if (NULL != plugin->sockv4)
{
+ /* Find a message ready to send:
+ * Flow delay from other peer is expired or not set (0) */
min_delay = GNUNET_TIME_UNIT_FOREVER_REL;
for (udpw = plugin->ipv4_queue_head; NULL != udpw; udpw = udpw->next)
min_delay = GNUNET_TIME_relative_min (min_delay,
if (plugin->select_task != GNUNET_SCHEDULER_NO_TASK)
GNUNET_SCHEDULER_cancel(plugin->select_task);
+
+ /* Schedule with:
+ * - write active set if message is ready
+ * - timeout minimum delay */
plugin->select_task =
GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
(0 == min_delay.rel_value) ? GNUNET_TIME_UNIT_FOREVER_REL : min_delay,
"Calling continuation for %u byte message to `%s' with result %s\n",
udpw->payload_size, GNUNET_i2s (&udpw->session->target),
(GNUNET_OK == result) ? "OK" : "SYSERR");
- if (NULL != udpw->cont)
- {
- /* Call continuation for fragmented message */
- /*
- * Transport continuation for unfragmented message
- * send_next_fragment for fragmented message
- */
- if (NULL == udpw->frag_ctx)
- {
- /* Not fragmented message */
+
+ if (NULL == udpw->frag_ctx)
+ {
+ /* Not fragmented message */
+ if (GNUNET_OK == result)
+ {
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# unfragmented messages transmit with success via UDP",
+ 1, GNUNET_NO);
if (udpw->msg_size >= udpw->payload_size)
{
GNUNET_STATISTICS_update (plugin->env->stats,
GNUNET_STATISTICS_update (plugin->env->stats,
"# bytes payload transmitted via UDP",
udpw->payload_size, GNUNET_NO);
-
- udpw->cont (udpw->cont_cls, &udpw->session->target, result,
- udpw->payload_size, udpw->msg_size);
- }
- else if (GNUNET_OK == result)
- {
- /* Fragmented message: only call next_fragment continuation on success */
+ }
+ else
+ {
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# unfragmented messages transmit with failure via UDP",
+ 1, GNUNET_NO);
+ }
+ if (NULL != udpw->cont)
udpw->cont (udpw->cont_cls, &udpw->session->target, result,
- udpw->payload_size, udpw->msg_size);
- }
-
+ udpw->payload_size, udpw->msg_size);
+ }
+ else
+ {
+ /* Fragmented message */
+ if (GNUNET_OK == result)
+ {
+ /* Fragmented message: only call next_fragment continuation on success */
+ if (NULL != udpw->cont)
+ udpw->cont (udpw->cont_cls, &udpw->session->target, result,
+ udpw->payload_size, udpw->msg_size);
+ }
}
-
}
}
+static void
+dequeue (struct Plugin *plugin, struct UDP_MessageWrapper * udpw)
+{
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# bytes currently in UDP buffers",
+ -udpw->msg_size, GNUNET_NO);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# msgs currently in UDP buffers",
+ -1, GNUNET_NO);
+ if (udpw->session->addrlen == sizeof (struct sockaddr_in))
+ GNUNET_CONTAINER_DLL_remove (plugin->ipv4_queue_head,
+ plugin->ipv4_queue_tail, udpw);
+ if (udpw->session->addrlen == sizeof (struct sockaddr_in6))
+ GNUNET_CONTAINER_DLL_remove (plugin->ipv6_queue_head,
+ plugin->ipv6_queue_tail, udpw);
+}
+
/**
* Functions with this signature are called whenever we need
* to close a session due to a disconnect or failure to
next = udpw->next;
if (udpw->session == s)
{
- GNUNET_CONTAINER_DLL_remove(plugin->ipv4_queue_head, plugin->ipv4_queue_tail, udpw);
+ dequeue (plugin, udpw);
call_continuation(udpw, GNUNET_SYSERR);
GNUNET_free (udpw);
}
next = udpw->next;
if (udpw->session == s)
{
- GNUNET_CONTAINER_DLL_remove(plugin->ipv6_queue_head, plugin->ipv6_queue_tail, udpw);
