media/mtransport/third_party/nICEr/src/net/nr_resolver.h

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1 /*
2 Copyright (c) 2007, Adobe Systems, Incorporated
3 Copyright (c) 2013, Mozilla
4
5 All rights reserved.
6
7 Redistribution and use in source and binary forms, with or without
8 modification, are permitted provided that the following conditions are
9 met:
10
11 * Redistributions of source code must retain the above copyright
12 notice, this list of conditions and the following disclaimer.
13
14 * Redistributions in binary form must reproduce the above copyright
15 notice, this list of conditions and the following disclaimer in the
16 documentation and/or other materials provided with the distribution.
17
18 * Neither the name of Adobe Systems, Network Resonance, Mozilla nor
19 the names of its contributors may be used to endorse or promote
20 products derived from this software without specific prior written
21 permission.
22
23 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
24 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
25 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
26 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
27 OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
28 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
29 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
30 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
31 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
32 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
33 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 */
35
36 #ifndef _nr_resolver_h
37 #define _nr_resolver_h
38
39 #include "transport_addr.h"
40
41 #define NR_RESOLVE_PROTOCOL_STUN 1
42 #define NR_RESOLVE_PROTOCOL_TURN 2
43
44 typedef struct nr_resolver_resource_ {
45 char *domain_name;
46 UINT2 port;
47 int stun_turn;
48 UCHAR transport_protocol;
49 } nr_resolver_resource;
50
51 typedef struct nr_resolver_vtbl_ {
52 int (*destroy)(void **obj);
53 int (*resolve)(void *obj,
54 nr_resolver_resource *resource,
55 int (*cb)(void *cb_arg, nr_transport_addr *addr),
56 void *cb_arg,
57 void **handle);
58 int (*cancel)(void *obj, void *handle);
59 } nr_resolver_vtbl;
60
61 typedef struct nr_resolver_ {
62 void *obj;
63 nr_resolver_vtbl *vtbl;
64 } nr_resolver;
65
66
67 /*
68 The convention here is that the provider of this interface
69 must generate a void *obj, and a vtbl and then call
70 nr_resolver_create_int() to allocate the generic wrapper
71 object.
72
73 The vtbl must contain implementations for all the functions
74 listed.
75
76 The nr_resolver_destroy() function (and hence vtbl->destroy)
77 will be called when the consumer of the resolver is done
78 with it. That is the signal that it is safe to clean up
79 the resources associated with obj. No other function will
80 be called afterwards.
81 */
82 int nr_resolver_create_int(void *obj, nr_resolver_vtbl *vtbl,
83 nr_resolver **resolverp);
84 int nr_resolver_destroy(nr_resolver **resolverp);
85
86 /* Request resolution of a domain */
87 int nr_resolver_resolve(nr_resolver *resolver,
88 nr_resolver_resource *resource,
89 int (*cb)(void *cb_arg, nr_transport_addr *addr),
90 void *cb_arg,
91 void **handle);
92
93 /* Cancel a requested resolution. No callback will fire. */
94 int nr_resolver_cancel(nr_resolver *resolver, void *handle);
95 #endif

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