};
+enum UDP_MessageType
+{
+ UNDEFINED = 0,
+ MSG_FRAGMENTED = 1,
+ MSG_FRAGMENTED_COMPLETE = 2,
+ MSG_UNFRAGMENTED = 3,
+ MSG_ACK = 4,
+ MSG_BEACON = 5
+};
+
struct Session
{
/**
*/
struct GNUNET_PeerIdentity target;
- struct FragmentationContext * frag_ctx;
+ struct UDP_FragmentationContext * frag_ctx;
/**
* Address of the other peer
/**
* expected delay for ACKs
*/
- struct GNUNET_TIME_Relative last_expected_delay;
+ struct GNUNET_TIME_Relative last_expected_ack_delay;
+
+ /**
+ * desired delay between UDP messages
+ */
+ struct GNUNET_TIME_Relative last_expected_msg_delay;
struct GNUNET_ATS_Information ats;
/**
- * Closure for 'process_inbound_tokenized_messages'
+ * Context to send fragmented messages
*/
-struct FragmentationContext
+struct UDP_FragmentationContext
{
- struct FragmentationContext * next;
- struct FragmentationContext * prev;
+ /**
+ * Next in linked list
+ */
+ struct UDP_FragmentationContext * next;
+
+ /**
+ * Previous in linked list
+ */
+ struct UDP_FragmentationContext * prev;
+ /**
+ * The plugin
+ */
struct Plugin * plugin;
+
+ /**
+ * Handle for GNUNET_FRAGMENT context
+ */
struct GNUNET_FRAGMENT_Context * frag;
+
+ /**
+ * The session this fragmentation context belongs to
+ */
struct Session * session;
/**
*/
void *cont_cls;
+ /**
+ * Message timeout
+ */
struct GNUNET_TIME_Absolute timeout;
- size_t bytes_to_send;
+ /**
+ * Payload size of original unfragmented message
+ */
+ size_t payload_size;
+
+ /**
+ * Bytes used to send all fragments on wire including UDP overhead
+ */
+ size_t on_wire_size;
+
+ unsigned int fragments_used;
+
};
-struct UDPMessageWrapper
+struct UDP_MessageWrapper
{
+ /**
+ * Session this message belongs to
+ */
struct Session *session;
- struct UDPMessageWrapper *prev;
- struct UDPMessageWrapper *next;
- char *udp;
/**
- * Function to call upon completion of the transmission.
+ * DLL of messages
+ * previous element
*/
- GNUNET_TRANSPORT_TransmitContinuation cont;
+ struct UDP_MessageWrapper *prev;
/**
- * Closure for 'cont'.
+ * DLL of messages
+ * previous element
*/
- void *cont_cls;
+ struct UDP_MessageWrapper *next;
- struct FragmentationContext *frag_ctx;
+ /**
+ * Message type
+ * According to UDP_MessageType
+ */
+ int msg_type;
+ /**
+ * Message with size msg_size including UDP specific overhead
+ */
+ char *msg_buf;
+
+ /**
+ * Size of UDP message to send including UDP specific overhead
+ */
size_t msg_size;
+ /**
+ * Payload size of original message
+ */
+ size_t payload_size;
+
+ /**
+ * Message timeout
+ */
struct GNUNET_TIME_Absolute timeout;
+
+ /**
+ * Function to call upon completion of the transmission.
+ */
+ GNUNET_TRANSPORT_TransmitContinuation cont;
+
+ /**
+ * Closure for 'cont'.
+ */
+ void *cont_cls;
+
+ /**
+ * Fragmentation context
+ * frag_ctx == NULL if transport <= MTU
+ * frag_ctx != NULL if transport > MTU
+ */
+ struct UDP_FragmentationContext *frag_ctx;
};
stop_session_timeout (struct Session *s);
+/**
+ * (re)schedule select tasks for this plugin.
+ *
+ * @param plugin plugin to reschedule
+ */
+static void
+schedule_select (struct Plugin *plugin)
+{
+ struct GNUNET_TIME_Relative min_delay;
+ struct UDP_MessageWrapper *udpw;
+
+ 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,
+ GNUNET_TIME_absolute_get_remaining (udpw->session->flow_delay_from_other_peer));
+
+ 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,
+ plugin->rs_v4,
+ (0 == min_delay.rel_value) ? plugin->ws_v4 : NULL,
+ &udp_plugin_select, plugin);
+ }
+ if (NULL != plugin->sockv6)
+ {
+ min_delay = GNUNET_TIME_UNIT_FOREVER_REL;
+ for (udpw = plugin->ipv6_queue_head; NULL != udpw; udpw = udpw->next)
+ min_delay = GNUNET_TIME_relative_min (min_delay,
+ GNUNET_TIME_absolute_get_remaining (udpw->session->flow_delay_from_other_peer));
+
+ if (GNUNET_SCHEDULER_NO_TASK != plugin->select_task_v6)
+ GNUNET_SCHEDULER_cancel(plugin->select_task_v6);
+ plugin->select_task_v6 =
+ GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
+ (0 == min_delay.rel_value) ? GNUNET_TIME_UNIT_FOREVER_REL : min_delay,
+ plugin->rs_v6,
+ (0 == min_delay.rel_value) ? plugin->ws_v6 : NULL,
+ &udp_plugin_select_v6, plugin);
+ }
+}
+
/**
* Function called for a quick conversion of the binary address to
static void
-call_continuation (struct UDPMessageWrapper *udpw, int result)
+call_continuation (struct UDP_MessageWrapper *udpw, int result)
{
+ size_t overhead;
+ struct UDP_MessageWrapper dummy;
+
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Calling continuation for %u byte message to `%s' with result %s\n",
- udpw->msg_size, GNUNET_i2s (&udpw->session->target),
+ udpw->payload_size, GNUNET_i2s (&udpw->session->target),
(GNUNET_OK == result) ? "OK" : "SYSERR");
- if (NULL != udpw->cont)
- {
- udpw->cont (udpw->cont_cls, &udpw->session->target,result);
- }
+ if ((udpw->msg_size - udpw->payload_size) >= 0)
+ overhead = udpw->msg_size - udpw->payload_size;
+ else
+ overhead = udpw->msg_size;
+
+ switch (result) {
+ case GNUNET_OK:
+ switch (udpw->msg_type) {
+ case MSG_UNFRAGMENTED:
+ if (NULL != udpw->cont)
+ {
+ /* Transport continuation */
+ udpw->cont (udpw->cont_cls, &udpw->session->target, result,
+ udpw->payload_size, overhead);
+ }
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, unfragmented msgs, messages, sent, success",
+ 1, GNUNET_NO);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, unfragmented msgs, bytes payload, sent, success",
+ udpw->payload_size, GNUNET_NO);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, unfragmented msgs, bytes overhead, sent, success",
+ overhead, GNUNET_NO);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, total, bytes overhead, sent",
