/*
This file is part of GNUnet
- (C) 2010-2014 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2010-2017 GNUnet e.V.
- GNUnet is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published
- by the Free Software Foundation; either version 3, or (at your
- option) any later version.
+ GNUnet is free software: you can redistribute it and/or modify it
+ under the terms of the GNU Affero General Public License as published
+ by the Free Software Foundation, either version 3 of the License,
+ or (at your option) any later version.
GNUnet 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
- General Public License for more details.
+ Affero General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with GNUnet; see the file COPYING. If not, write to the
- Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
+ You should have received a copy of the GNU Affero General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+ SPDX-License-Identifier: AGPL3.0-or-later
*/
/**
#include "gnunet_hello_lib.h"
#include "gnunet_util_lib.h"
#include "gnunet_fragmentation_lib.h"
-#include "gnunet_nat_lib.h"
+#include "gnunet_nat_service.h"
#include "gnunet_protocols.h"
#include "gnunet_resolver_service.h"
#include "gnunet_signatures.h"
#define LOG(kind,...) GNUNET_log_from (kind, "transport-udp", __VA_ARGS__)
+/**
+ * After how much inactivity should a UDP session time out?
+ */
#define UDP_SESSION_TIME_OUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 60)
/**
/**
* We keep a defragmentation queue per sender address. How many
* sender addresses do we support at the same time? Memory consumption
- * is roughly a factor of 32k * UDP_MAX_MESSAGES_IN_DEFRAG times this
+ * is roughly a factor of 32k * #UDP_MAX_MESSAGES_IN_DEFRAG times this
* value. (So 128 corresponds to 12 MB and should suffice for
* connecting to roughly 128 peers via UDP).
*/
#define UDP_MAX_SENDER_ADDRESSES_WITH_DEFRAG 128
+/**
+ * UDP Message-Packet header (after defragmentation).
+ */
+struct UDPMessage
+{
+ /**
+ * Message header.
+ */
+ struct GNUNET_MessageHeader header;
+
+ /**
+ * Always zero for now.
+ */
+ uint32_t reserved;
+
+ /**
+ * What is the identity of the sender
+ */
+ struct GNUNET_PeerIdentity sender;
+
+};
+
+
/**
* Closure for #append_port().
*/
/**
* Timeout task
*/
- struct GNUNET_SCHEDULER_Task * timeout_task;
+ struct GNUNET_SCHEDULER_Task *timeout_task;
/**
- * IPv6 address
+ * Is this an IPv6 address?
*/
int ipv6;
/**
* Session with another peer.
*/
-struct Session
+struct GNUNET_ATS_Session
{
/**
* Which peer is this session for?
*/
struct GNUNET_PeerIdentity target;
+ /**
+ * Tokenizer for inbound messages.
+ */
+ struct GNUNET_MessageStreamTokenizer *mst;
+
/**
* Plugin this session belongs to.
*/
struct GNUNET_TIME_Relative flow_delay_for_other_peer;
/**
- * Desired delay for next sending we received from other peer
+ * Desired delay for transmissions we received from other peer.
+ * This is for full messages, the value needs to be adjusted for
+ * fragmented messages.
*/
- struct GNUNET_TIME_Absolute flow_delay_from_other_peer;
+ struct GNUNET_TIME_Relative flow_delay_from_other_peer;
/**
* Session timeout task
*/
- struct GNUNET_SCHEDULER_Task * timeout_task;
+ struct GNUNET_SCHEDULER_Task *timeout_task;
/**
* When does this session time out?
*/
struct GNUNET_TIME_Absolute timeout;
+ /**
+ * What time did we last transmit?
+ */
+ struct GNUNET_TIME_Absolute last_transmit_time;
+
/**
* expected delay for ACKs
*/
*/
struct GNUNET_TIME_Relative last_expected_msg_delay;
- /**
- * Address metrics (as set by the "update_address_metrics" by
- * the environment).
- */
- struct GNUNET_ATS_Information ats;
-
/**
* Our own address.
*/
*/
unsigned int rc;
+ /**
+ * Network type of the address.
+ */
+ enum GNUNET_NetworkType scope;
+
/**
* Is this session about to be destroyed (sometimes we cannot
* destroy a session immediately as below us on the stack
};
-/**
- * Closure for #process_inbound_tokenized_messages().
- */
-struct SourceInformation
-{
- /**
- * Sender identity.
- */
- struct GNUNET_PeerIdentity sender;
-
- /**
- * Source address.
- */
- const void *arg;
-
- /**
- * Associated session.
- */
- struct Session *session;
-
- /**
- * Number of bytes in source address.
- */
- size_t args;
-
-};
/**
- * Closure for #find_receive_context().
+ * Data structure to track defragmentation contexts based
+ * on the source of the UDP traffic.
*/
-struct FindReceiveContext
+struct DefragContext
{
- /**
- * Where to store the result.
- */
- struct DefragContext *rc;
/**
- * Address to find.
+ * Defragmentation context.
*/
- const struct sockaddr *addr;
+ struct GNUNET_DEFRAGMENT_Context *defrag;
/**
- *
+ * Reference to master plugin struct.
*/
- struct Session *session;
+ struct Plugin *plugin;
/**
- * Number of bytes in @e addr.
+ * Node in the defrag heap.
*/
- socklen_t addr_len;
-
-};
-
-/**
- * Data structure to track defragmentation contexts based
- * on the source of the UDP traffic.
- */
-struct DefragContext
-{
+ struct GNUNET_CONTAINER_HeapNode *hnode;
/**
- * Defragmentation context.
+ * Source address this receive context is for (allocated at the
+ * end of the struct).
*/
- struct GNUNET_DEFRAGMENT_Context *defrag;
+ const union UdpAddress *udp_addr;
/**
- * Source address this receive context is for (allocated at the
- * end of the struct).
+ * Who's message(s) are we defragmenting here?
+ * Only initialized once we succeeded and
+ * @e have_sender is set.
*/
- const struct sockaddr *src_addr;
+ struct GNUNET_PeerIdentity sender;
/**
- * Reference to master plugin struct.
+ * Length of @e udp_addr.
*/
- struct Plugin *plugin;
+ size_t udp_addr_len;
/**
- * Node in the defrag heap.
+ * Network type the address belongs to.
*/
- struct GNUNET_CONTAINER_HeapNode *hnode;
+ enum GNUNET_NetworkType network_type;
/**
- * Length of @e src_addr.
+ * Has the @e sender field been initialized yet?
*/
- size_t addr_len;
+ int have_sender;
};
struct Plugin *plugin;
/**
- * Handle for GNUNET_FRAGMENT context
+ * Handle for fragmentation.
*/
struct GNUNET_FRAGMENT_Context *frag;
/**
* The session this fragmentation context belongs to
*/
- struct Session *session;
+ struct GNUNET_ATS_Session *session;
/**
* Function to call upon completion of the transmission.
void *cont_cls;
/**
- * Message timeout
- */
- struct GNUNET_TIME_Absolute timeout;
-
- /**
- * Payload size of original unfragmented message
+ * Start time.
*/
- size_t payload_size;
+ struct GNUNET_TIME_Absolute start_time;
/**
- * Bytes used to send all fragments on wire including UDP overhead
+ * Transmission time for the next fragment. Incremented by
+ * the @e flow_delay_from_other_peer for each fragment when
+ * we setup the fragments.
*/
- size_t on_wire_size;
+ struct GNUNET_TIME_Absolute next_frag_time;
/**
- * FIXME.
+ * Desired delay for transmissions we received from other peer.
+ * Adjusted to be per fragment (UDP_MTU), even though on the
+ * wire it was for "full messages".
*/
- unsigned int fragments_used;
-
-};
+ struct GNUNET_TIME_Relative flow_delay_from_other_peer;
-
-/**
- * Message types included in a `struct UDP_MessageWrapper`
- */
-enum UDP_MessageType
-{
/**
- * Uninitialized (error)
+ * Message timeout
*/
- UMT_UNDEFINED = 0,
+ struct GNUNET_TIME_Absolute timeout;
/**
- * Fragment of a message.
+ * Payload size of original unfragmented message
*/
- UMT_MSG_FRAGMENTED = 1,
+ size_t payload_size;
/**
- *
+ * Bytes used to send all fragments on wire including UDP overhead
*/
- UMT_MSG_FRAGMENTED_COMPLETE = 2,
+ size_t on_wire_size;
- /**
- * Unfragmented message.
- */
- UMT_MSG_UNFRAGMENTED = 3,
+};
- /**
- * Receipt confirmation.
- */
- UMT_MSG_ACK = 4
-};
+/**
+ * Function called when a message is removed from the
+ * transmission queue.
+ *
+ * @param cls closure
+ * @param udpw message wrapper finished
+ * @param result #GNUNET_OK on success (message was sent)
+ * #GNUNET_SYSERR if the target disconnected
+ * or we had a timeout or other trouble sending
+ */
+typedef void
+(*QueueContinuation) (void *cls,
+ struct UDP_MessageWrapper *udpw,
+ int result);
/**
/**
* Session this message belongs to
*/
- struct Session *session;
+ struct GNUNET_ATS_Session *session;
/**
- * DLL of messages
- * previous element
+ * DLL of messages, previous element
*/
struct UDP_MessageWrapper *prev;
/**
- * DLL of messages
- * previous element
+ * DLL of messages, next element
*/
struct UDP_MessageWrapper *next;
/**
- * Message with size msg_size including UDP specific overhead
+ * Message with @e msg_size bytes including UDP-specific overhead.
*/
char *msg_buf;
/**
- * Function to call upon completion of the transmission.
+ * Function to call once the message wrapper is being removed
+ * from the queue (with success or failure).
+ */
+ QueueContinuation qc;
+
+ /**
+ * Closure for @e qc.
+ */
+ void *qc_cls;
+
+ /**
+ * External continuation to call upon completion of the
+ * transmission, NULL if this queue entry is not for a
+ * message from the application.
*/
GNUNET_TRANSPORT_TransmitContinuation cont;
void *cont_cls;
/**
- * Fragmentation context
+ * Fragmentation context.
* frag_ctx == NULL if transport <= MTU
* frag_ctx != NULL if transport > MTU
*/
struct UDP_FragmentationContext *frag_ctx;
/**
- * Message timeout
+ * Message enqueue time.
*/
- struct GNUNET_TIME_Absolute timeout;
+ struct GNUNET_TIME_Absolute start_time;
/**
- * Size of UDP message to send including UDP specific overhead
+ * Desired transmission time for this message, based on the
+ * flow limiting information we got from the other peer.
*/
- size_t msg_size;
+ struct GNUNET_TIME_Absolute transmission_time;
/**
- * Payload size of original message
+ * Message timeout.
*/
- size_t payload_size;
+ struct GNUNET_TIME_Absolute timeout;
+
+ /**
+ * Size of UDP message to send, including UDP-specific overhead.
+ */
+ size_t msg_size;
/**
- * Message type
+ * Payload size of original message.
*/
- enum UDP_MessageType msg_type;
+ size_t payload_size;
};
+GNUNET_NETWORK_STRUCT_BEGIN
+
/**
- * UDP ACK Message-Packet header (after defragmentation).
+ * UDP ACK Message-Packet header.
*/
struct UDP_ACK_Message
{
struct GNUNET_MessageHeader header;
/**
- * Desired delay for flow control
+ * Desired delay for flow control, in us (in NBO).
+ * A value of UINT32_MAX indicates that the other
+ * peer wants us to disconnect.
*/
- uint32_t delay;
+ uint32_t delay GNUNET_PACKED;
/**
* What is the identity of the sender
};
+GNUNET_NETWORK_STRUCT_END
+
+
+/* ************************* Monitoring *********** */
+
/**
* If a session monitor is attached, notify it about the new
*/
static void
notify_session_monitor (struct Plugin *plugin,
- struct Session *session,
+ struct GNUNET_ATS_Session *session,
enum GNUNET_TRANSPORT_SessionState state)
{
struct GNUNET_TRANSPORT_SessionInfo info;
if (NULL == plugin->sic)
return;
- memset (&info, 0, sizeof (info));
+ if (GNUNET_YES == session->in_destroy)
+ return; /* already destroyed, just RC>0 left-over actions */
+ memset (&info,
+ 0,
+ sizeof (info));
info.state = state;
info.is_inbound = GNUNET_SYSERR; /* hard to say */
info.num_msg_pending = session->msgs_in_queue;
/**
- * We have been notified that our readset has something to read. We don't
- * know which socket needs to be read, so we have to check each one
- * Then reschedule this function to be called again once more is available.
