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/*
** JNetLib
** Copyright (C) 2000-2001 Nullsoft, Inc.
** Author: Justin Frankel
** File: asyncdns.h - JNL portable asynchronous DNS interface
** License: see jnetlib.h
**
** Usage:
** 1. Create JNL_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).
** 4. enjoy.
*/
#ifndef _ASYNCDNS_H_
#define _ASYNCDNS_H_
class JNL_AsyncDNS
{
public:
JNL_AsyncDNS(int max_cache_entries=64);
~JNL_AsyncDNS();
int resolve(char *hostname, unsigned long *addr); // return 0 on success, 1 on wait, -1 on unresolvable
private:
char m_hostname[256];
unsigned long m_addr;
volatile int m_thread_kill;
HANDLE m_thread;
static DWORD WINAPI _threadfunc(LPVOID _d);
};
#endif //_ASYNCDNS_H_
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