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#pragma once
#include <louloulibs.h>
#ifdef CARES_FOUND
#include <network/socket_handler.hpp>
#include <ares.h>
/**
* Manage a socket returned by ares_fds. We do not create, open or close the
* socket ourself: this is done by c-ares. We just call ares_process_fd()
* with the correct parameters, depending on what can be done on that socket
* (Poller reported it to be writable or readeable)
*/
class DNSHandler;
class DNSSocketHandler: public SocketHandler
{
public:
explicit DNSSocketHandler(std::shared_ptr<Poller> poller, DNSHandler& handler, const socket_t socket);
~DNSSocketHandler() = default;
DNSSocketHandler(const DNSSocketHandler&) = delete;
DNSSocketHandler(DNSSocketHandler&&) = delete;
DNSSocketHandler& operator=(const DNSSocketHandler&) = delete;
DNSSocketHandler& operator=(DNSSocketHandler&&) = delete;
/**
* Just call dns_process_fd, c-ares will do its work of send()ing or
* recv()ing the data it wants on that socket.
*/
void on_recv() override final;
void on_send() override final;
/**
* Do nothing, because we are always considered to be connected, since the
* connection is done by c-ares and not by us.
*/
void connect() override final;
/**
* Always true, see the comment for connect()
*/
bool is_connected() const override final;
bool is_connecting() const override final;
void remove_from_poller();
private:
DNSHandler& handler;
};
#endif // CARES_FOUND
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