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- /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
- *
- * The contents of this file are subject to the Netscape Public License
- * Version 1.0 (the "NPL"); you may not use this file except in
- * compliance with the NPL. You may obtain a copy of the NPL at
- * http://www.mozilla.org/NPL/
- *
- * Software distributed under the NPL is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
- * for the specific language governing rights and limitations under the
- * NPL.
- *
- * The Initial Developer of this code under the NPL is Netscape
- * Communications Corporation. Portions created by Netscape are
- * Copyright (C) 1998 Netscape Communications Corporation. All Rights
- * Reserved.
- */
-
-
- /*
- * dns.h --- portable nonblocking DNS for Unix
- * Created: Jamie Zawinski <jwz@netscape.com>, 19-Dec-96.
- */
-
- #ifndef __UNIX_DNS_H__
- #define __UNIX_DNS_H__
-
- /* Kick off an async DNS lookup;
- The returned value is an id representing this transaction;
- the result_callback will be run (in the main process) when we
- have a result. Returns negative if something went wrong.
- If `status' is negative,`result' is an error message.
- If `status' is positive, `result' is a 4-character string of
- the IP address.
- If `status' is 0, then the lookup was prematurely aborted
- via a call to DNS_AbortHostLookup().
- */
- extern int DNS_AsyncLookupHost(const char *name,
- int (*result_callback) (void *id,
- void *closure,
- int status,
- const char *result),
- void *closure,
- void **id_return);
-
- /* Prematurely give up on the given host-lookup transaction.
- The `id' is what was returned by DNS_AsyncLookupHost.
- This causes the result_callback to be called with a negative
- status.
- */
- extern int DNS_AbortHostLookup(void *id);
-
- /* Call this from main() to initialize the async DNS library.
- Returns a file descriptor that should be selected for, or
- negative if something went wrong. Pass it the argc/argv
- that your `main' was called with (it needs these pointers
- in order to give its forked subprocesses sensible names.)
- */
- extern int DNS_SpawnProcess(int argc, char **argv);
-
- /* The main select() loop of your program should call this when the fd
- that was returned by DNS_SpawnProcess comes active. This may cause
- some of the result_callback functions to run.
-
- If this returns negative, then a fatal error has happened, and you
- should close `fd' and not select() for it again. Call gethostbyname()
- in the foreground or something.
- */
- extern int DNS_ServiceProcess(int fd);
-
- #endif /* __UNIX_DNS_H__ */
-