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-client/lookup.h>
34 #include <avahi-common/simple-watch.h>
35 #include <avahi-common/malloc.h>
36 #include <avahi-common/error.h>
38 static AvahiSimplePoll *simple_poll = NULL;
40 static void resolve_callback(
41 AvahiServiceResolver *r,
42 AvahiIfIndex interface,
43 AvahiProtocol protocol,
44 AvahiResolverEvent event,
48 const char *host_name,
49 const AvahiAddress *address,
52 AvahiLookupResultFlags flags,
57 /* Called whenever a service has been resolved successfully or timed out */
60 case AVAHI_RESOLVER_FAILURE:
61 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))));
64 case AVAHI_RESOLVER_FOUND: {
67 fprintf(stderr, "Service '%s' of type '%s' in domain '%s':\n", name, type, domain);
69 avahi_address_snprint(a, sizeof(a), address);
70 t = avahi_string_list_to_string(txt);
81 avahi_string_list_get_service_cookie(txt),
82 avahi_client_is_service_local(avahi_service_resolver_get_client(r), interface, protocol, name, type, domain),
83 !!(flags & AVAHI_LOOKUP_RESULT_WIDE_AREA),
84 !!(flags & AVAHI_LOOKUP_RESULT_MULTICAST),
85 !!(flags & AVAHI_LOOKUP_RESULT_CACHED));
91 avahi_service_resolver_free(r);
94 static void browse_callback(
95 AvahiServiceBrowser *b,
96 AvahiIfIndex interface,
97 AvahiProtocol protocol,
98 AvahiBrowserEvent event,
102 AvahiLookupResultFlags flags,
105 AvahiClient *c = userdata;
108 /* Called whenever a new services becomes available on the LAN or is removed from the LAN */
111 case AVAHI_BROWSER_FAILURE:
113 fprintf(stderr, "(Browser) %s\n", avahi_strerror(avahi_client_errno(avahi_service_browser_get_client(b))));
114 avahi_simple_poll_quit(simple_poll);
117 case AVAHI_BROWSER_NEW:
118 fprintf(stderr, "(Browser) NEW: service '%s' of type '%s' in domain '%s'\n", name, type, domain);
120 /* We ignore the returned resolver object. In the callback
121 function we free it. If the server is terminated before
122 the callback function is called the server will free
123 the resolver for us. */
125 if (!(avahi_service_resolver_new(c, interface, protocol, name, type, domain, AVAHI_PROTO_UNSPEC, 0, resolve_callback, c)))
126 fprintf(stderr, "Failed to resolve service '%s': %s\n", name, avahi_strerror(avahi_client_errno(c)));
130 case AVAHI_BROWSER_REMOVE:
131 fprintf(stderr, "(Browser) REMOVE: service '%s' of type '%s' in domain '%s'\n", name, type, domain);
134 case AVAHI_BROWSER_ALL_FOR_NOW:
135 case AVAHI_BROWSER_CACHE_EXHAUSTED:
136 fprintf(stderr, "(Browser) %s\n", event == AVAHI_BROWSER_CACHE_EXHAUSTED ? "CACHE_EXHAUSTED" : "ALL_FOR_NOW");
142 static void client_callback(AvahiClient *c, AvahiClientState state, void * userdata) {
145 /* Called whenever the client or server state changes */
147 if (state == AVAHI_CLIENT_DISCONNECTED) {
148 fprintf(stderr, "Server connection terminated.\n");
149 avahi_simple_poll_quit(simple_poll);
153 int main(int argc, char*argv[]) {
154 AvahiClient *client = NULL;
155 AvahiServiceBrowser *sb = NULL;
159 /* Allocate main loop object */
160 if (!(simple_poll = avahi_simple_poll_new())) {
161 fprintf(stderr, "Failed to create simple poll object.\n");
165 /* Allocate a new client */
166 client = avahi_client_new(avahi_simple_poll_get(simple_poll), client_callback, NULL, &error);
168 /* Check wether creating the client object succeeded */
170 fprintf(stderr, "Failed to create client: %s\n", avahi_strerror(error));
174 /* Create the service browser */
175 if (!(sb = avahi_service_browser_new(client, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, "_http._tcp", NULL, 0, browse_callback, client))) {
176 fprintf(stderr, "Failed to create service browser: %s\n", avahi_strerror(avahi_client_errno(client)));
180 /* Run the main loop */
182 if (avahi_simple_poll_iterate(simple_poll, -1) != 0)
191 avahi_service_browser_free(sb);
194 avahi_client_free(client);
197 avahi_simple_poll_free(simple_poll);