+ dequeue (plugin, udpw);
call_continuation(udpw, GNUNET_SYSERR);
GNUNET_free (udpw);
}
s->target = *target;
s->sock_addr = (const struct sockaddr *) &s[1];
s->last_expected_delay = GNUNET_TIME_UNIT_SECONDS;
+ s->flow_delay_from_other_peer = GNUNET_TIME_UNIT_ZERO_ABS;
+ s->flow_delay_for_other_peer = GNUNET_TIME_UNIT_ZERO;
start_session_timeout (s);
return s;
}
&s->target.hashPubKey,
s,
GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE));
-
GNUNET_STATISTICS_set(plugin->env->stats,
"# UDP sessions active",
GNUNET_CONTAINER_multihashmap_size(plugin->sessions),
GNUNET_NO);
-
return s;
}
static void
enqueue (struct Plugin *plugin, struct UDP_MessageWrapper * udpw)
{
-
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# bytes currently in UDP buffers",
+ udpw->msg_size, GNUNET_NO);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# msgs currently in UDP buffers",
+ 1, GNUNET_NO);
if (udpw->session->addrlen == sizeof (struct sockaddr_in))
- GNUNET_CONTAINER_DLL_insert(plugin->ipv4_queue_head, plugin->ipv4_queue_tail, udpw);
+ GNUNET_CONTAINER_DLL_insert (plugin->ipv4_queue_head,
+ plugin->ipv4_queue_tail, udpw);
if (udpw->session->addrlen == sizeof (struct sockaddr_in6))
- GNUNET_CONTAINER_DLL_insert(plugin->ipv6_queue_head, plugin->ipv6_queue_tail, udpw);
+ GNUNET_CONTAINER_DLL_insert (plugin->ipv6_queue_head,
+ plugin->ipv6_queue_tail, udpw);
}
+
/**
* Fragment message was transmitted via UDP, let fragmentation know
* to send the next fragment now.
{
struct Plugin *plugin = cls;
size_t udpmlen = msgbuf_size + sizeof (struct UDPMessage);
+ struct UDP_FragmentationContext * frag_ctx;
struct UDP_MessageWrapper * udpw;
struct UDPMessage *udp;
char mbuf[udpmlen];
GNUNET_i2s (&s->target),
GNUNET_a2s(s->sock_addr, s->addrlen));
- GNUNET_STATISTICS_update (plugin->env->stats,
- "# bytes currently in UDP buffers",
- msgbuf_size, GNUNET_NO);
GNUNET_STATISTICS_update (plugin->env->stats,
"# bytes payload asked to transmit via UDP",
msgbuf_size, GNUNET_NO);
-
/* Message */
udp = (struct UDPMessage *) mbuf;
udp->header.size = htons (udpmlen);
reschedule_session_timeout(s);
if (udpmlen <= UDP_MTU)
{
+ /* unfragmented message */
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# unfragmented messages asked to transmit via UDP",
+ 1, GNUNET_NO);
udpw = GNUNET_malloc (sizeof (struct UDP_MessageWrapper) + udpmlen);
udpw->session = s;
udpw->msg_buf = (char *) &udpw[1];
}
else
{
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "UDP has to fragment message\n");
+ /* fragmented message */
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# fragmented messages asked to transmit via UDP",
+ 1, GNUNET_NO);
if (s->frag_ctx != NULL)
return GNUNET_SYSERR;
memcpy (&udp[1], msgbuf, msgbuf_size);
- struct UDP_FragmentationContext * frag_ctx = GNUNET_malloc(sizeof (struct UDP_FragmentationContext));
-
+ frag_ctx = GNUNET_malloc (sizeof (struct UDP_FragmentationContext));
frag_ctx->plugin = plugin;
frag_ctx->session = s;
frag_ctx->cont = cont;
frag_ctx->cont_cls = cont_cls;
frag_ctx->timeout = GNUNET_TIME_absolute_add(GNUNET_TIME_absolute_get(), to);
frag_ctx->payload_size = msgbuf_size; /* unfragmented message size without UDP overhead */
- frag_ctx->on_wire_size = 0;
+ frag_ctx->on_wire_size = 0; /* bytes with UDP and fragmentation overhead */
frag_ctx->frag = GNUNET_FRAGMENT_context_create (plugin->env->stats,
UDP_MTU,
&plugin->tracker,
delay);
