required)");
}
}
if (use_ipv6)
{
try
{
if (port_ipv6 == 0) port_ipv6 = port; // default arg means bind to same port as ipv4
boost::asio::ip::tcp::resolver resolver(io_service_);
boost::asio::ip::tcp::resolver::query query(address_ipv6, boost::lexical_cast<std::string>(port_ipv6), boost::asio::ip::tcp::resolver::query::canonical_name);
boost::asio::ip::tcp::endpoint endpoint = *resolver.resolve(query);
acceptor_ipv6.open(endpoint.protocol());
// Open the acceptor with the option to reuse the address (i.e. SO_REUSEADDR).
acceptor_ipv6.set_option(boost::asio::ip::tcp::acceptor::reuse_address(true));
acceptor_ipv6.set_option(boost::asio::ip::v6_only(true));
acceptor_ipv6.bind(endpoint);
acceptor_ipv6.listen();
boost::asio::ip::tcp::endpoint binded_endpoint = acceptor_ipv6.local_endpoint();
m_port_ipv6 = binded_endpoint.port();
MDEBUG("start accept (IPv6)");
new_connection_ipv6.reset(new connection<t_protocol_handler>(io_service_, m_state, m_connection_type, m_state->ssl_options().support));
acceptor_ipv6.async_accept(new_connection_ipv6->socket(),
boost::bind(&boosted_tcp_server<t_protocol_handler>::handle_accept_ipv6, this,
boost::asio::placeholders::error));
}
catch (const std::exception &e)
{
ipv6_failed = e.what();
}
}
if (use_ipv6 && ipv6_failed != "")
{
MERROR("Failed to bind IPv6: " << ipv6_failed);
if (ipv4_failed != "")
{
throw std::runtime_error("Failed to bind IPv4 and IPv6");
}
}
return true;
}
@ -988,15 +1063,23 @@ PRAGMA_WARNING_DISABLE_VS(4355)
PUSH_WARNINGS
DISABLE_GCC_WARNING(maybe-uninitialized)
template<class t_protocol_handler>
bool boosted_tcp_server<t_protocol_handler>::init_server(const std::string port, const std::string& address, ssl_options_t ssl_options)
bool boosted_tcp_server<t_protocol_handler>::init_server(const std::string port, const std::string& address,
const std::string port_ipv6, const std::string address_ipv6, bool use_ipv6, bool require_ipv4,
ssl_options_t ssl_options)
{
uint32_t p = 0;
uint32_t p_ipv6 = 0;
if (port.size() && !string_tools::get_xtype_from_string(p, port)) {
MERROR("Failed to convert port no = " << port);
return false;
}
return this->init_server(p, address, std::move(ssl_options));
if (port_ipv6.size() && !string_tools::get_xtype_from_string(p_ipv6, port_ipv6)) {
MERROR("Failed to convert port no = " << port_ipv6);
return false;
}
return this->init_server(p, address, p_ipv6, address_ipv6, use_ipv6, require_ipv4, std::move(ssl_options));
}
POP_WARNINGS
//---------------------------------------------------------------------------------
@ -1088,7 +1171,7 @@ POP_WARNINGS
{
//some problems with the listening socket ?..
_dbg1("Net service stopped without stop request, restarting...");
if(!this->init_server(m_port, m_address))
if(!this->init_server(m_port, m_address, m_port_ipv6, m_address_ipv6, m_use_ipv6, m_require_ipv4))
{
_dbg1("Reiniting service failed, exit.");
return false;
@ -1154,29 +1237,52 @@ POP_WARNINGS
}
//---------------------------------------------------------------------------------
template<class t_protocol_handler>
void boosted_tcp_server<t_protocol_handler>::handle_accept(const boost::system::error_code& e)
void boosted_tcp_server<t_protocol_handler>::handle_accept_ipv4(const boost::system::error_code& e)
{
this->handle_accept(e, false);
}
//---------------------------------------------------------------------------------
template<class t_protocol_handler>
void boosted_tcp_server<t_protocol_handler>::handle_accept_ipv6(const boost::system::error_code& e)
{
this->handle_accept(e, true);
}
//---------------------------------------------------------------------------------
template<class t_protocol_handler>
void boosted_tcp_server<t_protocol_handler>::handle_accept(const boost::system::error_code& e, bool ipv6)
{
MDEBUG("handle_accept");
boost::asio::ip::tcp::acceptor* current_acceptor = &acceptor_;
connection_ptr* current_new_connection = &new_connection_;
auto accept_function_pointer = &boosted_tcp_server<t_protocol_handler>::handle_accept_ipv4;
if (ipv6)
{
current_acceptor = &acceptor_ipv6;
current_new_connection = &new_connection_ipv6;