+ overhead, GNUNET_NO);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, total, bytes payload, sent",
+ udpw->payload_size, GNUNET_NO);
+ break;
+ case MSG_FRAGMENTED_COMPLETE:
+ GNUNET_assert (NULL != udpw->frag_ctx);
+ if (udpw->frag_ctx->cont != NULL)
+ udpw->frag_ctx->cont (udpw->frag_ctx->cont_cls, &udpw->session->target, GNUNET_OK,
+ udpw->frag_ctx->payload_size, udpw->frag_ctx->on_wire_size);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, fragmented msgs, messages, sent, success",
+ 1, GNUNET_NO);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, fragmented msgs, bytes payload, sent, success",
+ udpw->payload_size, GNUNET_NO);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, fragmented msgs, bytes overhead, sent, success",
+ overhead, GNUNET_NO);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, total, bytes overhead, sent",
+ overhead, GNUNET_NO);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, total, bytes payload, sent",
+ udpw->payload_size, GNUNET_NO);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, fragmented msgs, messages, pending",
+ -1, GNUNET_NO);
+ break;
+ case MSG_FRAGMENTED:
+ /* Fragmented message: enqueue next fragment */
+ if (NULL != udpw->cont)
+ udpw->cont (udpw->cont_cls, &udpw->session->target, result,
+ udpw->payload_size, udpw->msg_size);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, fragmented msgs, fragments, sent, success",
+ 1, GNUNET_NO);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, fragmented msgs, fragments bytes, sent, success",
+ udpw->msg_size, GNUNET_NO);
+ break;
+ case MSG_ACK:
+ /* No continuation */
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, ACK msgs, messages, sent, success",
+ 1, GNUNET_NO);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, ACK msgs, bytes overhead, sent, success",
+ overhead, GNUNET_NO);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, total, bytes overhead, sent",
+ overhead, GNUNET_NO);
+ break;
+ case MSG_BEACON:
+ GNUNET_break (0);
+ break;
+ default:
+ LOG (GNUNET_ERROR_TYPE_ERROR,
+ "ERROR: %u\n", udpw->msg_type);
+ GNUNET_break (0);
+ break;
+ }
+ break;
+ case GNUNET_SYSERR:
+ switch (udpw->msg_type) {
+ case MSG_UNFRAGMENTED:
+ /* Unfragmented message: failed to send */
+ if (NULL != udpw->cont)
+ udpw->cont (udpw->cont_cls, &udpw->session->target, result,
+ udpw->payload_size, overhead);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, unfragmented msgs, messages, sent, failure",
+ 1, GNUNET_NO);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, unfragmented msgs, bytes payload, sent, failure",
+ udpw->payload_size, GNUNET_NO);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, unfragmented msgs, bytes overhead, sent, failure",
+ overhead, GNUNET_NO);
+ break;
+ case MSG_FRAGMENTED_COMPLETE:
+ GNUNET_assert (NULL != udpw->frag_ctx);
+ if (udpw->frag_ctx->cont != NULL)
+ udpw->frag_ctx->cont (udpw->frag_ctx->cont_cls, &udpw->session->target, GNUNET_SYSERR,
+ udpw->frag_ctx->payload_size, udpw->frag_ctx->on_wire_size);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, fragmented msgs, messages, sent, failure",
+ 1, GNUNET_NO);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, fragmented msgs, bytes payload, sent, failure",
+ udpw->payload_size, GNUNET_NO);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, fragmented msgs, bytes payload, sent, failure",
+ overhead, GNUNET_NO);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, fragmented msgs, bytes payload, sent, failure",
+ overhead, GNUNET_NO);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, fragmented msgs, messages, pending",
+ -1, GNUNET_NO);
+ break;
+ case MSG_FRAGMENTED:
+ GNUNET_assert (NULL != udpw->frag_ctx);
+ /* Fragmented message: failed to send */
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, fragmented msgs, fragments, sent, failure",
+ 1, GNUNET_NO);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, fragmented msgs, fragments bytes, sent, failure",
+ udpw->msg_size, GNUNET_NO);
+
+ dummy.msg_type = MSG_FRAGMENTED_COMPLETE;
+ dummy.msg_buf = NULL;
+ dummy.msg_size = udpw->frag_ctx->on_wire_size;
+ dummy.payload_size = udpw->frag_ctx->payload_size;
+ dummy.frag_ctx = udpw->frag_ctx;
+ dummy.session = udpw->session;
+ call_continuation (&dummy, GNUNET_SYSERR);
+
+ break;
+ case MSG_ACK:
+ /* ACK message: failed to send */
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, ACK msgs, messages, sent, failure",
+ 1, GNUNET_NO);
+ break;
+ case MSG_BEACON:
+ /* Beacon message: failed to send */
+ GNUNET_break (0);
+ break;
+ default:
+ GNUNET_break (0);
+ break;
+ }
+ break;
+ default:
+ GNUNET_break (0);
+ break;
+ }
}
static void
free_session (struct Session *s)
{
- if (s->frag_ctx != NULL)
+ if (NULL != s->frag_ctx)
{
- GNUNET_FRAGMENT_context_destroy(s->frag_ctx->frag);
+ GNUNET_FRAGMENT_context_destroy(s->frag_ctx->frag, NULL, NULL);
GNUNET_free (s->frag_ctx);
s->frag_ctx = NULL;
}
}
+static void
+dequeue (struct Plugin *plugin, struct UDP_MessageWrapper * udpw)
+{
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, total, bytes in buffers",
+ -udpw->msg_size, GNUNET_NO);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, total, msgs in 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);
+}
+
+static void
+fragmented_message_done (struct UDP_FragmentationContext *fc, int result)
+{
+ struct UDP_MessageWrapper *udpw;
+ struct UDP_MessageWrapper *tmp;
+ struct UDP_MessageWrapper dummy;
+ struct Session *s = fc->session;
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "%p : Fragmented message removed with result %s\n", fc, (result == GNUNET_SYSERR) ? "FAIL" : "SUCCESS");
+
