static void
udp_ipv4_broadcast_send (void *cls,
const struct GNUNET_SCHEDULER_TaskContext *tc)
{
struct Plugin *plugin = cls;
int sent;
uint16_t msg_size;
char buf[65536] GNUNET_ALIGN;
struct BroadcastAddress *baddr;
plugin->send_ipv4_broadcast_task = GNUNET_SCHEDULER_NO_TASK;
msg_size = prepare_beacon(plugin, (struct UDP_Beacon_Message *) &buf);
sent = 0;
baddr = plugin->ipv4_broadcast_head;
/* just IPv4 */
while ((msg_size > 0) && (baddr != NULL) && (baddr->addrlen == sizeof (struct sockaddr_in)))
{
struct sockaddr_in *addr = (struct sockaddr_in *) baddr->addr;
addr->sin_port = htons (plugin->port);
sent = GNUNET_NETWORK_socket_sendto (plugin->sockv4, &buf, msg_size,
(const struct sockaddr *) addr,
baddr->addrlen);
if (sent == GNUNET_SYSERR)
{
if ((ENETUNREACH == errno) || (ENETDOWN == errno))
{
/* "Network unreachable" or "Network down"
*
* This indicates that we just do not have network connectivity
*/
GNUNET_log (GNUNET_ERROR_TYPE_BULK | GNUNET_ERROR_TYPE_WARNING,
"Network connectivity is down, cannot send beacon!\n");
}
else
GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "sendto");
}
else
{
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Sent HELLO beacon broadcast with %i bytes to address %s\n", sent,
GNUNET_a2s (baddr->addr, baddr->addrlen));
}
baddr = baddr->next;
}
plugin->send_ipv4_broadcast_task =
GNUNET_SCHEDULER_add_delayed (plugin->broadcast_interval,
&udp_ipv4_broadcast_send, plugin);
}
static void
udp_ipv6_broadcast_send (void *cls,
const struct GNUNET_SCHEDULER_TaskContext *tc)
{
struct Plugin *plugin = cls;
int sent;
uint16_t msg_size;
char buf[65536] GNUNET_ALIGN;
plugin->send_ipv6_broadcast_task = GNUNET_SCHEDULER_NO_TASK;
msg_size = prepare_beacon(plugin, (struct UDP_Beacon_Message *) &buf);
sent = 0;
sent = GNUNET_NETWORK_socket_sendto (plugin->sockv6, &buf, msg_size,
(const struct sockaddr *)
&plugin->ipv6_multicast_address,
sizeof (struct sockaddr_in6));
if (sent == GNUNET_SYSERR)
{
if ((ENETUNREACH == errno) || (ENETDOWN == errno))
{
/* "Network unreachable" or "Network down"
*
* This indicates that this system is IPv6 enabled, but does not
* have a valid global IPv6 address assigned
*/
GNUNET_log (GNUNET_ERROR_TYPE_BULK | GNUNET_ERROR_TYPE_WARNING,
"Network connectivity is down, cannot send beacon!\n");
}
else
GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "sendto");
}
else
{
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Sending IPv6 HELLO beacon broadcast with %i bytes to address %s\n",
sent,
GNUNET_a2s ((const struct sockaddr *) &plugin->ipv6_multicast_address,
sizeof (struct sockaddr_in6)));
}
plugin->send_ipv6_broadcast_task =
GNUNET_SCHEDULER_add_delayed (plugin->broadcast_interval,
&udp_ipv6_broadcast_send, plugin);
}
static void
udp_ipv6_broadcast_send (void *cls)
{
struct BroadcastAddress *baddr = cls;
struct Plugin *plugin = baddr->plugin;
ssize_t sent;
uint16_t msg_size;
char buf[65536] GNUNET_ALIGN;
const struct sockaddr_in6 *s6 = (const struct sockaddr_in6 *) baddr->addr;
baddr->broadcast_task = NULL;
msg_size = prepare_beacon(plugin, (struct UDP_Beacon_Message *) &buf);
/* Note: unclear if this actually works to limit the multicast to
the specified interface as we're not (necessarily) using a
link-local multicast group and the kernel suggests that the
scope ID is only respected for link-local addresses; however,
if the scope ID is ignored, the kernel should just multicast
on ALL interfaces, which is merely slightly less efficient;
in that case, we might want to revert to only doing this
once, and not per interface (hard to test...) */