udpw = GNUNET_malloc (sizeof (struct UDP_MessageWrapper) + msize);
udpw->msg_size = msize;
+ udpw->payload_size = 0;
udpw->session = s;
udpw->timeout = GNUNET_TIME_UNIT_FOREVER_ABS;
udpw->msg_buf = (char *)&udpw[1];
udp_ack->sender = *rc->plugin->env->my_identity;
memcpy (&udp_ack[1], msg, ntohs (msg->size));
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# messages ACKs transmitted via UDP",
+ 1, GNUNET_NO);
+
enqueue (rc->plugin, udpw);
}
tmp = udpw->next;
if ((udpw->frag_ctx != NULL) && (udpw->frag_ctx == s->frag_ctx))
{
- GNUNET_CONTAINER_DLL_remove(plugin->ipv6_queue_head, plugin->ipv6_queue_tail, udpw);
+ dequeue (plugin, udpw);
GNUNET_free (udpw);
}
udpw = tmp;
tmp = udpw->next;
if ((udpw->frag_ctx != NULL) && (udpw->frag_ctx == s->frag_ctx))
{
- GNUNET_CONTAINER_DLL_remove(plugin->ipv4_queue_head, plugin->ipv4_queue_tail, udpw);
+ dequeue (plugin, udpw);
GNUNET_free (udpw);
}
udpw = tmp;
s->frag_ctx->on_wire_size - s->frag_ctx->payload_size, GNUNET_NO);
}
-
if (s->frag_ctx->cont != NULL)
{
LOG (GNUNET_ERROR_TYPE_DEBUG,
}
}
-
-static size_t
-udp_select_send (struct Plugin *plugin, struct GNUNET_NETWORK_Handle *sock)
+static struct UDP_MessageWrapper *
+remove_timeout_messages_and_select (struct UDP_MessageWrapper *head,
+ struct GNUNET_NETWORK_Handle *sock)
{
- ssize_t sent;
- size_t slen;
- struct GNUNET_TIME_Absolute max;
struct UDP_MessageWrapper *udpw = NULL;
- static int network_down_error;
-
- if (sock == plugin->sockv4)
- {
- udpw = plugin->ipv4_queue_head;
- }
- else if (sock == plugin->sockv6)
- {
- udpw = plugin->ipv6_queue_head;
- }
- else
- {
- GNUNET_break (0);
- return 0;
- }
-
- const struct sockaddr * sa = udpw->session->sock_addr;
- slen = udpw->session->addrlen;
-
- max = GNUNET_TIME_absolute_max (udpw->timeout, GNUNET_TIME_absolute_get());
+ struct GNUNET_TIME_Relative remaining;
+ udpw = head;
while (udpw != NULL)
{
- if (max.abs_value != udpw->timeout.abs_value)
+ /* Find messages with timeout */
+ remaining = GNUNET_TIME_absolute_get_remaining (udpw->timeout);
+ if (GNUNET_TIME_UNIT_ZERO.rel_value == remaining.rel_value)
{
/* Message timed out */
- call_continuation(udpw, GNUNET_SYSERR);
- if (udpw->frag_ctx != NULL)
+ call_continuation (udpw, GNUNET_SYSERR);
+ if (NULL == udpw->frag_ctx)
{
+ /* Not fragmented message */
LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Fragment for message for peer `%s' with size %u timed out\n",
- GNUNET_i2s(&udpw->session->target), udpw->frag_ctx->payload_size);
- udpw->session->last_expected_delay = GNUNET_FRAGMENT_context_destroy (udpw->frag_ctx->frag);
- GNUNET_free (udpw->frag_ctx);
- udpw->session->frag_ctx = NULL;
+ "Message for peer `%s' with size %u timed out\n",
+ GNUNET_i2s(&udpw->session->target), udpw->payload_size);
}
else
{
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Message for peer `%s' with size %u timed out\n",
- GNUNET_i2s(&udpw->session->target), udpw->payload_size);
+ /* Fragmented message */
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Fragment for message for peer `%s' with size %u timed out\n",
+ GNUNET_i2s(&udpw->session->target), udpw->frag_ctx->payload_size);
+ udpw->session->last_expected_delay = GNUNET_FRAGMENT_context_destroy (udpw->frag_ctx->frag);
+ GNUNET_free (udpw->frag_ctx);
+ udpw->session->frag_ctx = NULL;
}
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# messages dismissed due to timeout",
+ 1, GNUNET_NO);