+ /* Call continuation for fragmented message */
+ dummy.msg_type = MSG_FRAGMENTED_COMPLETE;
+ dummy.msg_buf = NULL;
+ dummy.msg_size = s->frag_ctx->on_wire_size;
+ dummy.payload_size = s->frag_ctx->payload_size;
+ dummy.frag_ctx = s->frag_ctx;
+ dummy.session = s;
+
+ call_continuation (&dummy, result);
+
+ /* Remove left-over fragments from queue */
+ /* Remove leftover fragments from queue */
+ if (s->addrlen == sizeof (struct sockaddr_in6))
+ {
+ udpw = plugin->ipv6_queue_head;
+ while (NULL != udpw)
+ {
+ tmp = udpw->next;
+ if ((udpw->frag_ctx != NULL) && (udpw->frag_ctx == s->frag_ctx))
+ {
+ dequeue (plugin, udpw);
+ call_continuation (udpw, GNUNET_SYSERR);
+ GNUNET_free (udpw);
+ }
+ udpw = tmp;
+ }
+ }
+ if (s->addrlen == sizeof (struct sockaddr_in))
+ {
+ udpw = plugin->ipv4_queue_head;
+ while (udpw!= NULL)
+ {
+ tmp = udpw->next;
+ if ((NULL != udpw->frag_ctx) && (udpw->frag_ctx == s->frag_ctx))
+ {
+ dequeue (plugin, udpw);
+ call_continuation (udpw, GNUNET_SYSERR);
+ GNUNET_free (udpw);
+ }
+ udpw = tmp;
+ }
+ }
+
+ /* Destroy fragmentation context */
+ GNUNET_FRAGMENT_context_destroy (fc->frag,
+ &s->last_expected_msg_delay,
+ &s->last_expected_ack_delay);
+ s->frag_ctx = NULL;
+ GNUNET_free (fc);
+}
+
/**
* Functions with this signature are called whenever we need
* to close a session due to a disconnect or failure to
static void
disconnect_session (struct Session *s)
{
- struct UDPMessageWrapper *udpw;
- struct UDPMessageWrapper *next;
+ struct UDP_MessageWrapper *udpw;
+ struct UDP_MessageWrapper *next;
GNUNET_assert (GNUNET_YES != s->in_destroy);
LOG (GNUNET_ERROR_TYPE_DEBUG,
GNUNET_i2s (&s->target),
GNUNET_a2s (s->sock_addr, s->addrlen));
stop_session_timeout (s);
+
+ if (NULL != s->frag_ctx)
+ {
+ /* Remove fragmented message due to disconnect */
+ fragmented_message_done (s->frag_ctx, GNUNET_SYSERR);
+ }
+
next = plugin->ipv4_queue_head;
while (NULL != (udpw = next))
{
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);
}
{
if (NULL != s->frag_ctx->cont)
{
- s->frag_ctx->cont (s->frag_ctx->cont_cls, &s->target, GNUNET_SYSERR);
+ s->frag_ctx->cont (s->frag_ctx->cont_cls, &s->target, GNUNET_SYSERR,
+ s->frag_ctx->payload_size, s->frag_ctx->on_wire_size);
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Calling continuation for fragemented message to `%s' with result SYSERR\n",
GNUNET_i2s (&s->target));
&s->target.hashPubKey,
s));
GNUNET_STATISTICS_set(plugin->env->stats,
- "# UDP sessions active",
+ "# UDP, sessions active",
GNUNET_CONTAINER_multihashmap_size(plugin->sessions),
GNUNET_NO);
if (s->rc > 0)
}
+/**
+ * Session was idle, so disconnect it
+ */
+static void
+session_timeout (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ GNUNET_assert (NULL != cls);
+ struct Session *s = cls;
+
+ s->timeout_task = GNUNET_SCHEDULER_NO_TASK;
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Session %p was idle for %llu ms, disconnecting\n",
+ s, (unsigned long long) GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value);
+ /* call session destroy function */
+ disconnect_session (s);
+}
+
+
+/**
+ * Start session timeout
+ */
+static void
+start_session_timeout (struct Session *s)
+{
+ GNUNET_assert (NULL != s);
+ GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == s->timeout_task);
+ s->timeout_task = GNUNET_SCHEDULER_add_delayed (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT,
+ &session_timeout,
+ s);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Timeout for session %p set to %llu ms\n",
+ s, (unsigned long long) GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value);
+}
+
+
+/**
+ * Increment session timeout due to activity
+ */
+static void
+reschedule_session_timeout (struct Session *s)
+{
+ GNUNET_assert (NULL != s);
+ GNUNET_assert (GNUNET_SCHEDULER_NO_TASK != s->timeout_task);
+
+ GNUNET_SCHEDULER_cancel (s->timeout_task);
+ s->timeout_task = GNUNET_SCHEDULER_add_delayed (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT,
+ &session_timeout,
+ s);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Timeout rescheduled for session %p set to %llu ms\n",
+ s, (unsigned long long) GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value);
+}
+
+
+/**
+ * Cancel timeout
+ */
+static void
+stop_session_timeout (struct Session *s)
+{
+ GNUNET_assert (NULL != s);
+
+ if (GNUNET_SCHEDULER_NO_TASK != s->timeout_task)
+ {
+ GNUNET_SCHEDULER_cancel (s->timeout_task);
+ s->timeout_task = GNUNET_SCHEDULER_NO_TASK;
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Timeout stopped for session %p canceled\n",
+ s, (unsigned long long) GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value);
+ }
+}
+
+
static struct Session *
create_session (struct Plugin *plugin, const struct GNUNET_PeerIdentity *target,
const void *addr, size_t addrlen,
s->addrlen = len;
s->target = *target;
s->sock_addr = (const struct sockaddr *) &s[1];
- s->last_expected_delay = GNUNET_TIME_UNIT_SECONDS;
- start_session_timeout(s);
+ s->last_expected_ack_delay = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS, 250);
+ s->last_expected_msg_delay = GNUNET_TIME_UNIT_MILLISECONDS;
+ 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",
+ "# UDP, sessions active",
GNUNET_CONTAINER_multihashmap_size(plugin->sessions),
GNUNET_NO);
-
return s;
}
static void
-enqueue (struct Plugin *plugin, struct UDPMessageWrapper * udpw)
+enqueue (struct Plugin *plugin, struct UDP_MessageWrapper * udpw)
{
-
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, total, bytes in buffers",
+ udpw->msg_size, GNUNET_NO);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, total, msgs in 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.
