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/*
* Copyright (c) 2010-2016 Isode Limited.
* All rights reserved.
* See the COPYING file for more information.
*/
#pragma once
#include <deque>
#include <memory>
#include <string>
#include <boost/optional.hpp>
#include <Swiften/Base/API.h>
#include <Swiften/Base/boost_bsignals.h>
#include <Swiften/Network/Connection.h>
#include <Swiften/Network/DomainNameResolveError.h>
#include <Swiften/Network/DomainNameServiceQuery.h>
#include <Swiften/Network/HostAddressPort.h>
#include <Swiften/Network/Timer.h>
namespace Swift {
class DomainNameAddressQuery;
class DomainNameResolver;
class ConnectionFactory;
class TimerFactory;
class SWIFTEN_API Connector : public boost::bsignals::trackable, public std::enable_shared_from_this<Connector> {
public:
typedef std::shared_ptr<Connector> ref;
static Connector::ref create(const std::string& hostname, int port, const boost::optional<std::string>& serviceLookupPrefix, DomainNameResolver* resolver, ConnectionFactory* connectionFactory, TimerFactory* timerFactory) {
return ref(new Connector(hostname, port, serviceLookupPrefix, resolver, connectionFactory, timerFactory));
}
void setTimeoutMilliseconds(int milliseconds);
/**
* Start the connection attempt.
* Note that after calling this method, the caller is responsible for calling #stop()
* if it wants to cancel it. Not doing so can leak references.
*/
void start();
void stop();
boost::signal<void (std::shared_ptr<Connection>, std::shared_ptr<Error>)> onConnectFinished;
private:
Connector(const std::string& hostname, int port, const boost::optional<std::string>& serviceLookupPrefix, DomainNameResolver*, ConnectionFactory*, TimerFactory*);
void handleServiceQueryResult(const std::vector<DomainNameServiceQuery::Result>& result);
void handleAddressQueryResult(const std::vector<HostAddress>& address, boost::optional<DomainNameResolveError> error);
void queryAddress(const std::string& hostname);
void tryNextServiceOrFallback();
void tryNextAddress();
void tryConnect(const HostAddressPort& target);
void handleConnectionConnectFinished(bool error);
void finish(std::shared_ptr<Connection>);
void handleTimeout();
private:
std::string hostname;
int port;
boost::optional<std::string> serviceLookupPrefix;
DomainNameResolver* resolver;
ConnectionFactory* connectionFactory;
TimerFactory* timerFactory;
int timeoutMilliseconds;
std::shared_ptr<Timer> timer;
std::shared_ptr<DomainNameServiceQuery> serviceQuery;
std::deque<DomainNameServiceQuery::Result> serviceQueryResults;
std::shared_ptr<DomainNameAddressQuery> addressQuery;
std::deque<HostAddress> addressQueryResults;
bool queriedAllServices;
std::shared_ptr<Connection> currentConnection;
bool foundSomeDNS;
};
}
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Swift