4 This file is part of avahi.
6 avahi is free software; you can redistribute it and/or modify it
7 under the terms of the GNU Lesser General Public License as
8 published by the Free Software Foundation; either version 2.1 of the
9 License, or (at your option) any later version.
11 avahi is distributed in the hope that it will be useful, but WITHOUT
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
13 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
14 Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with avahi; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
31 #include <avahi-client/client.h>
32 #include <avahi-common/simple-watch.h>
33 #include <avahi-common/malloc.h>
34 #include <avahi-common/error.h>
36 static AvahiSimplePoll *simple_poll = NULL;
38 static void resolve_callback(
39 AvahiServiceResolver *r,
40 AvahiIfIndex interface,
41 AvahiProtocol protocol,
42 AvahiResolverEvent event,
46 const char *host_name,
47 const AvahiAddress *address,
50 AvahiLookupResultFlags flags,
55 /* Called whenever a service has been resolved successfully or timed out */
58 case AVAHI_RESOLVER_FAILURE:
59 fprintf(stderr, "(Resolver) Failed to resolve service '%s' of type '%s' in domain '%s': %s\n", name, type, domain, avahi_strerror(avahi_client_errno(avahi_service_resolver_get_client(r))));
62 case AVAHI_RESOLVER_FOUND: {
65 fprintf(stderr, "Service '%s' of type '%s' in domain '%s':\n", name, type, domain);
67 avahi_address_snprint(a, sizeof(a), address);
68 t = avahi_string_list_to_string(txt);
79 avahi_string_list_get_service_cookie(txt),
80 avahi_client_is_service_local(avahi_service_resolver_get_client(r), interface, protocol, name, type, domain),
81 !!(flags & AVAHI_LOOKUP_RESULT_WIDE_AREA),
82 !!(flags & AVAHI_LOOKUP_RESULT_MULTICAST),
83 !!(flags & AVAHI_LOOKUP_RESULT_CACHED));
89 avahi_service_resolver_free(r);
92 static void browse_callback(
93 AvahiServiceBrowser *b,
94 AvahiIfIndex interface,
95 AvahiProtocol protocol,
96 AvahiBrowserEvent event,
100 AvahiLookupResultFlags flags,
103 AvahiClient *c = userdata;
106 /* Called whenever a new services becomes available on the LAN or is removed from the LAN */
109 case AVAHI_BROWSER_FAILURE:
111 fprintf(stderr, "(Browser) %s\n", avahi_strerror(avahi_client_errno(avahi_service_browser_get_client(b))));
112 avahi_simple_poll_quit(simple_poll);
115 case AVAHI_BROWSER_NEW:
116 fprintf(stderr, "(Browser) NEW: service '%s' of type '%s' in domain '%s'\n", name, type, domain);
118 /* We ignore the returned resolver object. In the callback
119 function we free it. If the server is terminated before
120 the callback function is called the server will free
121 the resolver for us. */
123 if (!(avahi_service_resolver_new(c, interface, protocol, name, type, domain, AVAHI_PROTO_UNSPEC, 0, resolve_callback, c)))
124 fprintf(stderr, "Failed to resolve service '%s': %s\n", name, avahi_strerror(avahi_client_errno(c)));
128 case AVAHI_BROWSER_REMOVE:
129 fprintf(stderr, "(Browser) REMOVE: service '%s' of type '%s' in domain '%s'\n", name, type, domain);
132 case AVAHI_BROWSER_ALL_FOR_NOW:
133 case AVAHI_BROWSER_CACHE_EXHAUSTED:
134 fprintf(stderr, "(Browser) %s\n", event == AVAHI_BROWSER_CACHE_EXHAUSTED ? "CACHE_EXHAUSTED" : "ALL_FOR_NOW");
140 static void client_callback(AvahiClient *c, AvahiClientState state, void * userdata) {
143 /* Called whenever the client or server state changes */
145 if (state == AVAHI_CLIENT_DISCONNECTED) {
146 fprintf(stderr, "Server connection terminated.\n");
147 avahi_simple_poll_quit(simple_poll);
151 int main(int argc, char*argv[]) {
152 AvahiClient *client = NULL;
153 AvahiServiceBrowser *sb = NULL;
157 /* Allocate main loop object */
158 if (!(simple_poll = avahi_simple_poll_new())) {
159 fprintf(stderr, "Failed to create simple poll object.\n");
163 /* Allocate a new client */
164 client = avahi_client_new(avahi_simple_poll_get(simple_poll), client_callback, NULL, &error);
166 /* Check wether creating the client object succeeded */
168 fprintf(stderr, "Failed to create client: %s\n", avahi_strerror(error));
172 /* Create the service browser */
173 if (!(sb = avahi_service_browser_new(client, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, "_http._tcp", NULL, 0, browse_callback, client))) {
174 fprintf(stderr, "Failed to create service browser: %s\n", avahi_strerror(avahi_client_errno(client)));
178 /* Run the main loop */
180 if (avahi_simple_poll_iterate(simple_poll, -1) != 0)
189 avahi_service_browser_free(sb);
192 avahi_client_free(client);
195 avahi_simple_poll_free(simple_poll);