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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_ @}*/