1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
|
/* $Id$ */
/***
This file is part of avahi.
avahi is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
avahi is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with avahi; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#include <glib.h>
#include <avahi-client/client.h>
#include <avahi-common/error.h>
#include <avahi-common/timeval.h>
#include <avahi-glib/glib-watch.h>
#include <avahi-glib/glib-malloc.h>
/* Callback for Avahi API Timeout Event */
static void
avahi_timeout_event (AvahiTimeout *timeout, void *userdata)
{
g_message ("Avahi API Timeout reached!");
}
/* Callback for GLIB API Timeout Event */
static gboolean
avahi_timeout_event_glib (void *userdata)
{
GMainLoop *loop = userdata;
g_message ("GLIB API Timeout reached, quitting main loop!");
/* Quit the application */
g_main_loop_quit (loop);
return FALSE; /* Don't re-schedule timeout event */
}
/* Callback for state changes on the Client */
static void
avahi_client_callback (AvahiClient *client, AvahiClientState state, void *userdata)
{
GMainLoop *loop = userdata;
g_message ("Avahi Client State Change: %d", state);
if (state == AVAHI_CLIENT_DISCONNECTED)
{
/* We we're disconnected from the Daemon */
g_message ("Disconnected from the Avahi Daemon");
/* Quit the application */
g_main_loop_quit (loop);
}
}
int
main (int argc, char *argv[])
{
GMainLoop *loop = NULL;
const AvahiPoll *poll_api;
AvahiGLibPoll *glib_poll;
AvahiClient *client;
struct timeval tv;
const char *version;
int error;
/* Optional: Tell avahi to use g_malloc and g_free */
avahi_set_allocator (avahi_glib_allocator ());
/* Create the GLIB main loop */
loop = g_main_loop_new (NULL, FALSE);
/* Create the GLIB Adaptor */
glib_poll = avahi_glib_poll_new (NULL, G_PRIORITY_DEFAULT);
poll_api = avahi_glib_poll_get (glib_poll);
/* Example, schedule a timeout event with the Avahi API */
avahi_elapse_time (&tv, /* timeval structure */
1000, /* 1 second */
0); /* "jitter" - Random additional delay from 0 to this value */
poll_api->timeout_new (poll_api, /* The AvahiPoll object */
&tv, /* struct timeval indicating when to go activate */
avahi_timeout_event, /* Pointer to function to call */
NULL); /* User data to pass to function */
/* Schedule a timeout event with the glib api */
g_timeout_add (5000, /* 5 seconds */
avahi_timeout_event_glib, /* Pointer to function callback */
loop); /* User data to pass to function */
/* Create a new AvahiClient instance */
client = avahi_client_new (poll_api, /* AvahiPoll object from above */
avahi_client_callback, /* Callback function for Client state changes */
loop, /* User data */
&error); /* Error return */
/* Check the error return code */
if (client == NULL)
{
/* Print out the error string */
g_warning ("Error initializing Avahi: %s", avahi_strerror (error));
goto fail;
}
/* Make a call to get the version string from the daemon */
version = avahi_client_get_version_string (client);
/* Check if the call suceeded */
if (version == NULL)
{
g_warning ("Error getting version string: %s", avahi_strerror (avahi_client_errno (client)));
goto fail;
}
g_message ("Avahi Server Version: %s", version);
/* Start the GLIB Main Loop */
g_main_loop_run (loop);
fail:
/* Clean up */
g_main_loop_unref (loop);
avahi_client_free (client);
avahi_glib_poll_free (glib_poll);
return 0;
}
|