+ * Return information about the given session to the monitor callback.
*
- * @param cls the plugin handle
- * @param tc the scheduling context (for rescheduling this function again)
+ * @param cls the `struct Plugin` with the monitor callback (`sic`)
+ * @param peer peer we send information about
+ * @param value our `struct GNUNET_ATS_Session` to send information about
+ * @return #GNUNET_OK (continue to iterate)
*/
-static void
-udp_plugin_select (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc);
-
+static int
+send_session_info_iter (void *cls,
+ const struct GNUNET_PeerIdentity *peer,
+ void *value)
+{
+ struct Plugin *plugin = cls;
+ struct GNUNET_ATS_Session *session = value;
-/**
- * We have been notified that our readset has something to read. We don't
- * know which socket needs to be read, so we have to check each one
- * Then reschedule this function to be called again once more is available.
- *
- * @param cls the plugin handle
- * @param tc the scheduling context (for rescheduling this function again)
- */
-static void
-udp_plugin_select_v6 (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc);
+ notify_session_monitor (plugin,
+ session,
+ GNUNET_TRANSPORT_SS_INIT);
+ notify_session_monitor (plugin,
+ session,
+ GNUNET_TRANSPORT_SS_UP);
+ return GNUNET_OK;
+}
/**
- * (re)schedule select tasks for this plugin.
+ * Begin monitoring sessions of a plugin. There can only
+ * be one active monitor per plugin (i.e. if there are
+ * multiple monitors, the transport service needs to
+ * multiplex the generated events over all of them).
*
- * @param plugin plugin to reschedule
+ * @param cls closure of the plugin
+ * @param sic callback to invoke, NULL to disable monitor;
+ * plugin will being by iterating over all active
+ * sessions immediately and then enter monitor mode
+ * @param sic_cls closure for @a sic
*/
static void
-schedule_select (struct Plugin *plugin)
+udp_plugin_setup_monitor (void *cls,
+ GNUNET_TRANSPORT_SessionInfoCallback sic,
+ void *sic_cls)
{
- struct GNUNET_TIME_Relative min_delay;
- struct UDP_MessageWrapper *udpw;
-
- if ((GNUNET_YES == plugin->enable_ipv4) && (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 != NULL )
- GNUNET_SCHEDULER_cancel (plugin->select_task);
+ struct Plugin *plugin = cls;
- /* 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_us) ?
- GNUNET_TIME_UNIT_FOREVER_REL : min_delay, plugin->rs_v4,
- (0 == min_delay.rel_value_us) ? plugin->ws_v4 : NULL,
- &udp_plugin_select, plugin);
- }
- if ((GNUNET_YES == plugin->enable_ipv6) && (NULL != plugin->sockv6))
+ plugin->sic = sic;
+ plugin->sic_cls = sic_cls;
+ if (NULL != sic)
{
- 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 (NULL != 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_us) ?
- GNUNET_TIME_UNIT_FOREVER_REL : min_delay, plugin->rs_v6,
- (0 == min_delay.rel_value_us) ? plugin->ws_v6 : NULL,
- &udp_plugin_select_v6, plugin);
+ GNUNET_CONTAINER_multipeermap_iterate (plugin->sessions,
+ &send_session_info_iter,
+ plugin);
+ /* signal end of first iteration */
+ sic (sic_cls,
+ NULL,
+ NULL);
}
}
+/* ****************** Little Helpers ****************** */
+
+
/**
- * Function called for a quick conversion of the binary address to
- * a numeric address. Note that the caller must not free the
- * address and that the next call to this function is allowed
- * to override the address again.
+ * Function to free last resources associated with a session.
*
- * @param cls closure
- * @param addr binary address
- * @param addrlen length of the address
- * @return string representing the same address
+ * @param s session to free
*/
-const char *
-udp_address_to_string (void *cls,
- const void *addr,
- size_t addrlen)
+static void
+free_session (struct GNUNET_ATS_Session *s)
{
- static char rbuf[INET6_ADDRSTRLEN + 10];
- char buf[INET6_ADDRSTRLEN];
- const void *sb;
- struct in_addr a4;
- struct in6_addr a6;
- const struct IPv4UdpAddress *t4;
- const struct IPv6UdpAddress *t6;
- int af;
- uint16_t port;
- uint32_t options;
-
- if ((NULL != addr) && (addrlen == sizeof(struct IPv6UdpAddress)))
+ if (NULL != s->address)
{
- t6 = addr;
- af = AF_INET6;
- options = ntohl (t6->options);
- port = ntohs (t6->u6_port);
- memcpy (&a6, &t6->ipv6_addr, sizeof(a6));
- sb = &a6;
+ GNUNET_HELLO_address_free (s->address);
+ s->address = NULL;
}
- else if ((NULL != addr) && (addrlen == sizeof(struct IPv4UdpAddress)))
+ if (NULL != s->frag_ctx)
{
- t4 = addr;
- af = AF_INET;
- options = ntohl (t4->options);
- port = ntohs (t4->u4_port);
- memcpy (&a4, &t4->ipv4_addr, sizeof(a4));
- sb = &a4;
+ GNUNET_FRAGMENT_context_destroy (s->frag_ctx->frag,
+ NULL,
+ NULL);
+ GNUNET_free (s->frag_ctx);
+ s->frag_ctx = NULL;
}
- else
+ if (NULL != s->mst)
{
- return NULL;
+ GNUNET_MST_destroy (s->mst);
+ s->mst = NULL;
}
- inet_ntop (af, sb, buf, INET6_ADDRSTRLEN);
-
- GNUNET_snprintf (rbuf, sizeof(rbuf),
- (af == AF_INET6) ? "%s.%u.[%s]:%u" : "%s.%u.%s:%u", PLUGIN_NAME, options,
- buf, port);
- return rbuf;
+ GNUNET_free (s);
}
/**
- * Function called to convert a string address to
- * a binary address.
- *
- * @param cls closure ('struct Plugin*')
+ * Function that is called to get the keepalive factor.
+ * #GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT is divided by this number to
+ * calculate the interval between keepalive packets.
+ *
+ * @param cls closure with the `struct Plugin`
+ * @return keepalive factor
+ */
+static unsigned int
+udp_query_keepalive_factor (void *cls)
+{
+ return 15;
+}
+
+
+/**
+ * Function obtain the network type for a session
+ *
+ * @param cls closure (`struct Plugin *`)
+ * @param session the session
+ * @return the network type
+ */
+static enum GNUNET_NetworkType
+udp_plugin_get_network (void *cls,
+ struct GNUNET_ATS_Session *session)
+{
+ return session->scope;
+}
+
+
+/**
+ * Function obtain the network type for an address.
+ *
+ * @param cls closure (`struct Plugin *`)
+ * @param address the address
+ * @return the network type
+ */
+static enum GNUNET_NetworkType
+udp_plugin_get_network_for_address (void *cls,
+ const struct GNUNET_HELLO_Address *address)
+{
+ struct Plugin *plugin = cls;
+ size_t addrlen;
+ struct sockaddr_in a4;
+ struct sockaddr_in6 a6;
+ const struct IPv4UdpAddress *u4;
+ const struct IPv6UdpAddress *u6;
+ const void *sb;
+ size_t sbs;
+
+ addrlen = address->address_length;
+ if (addrlen == sizeof(struct IPv6UdpAddress))
+ {
+ GNUNET_assert (NULL != address->address); /* make static analysis happy */
+ u6 = address->address;
+ memset (&a6, 0, sizeof(a6));
+#if HAVE_SOCKADDR_IN_SIN_LEN
+ a6.sin6_len = sizeof (a6);
+#endif
+ a6.sin6_family = AF_INET6;
+ a6.sin6_port = u6->u6_port;
+ GNUNET_memcpy (&a6.sin6_addr, &u6->ipv6_addr, sizeof(struct in6_addr));
+ sb = &a6;
+ sbs = sizeof(a6);
+ }
+ else if (addrlen == sizeof(struct IPv4UdpAddress))
+ {
+ GNUNET_assert (NULL != address->address); /* make static analysis happy */
+ u4 = address->address;
+ memset (&a4, 0, sizeof(a4));
+#if HAVE_SOCKADDR_IN_SIN_LEN
+ a4.sin_len = sizeof (a4);
+#endif
+ a4.sin_family = AF_INET;
+ a4.sin_port = u4->u4_port;
+ a4.sin_addr.s_addr = u4->ipv4_addr;
+ sb = &a4;
+ sbs = sizeof(a4);
+ }
+ else
+ {
+ GNUNET_break (0);
+ return GNUNET_NT_UNSPECIFIED;
+ }
+ return plugin->env->get_address_type (plugin->env->cls,
+ sb,
+ sbs);
+}
+
+
+/* ******************* Event loop ******************** */
+
+/**
+ * We have been notified that our readset has something to read. We don't
+ * know which socket needs to be read, so we have to check each one
+ * Then reschedule this function to be called again once more is available.
+ *
+ * @param cls the plugin handle
+ */
+static void
+udp_plugin_select_v4 (void *cls);
+
+
+/**
+ * We have been notified that our readset has something to read. We don't
+ * know which socket needs to be read, so we have to check each one
+ * Then reschedule this function to be called again once more is available.
+ *
+ * @param cls the plugin handle
+ */
+static void
+udp_plugin_select_v6 (void *cls);
+
+
+/**
+ * (re)schedule IPv4-select tasks for this plugin.
+ *
+ * @param plugin plugin to reschedule
+ */
+static void
+schedule_select_v4 (struct Plugin *plugin)
+{
+ struct GNUNET_TIME_Relative min_delay;
+ struct GNUNET_TIME_Relative delay;
+ struct UDP_MessageWrapper *udpw;
+ struct UDP_MessageWrapper *min_udpw;
+
+ if ( (GNUNET_YES == plugin->enable_ipv4) &&
+ (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;
+ min_udpw = NULL;
+ for (udpw = plugin->ipv4_queue_head; NULL != udpw; udpw = udpw->next)
+ {
+ delay = GNUNET_TIME_absolute_get_remaining (udpw->transmission_time);
+ if (delay.rel_value_us < min_delay.rel_value_us)
+ {
+ min_delay = delay;
+ min_udpw = udpw;
+ }
+ }
+ if (NULL != plugin->select_task_v4)
+ GNUNET_SCHEDULER_cancel (plugin->select_task_v4);
+ if (NULL != min_udpw)
+ {
+ if (min_delay.rel_value_us > GNUNET_CONSTANTS_LATENCY_WARN.rel_value_us)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ "Calculated flow delay for UDPv4 at %s for %s\n",
+ GNUNET_STRINGS_relative_time_to_string (min_delay,
+ GNUNET_YES),
+ GNUNET_i2s (&min_udpw->session->target));
+ }
+ else
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Calculated flow delay for UDPv4 at %s for %s\n",
+ GNUNET_STRINGS_relative_time_to_string (min_delay,
+ GNUNET_YES),
+ GNUNET_i2s (&min_udpw->session->target));
+ }
+ }
+ plugin->select_task_v4
+ = GNUNET_SCHEDULER_add_read_net (min_delay,
+ plugin->sockv4,
+ &udp_plugin_select_v4,
+ plugin);
+ }
+}
+
+
+/**
+ * (re)schedule IPv6-select tasks for this plugin.