plugin->ipv6_multicast_address.sin6_scope_id = s6->sin6_scope_id;
sent = GNUNET_NETWORK_socket_sendto (plugin->sockv6, &buf, msg_size,
(const struct sockaddr *)
&plugin->ipv6_multicast_address,
sizeof (struct sockaddr_in6));
plugin->ipv6_multicast_address.sin6_scope_id = 0;
if (sent == GNUNET_SYSERR)
{
if ((ENETUNREACH == errno) || (ENETDOWN == errno))
{
/* "Network unreachable" or "Network down"
*
* This indicates that this system is IPv6 enabled, but does not
* have a valid global IPv6 address assigned
*/
GNUNET_log (GNUNET_ERROR_TYPE_BULK | GNUNET_ERROR_TYPE_WARNING,
"Network connectivity is down, cannot send beacon!\n");
}
else
GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "sendto");
}
else
{
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Sending IPv6 HELLO beacon broadcast with %d bytes to address %s\n",
(int) sent,
GNUNET_a2s ((const struct sockaddr *) &plugin->ipv6_multicast_address,
sizeof (struct sockaddr_in6)));
}
#if LINUX
/*
* Cryogenic
*/
if (NULL != baddr->cryogenic_fd)
{
baddr->cryogenic_times.delay_msecs = (plugin->broadcast_interval.rel_value_us/1000.0)*0.5;
baddr->cryogenic_times.timeout_msecs = (plugin->broadcast_interval.rel_value_us/1000.0)*1.5;
if (ioctl(baddr->cryogenic_fd->fd,
PM_SET_DELAY_AND_TIMEOUT,
&baddr->cryogenic_times) < 0)
{
GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "ioctl");
baddr->broadcast_task =
GNUNET_SCHEDULER_add_delayed (plugin->broadcast_interval,
&udp_ipv6_broadcast_send, baddr);
}
else
GNUNET_SCHEDULER_add_write_file (GNUNET_TIME_UNIT_FOREVER_REL,
baddr->cryogenic_fd,
&udp_ipv6_broadcast_send,
baddr);
}
else
#endif
baddr->broadcast_task =
GNUNET_SCHEDULER_add_delayed (plugin->broadcast_interval,
&udp_ipv6_broadcast_send, baddr);
}
static void
udp_ipv4_broadcast_send (void *cls)
{
struct BroadcastAddress *baddr = cls;
struct Plugin *plugin = baddr->plugin;
int sent;
uint16_t msg_size;
char buf[65536] GNUNET_ALIGN;
baddr->broadcast_task = NULL;
msg_size = prepare_beacon(plugin, (struct UDP_Beacon_Message *) &buf);
if (0 != msg_size)
{
struct sockaddr_in *addr = (struct sockaddr_in *) baddr->addr;
addr->sin_port = htons (plugin->port);
sent = GNUNET_NETWORK_socket_sendto (plugin->sockv4, &buf, msg_size,
(const struct sockaddr *) addr,
baddr->addrlen);
if (sent == GNUNET_SYSERR)
{
if ((ENETUNREACH == errno) || (ENETDOWN == errno))
{
/* "Network unreachable" or "Network down"
*
* This indicates that we just do not have network connectivity
*/
GNUNET_log (GNUNET_ERROR_TYPE_BULK | GNUNET_ERROR_TYPE_WARNING,
"Network connectivity is down, cannot send beacon!\n");
}
else
GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "sendto");
}
else
{
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Sent HELLO beacon broadcast with %i bytes to address %s\n", sent,
GNUNET_a2s (baddr->addr, baddr->addrlen));
}
}
#if LINUX
/*
* Cryogenic
*/
if (NULL != baddr->cryogenic_fd)
{
baddr->cryogenic_times.delay_msecs = (plugin->broadcast_interval.rel_value_us/1000.0)*0.5;
baddr->cryogenic_times.timeout_msecs = (plugin->broadcast_interval.rel_value_us/1000.0)*1.5;
if (ioctl(baddr->cryogenic_fd->fd,
PM_SET_DELAY_AND_TIMEOUT,
&baddr->cryogenic_times) < 0)
{
GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "ioctl");
baddr->broadcast_task =
GNUNET_SCHEDULER_add_delayed (plugin->broadcast_interval,
&udp_ipv4_broadcast_send, baddr);
}
else
GNUNET_SCHEDULER_add_write_file (GNUNET_TIME_UNIT_FOREVER_REL,
baddr->cryogenic_fd,
&udp_ipv4_broadcast_send,
baddr);
}
else
#endif
baddr->broadcast_task =
GNUNET_SCHEDULER_add_delayed (plugin->broadcast_interval,
&udp_ipv4_broadcast_send, baddr);
}