* @param cls the 'struct UDPMessageWrapper' of the fragment
* @param target destination peer (ignored)
* @param result GNUNET_OK on success (ignored)
+ * @param payload bytes payload sent
+ * @param physical bytes physical sent
*/
static void
send_next_fragment (void *cls,
const struct GNUNET_PeerIdentity *target,
- int result)
+ int result, size_t payload, size_t physical)
{
- struct UDPMessageWrapper *udpw = cls;
-
+ struct UDP_MessageWrapper *udpw = cls;
GNUNET_FRAGMENT_context_transmission_done (udpw->frag_ctx->frag);
}
static void
enqueue_fragment (void *cls, const struct GNUNET_MessageHeader *msg)
{
- struct FragmentationContext *frag_ctx = cls;
+ struct UDP_FragmentationContext *frag_ctx = cls;
struct Plugin *plugin = frag_ctx->plugin;
- struct UDPMessageWrapper * udpw;
- struct Session *s;
+ struct UDP_MessageWrapper * udpw;
size_t msg_len = ntohs (msg->size);
-
+
LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Enqueuing fragment with %u bytes %u\n", msg_len , sizeof (struct UDPMessageWrapper));
- udpw = GNUNET_malloc (sizeof (struct UDPMessageWrapper) + msg_len);
+ "Enqueuing fragment with %u bytes\n", msg_len);
+ frag_ctx->fragments_used ++;
+ udpw = GNUNET_malloc (sizeof (struct UDP_MessageWrapper) + msg_len);
udpw->session = frag_ctx->session;
- s = udpw->session;
- udpw->udp = (char *) &udpw[1];
-
+ udpw->msg_buf = (char *) &udpw[1];
udpw->msg_size = msg_len;
+ udpw->payload_size = msg_len; /*FIXME: minus fragment overhead */
udpw->cont = &send_next_fragment;
udpw->cont_cls = udpw;
udpw->timeout = frag_ctx->timeout;
udpw->frag_ctx = frag_ctx;
- memcpy (udpw->udp, msg, msg_len);
+ udpw->msg_type = MSG_FRAGMENTED;
+ memcpy (udpw->msg_buf, msg, msg_len);
enqueue (plugin, udpw);
-
- if (s->addrlen == sizeof (struct sockaddr_in))
- {
- if (plugin->with_v4_ws == GNUNET_NO)
- {
- if (plugin->select_task != GNUNET_SCHEDULER_NO_TASK)
- GNUNET_SCHEDULER_cancel(plugin->select_task);
-
- plugin->select_task =
- GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
- GNUNET_TIME_UNIT_FOREVER_REL,
- plugin->rs_v4,
- plugin->ws_v4,
- &udp_plugin_select, plugin);
- plugin->with_v4_ws = GNUNET_YES;
- }
- }
- else if (s->addrlen == sizeof (struct sockaddr_in6))
- {
- if (plugin->with_v6_ws == GNUNET_NO)
- {
- if (plugin->select_task_v6 != GNUNET_SCHEDULER_NO_TASK)
- GNUNET_SCHEDULER_cancel(plugin->select_task_v6);
-
- plugin->select_task_v6 =
- GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
- GNUNET_TIME_UNIT_FOREVER_REL,
- plugin->rs_v6,
- plugin->ws_v6,
- &udp_plugin_select_v6, plugin);
- plugin->with_v6_ws = GNUNET_YES;
- }
- }
+ schedule_select (plugin);
}
GNUNET_TRANSPORT_TransmitContinuation cont, void *cont_cls)
{
struct Plugin *plugin = cls;
- size_t mlen = msgbuf_size + sizeof (struct UDPMessage);
- struct UDPMessageWrapper * udpw;
+ size_t udpmlen = msgbuf_size + sizeof (struct UDPMessage);
+ struct UDP_FragmentationContext * frag_ctx;
+ struct UDP_MessageWrapper * udpw;
struct UDPMessage *udp;
- char mbuf[mlen];
+ char mbuf[udpmlen];
GNUNET_assert (plugin != NULL);
GNUNET_assert (s != NULL);
return GNUNET_SYSERR;
if ((s->addrlen == sizeof (struct sockaddr_in)) && (plugin->sockv4 == NULL))
return GNUNET_SYSERR;
- if (mlen >= GNUNET_SERVER_MAX_MESSAGE_SIZE)
+ if (udpmlen >= GNUNET_SERVER_MAX_MESSAGE_SIZE)
{
GNUNET_break (0);
return GNUNET_SYSERR;
}
LOG (GNUNET_ERROR_TYPE_DEBUG,
"UDP transmits %u-byte message to `%s' using address `%s'\n",
- mlen,
+ udpmlen,
GNUNET_i2s (&s->target),
GNUNET_a2s(s->sock_addr, s->addrlen));
-
+
+
/* Message */
udp = (struct UDPMessage *) mbuf;
- udp->header.size = htons (mlen);
+ udp->header.size = htons (udpmlen);
udp->header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_UDP_MESSAGE);
udp->reserved = htonl (0);
udp->sender = *plugin->env->my_identity;
reschedule_session_timeout(s);
- if (mlen <= UDP_MTU)
+ if (udpmlen <= UDP_MTU)
{
- udpw = GNUNET_malloc (sizeof (struct UDPMessageWrapper) + mlen);
+ /* unfragmented message */
+ udpw = GNUNET_malloc (sizeof (struct UDP_MessageWrapper) + udpmlen);
udpw->session = s;
- udpw->udp = (char *) &udpw[1];
- udpw->msg_size = mlen;
+ udpw->msg_buf = (char *) &udpw[1];
+ udpw->msg_size = udpmlen; /* message size with UDP overhead */
+ udpw->payload_size = msgbuf_size; /* message size without UDP overhead */
udpw->timeout = GNUNET_TIME_absolute_add(GNUNET_TIME_absolute_get(), to);
udpw->cont = cont;
udpw->cont_cls = cont_cls;
udpw->frag_ctx = NULL;
- memcpy (udpw->udp, udp, sizeof (struct UDPMessage));
