winamp/Src/Components/wac_network/wac_network_dns.h

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2024-09-24 12:54:57 +00:00
/*
** JNetLib
** Copyright (C) 2000-2007 Nullsoft, Inc.
** Author: Justin Frankel
** File: asyncdns.h - JNL portable asynchronous DNS interface
** License: see jnetlib.h
**
** Usage:
** 1. Create wa::Components::WAC_Network_AsyncDNS object, optionally with the number of cache entries.
** 2. call resolve() to resolve a hostname into an address. The return value of
** resolve is 0 on success (host successfully resolved), 1 on wait (meaning
** try calling resolve() with the same hostname in a few hundred milliseconds
** or so), or -1 on error (i.e. the host can't resolve).
** 3. call reverse() to do reverse dns (ala resolve()).
** 4. enjoy.
*/
#ifndef NULLSOFT_WAC_NETWORK_ASYNCDNS_H
#define NULLSOFT_WAC_NETWORK_ASYNCDNS_H
#include "netinc.h"
#include "wac_network_dns_api.h"
struct cache_entry;
//#define JNL_AUTODNS ((wa::Components::WAC_Network_AsyncDNS *)-1)
//enum
//{
// DNS_RESOLVE_UNRESOLVABLE = -1,
// DNS_RESOLVE_SUCCESS = 0,
// DNS_RESOLVE_WAIT = 1,
//};
//
//enum
//{
// DNS_REVERSE_UNRESOLVABLE = -1,
// DNS_REVERSE_SUCCESS = 0,
// DNS_REVERSE_WAIT = 1,
//};
namespace wa
{
namespace Components
{
class WAC_Network_AsyncDNS : public api_dns
{
public:
WAC_Network_AsyncDNS( int max_cache_entries = 64 );
~WAC_Network_AsyncDNS();
int resolve( const char *hostname, unsigned short port, addrinfo **addr, int sockettype ); // return 0 on success, 1 on wait, -1 on unresolvable
static int resolvenow( const char *hostname, unsigned short port, addrinfo **addr, int sockettype ); // return 0 on success, -1 on unresolvable
private:
cache_entry *m_cache;
int m_cache_size;
volatile int m_thread_kill;
#ifdef _WIN32
HANDLE m_thread;
static unsigned long WINAPI _threadfunc( LPVOID _d );
#else
pthread_t m_thread;
static unsigned int _threadfunc( void *_d );
#endif
void makesurethreadisrunning( void );
protected:
RECVS_DISPATCH;
};
}
}
#endif //!NULLSOFT_WAC_NETWORK_ASYNCDNS_H