flywithu/ohmulticastvideoscanner
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Code Issues Releases Wiki Activity

Add multicast join/leave.

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This commit is contained in:
Taeho Oh 2016-01-05 17:57:57 +09:00 committed by Taeho Oh
parent 2e4d9d1587
commit 314472ff38
1 changed files with 65 additions and 2 deletions
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67
omvs_main.c
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@ -8,6 +8,7 @@ static gchar *_omvs_output = "omvs_out.txt";
static gint _omvs_jobs = 1;
static gint _omvs_sleep = 1000;
static gint _omvs_timeout = 10000;
static gboolean _omvs_verbose;
static GOptionEntry _omvs_entries[] =
{
@ -21,6 +22,8 @@ static GOptionEntry _omvs_entries[] =
"Sleep time(milliseconds) between scans", "ms" },
{ "timeout", 't', 0, G_OPTION_ARG_INT, &_omvs_timeout,
"Timeout time(milliseconds) in each scan", "ms" },
{ "verbose", 'v', 0, G_OPTION_ARG_NONE, &_omvs_verbose,
"Be verbose", NULL },
{ NULL }
};
@ -45,14 +48,74 @@ static gpointer _omvs_start_scan_job(gpointer data);
static gpointer _omvs_start_scan_job(gpointer data) {
OMVSScanner *scanner;
GError *error;
GSocket *socket;
GSocketAddress *socket_address;
GInetAddress *inet_address;
gint i;
scanner = (OMVSScanner *)data;
for (i = 0; i < scanner->num_ipaddrs; i++) {
g_print("%p %08x\n", (void *)g_thread_self(), scanner->ipaddrs[i].addr);
socket = g_socket_new(G_SOCKET_FAMILY_IPV4, G_SOCKET_TYPE_DATAGRAM,
G_SOCKET_PROTOCOL_DEFAULT, &error);
if (!socket) {
g_printerr("[%p] can't create socket: %s\n", (void *)g_thread_self(),
error->message);
goto finish_return1;
}
inet_address = g_inet_address_new_any(G_SOCKET_FAMILY_IPV4);
socket_address = g_inet_socket_address_new(inet_address, 0xffff);
g_object_unref(inet_address);
if (!g_socket_bind(socket, socket_address, TRUE, &error)) {
g_printerr("[%p] can't bind socket: %s\n", (void *)g_thread_self(),
error->message);
goto finish_return2;
}
for (i = 0; i < scanner->num_ipaddrs; i++) {
guint8 addr[4];
gchar *addr_str;
GInetAddress *group_address;
addr[0] = (guint8)((scanner->ipaddrs[i].addr >> 24) & 0xff);
addr[1] = (guint8)((scanner->ipaddrs[i].addr >> 16) & 0xff);
addr[2] = (guint8)((scanner->ipaddrs[i].addr >> 8) & 0xff);
addr[3] = (guint8)((scanner->ipaddrs[i].addr >> 0) & 0xff);
addr_str =
g_strdup_printf("%d.%d.%d.%d", addr[0], addr[1], addr[2], addr[3]);
if (_omvs_verbose) {
g_print("[%p] start scanning %s\n", (void *)g_thread_self(), addr_str);
}
group_address = g_inet_address_new_from_string(addr_str);
if (!g_socket_join_multicast_group(
socket, group_address, FALSE, _omvs_net_dev, &error)) {
g_printerr("[%p] can't join %s: %s\n", (void *)g_thread_self(),
addr_str, error->message);
}
g_usleep(_omvs_timeout * 1000);
if (_omvs_verbose) {
g_print("[%p] finish scanning %s\n", (void *)g_thread_self(), addr_str);
}
if (!g_socket_leave_multicast_group(
socket, group_address, FALSE, _omvs_net_dev, &error)) {
g_printerr("[%p] can't leave %s: %s\n", (void *)g_thread_self(),
addr_str, error->message);
}
g_object_unref(group_address);
g_free(addr_str);
g_usleep(_omvs_sleep * 1000);
}
finish_return2:
g_object_unref(socket_address);
g_object_unref(socket);
finish_return1:
return NULL;
}