accept_function_pointer = &boosted_tcp_server<t_protocol_handler>::handle_accept_ipv6;
}
try
{
if (!e)
{
if (m_connection_type == e_connection_type_RPC) {
const char *ssl_message = "unknown";
switch (new_connection_->get_ssl_support())
{
case epee::net_utils::ssl_support_t::e_ssl_support_disabled: ssl_message = "disabled"; break;
case epee::net_utils::ssl_support_t::e_ssl_support_enabled: ssl_message = "enabled"; break;
case epee::net_utils::ssl_support_t::e_ssl_support_autodetect: ssl_message = "autodetection"; break;
}
MDEBUG("New server for RPC connections, SSL " << ssl_message);
new_connection_->setRpcStation(); // hopefully this is not needed actually
}
connection_ptr conn(std::move(new_connection_));
new_connection_.reset(new connection<t_protocol_handler>(io_service_, m_state, m_connection_type, conn->get_ssl_support()));
acceptor_.async_accept(new_connection_->socket(),
boost::bind(&boosted_tcp_server<t_protocol_handler>::handle_accept, this,
boost::asio::placeholders::error));
if (m_connection_type == e_connection_type_RPC) {
const char *ssl_message = "unknown";
switch ((*current_new_connection)->get_ssl_support())
{
case epee::net_utils::ssl_support_t::e_ssl_support_disabled: ssl_message = "disabled"; break;
case epee::net_utils::ssl_support_t::e_ssl_support_enabled: ssl_message = "enabled"; break;
case epee::net_utils::ssl_support_t::e_ssl_support_autodetect: ssl_message = "autodetection"; break;
}
MDEBUG("New server for RPC connections, SSL " << ssl_message);
(*current_new_connection)->setRpcStation(); // hopefully this is not needed actually
}
connection_ptr conn(std::move((*current_new_connection)));
(*current_new_connection).reset(new connection<t_protocol_handler>(io_service_, m_state, m_connection_type, conn->get_ssl_support()));
current_acceptor->async_accept((*current_new_connection)->socket(),
boost::bind(accept_function_pointer, this,
boost::asio::placeholders::error));
boost::asio::socket_base::keep_alive opt(true);
conn->socket().set_option(opt);
@ -1208,10 +1314,10 @@ POP_WARNINGS
assert(m_state != nullptr); // always set in constructor
_erro("Some problems at accept: " << e.message() << ", connections_count = " << m_state->sock_count);
misc_utils::sleep_no_w(100);
new_connection_.reset(new connection<t_protocol_handler>(io_service_, m_state, m_connection_type, new_connection_->get_ssl_support()));
acceptor_.async_accept(new_connection_->socket(),
boost::bind(&boosted_tcp_server<t_protocol_handler>::handle_accept, this,
boost::asio::placeholders::error));
(*current_new_connection).reset(new connection<t_protocol_handler>(io_service_, m_state, m_connection_type, (*current_new_connection)->get_ssl_support()));
current_acceptor->async_accept((*current_new_connection)->socket(),
boost::bind(accept_function_pointer, this,
boost::asio::placeholders::error));
}
//---------------------------------------------------------------------------------
template<class t_protocol_handler>
@ -1345,23 +1451,84 @@ POP_WARNINGS
epee::misc_utils::auto_scope_leave_caller scope_exit_handler = epee::misc_utils::create_scope_leave_handler([&](){ CRITICAL_REGION_LOCAL(connections_mutex); connections_.erase(new_connection_l); });
boost::asio::ip::tcp::socket& sock_ = new_connection_l->socket();
//////////////////////////////////////////////////////////////////////////
bool try_ipv6 = false;
boost::asio::ip::tcp::resolver resolver(io_service_);
boost::asio::ip::tcp::resolver::query query(boost::asio::ip::tcp::v4(), adr, port, boost::asio::ip::tcp::resolver::query::canonical_name);
boost::asio::ip::tcp::resolver::iterator iterator = resolver.resolve(query);
boost::system::error_code resolve_error;
boost::asio::ip::tcp::resolver::iterator iterator;
try
{
//resolving ipv4 address as ipv6 throws, catch here and move on
iterator = resolver.resolve(query, resolve_error);
}
catch (const boost::system::system_error& e)
{
if (!m_use_ipv6 || (resolve_error != boost::asio::error::host_not_found &&
resolve_error != boost::asio::error::host_not_found_try_again))
{
throw;
}
try_ipv6 = true;
}
catch (...)