- memcpy (&udpw->udp[sizeof (struct UDPMessage)], msgbuf, msgbuf_size);
-
+ udpw->msg_type = MSG_UNFRAGMENTED;
+ memcpy (udpw->msg_buf, udp, sizeof (struct UDPMessage));
+ memcpy (&udpw->msg_buf[sizeof (struct UDPMessage)], msgbuf, msgbuf_size);
enqueue (plugin, udpw);
+
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, unfragmented msgs, messages, attempt",
+ 1, GNUNET_NO);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, unfragmented msgs, bytes payload, attempt",
+ udpw->payload_size, GNUNET_NO);
}
else
{
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "UDP has to fragment message \n");
+ /* fragmented message */
if (s->frag_ctx != NULL)
return GNUNET_SYSERR;
memcpy (&udp[1], msgbuf, msgbuf_size);
- struct FragmentationContext * frag_ctx = GNUNET_malloc(sizeof (struct 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->bytes_to_send = mlen;
+ frag_ctx->payload_size = msgbuf_size; /* unfragmented message size without UDP overhead */
+ 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,
- s->last_expected_delay,
- &udp->header,
- &enqueue_fragment,
- frag_ctx);
-
+ UDP_MTU,
+ &plugin->tracker,
+ s->last_expected_msg_delay,
+ s->last_expected_ack_delay,
+ &udp->header,
+ &enqueue_fragment,
+ frag_ctx);
s->frag_ctx = frag_ctx;
- }
-
- if (s->addrlen == sizeof (struct sockaddr_in))
- {
- if (plugin->with_v4_ws == GNUNET_NO)
- {
- if (plugin->select_task != GNUNET_SCHEDULER_NO_TASK)
- GNUNET_SCHEDULER_cancel(plugin->select_task);
-
- plugin->select_task =
- GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
- GNUNET_TIME_UNIT_FOREVER_REL,
- plugin->rs_v4,
- plugin->ws_v4,
- &udp_plugin_select, plugin);
- plugin->with_v4_ws = GNUNET_YES;
- }
- }
- else if (s->addrlen == sizeof (struct sockaddr_in6))
- {
- if (plugin->with_v6_ws == GNUNET_NO)
- {
- if (plugin->select_task_v6 != GNUNET_SCHEDULER_NO_TASK)
- GNUNET_SCHEDULER_cancel(plugin->select_task_v6);
-
- plugin->select_task_v6 =
- GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
- GNUNET_TIME_UNIT_FOREVER_REL,
- plugin->rs_v6,
- plugin->ws_v6,
- &udp_plugin_select_v6, plugin);
- plugin->with_v6_ws = GNUNET_YES;
- }
- }
-
- return mlen;
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, fragmented msgs, messages, pending",
+ 1, GNUNET_NO);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, fragmented msgs, messages, attempt",
+ 1, GNUNET_NO);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, fragmented msgs, bytes payload, attempt",
+ frag_ctx->payload_size, GNUNET_NO);
+ }
+ schedule_select (plugin);
+ return udpmlen;
}
return;
}
/* modify our published address list */
- plugin->env->notify_address (plugin->env->cls, add_remove, arg, args);
+ plugin->env->notify_address (plugin->env->cls, add_remove, arg, args, "udp");
}
size_t msize = sizeof (struct UDP_ACK_Message) + ntohs (msg->size);
struct UDP_ACK_Message *udp_ack;
uint32_t delay = 0;
- struct UDPMessageWrapper *udpw;
+ struct UDP_MessageWrapper *udpw;
struct Session *s;
-
struct LookupContext l_ctx;
+
l_ctx.addr = rc->src_addr;
l_ctx.addrlen = rc->addr_len;
l_ctx.res = NULL;
AF_INET) ? sizeof (struct sockaddr_in) : sizeof (struct
sockaddr_in6)),
delay);
- udpw = GNUNET_malloc (sizeof (struct UDPMessageWrapper) + msize);
+ 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->udp = (char *)&udpw[1];
- udp_ack = (struct UDP_ACK_Message *) udpw->udp;
+ udpw->msg_buf = (char *)&udpw[1];
+ udpw->msg_type = MSG_ACK;
+ udp_ack = (struct UDP_ACK_Message *) udpw->msg_buf;
udp_ack->header.size = htons ((uint16_t) msize);
udp_ack->header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_UDP_ACK);
udp_ack->delay = htonl (delay);
udp_ack->sender = *rc->plugin->env->my_identity;
memcpy (&udp_ack[1], msg, ntohs (msg->size));
-
enqueue (rc->plugin, udpw);
}
char *addr,
socklen_t fromlen)
{
+ struct UDP_MessageWrapper dummy;
+ struct UDP_MessageWrapper *udpw;
+ struct UDP_MessageWrapper *tmp;
const struct GNUNET_MessageHeader *ack;
const struct UDP_ACK_Message *udp_ack;
struct LookupContext l_ctx;
l_ctx.addrlen = fromlen;
l_ctx.res = NULL;
GNUNET_CONTAINER_multihashmap_iterate (plugin->sessions,
- &lookup_session_by_addr_it,
- &l_ctx);
+ &lookup_session_by_addr_it,
+ &l_ctx);
s = l_ctx.res;
- if ((s == NULL) || (s->frag_ctx == NULL))
+ if ((NULL == s) || (NULL == s->frag_ctx))
+ {
return;
+ }
flow_delay.rel_value = (uint64_t) ntohl (udp_ack->delay);
- LOG (GNUNET_ERROR_TYPE_DEBUG, "We received a sending delay of %llu\n",
