inline boost::system::error_code connect(
boost::asio::ip::tcp::socket::lowest_layer_type& socket,
boost::asio::ip::tcp::resolver& resolver,
const url& u, boost::system::error_code& ec)
{
// Create a query that corresponds to the url.
std::ostringstream port_string;
port_string << u.port();
// Get a list of endpoints corresponding to the query.
boost::asio::ip::tcp::resolver::results_type endpoints = resolver.resolve(u.host(), port_string.str(), ec);
if (ec)
return ec;
// Try each endpoint until we successfully establish a connection.
ec = boost::asio::error::host_not_found;
boost::asio::connect(socket, endpoints, ec);
if (ec)
return ec;
// Disable the Nagle algorithm on all sockets.
ec = boost::system::error_code();
socket.set_option(boost::asio::ip::tcp::no_delay(true), ec);
return ec;
}
void do_stop (CompletionCounter)
{
m_journal.debug << "Stopped";
m_stopped = true;
m_work.clear ();
m_resolver.cancel ();
removeReference ();
}
auto dns(Func handler,
boost::asio::ip::tcp::resolver& resolver,
std::string address,
std::string port)
{
boost::asio::ip::tcp::resolver::query query(address, port);
return resolver.async_resolve(query, handler);
}
boost::asio::ip::tcp::resolver::iterator WrapResolve(
boost::asio::ip::tcp::resolver& resolver,
boost::asio::ip::tcp::resolver::query& query,
boost::system::error_code* err)
{
boost::asio::ip::tcp::resolver::iterator resolveIt;
if (err == NULL) {
resolveIt = resolver.resolve(query);
} else {
resolveIt = resolver.resolve(query, *err);
}
//#ifdef STREFLOP_H
// (date of note: 08/22/10)
// something in resolve() is invalidating the FPU flags
streflop::streflop_init<streflop::Simple>();
//#endif
return resolveIt;
}
void connect(const std::string& host, const std::string& port){
auto endpoint_it = _resolver.resolve({host, port});
boost::asio::async_connect(_socket, endpoint_it,
[this](boost::system::error_code ec, boost::asio::ip::tcp::resolver::iterator)
{
if (!ec)
{
doReadHeader();
}
});
}
//-------------------------------------------------------------------------
// Resolver
void do_stop (CompletionCounter)
{
assert (m_stop_called == true);
if (m_stopped.exchange (true) == false)
{
m_work.clear ();
m_resolver.cancel ();
removeReference ();
}
}
void do_work (CompletionCounter)
{
if (m_called_stop.load () == 1)
return;
// We don't have any work to do at this time
if (m_work.empty())
{
m_idle = true;
m_journal.trace << "Sleeping";
return;
}
if (m_work.front().names.empty())
m_work.pop_front();
std::string const name (m_work.front().names.back());
HandlerType handler (m_work.front().handler);
m_work.front().names.pop_back();
HostAndPort const hp (parseName(name));
if (hp.first.empty())
{
m_journal.error <<
"Unable to parse '" << name << "'";
m_io_service.post (m_strand.wrap (boost::bind (
&NameResolverImpl::do_work, this,
CompletionCounter(this))));
return;
}
boost::asio::ip::tcp::resolver::query query (
hp.first, hp.second);
m_resolver.async_resolve (query, boost::bind (
&NameResolverImpl::do_finish, this, name,
boost::asio::placeholders::error, handler,
boost::asio::placeholders::iterator,
CompletionCounter(this)));
}
std::vector < std::string > asio_bindings::single_hostname_to_dns(std::string hostname,
boost::asio::ip::tcp::resolver& resolver_ptr){
std::vector < std::string > output;
try{
boost::asio::ip::tcp::resolver::query query(hostname, "");
boost::asio::ip::tcp::resolver::iterator destination = resolver_ptr.resolve(query);
boost::asio::ip::tcp::resolver::iterator end;
boost::asio::ip::tcp::endpoint endpoint;
while (destination != end){
endpoint = *destination++;
output.push_back(endpoint.address().to_string());
}
} catch(...){
output.push_back("Not resolved");
}
return output;
}
std::vector < std::string > asio_bindings::single_ip_to_dns(std::string ip_address,
boost::asio::ip::tcp::resolver& resolver_ptr){
std::vector < std::string > output;
boost::asio::ip::tcp::endpoint endpoint;
try{
boost::asio::ip::address ip = boost::asio::ip::address::from_string(ip_address);
endpoint.address(ip);
boost::asio::ip::tcp::resolver::iterator destination = resolver_ptr.resolve(endpoint);
boost::asio::ip::tcp::resolver::iterator end;
for (int i=1; destination != end; destination++, i++) {
output.push_back(destination->host_name());
}
} catch(...){
output.push_back("Invalid IP address");
}
return output;
}
void do_work (CompletionCounter)
{
if (m_stop_called == true)
return;
// We don't have any work to do at this time
if (m_work.empty ())
return;
std::string const name (m_work.front ().names.back());
HandlerType handler (m_work.front ().handler);
m_work.front ().names.pop_back ();
if (m_work.front ().names.empty ())
m_work.pop_front();
HostAndPort const hp (parseName (name));
if (hp.first.empty ())
{
JLOG(m_journal.error()) <<
"Unable to parse '" << name << "'";
m_io_service.post (m_strand.wrap (std::bind (
&ResolverAsioImpl::do_work, this,
CompletionCounter (this))));
return;
}
boost::asio::ip::tcp::resolver::query query (
hp.first, hp.second);
m_resolver.async_resolve (query, std::bind (
&ResolverAsioImpl::do_finish, this, name,
std::placeholders::_1, handler,
std::placeholders::_2,
CompletionCounter (this)));
}
void start() {
if (!_cancelled)
_resolver.async_resolve(_q, boost::bind(&FriendConnector::hostResolved, shared_from_this(), asio::placeholders::error, asio::placeholders::iterator));
}