+ /* Remove message */
if (sock == plugin->sockv4)
{
- GNUNET_CONTAINER_DLL_remove(plugin->ipv4_queue_head, plugin->ipv4_queue_tail, udpw);
+ dequeue (plugin, udpw);
GNUNET_free (udpw);
udpw = plugin->ipv4_queue_head;
}
- else if (sock == plugin->sockv6)
+ if (sock == plugin->sockv6)
{
- GNUNET_CONTAINER_DLL_remove(plugin->ipv6_queue_head, plugin->ipv6_queue_tail, udpw);
+ dequeue (plugin, udpw);
GNUNET_free (udpw);
udpw = plugin->ipv6_queue_head;
}
}
else
{
- struct GNUNET_TIME_Relative delta = GNUNET_TIME_absolute_get_remaining (udpw->session->flow_delay_from_other_peer);
- if (delta.rel_value == 0)
+ /* Message did not time out, check flow delay */
+ remaining = GNUNET_TIME_absolute_get_remaining (udpw->session->flow_delay_from_other_peer);
+ if (GNUNET_TIME_UNIT_ZERO.rel_value == remaining.rel_value)
{
/* this message is not delayed */
LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Message for peer `%s' (%u bytes) is not delayed \n",
- GNUNET_i2s(&udpw->session->target), udpw->payload_size);
- break;
+ "Message for peer `%s' (%u bytes) is not delayed \n",
+ GNUNET_i2s(&udpw->session->target), udpw->payload_size);
+ break; /* Found message to send, break */
}
else
{
- /* this message is delayed, try next */
+ /* Message is delayed, try next */
LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Message for peer `%s' (%u bytes) is delayed for %llu \n",
- GNUNET_i2s(&udpw->session->target), udpw->payload_size, delta);
+ "Message for peer `%s' (%u bytes) is delayed for %llu \n",
+ GNUNET_i2s(&udpw->session->target), udpw->payload_size, remaining.rel_value);
udpw = udpw->next;
}
}
}
+ return udpw;
+}
- if (udpw == NULL)
- {
- /* No message left */
- return 0;
- }
+
+static void
+analyze_send_error (struct Plugin *plugin,
+ const struct sockaddr * sa,
+ socklen_t slen,
+ int error)
+{
+ static int network_down_error;
+ struct GNUNET_ATS_Information type;
+
+ type = plugin->env->get_address_type (plugin->env->cls,sa, slen);
+ if (((GNUNET_ATS_NET_LAN == ntohl(type.value)) || (GNUNET_ATS_NET_WAN == ntohl(type.value))) &&
+ ((ENETUNREACH == errno) || (ENETDOWN == errno)))
+ {
+ if ((network_down_error == GNUNET_NO) && (slen == sizeof (struct sockaddr_in)))
+ {
+ /* IPv4: "Network unreachable" or "Network down"
+ *
+ * This indicates we do not have connectivity
+ */
+ LOG (GNUNET_ERROR_TYPE_WARNING | GNUNET_ERROR_TYPE_BULK,
+ _("UDP could not transmit message to `%s': "
+ "Network seems down, please check your network configuration\n"),
+ GNUNET_a2s (sa, slen));
+ }
+ if ((network_down_error == GNUNET_NO) && (slen == sizeof (struct sockaddr_in6)))
+ {
+ /* IPv6: "Network unreachable" or "Network down"
+ *
+ * This indicates that this system is IPv6 enabled, but does not
+ * have a valid global IPv6 address assigned or we do not have
+ * connectivity
+ */
+
+ LOG (GNUNET_ERROR_TYPE_WARNING | GNUNET_ERROR_TYPE_BULK,
+ _("UDP could not transmit message to `%s': "
+ "Please check your network configuration and disable IPv6 if your "
+ "connection does not have a global IPv6 address\n"),
+ GNUNET_a2s (sa, slen));
+ }
+ }
+ else
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "UDP could not transmit message to `%s': `%s'\n",
+ GNUNET_a2s (sa, slen), STRERROR (error));
+ }
+}
+
+static size_t
+udp_select_send (struct Plugin *plugin, struct GNUNET_NETWORK_Handle *sock)
+{
+ const struct sockaddr * sa;
+ ssize_t sent;
+ socklen_t slen;