+ *
+ * @param plugin plugin to reschedule
+ */
+static void
+schedule_select_v6 (struct Plugin *plugin)
+{
+ struct GNUNET_TIME_Relative min_delay;
+ struct GNUNET_TIME_Relative delay;
+ struct UDP_MessageWrapper *udpw;
+ struct UDP_MessageWrapper *min_udpw;
+
+ if ( (GNUNET_YES == plugin->enable_ipv6) &&
+ (NULL != plugin->sockv6) )
+ {
+ min_delay = GNUNET_TIME_UNIT_FOREVER_REL;
+ min_udpw = NULL;
+ for (udpw = plugin->ipv6_queue_head; NULL != udpw; udpw = udpw->next)
+ {
+ delay = GNUNET_TIME_absolute_get_remaining (udpw->transmission_time);
+ if (delay.rel_value_us < min_delay.rel_value_us)
+ {
+ min_delay = delay;
+ min_udpw = udpw;
+ }
+ }
+ if (NULL != plugin->select_task_v6)
+ GNUNET_SCHEDULER_cancel (plugin->select_task_v6);
+ if (NULL != min_udpw)
+ {
+ if (min_delay.rel_value_us > GNUNET_CONSTANTS_LATENCY_WARN.rel_value_us)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ "Calculated flow delay for UDPv6 at %s for %s\n",
+ GNUNET_STRINGS_relative_time_to_string (min_delay,
+ GNUNET_YES),
+ GNUNET_i2s (&min_udpw->session->target));
+ }
+ else
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Calculated flow delay for UDPv6 at %s for %s\n",
+ GNUNET_STRINGS_relative_time_to_string (min_delay,
+ GNUNET_YES),
+ GNUNET_i2s (&min_udpw->session->target));
+ }
+ }
+ plugin->select_task_v6
+ = GNUNET_SCHEDULER_add_read_net (min_delay,
+ plugin->sockv6,
+ &udp_plugin_select_v6,
+ plugin);
+ }
+}
+
+
+/* ******************* Address to string and back ***************** */
+
+
+/**
+ * Function called for a quick conversion of the binary address to
+ * a numeric address. Note that the caller must not free the
+ * address and that the next call to this function is allowed
+ * to override the address again.
+ *
+ * @param cls closure
+ * @param addr binary address (a `union UdpAddress`)
+ * @param addrlen length of the @a addr
+ * @return string representing the same address
+ */
+const char *
+udp_address_to_string (void *cls,
+ const void *addr,
+ size_t addrlen)
+{
+ static char rbuf[INET6_ADDRSTRLEN + 10];
+ char buf[INET6_ADDRSTRLEN];
+ const void *sb;
+ struct in_addr a4;
+ struct in6_addr a6;
+ const struct IPv4UdpAddress *t4;
+ const struct IPv6UdpAddress *t6;
+ int af;
+ uint16_t port;
+ uint32_t options;
+
+ if (NULL == addr)
+ {
+ GNUNET_break_op (0);
+ return NULL;
+ }
+
+ if (addrlen == sizeof(struct IPv6UdpAddress))
+ {
+ t6 = addr;
+ af = AF_INET6;
+ options = ntohl (t6->options);
+ port = ntohs (t6->u6_port);
+ a6 = t6->ipv6_addr;
+ sb = &a6;
+ }
+ else if (addrlen == sizeof(struct IPv4UdpAddress))
+ {
+ t4 = addr;
+ af = AF_INET;
+ options = ntohl (t4->options);
+ port = ntohs (t4->u4_port);
+ a4.s_addr = t4->ipv4_addr;
+ sb = &a4;
+ }
+ else
+ {
+ GNUNET_break_op (0);
+ return NULL;
+ }
+ inet_ntop (af,
+ sb,
+ buf,
+ INET6_ADDRSTRLEN);
+ GNUNET_snprintf (rbuf,
+ sizeof(rbuf),
+ (af == AF_INET6)
+ ? "%s.%u.[%s]:%u"
+ : "%s.%u.%s:%u",
+ PLUGIN_NAME,
+ options,
+ buf,
+ port);
+ return rbuf;
+}
+
+
+/**
+ * Function called to convert a string address to a binary address.
+ *
+ * @param cls closure (`struct Plugin *`)
* @param addr string address
* @param addrlen length of the address
* @param buf location to store the buffer
plugin = NULL;
optionstr = NULL;
- if ((NULL == addr) || (addrlen == 0))
+ if ((NULL == addr) || (0 == addrlen))
{
- GNUNET_break(0);
+ GNUNET_break (0);
return GNUNET_SYSERR;
}
if ('\0' != addr[addrlen - 1])
{
- GNUNET_break(0);
+ GNUNET_break (0);
return GNUNET_SYSERR;
}
if (strlen (addr) != addrlen - 1)
{
- GNUNET_break(0);
+ GNUNET_break (0);
return GNUNET_SYSERR;
}
plugin = GNUNET_strdup (addr);
optionstr = strchr (plugin, '.');
if (NULL == optionstr)
{
- GNUNET_break(0);
- GNUNET_free(plugin);
+ GNUNET_break (0);
+ GNUNET_free (plugin);
return GNUNET_SYSERR;
}
optionstr[0] = '\0';
address = strchr (optionstr, '.');
if (NULL == address)
{
- GNUNET_break(0);
- GNUNET_free(plugin);
+ GNUNET_break (0);
+ GNUNET_free (plugin);
return GNUNET_SYSERR;
}
address[0] = '\0';
address++;
if (GNUNET_OK !=
- GNUNET_STRINGS_to_address_ip (address, strlen (address),
+ GNUNET_STRINGS_to_address_ip (address,
+ strlen (address),
&socket_address))
{
- GNUNET_break(0);
- GNUNET_free(plugin);
+ GNUNET_break (0);
+ GNUNET_free (plugin);
return GNUNET_SYSERR;
}
-
GNUNET_free(plugin);
switch (socket_address.ss_family)
{
case AF_INET:
- {
- struct IPv4UdpAddress *u4;
- struct sockaddr_in *in4 = (struct sockaddr_in *) &socket_address;
- u4 = GNUNET_new (struct IPv4UdpAddress);
- u4->options = htonl (options);
- u4->ipv4_addr = in4->sin_addr.s_addr;
- u4->u4_port = in4->sin_port;
- *buf = u4;
- *added = sizeof(struct IPv4UdpAddress);
- return GNUNET_OK;
- }
+ {
+ struct IPv4UdpAddress *u4;
+ const struct sockaddr_in *in4 = (const struct sockaddr_in *) &socket_address;
+
+ u4 = GNUNET_new (struct IPv4UdpAddress);
+ u4->options = htonl (options);
+ u4->ipv4_addr = in4->sin_addr.s_addr;
+ u4->u4_port = in4->sin_port;
+ *buf = u4;
+ *added = sizeof (struct IPv4UdpAddress);
+ return GNUNET_OK;
+ }
case AF_INET6:
- {
- struct IPv6UdpAddress *u6;
- struct sockaddr_in6 *in6 = (struct sockaddr_in6 *) &socket_address;
- u6 = GNUNET_new (struct IPv6UdpAddress);
- u6->options = htonl (options);
- u6->ipv6_addr = in6->sin6_addr;
- u6->u6_port = in6->sin6_port;
- *buf = u6;
- *added = sizeof(struct IPv6UdpAddress);
- return GNUNET_OK;
- }
+ {
+ struct IPv6UdpAddress *u6;
+ const struct sockaddr_in6 *in6 = (const struct sockaddr_in6 *) &socket_address;
+
+ u6 = GNUNET_new (struct IPv6UdpAddress);
+ u6->options = htonl (options);
+ u6->ipv6_addr = in6->sin6_addr;
+ u6->u6_port = in6->sin6_port;
+ *buf = u6;
+ *added = sizeof (struct IPv6UdpAddress);
+ return GNUNET_OK;
+ }
default:
- GNUNET_break(0);
+ GNUNET_break (0);
return GNUNET_SYSERR;
}
}
if (NULL == hostname)
{
/* Final call, done */
- ppc->asc (ppc->asc_cls,
- NULL,
- GNUNET_OK);
GNUNET_CONTAINER_DLL_remove (plugin->ppc_dll_head,
plugin->ppc_dll_tail,
ppc);
ppc->resolver_handle = NULL;
+ ppc->asc (ppc->asc_cls,
+ NULL,
+ GNUNET_OK);
GNUNET_free (ppc);
return;
}
/**
- * Convert the transports address to a nice, human-readable
- * format.
+ * Convert the transports address to a nice, human-readable format.
*
* @param cls closure with the `struct Plugin *`
* @param type name of the transport that generated the address
* @param addr one of the addresses of the host, NULL for the last address
- * the specific address format depends on the transport
+ * the specific address format depends on the transport;
+ * a `union UdpAddress`
* @param addrlen length of the address
* @param numeric should (IP) addresses be displayed in numeric form?
* @param timeout after how long should we give up?
{
struct Plugin *plugin = cls;
struct PrettyPrinterContext *ppc;
- const void *sb;
+ const struct sockaddr *sb;
size_t sbs;
struct sockaddr_in a4;
struct sockaddr_in6 a6;
if (addrlen == sizeof(struct IPv6UdpAddress))
{
u6 = addr;
- memset (&a6, 0, sizeof(a6));
+ memset (&a6,
+ 0,
+ sizeof (a6));
a6.sin6_family = AF_INET6;
#if HAVE_SOCKADDR_IN_SIN_LEN
a6.sin6_len = sizeof (a6);
#endif
a6.sin6_port = u6->u6_port;
- memcpy (&a6.sin6_addr, &u6->ipv6_addr, sizeof(struct in6_addr));
+ a6.sin6_addr = u6->ipv6_addr;
port = ntohs (u6->u6_port);
options = ntohl (u6->options);
- sb = &a6;
- sbs = sizeof(a6);
+ sb = (const struct sockaddr *) &a6;
+ sbs = sizeof (a6);
}
- else if (addrlen == sizeof(struct IPv4UdpAddress))
+ else if (addrlen == sizeof (struct IPv4UdpAddress))
{
u4 = addr;
- memset (&a4, 0, sizeof(a4));
+ memset (&a4,
+ 0,
+ sizeof(a4));
a4.sin_family = AF_INET;
#if HAVE_SOCKADDR_IN_SIN_LEN
a4.sin_len = sizeof (a4);
a4.sin_addr.s_addr = u4->ipv4_addr;
port = ntohs (u4->u4_port);
options = ntohl (u4->options);
- sb = &a4;
+ sb = (const struct sockaddr *) &a4;
sbs = sizeof(a4);
}
else
{
/* invalid address */
GNUNET_break_op (0);
- asc (asc_cls, NULL , GNUNET_SYSERR);
- asc (asc_cls, NULL, GNUNET_OK);
+ asc (asc_cls,
+ NULL,
+ GNUNET_SYSERR);
+ asc (asc_cls,
+ NULL,
+ GNUNET_OK);
return;
}
ppc = GNUNET_new (struct PrettyPrinterContext);
ppc->asc_cls = asc_cls;
ppc->port = port;
ppc->options = options;
- if (addrlen == sizeof(struct IPv6UdpAddress))
+ if (addrlen == sizeof (struct IPv6UdpAddress))
ppc->ipv6 = GNUNET_YES;
else
ppc->ipv6 = GNUNET_NO;
sbs,
! numeric,
timeout,
- &append_port, ppc);
+ &append_port,
+ ppc);
}
/**
- * FIXME.
+ * Check if the given port is plausible (must be either our listen
+ * port or our advertised port). If it is neither, we return
+ * #GNUNET_SYSERR.
+ *
+ * @param plugin global variables
+ * @param in_port port number to check
+ * @return #GNUNET_OK if port is either our open or advertised port
*/
-static void
-call_continuation (struct UDP_MessageWrapper *udpw,
- int result)
+static int
+check_port (const struct Plugin *plugin,
+ uint16_t in_port)
{
- struct Session *session = udpw->session;
- struct Plugin *plugin = session->plugin;
- size_t overhead;
+ if ( (plugin->port == in_port) ||
+ (plugin->aport == in_port) )
+ return GNUNET_OK;
+ return GNUNET_SYSERR;
+}
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "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 (udpw->msg_size >= udpw->payload_size)
- overhead = udpw->msg_size - udpw->payload_size;
+/**
+ * Function that will be called to check if a binary address for this
+ * plugin is well-formed and corresponds to an address for THIS peer
+ * (as per our configuration). Naturally, if absolutely necessary,
+ * plugins can be a bit conservative in their answer, but in general
+ * plugins should make sure that the address does not redirect
+ * traffic to a 3rd party that might try to man-in-the-middle our
+ * traffic.