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "We received a sending delay of %llu\n",
flow_delay.rel_value);
s->flow_delay_from_other_peer =
GNUNET_TIME_relative_to_absolute (flow_delay);
return;
}
+ if (0 != memcmp (&l_ctx.res->target, &udp_ack->sender, sizeof (struct GNUNET_PeerIdentity)))
+ GNUNET_break (0);
if (GNUNET_OK != GNUNET_FRAGMENT_process_ack (s->frag_ctx->frag, ack))
{
LOG (GNUNET_ERROR_TYPE_DEBUG,
"UDP processes %u-byte acknowledgement from `%s' at `%s'\n",
(unsigned int) ntohs (msg->size), GNUNET_i2s (&udp_ack->sender),
GNUNET_a2s ((const struct sockaddr *) addr, fromlen));
+ /* Expect more ACKs to arrive */
return;
}
LOG (GNUNET_ERROR_TYPE_DEBUG,
- "FULL MESSAGE ACKed\n",
+ "Message full ACK'ed\n",
(unsigned int) ntohs (msg->size), GNUNET_i2s (&udp_ack->sender),
GNUNET_a2s ((const struct sockaddr *) addr, fromlen));
- s->last_expected_delay = GNUNET_FRAGMENT_context_destroy (s->frag_ctx->frag);
-
- struct UDPMessageWrapper * udpw;
- struct UDPMessageWrapper * tmp;
- if (s->addrlen == sizeof (struct sockaddr_in6))
- {
- udpw = plugin->ipv6_queue_head;
- while (NULL != 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);
- GNUNET_free (udpw);
- }
- udpw = tmp;
- }
- }
- if (s->addrlen == sizeof (struct sockaddr_in))
- {
- udpw = plugin->ipv4_queue_head;
- while (udpw!= NULL)
- {
- 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);
- GNUNET_free (udpw);
- }
- udpw = tmp;
- }
- }
- if (s->frag_ctx->cont != NULL)
- {
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Calling continuation for fragmented message to `%s' with result %s\n",
- GNUNET_i2s (&s->target), "OK");
- s->frag_ctx->cont (s->frag_ctx->cont_cls, &udp_ack->sender, GNUNET_OK);
- }
-
- GNUNET_free (s->frag_ctx);
- s->frag_ctx = NULL;
+ /* Remove fragmented message after successful sending */
+ fragmented_message_done (s->frag_ctx, GNUNET_OK);
}
return;
}
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, total, bytes, received",
+ size, GNUNET_NO);
+
switch (ntohs (msg->type))
{
case GNUNET_MESSAGE_TYPE_TRANSPORT_BROADCAST_BEACON:
}
}
-
-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 UDPMessageWrapper *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 UDP_MessageWrapper *udpw = NULL;
+ 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)
- {
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Fragmented message for peer `%s' with size %u timed out\n",
- GNUNET_i2s(&udpw->session->target), udpw->frag_ctx->bytes_to_send);
- udpw->session->last_expected_delay = GNUNET_FRAGMENT_context_destroy(udpw->frag_ctx->frag);
- GNUNET_free (udpw->frag_ctx);
- udpw->session->frag_ctx = NULL;
- }
- else
- {
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Message for peer `%s' with size %u timed out\n",
- GNUNET_i2s(&udpw->session->target), udpw->msg_size);
+ call_continuation (udpw, GNUNET_SYSERR);
+ switch (udpw->msg_type) {
+ case MSG_UNFRAGMENTED:
+ /* Not fragmented message */
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Message for peer `%s' with size %u timed out\n",
+ GNUNET_i2s(&udpw->session->target), udpw->payload_size);
+ /* Remove message */
+ dequeue (plugin, udpw);
+ GNUNET_free (udpw);
+ break;
+ case MSG_FRAGMENTED:
+ /* Fragmented message */
+ call_continuation (udpw, GNUNET_SYSERR);
+ 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);
+
+ /* Remove fragmented message due to timeout */
+ fragmented_message_done (udpw->frag_ctx, GNUNET_SYSERR);
+ break;
+ case MSG_ACK:
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "ACK Message for peer `%s' with size %u timed out\n",
+ GNUNET_i2s(&udpw->session->target), udpw->payload_size);
+ dequeue (plugin, udpw);
+ GNUNET_free (udpw);
+ break;
+ default:
+ break;
}
-
if (sock == plugin->sockv4)
- {
- GNUNET_CONTAINER_DLL_remove(plugin->ipv4_queue_head, plugin->ipv4_queue_tail, udpw);
- GNUNET_free (udpw);
udpw = plugin->ipv4_queue_head;
- }
- else if (sock == plugin->sockv6)
- {
- GNUNET_CONTAINER_DLL_remove(plugin->ipv6_queue_head, plugin->ipv6_queue_tail, udpw);
- GNUNET_free (udpw);
+ if (sock == plugin->sockv6)
udpw = plugin->ipv6_queue_head;
- }
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# messages dismissed due to timeout",
+ 1, GNUNET_NO);
}
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->msg_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->msg_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;
- }
- sent = GNUNET_NETWORK_socket_sendto (sock, udpw->udp, udpw->msg_size, sa, slen);
