gresolver.h

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//
// Copyright (C) 2001-2013 Graeme Walker <graeme_walker@users.sourceforge.net>
// 
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// 
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
// 
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.
// ===

#ifndef G_RESOLVER_H
#define G_RESOLVER_H

#include "gdef.h"
#include "gnet.h"
#include "gresolverinfo.h"
#include "geventhandler.h"
#include "gaddress.h"

namespace GNet
{
        class Resolver ;
        class ResolverImp ;
}

class GNet::Resolver 
{
public:
        explicit Resolver( EventHandler & ) ;

        virtual ~Resolver() ;

        static bool parse( const std::string & in , std::string & host_or_address , std::string & service_or_port ) ;

        bool resolveReq( std::string name , bool udp = false ) ;

        bool resolveReq( std::string host_name, std::string service_name , bool udp = false ) ;

        virtual void resolveCon( bool success, const Address & address ,
                std::string fqdn_or_failure_reason ) ;

        bool busy() const ;

        static std::string resolve( ResolverInfo & host_and_service , bool udp = false ) ;

private:
        void operator=( const Resolver & ) ; // not implemented
        Resolver( const Resolver & ) ; // not implemented
        static unsigned int resolveService( const std::string & , bool , std::string & ) ;
        static std::string resolveHost( const std::string & host_name , unsigned int , ResolverInfo & ) ;

private:
        ResolverImp *m_imp ;
} ;

#endif