{
throw;
}
std::string bind_ip_to_use;
boost::asio::ip::tcp::resolver::iterator end;
if(iterator == end)
{
_erro("Failed to resolve " << adr);
return false;
if (!m_use_ipv6)
{
_erro("Failed to resolve " << adr);
return false;
}
else
{
try_ipv6 = true;
MINFO("Resolving address as IPv4 failed, trying IPv6");
}
}
else
{
bind_ip_to_use = bind_ip;
}
//////////////////////////////////////////////////////////////////////////
if (try_ipv6)
{
boost::asio::ip::tcp::resolver::query query6(boost::asio::ip::tcp::v6(), adr, port, boost::asio::ip::tcp::resolver::query::canonical_name);
iterator = resolver.resolve(query6, resolve_error);
if(iterator == end)
{
_erro("Failed to resolve " << adr);
return false;
}
else
{
if (bind_ip == "0.0.0.0")
{
bind_ip_to_use = "::";
}
else
{
bind_ip_to_use = "";
}
}
}
LOG_ERROR("Trying connect to " << adr << ":" << port << ", bind_ip = " << bind_ip_to_use);
//boost::asio::ip::tcp::endpoint remote_endpoint(boost::asio::ip::address::from_string(addr.c_str()), port);
boost::asio::ip::tcp::endpoint remote_endpoint(*iterator);
auto try_connect_result = try_connect(new_connection_l, adr, port, sock_, remote_endpoint, bind_ip, conn_timeout, ssl_support);
auto try_connect_result = try_connect(new_connection_l, adr, port, sock_, remote_endpoint, bind_ip_to_use, conn_timeout, ssl_support);
if (try_connect_result == CONNECT_FAILURE)
return false;
if (ssl_support == epee::net_utils::ssl_support_t::e_ssl_support_autodetect && try_connect_result == CONNECT_NO_SSL)
@ -1369,7 +1536,7 @@ POP_WARNINGS
// we connected, but could not connect with SSL, try without
MERROR("SSL handshake failed on an autodetect connection, reconnecting without SSL");
new_connection_l->disable_ssl();
try_connect_result = try_connect(new_connection_l, adr, port, sock_, remote_endpoint, bind_ip, conn_timeout, epee::net_utils::ssl_support_t::e_ssl_support_disabled);
try_connect_result = try_connect(new_connection_l, adr, port, sock_, remote_endpoint, bind_ip_to_use, conn_timeout, epee::net_utils::ssl_support_t::e_ssl_support_disabled);
if (try_connect_result != CONNECT_SUCCESS)
return false;
}
@ -1409,17 +1576,59 @@ POP_WARNINGS
epee::misc_utils::auto_scope_leave_caller scope_exit_handler = epee::misc_utils::create_scope_leave_handler([&](){ CRITICAL_REGION_LOCAL(connections_mutex); connections_.erase(new_connection_l); });
boost::asio::ip::tcp::socket& sock_ = new_connection_l->socket();
//////////////////////////////////////////////////////////////////////////
bool try_ipv6 = false;
boost::asio::ip::tcp::resolver resolver(io_service_);
boost::asio::ip::tcp::resolver::query query(boost::asio::ip::tcp::v4(), adr, port, boost::asio::ip::tcp::resolver::query::canonical_name);
boost::asio::ip::tcp::resolver::iterator iterator = resolver.resolve(query);
boost::system::error_code resolve_error;
boost::asio::ip::tcp::resolver::iterator iterator;
try
{
//resolving ipv4 address as ipv6 throws, catch here and move on
iterator = resolver.resolve(query, resolve_error);
}
catch (const boost::system::system_error& e)
{
if (!m_use_ipv6 || (resolve_error != boost::asio::error::host_not_found &&
resolve_error != boost::asio::error::host_not_found_try_again))
{
throw;
}
try_ipv6 = true;
}
catch (...)
{
throw;
}
boost::asio::ip::tcp::resolver::iterator end;
if(iterator == end)
{
_erro("Failed to resolve " << adr);
return false;
if (!try_ipv6)
{
_erro("Failed to resolve " << adr);
return false;
}
else
{
MINFO("Resolving address as IPv4 failed, trying IPv6");
}
}
//////////////////////////////////////////////////////////////////////////
if (try_ipv6)
{
boost::asio::ip::tcp::resolver::query query6(boost::asio::ip::tcp::v6(), adr, port, boost::asio::ip::tcp::resolver::query::canonical_name);
iterator = resolver.resolve(query6, resolve_error);
if(iterator == end)
{
_erro("Failed to resolve " << adr);
return false;
}
}
boost::asio::ip::tcp::endpoint remote_endpoint(*iterator);
sock_.open(remote_endpoint.protocol());