+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->msg_size), GNUNET_a2s (sa, slen),
- STRERROR (errno));
- }
+ /* Failure */
+ analyze_send_error (plugin, sa, slen, errno);
call_continuation(udpw, GNUNET_SYSERR);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, total, bytes, sent, failure",
+ sent, GNUNET_NO);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, total, messages, sent, failure",
+ 1, GNUNET_NO);
}
else
{
+ /* Success */
LOG (GNUNET_ERROR_TYPE_DEBUG,
- "UDP transmitted %u-byte message to `%s' (%d: %s)\n",
- (unsigned int) (udpw->msg_size), GNUNET_a2s (sa, slen), (int) sent,
+ "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,
(sent < 0) ? STRERROR (errno) : "ok");
- call_continuation(udpw, GNUNET_OK);
- network_down_error = 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);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, total, bytes, sent, success",
+ sent, GNUNET_NO);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, total, messages, sent, success",
+ 1, GNUNET_NO);
+ if (NULL != udpw->frag_ctx)
+ udpw->frag_ctx->on_wire_size += udpw->msg_size;
+ call_continuation (udpw, GNUNET_OK);
+ }
+ dequeue (plugin, udpw);
GNUNET_free (udpw);
udpw = NULL;
struct Plugin *plugin = cls;
plugin->select_task = GNUNET_SCHEDULER_NO_TASK;
- if ((tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN) != 0)
+ if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
return;
- plugin->with_v4_ws = GNUNET_NO;
-
- if ((tc->reason & GNUNET_SCHEDULER_REASON_READ_READY) != 0)
- {
- if ((NULL != plugin->sockv4) &&
- (GNUNET_NETWORK_fdset_isset (tc->read_ready, plugin->sockv4)))
- udp_select_read (plugin, plugin->sockv4);
-
- }
-
- if ((tc->reason & GNUNET_SCHEDULER_REASON_WRITE_READY) != 0)
- {
- if ((NULL != plugin->sockv4) && (plugin->ipv4_queue_head != NULL) &&
- (GNUNET_NETWORK_fdset_isset (tc->write_ready, plugin->sockv4)))
- {
- udp_select_send (plugin, plugin->sockv4);
- }
- }
-
- if (plugin->select_task != GNUNET_SCHEDULER_NO_TASK)
- GNUNET_SCHEDULER_cancel (plugin->select_task);
- plugin->select_task = GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
- GNUNET_TIME_UNIT_FOREVER_REL,
- plugin->rs_v4,
- (plugin->ipv4_queue_head != NULL) ? plugin->ws_v4 : NULL,
- &udp_plugin_select, plugin);
- if (plugin->ipv4_queue_head != NULL)
- plugin->with_v4_ws = GNUNET_YES;
- else
- plugin->with_v4_ws = GNUNET_NO;
+ if ( (0 != (tc->reason & GNUNET_SCHEDULER_REASON_READ_READY)) &&
+ (NULL != plugin->sockv4) &&
+ (GNUNET_NETWORK_fdset_isset (tc->read_ready, plugin->sockv4)) )
+ udp_select_read (plugin, plugin->sockv4);
+ if ( (0 != (tc->reason & GNUNET_SCHEDULER_REASON_WRITE_READY)) &&
+ (NULL != plugin->sockv4) &&
+ (NULL != plugin->ipv4_queue_head) &&
+ (GNUNET_NETWORK_fdset_isset (tc->write_ready, plugin->sockv4)) )
+ udp_select_send (plugin, plugin->sockv4);
+ schedule_select (plugin);
}
struct Plugin *plugin = cls;
plugin->select_task_v6 = GNUNET_SCHEDULER_NO_TASK;
- if ((tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN) != 0)
+ if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
return;
-
- plugin->with_v6_ws = GNUNET_NO;
- if ((tc->reason & GNUNET_SCHEDULER_REASON_READ_READY) != 0)
- {
- if ((NULL != plugin->sockv6) &&
- (GNUNET_NETWORK_fdset_isset (tc->read_ready, plugin->sockv6)))
- udp_select_read (plugin, plugin->sockv6);
- }
-
- if ((tc->reason & GNUNET_SCHEDULER_REASON_WRITE_READY) != 0)
- {
- if ((NULL != plugin->sockv6) && (plugin->ipv6_queue_head != NULL) &&
- (GNUNET_NETWORK_fdset_isset (tc->write_ready, plugin->sockv6)))
- {
- udp_select_send (plugin, plugin->sockv6);
- }
- }
- if (plugin->select_task_v6 != GNUNET_SCHEDULER_NO_TASK)
- GNUNET_SCHEDULER_cancel (plugin->select_task_v6);
- plugin->select_task_v6 = GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
- GNUNET_TIME_UNIT_FOREVER_REL,
- plugin->rs_v6,
- (plugin->ipv6_queue_head != NULL) ? plugin->ws_v6 : NULL,
- &udp_plugin_select_v6, plugin);
- if (plugin->ipv6_queue_head != NULL)
- plugin->with_v6_ws = GNUNET_YES;
- else
- plugin->with_v6_ws = GNUNET_NO;
+ if ( ((tc->reason & GNUNET_SCHEDULER_REASON_READ_READY) != 0) &&
+ (NULL != plugin->sockv6) &&
+ (GNUNET_NETWORK_fdset_isset (tc->read_ready, plugin->sockv6)) )
+ udp_select_read (plugin, plugin->sockv6);
+ if ( (0 != (tc->reason & GNUNET_SCHEDULER_REASON_WRITE_READY)) &&
+ (NULL != plugin->sockv6) && (plugin->ipv6_queue_head != NULL) &&
+ (GNUNET_NETWORK_fdset_isset (tc->write_ready, plugin->sockv6)) )
+ udp_select_send (plugin, plugin->sockv6);
+ schedule_select (plugin);