+ *
+ * @param cls closure, should be our handle to the Plugin
+ * @param addr pointer to a `union UdpAddress`
+ * @param addrlen length of @a addr
+ * @return #GNUNET_OK if this is a plausible address for this peer
+ * and transport, #GNUNET_SYSERR if not
+ */
+static int
+udp_plugin_check_address (void *cls,
+ const void *addr,
+ size_t addrlen)
+{
+ struct Plugin *plugin = cls;
+ const struct IPv4UdpAddress *v4;
+ const struct IPv6UdpAddress *v6;
+
+ if (sizeof(struct IPv4UdpAddress) == addrlen)
+ {
+ struct sockaddr_in s4;
+
+ v4 = (const struct IPv4UdpAddress *) addr;
+ if (GNUNET_OK != check_port (plugin,
+ ntohs (v4->u4_port)))
+ return GNUNET_SYSERR;
+ memset (&s4, 0, sizeof (s4));
+ s4.sin_family = AF_INET;
+#if HAVE_SOCKADDR_IN_SIN_LEN
+ s4.sin_len = sizeof (s4);
+#endif
+ s4.sin_port = v4->u4_port;
+ s4.sin_addr.s_addr = v4->ipv4_addr;
+
+ if (GNUNET_OK !=
+ GNUNET_NAT_test_address (plugin->nat,
+ &s4,
+ sizeof (struct sockaddr_in)))
+ return GNUNET_SYSERR;
+ }
+ else if (sizeof(struct IPv6UdpAddress) == addrlen)
+ {
+ struct sockaddr_in6 s6;
+
+ v6 = (const struct IPv6UdpAddress *) addr;
+ if (IN6_IS_ADDR_LINKLOCAL (&v6->ipv6_addr))
+ return GNUNET_OK; /* plausible, if unlikely... */
+ memset (&s6, 0, sizeof (s6));
+ s6.sin6_family = AF_INET6;
+#if HAVE_SOCKADDR_IN_SIN_LEN
+ s6.sin6_len = sizeof (s6);
+#endif
+ s6.sin6_port = v6->u6_port;
+ s6.sin6_addr = v6->ipv6_addr;
+
+ if (GNUNET_OK !=
+ GNUNET_NAT_test_address (plugin->nat,
+ &s6,
+ sizeof(struct sockaddr_in6)))
+ return GNUNET_SYSERR;
+ }
else
- overhead = udpw->msg_size;
+ {
+ GNUNET_break_op (0);
+ return GNUNET_SYSERR;
+ }
+ return GNUNET_OK;
+}
+
+
+/**
+ * Our external IP address/port mapping has changed.
+ *
+ * @param cls closure, the `struct Plugin`
+ * @param app_ctx[in,out] location where the app can store stuff
+ * on add and retrieve it on remove
+ * @param add_remove #GNUNET_YES to mean the new public IP address,
+ * #GNUNET_NO to mean the previous (now invalid) one
+ * @param ac address class the address belongs to
+ * @param addr either the previous or the new public IP address
+ * @param addrlen actual length of the @a addr
+ */
+static void
+udp_nat_port_map_callback (void *cls,
+ void **app_ctx,
+ int add_remove,
+ enum GNUNET_NAT_AddressClass ac,
+ const struct sockaddr *addr,
+ socklen_t addrlen)
+{
+ struct Plugin *plugin = cls;
+ struct GNUNET_HELLO_Address *address;
+ struct IPv4UdpAddress u4;
+ struct IPv6UdpAddress u6;
+ void *arg;
+ size_t args;
- switch (result)
+ (void) app_ctx;
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ (GNUNET_YES == add_remove)
+ ? "NAT notification to add address `%s'\n"
+ : "NAT notification to remove address `%s'\n",
+ GNUNET_a2s (addr,
+ addrlen));
+ /* convert 'address' to our internal format */
+ switch (addr->sa_family)
{
- case GNUNET_OK:
- switch (udpw->msg_type)
+ case AF_INET:
{
- case UMT_MSG_UNFRAGMENTED:
- if (NULL != udpw->cont)
- {
- /* Transport continuation */
- udpw->cont (udpw->cont_cls, &udpw->session->target, result,
- udpw->payload_size, udpw->msg_size);
- }
- 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 UMT_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 UMT_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 UMT_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;
- default:
- GNUNET_break(0);
+ const struct sockaddr_in *i4;
+
+ GNUNET_assert (sizeof(struct sockaddr_in) == addrlen);
+ i4 = (const struct sockaddr_in *) addr;
+ if (0 == ntohs (i4->sin_port))
+ return; /* Port = 0 means unmapped, ignore these for UDP. */
+ memset (&u4,
+ 0,
+ sizeof(u4));
+ u4.options = htonl (plugin->myoptions);
+ u4.ipv4_addr = i4->sin_addr.s_addr;
+ u4.u4_port = i4->sin_port;
+ arg = &u4;
+ args = sizeof (struct IPv4UdpAddress);
break;
}
- break;
- case GNUNET_SYSERR:
- switch (udpw->msg_type)
+ case AF_INET6:
{
- case UMT_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 UMT_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 UMT_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);
- break;
- case UMT_MSG_ACK:
- /* ACK message: failed to send */
- GNUNET_STATISTICS_update (plugin->env->stats,
- "# UDP, ACK msgs, messages, sent, failure", 1, GNUNET_NO);
- break;
- default:
- GNUNET_break(0);
+ const struct sockaddr_in6 *i6;
+
+ GNUNET_assert (sizeof(struct sockaddr_in6) == addrlen);
+ i6 = (const struct sockaddr_in6 *) addr;
+ if (0 == ntohs (i6->sin6_port))
+ return; /* Port = 0 means unmapped, ignore these for UDP. */
+ memset (&u6,
+ 0,
+ sizeof(u6));
+ u6.options = htonl (plugin->myoptions);
+ u6.ipv6_addr = i6->sin6_addr;
+ u6.u6_port = i6->sin6_port;
+ arg = &u6;
+ args = sizeof (struct IPv6UdpAddress);
break;
}
- break;
default:
- GNUNET_break(0);
- break;
+ GNUNET_break (0);
+ return;
}
+ /* modify our published address list */
+ /* TODO: use 'ac' here in the future... */
+ address = GNUNET_HELLO_address_allocate (plugin->env->my_identity,
+ PLUGIN_NAME,
+ arg,
+ args,
+ GNUNET_HELLO_ADDRESS_INFO_NONE);
+ plugin->env->notify_address (plugin->env->cls,
+ add_remove,
+ address);
+ GNUNET_HELLO_address_free (address);
}
+/* ********************* Finding sessions ******************* */
+
+
/**
- * Check if the given port is plausible (must be either our listen
- * port or our advertised port). If it is neither, we return
- * #GNUNET_SYSERR.
+ * Closure for #session_cmp_it().
+ */
+struct GNUNET_ATS_SessionCompareContext
+{
+ /**
+ * Set to session matching the address.
+ */
+ struct GNUNET_ATS_Session *res;
+
+ /**
+ * Address we are looking for.
+ */
+ const struct GNUNET_HELLO_Address *address;
+};
+
+
+/**
+ * Find a session with a matching address.
*
- * @param plugin global variables
- * @param in_port port number to check
- * @return #GNUNET_OK if port is either open_port or adv_port
+ * @param cls the `struct GNUNET_ATS_SessionCompareContext *`
+ * @param key peer identity (unused)
+ * @param value the `struct GNUNET_ATS_Session *`
+ * @return #GNUNET_NO if we found the session, #GNUNET_OK if not
*/
static int
-check_port (struct Plugin *plugin,
- uint16_t in_port)
+session_cmp_it (void *cls,
+ const struct GNUNET_PeerIdentity *key,
+ void *value)
{
- if ((in_port == plugin->port) || (in_port == plugin->aport))
- return GNUNET_OK;
- return GNUNET_SYSERR;
+ struct GNUNET_ATS_SessionCompareContext *cctx = cls;
+ struct GNUNET_ATS_Session *s = value;
+
+ if (0 == GNUNET_HELLO_address_cmp (s->address,
+ cctx->address))
+ {
+ GNUNET_assert (GNUNET_NO == s->in_destroy);
+ cctx->res = s;
+ return GNUNET_NO;
+ }
+ return GNUNET_OK;
}
/**
- * Function that will be called to check if a binary address for this
- * plugin is well-formed and corresponds to an address for THIS peer
- * (as per our configuration). Naturally, if absolutely necessary,
- * plugins can be a bit conservative in their answer, but in general
- * plugins should make sure that the address does not redirect
- * traffic to a 3rd party that might try to man-in-the-middle our
- * traffic.
+ * Locate an existing session the transport service is using to
+ * send data to another peer. Performs some basic sanity checks
+ * on the address and then tries to locate a matching session.
*
- * @param cls closure, should be our handle to the Plugin
- * @param addr pointer to the address
- * @param addrlen length of @a addr
- * @return #GNUNET_OK if this is a plausible address for this peer
- * and transport, #GNUNET_SYSERR if not
+ * @param cls the plugin
+ * @param address the address we should locate the session by
+ * @return the session if it exists, or NULL if it is not found
*/
-static int
-udp_plugin_check_address (void *cls,
- const void *addr,
- size_t addrlen)
+static struct GNUNET_ATS_Session *
+udp_plugin_lookup_session (void *cls,
+ const struct GNUNET_HELLO_Address *address)
{
struct Plugin *plugin = cls;
- struct IPv4UdpAddress *v4;
- struct IPv6UdpAddress *v6;
+ const struct IPv6UdpAddress *udp_a6;
+ const struct IPv4UdpAddress *udp_a4;
+ struct GNUNET_ATS_SessionCompareContext cctx;
- if ((addrlen != sizeof(struct IPv4UdpAddress))
- && (addrlen != sizeof(struct IPv6UdpAddress)))
+ if (NULL == address->address)
{
- GNUNET_break_op(0);
- return GNUNET_SYSERR;
+ GNUNET_break (0);
+ return NULL;
}
- if (addrlen == sizeof(struct IPv4UdpAddress))
+ if (sizeof(struct IPv4UdpAddress) == address->address_length)
{
- v4 = (struct IPv4UdpAddress *) addr;
- if (GNUNET_OK != check_port (plugin, ntohs (v4->u4_port)))
- return GNUNET_SYSERR;
- if (GNUNET_OK
- != GNUNET_NAT_test_address (plugin->nat, &v4->ipv4_addr,
- sizeof(struct in_addr)))
- return GNUNET_SYSERR;
+ if (NULL == plugin->sockv4)
+ return NULL;
+ udp_a4 = (const struct IPv4UdpAddress *) address->address;
+ if (0 == udp_a4->u4_port)
+ {
+ GNUNET_break (0);
+ return NULL;
+ }
}
- else
+ else if (sizeof(struct IPv6UdpAddress) == address->address_length)
{
- v6 = (struct IPv6UdpAddress *) addr;
- if (IN6_IS_ADDR_LINKLOCAL (&v6->ipv6_addr))
+ if (NULL == plugin->sockv6)
+ return NULL;
+ udp_a6 = (const struct IPv6UdpAddress *) address->address;
+ if (0 == udp_a6->u6_port)
{
- GNUNET_break_op(0);
- return GNUNET_SYSERR;
+ GNUNET_break (0);
+ return NULL;
}
- if (GNUNET_OK != check_port (plugin, ntohs (v6->u6_port)))
- return GNUNET_SYSERR;
- if (GNUNET_OK !=
- GNUNET_NAT_test_address (plugin->nat,
- &v6->ipv6_addr,
- sizeof(struct in6_addr)))
- return GNUNET_SYSERR;
}
- return GNUNET_OK;
+ else
+ {
+ GNUNET_break (0);
+ return NULL;
+ }
+
+ /* check if session already exists */
+ cctx.address = address;
+ cctx.res = NULL;
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Looking for existing session for peer `%s' with address `%s'\n",
+ GNUNET_i2s (&address->peer),
+ udp_address_to_string (plugin,
+ address->address,
+ address->address_length));
+ GNUNET_CONTAINER_multipeermap_get_multiple (plugin->sessions,
+ &address->peer,
+ &session_cmp_it,
+ &cctx);
+ if (NULL == cctx.res)
+ return NULL;
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Found existing session %p\n",
+ cctx.res);
+ return cctx.res;
}
+/* ********************** Timeout ****************** */
+
+
/**
- * Function to free last resources associated with a session.
+ * Increment session timeout due to activity.