+
+ struct UDP_MessageWrapper *udpw = NULL;
+
+ /* Find message to send */
+ udpw = remove_timeout_messages_and_select ((sock == plugin->sockv4) ? plugin->ipv4_queue_head : plugin->ipv6_queue_head,
+ sock);
+ if (NULL == udpw)
+ return 0; /* No message to send */
+
+ sa = udpw->session->sock_addr;
+ slen = udpw->session->addrlen;
sent = GNUNET_NETWORK_socket_sendto (sock, udpw->msg_buf, udpw->msg_size, sa, slen);
if (GNUNET_SYSERR == sent)
{
- const struct GNUNET_ATS_Information type = plugin->env->get_address_type
- (plugin->env->cls,sa, slen);
-
- if (((GNUNET_ATS_NET_LAN == ntohl(type.value)) || (GNUNET_ATS_NET_WAN == ntohl(type.value))) &&
- ((ENETUNREACH == errno) || (ENETDOWN == errno)))
- {
- if ((network_down_error == GNUNET_NO) && (slen == sizeof (struct sockaddr_in)))
- {
- /* IPv4: "Network unreachable" or "Network down"
- *
- * This indicates we do not have connectivity
- */
- LOG (GNUNET_ERROR_TYPE_WARNING | GNUNET_ERROR_TYPE_BULK,
- _("UDP could not transmit message to `%s': "
- "Network seems down, please check your network configuration\n"),
- GNUNET_a2s (sa, slen));
- }
- if ((network_down_error == GNUNET_NO) && (slen == sizeof (struct sockaddr_in6)))
- {
- /* IPv6: "Network unreachable" or "Network down"
- *
- * This indicates that this system is IPv6 enabled, but does not
- * have a valid global IPv6 address assigned or we do not have
- * connectivity
- */
-
- LOG (GNUNET_ERROR_TYPE_WARNING | GNUNET_ERROR_TYPE_BULK,
- _("UDP could not transmit message to `%s': "
- "Please check your network configuration and disable IPv6 if your "
- "connection does not have a global IPv6 address\n"),
- GNUNET_a2s (sa, slen));
- }
- }
- else
- {
- LOG (GNUNET_ERROR_TYPE_WARNING,
- "UDP could not transmit %u-byte message to `%s': `%s'\n",
- (unsigned int) (udpw->payload_size), GNUNET_a2s (sa, slen),
- STRERROR (errno));
- }
+ /* Failure */
+ analyze_send_error (plugin, sa, slen, errno);
call_continuation(udpw, GNUNET_SYSERR);
}
else
{
+ /* Success */
LOG (GNUNET_ERROR_TYPE_DEBUG,
"UDP transmitted %u-byte message to `%s' `%s' (%d: %s)\n",
(unsigned int) (udpw->msg_size), GNUNET_i2s(&udpw->session->target) ,GNUNET_a2s (sa, slen), (int) sent,
"# bytes transmitted via UDP",
sent, GNUNET_NO);
if (NULL != udpw->frag_ctx)
- {
udpw->frag_ctx->on_wire_size += udpw->msg_size;
- }
call_continuation (udpw, GNUNET_OK);
- network_down_error = GNUNET_NO;
}
-
- GNUNET_STATISTICS_update (plugin->env->stats,
- "# bytes currently in UDP buffers",
- -udpw->msg_size, GNUNET_NO);
-
- if (sock == plugin->sockv4)
- GNUNET_CONTAINER_DLL_remove(plugin->ipv4_queue_head, plugin->ipv4_queue_tail, udpw);
- else if (sock == plugin->sockv6)
- GNUNET_CONTAINER_DLL_remove(plugin->ipv6_queue_head, plugin->ipv6_queue_tail, udpw);
+ dequeue (plugin, udpw);
GNUNET_free (udpw);
udpw = NULL;
while (udpw != NULL)
{
struct UDP_MessageWrapper *tmp = udpw->next;
- GNUNET_CONTAINER_DLL_remove(plugin->ipv4_queue_head, plugin->ipv4_queue_tail, udpw);
+ dequeue (plugin, udpw);
call_continuation(udpw, GNUNET_SYSERR);
GNUNET_free (udpw);
+
udpw = tmp;
}
udpw = plugin->ipv6_queue_head;
while (udpw != NULL)
{
struct UDP_MessageWrapper *tmp = udpw->next;
- GNUNET_CONTAINER_DLL_remove(plugin->ipv6_queue_head, plugin->ipv6_queue_tail, udpw);
+ dequeue (plugin, udpw);
call_continuation(udpw, GNUNET_SYSERR);
GNUNET_free (udpw);
+
udpw = tmp;
}
projects / oweals / gnunet.git / blobdiff