Annotation of embedaddon/strongswan/src/libstrongswan/networking/host_resolver.h, revision 1.1.1.1
1.1 misho 1: /*
2: * Copyright (C) 2012 Tobias Brunner
3: * HSR Hochschule fuer Technik Rapperswil
4: *
5: * This program is free software; you can redistribute it and/or modify it
6: * under the terms of the GNU General Public License as published by the
7: * Free Software Foundation; either version 2 of the License, or (at your
8: * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
9: *
10: * This program is distributed in the hope that it will be useful, but
11: * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
12: * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13: * for more details.
14: */
15:
16: /**
17: * @defgroup host_resolver host_resolver
18: * @{ @ingroup networking
19: */
20:
21: #ifndef HOST_RESOLVER_H_
22: #define HOST_RESOLVER_H_
23:
24: #include "host.h"
25:
26: typedef struct host_resolver_t host_resolver_t;
27:
28: /**
29: * Resolve hosts by DNS name but do so in a separate thread (calling
30: * getaddrinfo(3) directly might block indefinitely, or at least a very long
31: * time if no DNS servers are reachable).
32: */
33: struct host_resolver_t {
34:
35: /**
36: * Resolve host from the given DNS name.
37: *
38: * @param name name to lookup
39: * @param family requested address family
40: * @return resolved host or NULL if failed or canceled
41: */
42: host_t *(*resolve)(host_resolver_t *this, char *name, int family);
43:
44: /**
45: * Flush the queue of queries. No new queries will be accepted afterwards.
46: */
47: void (*flush)(host_resolver_t *this);
48:
49: /**
50: * Destroy a host_resolver_t.
51: */
52: void (*destroy)(host_resolver_t *this);
53: };
54:
55: /**
56: * Create a host_resolver_t instance.
57: */
58: host_resolver_t *host_resolver_create();
59:
60: #endif /** HOST_RESOLVER_H_ @}*/
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