*
- * @param s session to free
+ * @param s session to reschedule timeout activity for
*/
static void
-free_session (struct Session *s)
+reschedule_session_timeout (struct GNUNET_ATS_Session *s)
{
- if (NULL != s->frag_ctx)
+ if (GNUNET_YES == s->in_destroy)
+ return;
+ GNUNET_assert (NULL != s->timeout_task);
+ s->timeout = GNUNET_TIME_relative_to_absolute (UDP_SESSION_TIME_OUT);
+}
+
+
+
+/**
+ * Function that will be called whenever the transport service wants to
+ * notify the plugin that a session is still active and in use and
+ * therefore the session timeout for this session has to be updated
+ *
+ * @param cls closure with the `struct Plugin`
+ * @param peer which peer was the session for
+ * @param session which session is being updated
+ */
+static void
+udp_plugin_update_session_timeout (void *cls,
+ const struct GNUNET_PeerIdentity *peer,
+ struct GNUNET_ATS_Session *session)
+{
+ struct Plugin *plugin = cls;
+
+ if (GNUNET_YES !=
+ GNUNET_CONTAINER_multipeermap_contains_value (plugin->sessions,
+ peer,
+ session))
{
- GNUNET_FRAGMENT_context_destroy (s->frag_ctx->frag, NULL, NULL );
- GNUNET_free(s->frag_ctx);
- s->frag_ctx = NULL;
+ GNUNET_break (0);
+ return;
}
- GNUNET_free(s);
+ /* Reschedule session timeout */
+ reschedule_session_timeout (session);
}
+/* ************************* Sending ************************ */
+
+
/**
- * Remove a message from the transmission queue.
+ * Remove the given message from the transmission queue and
+ * update all applicable statistics.
*
* @param plugin the UDP plugin
- * @param udpw message wrapper to queue
+ * @param udpw message wrapper to dequeue
*/
static void
dequeue (struct Plugin *plugin,
struct UDP_MessageWrapper *udpw)
{
- struct Session *session = udpw->session;
+ struct GNUNET_ATS_Session *session = udpw->session;
if (plugin->bytes_in_buffer < udpw->msg_size)
{
else
{
GNUNET_STATISTICS_update (plugin->env->stats,
- "# UDP, total, bytes in buffers",
- -(long long) udpw->msg_size,
+ "# UDP, total bytes in send buffers",
+ - (long long) udpw->msg_size,
GNUNET_NO);
plugin->bytes_in_buffer -= udpw->msg_size;
}
GNUNET_STATISTICS_update (plugin->env->stats,
- "# UDP, total, msgs in buffers",
- -1, GNUNET_NO);
- if (udpw->session->address->address_length == sizeof(struct IPv4UdpAddress))
+ "# UDP, total messages in send buffers",
+ -1,
+ GNUNET_NO);
+ if (sizeof(struct IPv4UdpAddress) == udpw->session->address->address_length)
+ {
GNUNET_CONTAINER_DLL_remove (plugin->ipv4_queue_head,
plugin->ipv4_queue_tail,
udpw);
- else if (udpw->session->address->address_length == sizeof(struct IPv6UdpAddress))
+ }
+ else if (sizeof(struct IPv6UdpAddress) == udpw->session->address->address_length)
+ {
GNUNET_CONTAINER_DLL_remove (plugin->ipv6_queue_head,
plugin->ipv6_queue_tail,
udpw);
+ }
else
{
GNUNET_break (0);
/**
- * FIXME.
- */
-static void
-fragmented_message_done (struct UDP_FragmentationContext *fc,
+ * Enqueue a message for transmission and update statistics.
+ *
+ * @param plugin the UDP plugin
+ * @param udpw message wrapper to queue
+ */
+static void
+enqueue (struct Plugin *plugin,
+ struct UDP_MessageWrapper *udpw)
+{
+ struct GNUNET_ATS_Session *session = udpw->session;
+
+ if (GNUNET_YES == session->in_destroy)
+ {
+ GNUNET_break (0);
+ GNUNET_free (udpw);
+ return;
+ }
+ if (plugin->bytes_in_buffer > INT64_MAX - udpw->msg_size)
+ {
+ GNUNET_break (0);
+ }
+ else
+ {
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, total bytes in send buffers",
+ udpw->msg_size,
+ GNUNET_NO);
+ plugin->bytes_in_buffer += udpw->msg_size;
+ }
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, total messages in send buffers",
+ 1,
+ GNUNET_NO);
+ if (sizeof (struct IPv4UdpAddress) == udpw->session->address->address_length)
+ {
+ GNUNET_CONTAINER_DLL_insert(plugin->ipv4_queue_head,
+ plugin->ipv4_queue_tail,
+ udpw);
+ }
+ else if (sizeof (struct IPv6UdpAddress) == udpw->session->address->address_length)
+ {
+ GNUNET_CONTAINER_DLL_insert (plugin->ipv6_queue_head,
+ plugin->ipv6_queue_tail,
+ udpw);
+ }
+ else
+ {
+ GNUNET_break (0);
+ udpw->cont (udpw->cont_cls,
+ &session->target,
+ GNUNET_SYSERR,
+ udpw->msg_size,
+ 0);
+ GNUNET_free (udpw);
+ return;
+ }
+ session->msgs_in_queue++;
+ session->bytes_in_queue += udpw->msg_size;
+}
+
+
+/**
+ * We have completed our (attempt) to transmit a message that had to
+ * be fragmented -- either because we got an ACK saying that all
+ * fragments were received, or because of timeout / disconnect. Clean
+ * up our state.
+ *
+ * @param frag_ctx fragmentation context to clean up
+ * @param result #GNUNET_OK if we succeeded (got ACK),
+ * #GNUNET_SYSERR if the transmission failed
+ */
+static void
+fragmented_message_done (struct UDP_FragmentationContext *frag_ctx,
int result)
{
- struct Plugin *plugin = fc->plugin;
- struct Session *s = fc->session;
+ struct Plugin *plugin = frag_ctx->plugin;
+ struct GNUNET_ATS_Session *s = frag_ctx->session;
struct UDP_MessageWrapper *udpw;
struct UDP_MessageWrapper *tmp;
- struct UDP_MessageWrapper dummy;
+ size_t overhead;
+ struct GNUNET_TIME_Relative delay;
LOG (GNUNET_ERROR_TYPE_DEBUG,
- "%p : Fragmented message removed with result %s\n",
- fc,
+ "%p: Fragmented message removed with result %s\n",
+ frag_ctx,
(result == GNUNET_SYSERR) ? "FAIL" : "SUCCESS");
-
/* Call continuation for fragmented message */
- memset (&dummy, 0, sizeof(dummy));
- dummy.msg_type = UMT_MSG_FRAGMENTED_COMPLETE;
- dummy.msg_size = s->frag_ctx->on_wire_size;
- dummy.payload_size = s->frag_ctx->payload_size;
- dummy.frag_ctx = s->frag_ctx;
- dummy.cont = NULL;
- dummy.cont_cls = NULL;
- dummy.session = s;
- call_continuation (&dummy, result);
- /* Remove leftover fragments from queue */
+ if (frag_ctx->on_wire_size >= frag_ctx->payload_size)
+ overhead = frag_ctx->on_wire_size - frag_ctx->payload_size;
+ else
+ overhead = frag_ctx->on_wire_size;
+ delay = GNUNET_TIME_absolute_get_duration (frag_ctx->start_time);
+ if (delay.rel_value_us > GNUNET_CONSTANTS_LATENCY_WARN.rel_value_us)
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "Fragmented message acknowledged after %s (expected at %s)\n",
+ GNUNET_STRINGS_relative_time_to_string (delay,
+ GNUNET_YES),
+ GNUNET_STRINGS_absolute_time_to_string (frag_ctx->next_frag_time));
+ }
+ else
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Fragmented message acknowledged after %s (expected at %s)\n",
+ GNUNET_STRINGS_relative_time_to_string (delay,
+ GNUNET_YES),
+ GNUNET_STRINGS_absolute_time_to_string (frag_ctx->next_frag_time));
+ }
+
+ if (NULL != frag_ctx->cont)
+ frag_ctx->cont (frag_ctx->cont_cls,
+ &s->target,
+ result,
+ s->frag_ctx->payload_size,
+ frag_ctx->on_wire_size);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, fragmented messages active",
+ -1,
+ GNUNET_NO);
+
+ if (GNUNET_OK == result)
+ {
+ 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",
+ s->frag_ctx->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",
+ s->frag_ctx->payload_size,
+ GNUNET_NO);
+ }
+ else
+ {
+ 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",
+ s->frag_ctx->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);
+ }
+
+ /* Remove remaining fragments from queue, no need to transmit those
+ any longer. */
if (s->address->address_length == sizeof(struct IPv6UdpAddress))
{
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);
- }
+ if ( (udpw->frag_ctx != NULL) &&
+ (udpw->frag_ctx == frag_ctx) )
+ {
+ dequeue (plugin,
+ udpw);
+ GNUNET_free (udpw);
+ }
udpw = tmp;
}
}
if (s->address->address_length == sizeof(struct IPv4UdpAddress))
{
udpw = plugin->ipv4_queue_head;
- while (udpw != NULL )
+ while (NULL != udpw)
{
tmp = udpw->next;
- if ((NULL != udpw->frag_ctx) && (udpw->frag_ctx == s->frag_ctx))
+ if ( (NULL != udpw->frag_ctx) &&
+ (udpw->frag_ctx == frag_ctx) )
{
- dequeue (plugin, udpw);
- call_continuation (udpw, GNUNET_SYSERR);
- GNUNET_free(udpw);
+ dequeue (plugin,
+ udpw);
+ GNUNET_free (udpw);
}
udpw = tmp;
}
notify_session_monitor (s->plugin,
s,
GNUNET_TRANSPORT_SS_UPDATE);
- /* Destroy fragmentation context */
- GNUNET_FRAGMENT_context_destroy (fc->frag,
+ GNUNET_FRAGMENT_context_destroy (frag_ctx->frag,
&s->last_expected_msg_delay,
&s->last_expected_ack_delay);
s->frag_ctx = NULL;
- GNUNET_free (fc);
+ GNUNET_free (frag_ctx);
}
/**
- * Scan the heap for a receive context with the given address.
+ * We are finished with a fragment in the message queue.
+ * Notify the continuation and update statistics.
*
- * @param cls the `struct FindReceiveContext`
- * @param node internal node of the heap
- * @param element value stored at the node (a 'struct ReceiveContext')
- * @param cost cost associated with the node
- * @return #GNUNET_YES if we should continue to iterate,
- * #GNUNET_NO if not.
+ * @param cls the `struct Plugin *`
+ * @param udpw the queue entry
+ * @param result #GNUNET_OK on success, #GNUNET_SYSERR on failure
*/
-static int
-find_receive_context (void *cls,
- struct GNUNET_CONTAINER_HeapNode *node,
- void *element,
- GNUNET_CONTAINER_HeapCostType cost)
+static void
+qc_fragment_sent (void *cls,
+ struct UDP_MessageWrapper *udpw,
+ int result)
{
- struct FindReceiveContext *frc = cls;
- struct DefragContext *e = element;
+ struct Plugin *plugin = cls;
- if ((frc->addr_len == e->addr_len)
- && (0 == memcmp (frc->addr, e->src_addr, frc->addr_len)))
+ GNUNET_assert (NULL != udpw->frag_ctx);
+ if (GNUNET_OK == result)
{
- frc->rc = e;
- return GNUNET_NO;
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Fragment of message with %u bytes transmitted to %s\n",
+ (unsigned int) udpw->payload_size,
+ GNUNET_i2s (&udpw->session->target));
+ GNUNET_FRAGMENT_context_transmission_done (udpw->frag_ctx->frag);
+ 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);
+ }
+ else
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Failed to transmit fragment of message with %u bytes to %s\n",
+ (unsigned int) udpw->payload_size,
+ GNUNET_i2s (&udpw->session->target));
+ fragmented_message_done (udpw->frag_ctx,
+ GNUNET_SYSERR);
+ 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);
}
- return GNUNET_YES;
}
/**
- * Functions with this signature are called whenever we need
- * to close a session due to a disconnect or failure to
- * establish a connection.
+ * Function that is called with messages created by the fragmentation
+ * module. In the case of the `proc` callback of the
+ * #GNUNET_FRAGMENT_context_create() function, this function must
+ * eventually call #GNUNET_FRAGMENT_context_transmission_done().
