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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 unsigned long WINAPI _threadfunc(LPVOID _d);
-
- };
-
- #endif //_ASYNCDNS_H_
-