}
GNUNET_NETWORK_fdset_set (plugin->ws_v4, plugin->sockv4);
}
- if (sockets_created == 0)
+ if (0 == sockets_created)
LOG (GNUNET_ERROR_TYPE_WARNING, _("Failed to open UDP sockets\n"));
-
- plugin->select_task =
- GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
- GNUNET_TIME_UNIT_FOREVER_REL,
- plugin->rs_v4,
- NULL,
- &udp_plugin_select, plugin);
- plugin->with_v4_ws = GNUNET_NO;
-
if (plugin->enable_ipv6 == GNUNET_YES)
{
plugin->rs_v6 = GNUNET_NETWORK_fdset_create ();
GNUNET_NETWORK_fdset_set (plugin->rs_v6, plugin->sockv6);
GNUNET_NETWORK_fdset_set (plugin->ws_v6, plugin->sockv6);
}
-
- plugin->select_task_v6 =
- GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
- GNUNET_TIME_UNIT_FOREVER_REL,
- plugin->rs_v6,
- NULL,
- &udp_plugin_select_v6, plugin);
- plugin->with_v6_ws = GNUNET_NO;
}
-
+ schedule_select (plugin);
plugin->nat = GNUNET_NAT_register (plugin->env->cfg,
GNUNET_NO, plugin->port,
sockets_created,
return sockets_created;
}
-/**
- * Session was idle, so disconnect it
- */
-static void
-session_timeout (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
- GNUNET_assert (NULL != cls);
- struct Session *s = cls;
-
- s->timeout_task = GNUNET_SCHEDULER_NO_TASK;
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Session %p was idle for %llu ms, disconnecting\n",
- s, (unsigned long long) GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value);
- /* call session destroy function */
- disconnect_session(s);
-}
-
-
-/**
- * Start session timeout
- */
-static void
-start_session_timeout (struct Session *s)
-{
- GNUNET_assert (NULL != s);
- GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == s->timeout_task);
- s->timeout_task = GNUNET_SCHEDULER_add_delayed (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT,
- &session_timeout,
- s);
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Timeout for session %p set to %llu ms\n",
- s, (unsigned long long) GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value);
-}
-
-
-/**
- * Increment session timeout due to activity
- */
-static void
-reschedule_session_timeout (struct Session *s)
-{
- GNUNET_assert (NULL != s);
- GNUNET_assert (GNUNET_SCHEDULER_NO_TASK != s->timeout_task);
-
- GNUNET_SCHEDULER_cancel (s->timeout_task);
- s->timeout_task = GNUNET_SCHEDULER_add_delayed (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT,
- &session_timeout,
- s);
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Timeout rescheduled for session %p set to %llu ms\n",
- s, (unsigned long long) GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value);
-}
-
-
-/**
- * Cancel timeout
- */
-static void
-stop_session_timeout (struct Session *s)
-{
- GNUNET_assert (NULL != s);
-
- if (GNUNET_SCHEDULER_NO_TASK != s->timeout_task)
- {
- GNUNET_SCHEDULER_cancel (s->timeout_task);
- s->timeout_task = GNUNET_SCHEDULER_NO_TASK;
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Timeout stopped for session %p canceled\n",
- s, (unsigned long long) GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value);
- }
-}
-
-
/**
* The exported method. Makes the core api available via a global and
GNUNET_BANDWIDTH_tracker_init (&p->tracker,
GNUNET_BANDWIDTH_value_init ((uint32_t)udp_max_bps), 30);
- p->sessions = GNUNET_CONTAINER_multihashmap_create (10);
+ p->sessions = GNUNET_CONTAINER_multihashmap_create (10, GNUNET_NO);
p->defrag_ctxs = GNUNET_CONTAINER_heap_create (GNUNET_CONTAINER_HEAP_ORDER_MIN);
p->mst = GNUNET_SERVER_mst_create (&process_inbound_tokenized_messages, p);
p->port = port;
}
stop_broadcast (plugin);
-
if (plugin->select_task != GNUNET_SCHEDULER_NO_TASK)
{
GNUNET_SCHEDULER_cancel (plugin->select_task);
}
/* Clean up leftover messages */
- struct UDPMessageWrapper * udpw;
+ struct UDP_MessageWrapper * udpw;
udpw = plugin->ipv4_queue_head;
while (udpw != NULL)
{
- struct UDPMessageWrapper *tmp = udpw->next;
- GNUNET_CONTAINER_DLL_remove(plugin->ipv4_queue_head, plugin->ipv4_queue_tail, udpw);
+ struct UDP_MessageWrapper *tmp = udpw->next;
+ dequeue (plugin, udpw);
call_continuation(udpw, GNUNET_SYSERR);
GNUNET_free (udpw);
+
udpw = tmp;
}
udpw = plugin->ipv6_queue_head;
while (udpw != NULL)
{
- struct UDPMessageWrapper *tmp = udpw->next;
- GNUNET_CONTAINER_DLL_remove(plugin->ipv6_queue_head, plugin->ipv6_queue_tail, udpw);
+ struct UDP_MessageWrapper *tmp = udpw->next;
+ dequeue (plugin, udpw);
call_continuation(udpw, GNUNET_SYSERR);
GNUNET_free (udpw);
+
udpw = tmp;
}
projects / oweals / gnunet.git / blobdiff