*
- * @param cls closure with the `struct Plugin`
- * @param s session to close down
- * @return #GNUNET_OK on success
+ * @param cls closure, the `struct UDP_FragmentationContext`
+ * @param msg the message that was created
*/
-static int
-udp_disconnect_session (void *cls,
- struct Session *s)
+static void
+enqueue_fragment (void *cls,
+ const struct GNUNET_MessageHeader *msg)
{
- struct Plugin *plugin = cls;
+ struct UDP_FragmentationContext *frag_ctx = cls;
+ struct Plugin *plugin = frag_ctx->plugin;
struct UDP_MessageWrapper *udpw;
- struct UDP_MessageWrapper *next;
- struct FindReceiveContext frc;
+ struct GNUNET_ATS_Session *session = frag_ctx->session;
+ size_t msg_len = ntohs (msg->size);
- GNUNET_assert(GNUNET_YES != s->in_destroy);
- LOG(GNUNET_ERROR_TYPE_DEBUG, "Session %p to peer `%s' address ended\n", s,
- GNUNET_i2s (&s->target),
- udp_address_to_string (NULL, s->address->address, s->address->address_length));
- /* stop timeout task */
- if (NULL != s->timeout_task)
- {
- GNUNET_SCHEDULER_cancel (s->timeout_task);
- s->timeout_task = NULL;
- }
- if (NULL != s->frag_ctx)
- {
- /* Remove fragmented message due to disconnect */
- fragmented_message_done (s->frag_ctx, GNUNET_SYSERR);
- }
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Enqueuing fragment with %u bytes\n",
+ msg_len);
+ udpw = GNUNET_malloc (sizeof (struct UDP_MessageWrapper) + msg_len);
+ udpw->session = session;
+ udpw->msg_buf = (char *) &udpw[1];
+ udpw->msg_size = msg_len;
+ udpw->payload_size = msg_len; /* FIXME: minus fragment overhead */
+ udpw->timeout = frag_ctx->timeout;
+ udpw->start_time = frag_ctx->start_time;
+ udpw->transmission_time = frag_ctx->next_frag_time;
+ frag_ctx->next_frag_time
+ = GNUNET_TIME_absolute_add (frag_ctx->next_frag_time,
+ frag_ctx->flow_delay_from_other_peer);
+ udpw->frag_ctx = frag_ctx;
+ udpw->qc = &qc_fragment_sent;
+ udpw->qc_cls = plugin;
+ GNUNET_memcpy (udpw->msg_buf,
+ msg,
+ msg_len);
+ enqueue (plugin,
+ udpw);
+ if (session->address->address_length == sizeof (struct IPv4UdpAddress))
+ schedule_select_v4 (plugin);
+ else
+ schedule_select_v6 (plugin);
+}
- frc.rc = NULL;
- frc.addr = s->address->address;
- frc.addr_len = s->address->address_length;
- /* Lookup existing receive context for this address */
- if (NULL != plugin->defrag_ctxs)
- {
- GNUNET_CONTAINER_heap_iterate (plugin->defrag_ctxs,
- &find_receive_context,
- &frc);
- if (NULL != frc.rc)
- {
- struct DefragContext *d_ctx = frc.rc;
- GNUNET_CONTAINER_heap_remove_node (d_ctx->hnode);
- GNUNET_DEFRAGMENT_context_destroy (d_ctx->defrag);
- GNUNET_free (d_ctx);
- }
- }
- next = plugin->ipv4_queue_head;
- while (NULL != (udpw = next))
- {
- next = udpw->next;
- if (udpw->session == s)
- {
- dequeue (plugin, udpw);
- call_continuation (udpw, GNUNET_SYSERR);
- GNUNET_free(udpw);
- }
- }
- next = plugin->ipv6_queue_head;
- while (NULL != (udpw = next))
+/**
+ * We are finished with a message from the message queue.
+ * Notify the continuation and update statistics.
+ *
+ * @param cls the `struct Plugin *`
+ * @param udpw the queue entry
+ * @param result #GNUNET_OK on success, #GNUNET_SYSERR on failure
+ */
+static void
+qc_message_sent (void *cls,
+ struct UDP_MessageWrapper *udpw,
+ int result)
+{
+ struct Plugin *plugin = cls;
+ size_t overhead;
+ struct GNUNET_TIME_Relative delay;
+
+ if (udpw->msg_size >= udpw->payload_size)
+ overhead = udpw->msg_size - udpw->payload_size;
+ else
+ overhead = udpw->msg_size;
+
+ if (NULL != udpw->cont)
{
- next = udpw->next;
- if (udpw->session == s)
+ delay = GNUNET_TIME_absolute_get_duration (udpw->start_time);
+ if (delay.rel_value_us > GNUNET_CONSTANTS_LATENCY_WARN.rel_value_us)
{
- dequeue (plugin, udpw);
- call_continuation (udpw, GNUNET_SYSERR);
- GNUNET_free(udpw);
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "Message sent via UDP with delay of %s\n",
+ GNUNET_STRINGS_relative_time_to_string (delay,
+ GNUNET_YES));
}
- }
- notify_session_monitor (s->plugin,
- s,
- GNUNET_TRANSPORT_SS_DONE);
- plugin->env->session_end (plugin->env->cls,
- s->address,
- s);
-
- if (NULL != s->frag_ctx)
- {
- if (NULL != s->frag_ctx->cont)
+ else
{
- 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));
+ "Message sent via UDP with delay of %s\n",
+ GNUNET_STRINGS_relative_time_to_string (delay,
+ GNUNET_YES));
}
+ udpw->cont (udpw->cont_cls,
+ &udpw->session->target,
+ result,
+ udpw->payload_size,
+ overhead);
}
-
- GNUNET_assert(GNUNET_YES ==
- GNUNET_CONTAINER_multipeermap_remove (plugin->sessions,
- &s->target,
- s));
- GNUNET_STATISTICS_set (plugin->env->stats,
- "# UDP sessions active",
- GNUNET_CONTAINER_multipeermap_size (plugin->sessions),
- GNUNET_NO);
- if (s->rc > 0)
+ if (GNUNET_OK == result)
{
- s->in_destroy = GNUNET_YES;
+ 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);
}
else
{
- GNUNET_HELLO_address_free (s->address);
- free_session (s);
+ 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);
}
- return GNUNET_OK;
}
/**
- * Function that is called to get the keepalive factor.
- * #GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT is divided by this number to
- * calculate the interval between keepalive packets.
+ * Function that can be used by the transport service to transmit a
+ * message using the plugin. Note that in the case of a peer
+ * disconnecting, the continuation MUST be called prior to the
+ * disconnect notification itself. This function will be called with
+ * this peer's HELLO message to initiate a fresh connection to another
+ * peer.
*
- * @param cls closure with the `struct Plugin`
- * @return keepalive factor
- */
-static unsigned int
-udp_query_keepalive_factor (void *cls)
-{
- return 15;
-}
-
-
-/**
- * Destroy a session, plugin is being unloaded.
- *
- * @param cls the `struct Plugin`
- * @param key hash of public key of target peer
- * @param value a `struct PeerSession *` to clean up
- * @return #GNUNET_OK (continue to iterate)
- */
-static int
-disconnect_and_free_it (void *cls,
- const struct GNUNET_PeerIdentity *key,
- void *value)
-{
- struct Plugin *plugin = cls;
-
- udp_disconnect_session (plugin, value);
- return GNUNET_OK;
-}
-
-
-/**
- * Disconnect from a remote node. Clean up session if we have one for
- * this peer.
- *
- * @param cls closure for this call (should be handle to Plugin)
- * @param target the peeridentity of the peer to disconnect
- * @return #GNUNET_OK on success, #GNUNET_SYSERR if the operation failed
+ * @param cls closure
+ * @param s which session must be used
+ * @param msgbuf the message to transmit
+ * @param msgbuf_size number of bytes in @a msgbuf
+ * @param priority how important is the message (most plugins will
+ * ignore message priority and just FIFO)
+ * @param to how long to wait at most for the transmission (does not
+ * require plugins to discard the message after the timeout,
+ * just advisory for the desired delay; most plugins will ignore
+ * this as well)
+ * @param cont continuation to call once the message has
+ * been transmitted (or if the transport is ready
+ * for the next transmission call; or if the
+ * peer disconnected...); can be NULL
+ * @param cont_cls closure for @a cont
+ * @return number of bytes used (on the physical network, with overheads);
+ * -1 on hard errors (i.e. address invalid); 0 is a legal value
+ * and does NOT mean that the message was not transmitted (DV)
*/
-static void
-udp_disconnect (void *cls,
- const struct GNUNET_PeerIdentity *target)
+static ssize_t
+udp_plugin_send (void *cls,
+ struct GNUNET_ATS_Session *s,
+ const char *msgbuf,
+ size_t msgbuf_size,
+ unsigned int priority,
+ struct GNUNET_TIME_Relative to,
+ GNUNET_TRANSPORT_TransmitContinuation cont,
+ void *cont_cls)
{
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_ALIGN;
+ struct GNUNET_TIME_Relative latency;
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Disconnecting from peer `%s'\n",
- GNUNET_i2s (target));
- /* Clean up sessions */
- GNUNET_CONTAINER_multipeermap_get_multiple (plugin->sessions,
- target,
- &disconnect_and_free_it,
- plugin);
-}
-
-
-/**
- * Session was idle, so disconnect it
- *
- * @param cls the `struct Session` to time out
- * @param tc scheduler context
- */
-static void
-session_timeout (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
- struct Session *s = cls;
- struct Plugin *plugin = s->plugin;
- struct GNUNET_TIME_Relative left;
-
- s->timeout_task = NULL;
- left = GNUNET_TIME_absolute_get_remaining (s->timeout);
- if (left.rel_value_us > 0)
+ if ( (sizeof(struct IPv6UdpAddress) == s->address->address_length) &&
+ (NULL == plugin->sockv6) )
+ return GNUNET_SYSERR;
+ if ( (sizeof(struct IPv4UdpAddress) == s->address->address_length) &&
+ (NULL == plugin->sockv4) )
+ return GNUNET_SYSERR;
+ if (udpmlen >= GNUNET_MAX_MESSAGE_SIZE)
{
- /* not actually our turn yet, but let's at least update
- the monitor, it may think we're about to die ... */
- notify_session_monitor (s->plugin,
- s,
- GNUNET_TRANSPORT_SS_UPDATE);
- s->timeout_task = GNUNET_SCHEDULER_add_delayed (left,
- &session_timeout,
- s);
- return;
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ if (GNUNET_YES !=
+ GNUNET_CONTAINER_multipeermap_contains_value (plugin->sessions,
+ &s->target,
+ s))
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
}
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Session %p was idle for %s, disconnecting\n",
- s,
- GNUNET_STRINGS_relative_time_to_string (UDP_SESSION_TIME_OUT,
- GNUNET_YES));
- /* call session destroy function */
- udp_disconnect_session (plugin, s);
-}
-
-
-/**
- * Increment session timeout due to activity
- *
- * @param s session to reschedule timeout activity for
- */
-static void
-reschedule_session_timeout (struct Session *s)
-{
- if (GNUNET_YES == s->in_destroy)
- return;
- GNUNET_assert(NULL != s->timeout_task);
- s->timeout = GNUNET_TIME_relative_to_absolute (UDP_SESSION_TIME_OUT);
-}
-
-
-/**
- * FIXME.
- */
-static struct Session *
-create_session (struct Plugin *plugin,
- const struct GNUNET_HELLO_Address *address)
-{
- struct Session *s;
-
- s = GNUNET_new (struct Session);
- s->plugin = plugin;
- s->address = GNUNET_HELLO_address_copy (address);
- s->target = address->peer;
- 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;
- s->timeout = GNUNET_TIME_relative_to_absolute (UDP_SESSION_TIME_OUT);
- s->timeout_task = GNUNET_SCHEDULER_add_delayed (UDP_SESSION_TIME_OUT,
- &session_timeout, s);
- return s;
-}
-
-
-/**
- * Function obtain the network type for a session
- *
- * @param cls closure ('struct Plugin*')
- * @param session the session
- * @return the network type
- */
-static enum GNUNET_ATS_Network_Type
-udp_get_network (void *cls,
- struct Session *session)
-{
- return ntohl (session->ats.value);
-}
-
-
-/**
- * Closure for #session_cmp_it().
- */
-struct SessionCompareContext
-{
- /**
- * Set to session matching the address.
- */
- struct Session *res;
-
- /**
- * Address we are looking for.
