9fd7d4ef36
git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/trunk@6003 212acab6-be3b-0410-9dea-997c60f758d6
38 lines
1,005 B
C++
38 lines
1,005 B
C++
/*
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** JNetLib
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** Copyright (C) 2000-2001 Nullsoft, Inc.
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** Author: Justin Frankel
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** File: asyncdns.h - JNL portable asynchronous DNS interface
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** License: zlib
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**
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** Usage:
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** 1. Create JNL_AsyncDNS object, optionally with the number of cache entries.
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** 2. call resolve() to resolve a hostname into an address. The return value of
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** resolve is 0 on success (host successfully resolved), 1 on wait (meaning
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** try calling resolve() with the same hostname in a few hundred milliseconds
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** or so), or -1 on error (i.e. the host can't resolve).
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** 4. enjoy.
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*/
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#ifndef _ASYNCDNS_H_
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#define _ASYNCDNS_H_
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class JNL_AsyncDNS
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{
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public:
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JNL_AsyncDNS(int max_cache_entries=64);
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~JNL_AsyncDNS();
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int resolve(char *hostname, unsigned long *addr); // return 0 on success, 1 on wait, -1 on unresolvable
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private:
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char m_hostname[256];
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unsigned long m_addr;
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volatile int m_thread_kill;
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HANDLE m_thread;
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static DWORD WINAPI _threadfunc(LPVOID _d);
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};
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#endif //_ASYNCDNS_H_
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