- */
- const struct GNUNET_HELLO_Address *address;
-};
-
-
-/**
- * Find a session with a matching address.
- *
- * @param cls the `struct SessionCompareContext *`
- * @param key peer identity (unused)
- * @param value the `struct Session *`
- * @return #GNUNET_NO if we found the session, #GNUNET_OK if not
- */
-static int
-session_cmp_it (void *cls,
- const struct GNUNET_PeerIdentity *key,
- void *value)
-{
- struct SessionCompareContext *cctx = cls;
- const struct GNUNET_HELLO_Address *address = cctx->address;
- struct Session *s = value;
-
LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Comparing address %s <-> %s\n",
- udp_address_to_string (NULL,
- address->address,
- address->address_length),
- udp_address_to_string (NULL,
+ "UDP transmits %u-byte message to `%s' using address `%s'\n",
+ udpmlen,
+ GNUNET_i2s (&s->target),
+ udp_address_to_string (plugin,
s->address->address,
s->address->address_length));
- if (0 == GNUNET_HELLO_address_cmp(s->address, cctx->address))
- {
- cctx->res = s;
- return GNUNET_NO;
- }
- return GNUNET_YES;
-}
-
-/**
- * Creates a new outbound session the transport service will use to
- * send data to the peer
- *
- * @param cls the plugin
- * @param address the address
- * @return the session or NULL of max connections exceeded
- */
-static struct Session *
-udp_plugin_lookup_session (void *cls,
- const struct GNUNET_HELLO_Address *address)
-{
- struct Plugin * plugin = cls;
- struct IPv6UdpAddress *udp_a6;
- struct IPv4UdpAddress *udp_a4;
- struct SessionCompareContext cctx;
-
- if ( (NULL == address->address) ||
- ((address->address_length != sizeof (struct IPv4UdpAddress)) &&
- (address->address_length != sizeof (struct IPv6UdpAddress))))
- {
- LOG (GNUNET_ERROR_TYPE_WARNING,
- _("Trying to create session for address of unexpected length %u (should be %u or %u)\n"),
- address->address_length,
- sizeof (struct IPv4UdpAddress),
- sizeof (struct IPv6UdpAddress));
- return NULL;
- }
+ udp = (struct UDPMessage *) mbuf;
+ 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;
- if (address->address_length == sizeof(struct IPv4UdpAddress))
+ /* We do not update the session time out here! Otherwise this
+ * session will not timeout since we send keep alive before session
+ * can timeout.
+ *
+ * For UDP we update session timeout only on receive, this will
+ * cover keep alives, since remote peer will reply with keep alive
+ * responses!
+ */
+ if (udpmlen <= UDP_MTU)
{
- if (plugin->sockv4 == NULL)
- return NULL;
- udp_a4 = (struct IPv4UdpAddress *) address->address;
- if (udp_a4->u4_port == 0)
- return NULL;
+ /* unfragmented message */
+ udpw = GNUNET_malloc (sizeof (struct UDP_MessageWrapper) + udpmlen);
+ udpw->session = s;
+ 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->start_time = GNUNET_TIME_absolute_get ();
+ udpw->timeout = GNUNET_TIME_relative_to_absolute (to);
+ udpw->transmission_time = s->last_transmit_time;
+ s->last_transmit_time
+ = GNUNET_TIME_absolute_add (s->last_transmit_time,
+ s->flow_delay_from_other_peer);
+ udpw->cont = cont;
+ udpw->cont_cls = cont_cls;
+ udpw->frag_ctx = NULL;
+ udpw->qc = &qc_message_sent;
+ udpw->qc_cls = plugin;
+ GNUNET_memcpy (udpw->msg_buf,
+ udp,
+ sizeof (struct UDPMessage));
+ GNUNET_memcpy (&udpw->msg_buf[sizeof(struct UDPMessage)],
+ msgbuf,
+ msgbuf_size);
+ enqueue (plugin,
+ udpw);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, unfragmented messages queued total",
+ 1,
+ GNUNET_NO);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, unfragmented bytes payload queued total",
+ msgbuf_size,
+ GNUNET_NO);
+ if (s->address->address_length == sizeof (struct IPv4UdpAddress))
+ schedule_select_v4 (plugin);
+ else
+ schedule_select_v6 (plugin);
}
-
- if (address->address_length == sizeof(struct IPv6UdpAddress))
+ else
{
- if (plugin->sockv6 == NULL)
- return NULL;
- udp_a6 = (struct IPv6UdpAddress *) address->address;
- if (udp_a6->u6_port == 0)
- return NULL;
- }
+ /* fragmented message */
+ if (NULL != s->frag_ctx)
+ return GNUNET_SYSERR;
+ GNUNET_memcpy (&udp[1],
+ msgbuf,
+ msgbuf_size);
+ frag_ctx = GNUNET_new (struct UDP_FragmentationContext);
+ frag_ctx->plugin = plugin;
+ frag_ctx->session = s;
+ frag_ctx->cont = cont;
+ frag_ctx->cont_cls = cont_cls;
+ frag_ctx->start_time = GNUNET_TIME_absolute_get ();
+ frag_ctx->next_frag_time = s->last_transmit_time;
+ frag_ctx->flow_delay_from_other_peer
+ = GNUNET_TIME_relative_divide (s->flow_delay_from_other_peer,
+ 1 + (msgbuf_size /
+ UDP_MTU));
+ frag_ctx->timeout = GNUNET_TIME_relative_to_absolute (to);
+ 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_msg_delay,
+ s->last_expected_ack_delay,
+ &udp->header,
+ &enqueue_fragment,
+ frag_ctx);
+ s->frag_ctx = frag_ctx;
+ s->last_transmit_time = frag_ctx->next_frag_time;
+ latency = GNUNET_TIME_absolute_get_remaining (s->last_transmit_time);
+ if (latency.rel_value_us > GNUNET_CONSTANTS_LATENCY_WARN.rel_value_us)
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "Enqueued fragments will take %s for transmission to %s (queue size: %u)\n",
+ GNUNET_STRINGS_relative_time_to_string (latency,
+ GNUNET_YES),
+ GNUNET_i2s (&s->target),
+ (unsigned int) s->msgs_in_queue);
+ else
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Enqueued fragments will take %s for transmission to %s (queue size: %u)\n",
+ GNUNET_STRINGS_relative_time_to_string (latency,
+ GNUNET_YES),
+ GNUNET_i2s (&s->target),
+ (unsigned int) s->msgs_in_queue);
- /* check if session already exists */
- cctx.address = address;
- cctx.res = NULL;
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Looking for existing session for peer `%s' `%s' \n",
- GNUNET_i2s (&address->peer),
- udp_address_to_string(NULL, address->address, address->address_length));
- GNUNET_CONTAINER_multipeermap_get_multiple (plugin->sessions, &address->peer,
- session_cmp_it, &cctx);
- if (cctx.res != NULL )
- {
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Found existing session %p\n",
- cctx.res);
- return cctx.res;
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, fragmented messages active",
+ 1,
+ GNUNET_NO);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, fragmented messages, total",
+ 1,
+ GNUNET_NO);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, fragmented bytes (payload)",
+ frag_ctx->payload_size,
+ GNUNET_NO);
}
- return NULL;
+ notify_session_monitor (s->plugin,
+ s,
+ GNUNET_TRANSPORT_SS_UPDATE);
+ return udpmlen;
}
+/* ********************** Receiving ********************** */
+
+
/**
- * Context to lookup a session based on a IP address
+ * Closure for #find_receive_context().
*/
-struct LookupContext
+struct FindReceiveContext
{
/**
- * The result
+ * Where to store the result.
*/
- struct Session *res;
+ struct DefragContext *rc;
/**
- * The socket address
+ * Session associated with this context.
*/
- const struct sockaddr *address;
+ struct GNUNET_ATS_Session *session;
/**
- * The socket address length
+ * Address to find.
*/
- size_t addr_len;
+ const union UdpAddress *udp_addr;
/**
- * Is a fragmentation context required for the session
+ * Number of bytes in @e udp_addr.
*/
- int must_have_frag_ctx;
+ size_t udp_addr_len;
+
};
/**
- * Find a session with a matching address.
- * FIXME: very similar code to #udp_plugin_lookup_session() above.
- * Unify?
+ * Scan the heap for a receive context with the given address.
*
- * @param cls the `struct LookupContext *`
- * @param key peer identity (unused)
- * @param value the `struct Session *`
- * @return #GNUNET_NO if we found the session, #GNUNET_OK if not
+ * @param cls the `struct FindReceiveContext`
+ * @param node internal node of the heap
+ * @param element value stored at the node (a `struct ReceiveContext`)
+ * @param cost cost associated with the node
+ * @return #GNUNET_YES if we should continue to iterate,
+ * #GNUNET_NO if not.
*/
static int
-lookup_session_by_sockaddr_it (void *cls,
- const struct GNUNET_PeerIdentity *key,
- void *value)
+find_receive_context (void *cls,
+ struct GNUNET_CONTAINER_HeapNode *node,
+ void *element,
+ GNUNET_CONTAINER_HeapCostType cost)
{
- struct LookupContext *l_ctx = cls;
- struct Session *s = value;
- struct IPv4UdpAddress u4;
- struct IPv6UdpAddress u6;
- void *arg;
- size_t args;
-
- /* convert address */
- switch (l_ctx->address->sa_family)
- {
- case AF_INET:
- GNUNET_assert(l_ctx->addr_len == sizeof(struct sockaddr_in));
- memset (&u4, 0, sizeof(u4));
- u6.options = htonl (0);
- u4.ipv4_addr = ((struct sockaddr_in *) l_ctx->address)->sin_addr.s_addr;
- u4.u4_port = ((struct sockaddr_in *) l_ctx->address)->sin_port;
- arg = &u4;
- args = sizeof(u4);
- break;
- case AF_INET6:
- GNUNET_assert(l_ctx->addr_len == sizeof(struct sockaddr_in6));
- memset (&u6, 0, sizeof(u6));
- u6.options = htonl (0);
- u6.ipv6_addr = ((struct sockaddr_in6 *) l_ctx->address)->sin6_addr;
- u6.u6_port = ((struct sockaddr_in6 *) l_ctx->address)->sin6_port;
- arg = &u6;
- args = sizeof(u6);
- break;
- default:
- GNUNET_break(0);
- return GNUNET_YES;
- }
- if ( (GNUNET_YES == l_ctx->must_have_frag_ctx) &&
- (NULL == s->frag_ctx))
- return GNUNET_YES;
+ struct FindReceiveContext *frc = cls;
+ struct DefragContext *e = element;
- /* Does not compare peer identities but addresses */
- if ((args == s->address->address_length) &&
- (0 == memcmp (arg, s->address->address, args)))
+ if ( (frc->udp_addr_len == e->udp_addr_len) &&
+ (0 == memcmp (frc->udp_addr,
+ e->udp_addr,
+ frc->udp_addr_len)) )
{
- l_ctx->res = s;
+ frc->rc = e;
return GNUNET_NO;
}
return GNUNET_YES;
}
-static struct Session *
-udp_plugin_create_session (void *cls,
- const struct GNUNET_HELLO_Address *address)
+/**
+ * Functions with this signature are called whenever we need to close
+ * a session due to a disconnect or failure to establish a connection.
+ *
+ * @param cls closure with the `struct Plugin`
+ * @param s session to close down
+ * @return #GNUNET_OK on success
+ */
+static int
+udp_disconnect_session (void *cls,
+ struct GNUNET_ATS_Session *s)
{
struct Plugin *plugin = cls;
- struct Session *s;
- struct IPv4UdpAddress *udp_v4;
- struct IPv6UdpAddress *udp_v6;
+ struct UDP_MessageWrapper *udpw;
+ struct UDP_MessageWrapper *next;
+ struct FindReceiveContext frc;
- s = create_session (plugin, address);
- if (sizeof (struct IPv4UdpAddress) == address->address_length)
+ GNUNET_assert (GNUNET_YES != s->in_destroy);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Session %p to peer `%s' at address %s ended\n",
+ s,
+ GNUNET_i2s (&s->target),
+ udp_address_to_string (plugin,
+ s->address->address,
+ s->address->address_length));
+ if (NULL != s->timeout_task)
{
- struct sockaddr_in v4;
- udp_v4 = (struct IPv4UdpAddress *) address->address;
- memset (&v4, '\0', sizeof (v4));
- v4.sin_family = AF_INET;
-#if HAVE_SOCKADDR_IN_SIN_LEN
- v4.sin_len = sizeof (struct sockaddr_in);
-#endif
- v4.sin_port = udp_v4->u4_port;
- v4.sin_addr.s_addr = udp_v4->ipv4_addr;
- s->ats = plugin->env->get_address_type (plugin->env->cls,
- (const struct sockaddr *) &v4,
- sizeof (v4));
+ GNUNET_SCHEDULER_cancel (s->timeout_task);
+ s->timeout_task = NULL;
}
- else if (sizeof (struct IPv6UdpAddress) == address->address_length)
+ if (NULL != s->frag_ctx)
{
- struct sockaddr_in6 v6;
- udp_v6 = (struct IPv6UdpAddress *) address->address;
- memset (&v6, '\0', sizeof (v6));
- v6.sin6_family = AF_INET6;
-#if HAVE_SOCKADDR_IN_SIN_LEN
- v6.sin6_len = sizeof (struct sockaddr_in6);
-#endif
- v6.sin6_port = udp_v6->u6_port;
- v6.sin6_addr = udp_v6->ipv6_addr;
- s->ats = plugin->env->get_address_type (plugin->env->cls,
- (const struct sockaddr *) &v6, sizeof (v6));
+ /* Remove fragmented message due to disconnect */
+ fragmented_message_done (s->frag_ctx,
+ GNUNET_SYSERR);
}
+ GNUNET_assert (GNUNET_YES ==
+ GNUNET_CONTAINER_multipeermap_remove (plugin->sessions,
+ &s->target,
+ s));
+ frc.rc = NULL;
+ frc.udp_addr = s->address->address;
+ frc.udp_addr_len = s->address->address_length;
+ /* Lookup existing receive context for this address */
+ if (NULL != plugin->defrag_ctxs)
+ {
+ GNUNET_CONTAINER_heap_iterate (plugin->defrag_ctxs,
+ &find_receive_context,
+ &frc);
+ if (NULL != frc.rc)
+ {
+ struct DefragContext *d_ctx = frc.rc;
- if (NULL == s)
- return NULL; /* protocol not supported or address invalid */
- LOG(GNUNET_ERROR_TYPE_DEBUG,
- "Creating new %s session %p for peer `%s' address `%s'\n",
- GNUNET_HELLO_address_check_option (address, GNUNET_HELLO_ADDRESS_INFO_INBOUND) ? "inbound" : "outbound",
- s, GNUNET_i2s (&address->peer),
- udp_address_to_string( NULL,address->address,address->address_length));
- GNUNET_assert(
- GNUNET_OK == GNUNET_CONTAINER_multipeermap_put (plugin->sessions, &s->target, s, GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE));
- GNUNET_STATISTICS_set (plugin->env->stats, "# UDP sessions active",
- GNUNET_CONTAINER_multipeermap_size (plugin->sessions), GNUNET_NO);
- return s;
-}
-
-
-/**
- * Function that will be called whenever the transport service wants to
- * notify the plugin that a session is still active and in use and
- * therefore the session timeout for this session has to be updated
- *
- * @param cls closure
- * @param peer which peer was the session for
- * @param session which session is being updated
- */
-static void
-udp_plugin_update_session_timeout (void *cls,
- const struct GNUNET_PeerIdentity *peer,
- struct Session *session)
-{
- struct Plugin *plugin = cls;
-
- if (GNUNET_YES !=
- GNUNET_CONTAINER_multipeermap_contains_value (plugin->sessions,
- peer,
- session))
+ GNUNET_CONTAINER_heap_remove_node (d_ctx->hnode);
+ GNUNET_DEFRAGMENT_context_destroy (d_ctx->defrag);
+ GNUNET_free (d_ctx);
+ }
+ }
+ s->in_destroy = GNUNET_YES;
+ next = plugin->ipv4_queue_head;
+ while (NULL != (udpw = next))
{
- GNUNET_break(0);
- return;
+ next = udpw->next;
+ if (udpw->session == s)
+ {
+ dequeue (plugin,
+ udpw);
+ udpw->qc (udpw->qc_cls,
+ udpw,
+ GNUNET_SYSERR);
+ GNUNET_free (udpw);
+ }
+ }
+ next = plugin->ipv6_queue_head;
+ while (NULL != (udpw = next))
+ {
+ next = udpw->next;
+ if (udpw->session == s)
+ {
+ dequeue (plugin,
+ udpw);
+ udpw->qc (udpw->qc_cls,
+ udpw,
+ GNUNET_SYSERR);
+ GNUNET_free (udpw);
+ }
}
- /* Reschedule session timeout */
- reschedule_session_timeout (session);
-}
-
-
-/**
- * Creates a new outbound session the transport service will use to send data to the
- * peer
- *
- * @param cls the plugin
- * @param address the address
- * @return the session or NULL of max connections exceeded
- */
-static struct Session *
-udp_plugin_get_session (void *cls,
- const struct GNUNET_HELLO_Address *address)
-{
- struct Session *s;
-
- if (NULL == address)
+ if ( (NULL != s->frag_ctx) &&
+ (NULL != s->frag_ctx->cont) )
{
- GNUNET_break(0);
- return NULL;
+ /* The 'frag_ctx' itself will be freed in #free_session() a bit
+ later, as it might be in use right now */
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Calling continuation for fragemented message to `%s' with result SYSERR\n",
+ GNUNET_i2s (&s->target));
+ s->frag_ctx->cont (s->frag_ctx->cont_cls,
+ &s->target,
+ GNUNET_SYSERR,
+ s->frag_ctx->payload_size,
+ s->frag_ctx->on_wire_size);
}
- if ( (address->address_length != sizeof(struct IPv4UdpAddress)) &&
- (address->address_length != sizeof(struct IPv6UdpAddress)) )
- return NULL;
-
- /* otherwise create new */
- if (NULL != (s = udp_plugin_lookup_session (cls, address)))
- return s;
- return udp_plugin_create_session (cls, address);
+ notify_session_monitor (s->plugin,
+ s,
+ GNUNET_TRANSPORT_SS_DONE);
+ plugin->env->session_end (plugin->env->cls,
+ s->address,
+ s);
+ GNUNET_STATISTICS_set (plugin->env->stats,
+ "# UDP sessions active",
+ GNUNET_CONTAINER_multipeermap_size (plugin->sessions),
+ GNUNET_NO);
+ if (0 == s->rc)
+ free_session (s);
+ return GNUNET_OK;
}
/**
- * Enqueue a message for transmission.
+ * Handle a #GNUNET_MESSAGE_TYPE_TRANSPORT_UDP_ACK message.
*
* @param plugin the UDP plugin
- * @param udpw message wrapper to queue
+ * @param msg the (presumed) UDP ACK message
+ * @param udp_addr sender address
+ * @param udp_addr_len number of bytes in @a udp_addr
*/
static void
-enqueue (struct Plugin *plugin,
- struct UDP_MessageWrapper *udpw)
+read_process_ack (struct Plugin *plugin,
+ const struct GNUNET_MessageHeader *msg,
+ const union UdpAddress *udp_addr,
+ socklen_t udp_addr_len)
{
- struct Session *session = udpw->session;
+ const struct GNUNET_MessageHeader *ack;
+ const struct UDP_ACK_Message *udp_ack;
+ struct GNUNET_HELLO_Address *address;
+ struct GNUNET_ATS_Session *s;
+ struct GNUNET_TIME_Relative flow_delay;
- if (plugin->bytes_in_buffer + udpw->msg_size > INT64_MAX)
+ /* check message format */
+ if (ntohs (msg->size)
+ < sizeof(struct UDP_ACK_Message) + sizeof(struct GNUNET_MessageHeader))
{
- GNUNET_break (0);
+ GNUNET_break_op (0);
+ return;
}
- else
+ udp_ack = (const struct UDP_ACK_Message *) msg;
+ ack = (const struct GNUNET_MessageHeader *) &udp_ack[1];
+ if (ntohs (ack->size) != ntohs (msg->size) - sizeof(struct UDP_ACK_Message))
{
- GNUNET_STATISTICS_update (plugin->env->stats,
- "# UDP, total, bytes in buffers", udpw->msg_size, GNUNET_NO);
- plugin->bytes_in_buffer += udpw->msg_size;
+ GNUNET_break_op(0);
+ return;
}
- GNUNET_STATISTICS_update (plugin->env->stats,
- "# UDP, total, msgs in buffers",
- 1, GNUNET_NO);
- if (udpw->session->address->address_length == sizeof (struct IPv4UdpAddress))
- GNUNET_CONTAINER_DLL_insert(plugin->ipv4_queue_head,
- plugin->ipv4_queue_tail,
- udpw);
- else if (udpw->session->address->address_length == sizeof (struct IPv6UdpAddress))
- GNUNET_CONTAINER_DLL_insert (plugin->ipv6_queue_head,
- plugin->ipv6_queue_tail,
- udpw);
+
+ /* Locate session */
+ address = GNUNET_HELLO_address_allocate (&udp_ack->sender,
+ PLUGIN_NAME,
+ udp_addr,
+ udp_addr_len,
+ GNUNET_HELLO_ADDRESS_INFO_NONE);
+ s = udp_plugin_lookup_session (plugin,
+ address);
+ if (NULL == s)
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "UDP session of address %s for ACK not found\n",
+ udp_address_to_string (plugin,
+ address->address,
+ address->address_length));
+ GNUNET_HELLO_address_free (address);
+ return;
+ }
+ if (NULL == s->frag_ctx)
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
+ "Fragmentation context of address %s for ACK (%s) not found\n",
+ udp_address_to_string (plugin,
+ address->address,
+ address->address_length),
+ GNUNET_FRAGMENT_print_ack (ack));
+ GNUNET_HELLO_address_free (address);
+ return;
+ }
+ GNUNET_HELLO_address_free (address);
+
+ /* evaluate flow delay: how long should we wait between messages? */
+ if (UINT32_MAX == ntohl (udp_ack->delay))
+ {
+ /* Other peer asked for us to terminate the session */
+ LOG (GNUNET_ERROR_TYPE_INFO,
+ "Asked to disconnect UDP session of %s\n",
+ GNUNET_i2s (&udp_ack->sender));
+ udp_disconnect_session (plugin,
+ s);
+ return;
+ }
+ flow_delay.rel_value_us = (uint64_t) ntohl (udp_ack->delay);
+ if (flow_delay.rel_value_us > GNUNET_CONSTANTS_LATENCY_WARN.rel_value_us)
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "We received a sending delay of %s for %s\n",
+ GNUNET_STRINGS_relative_time_to_string (flow_delay,
+ GNUNET_YES),
+ GNUNET_i2s (&udp_ack->sender));
else
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "We received a sending delay of %s for %s\n",
+ GNUNET_STRINGS_relative_time_to_string (flow_delay,
+ GNUNET_YES),
+ GNUNET_i2s (&udp_ack->sender));
+ /* Flow delay is for the reassembled packet, however, our delay
+ is per packet, so we need to adjust: */
+ s->flow_delay_from_other_peer = flow_delay;
+
+ /* Handle ACK */
+ if (GNUNET_OK !=
+ GNUNET_FRAGMENT_process_ack (s->frag_ctx->frag,
+ ack))
{
- GNUNET_break (0);
+ 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),
+ udp_address_to_string (plugin,
+ udp_addr,
+ udp_addr_len));
+ /* Expect more ACKs to arrive */
return;
}
- session->msgs_in_queue++;
- session->bytes_in_queue += udpw->msg_size;
+
+ /* Remove fragmented message after successful sending */
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Message from %s at %s full ACK'ed\n",
+ GNUNET_i2s (&udp_ack->sender),
+ udp_address_to_string (plugin,
+ udp_addr,
+ udp_addr_len));
+ fragmented_message_done (s->frag_ctx,
+ GNUNET_OK);
}
/**
- * Fragment message was transmitted via UDP, let fragmentation know
- * to send the next fragment now.
+ * Message tokenizer has broken up an incomming message. Pass it on
+ * to the service.
*
- * @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
+ * @param cls the `struct GNUNET_ATS_Session *`
+ * @param hdr the actual message
+ * @return #GNUNET_OK (always)
*/
-static void
-send_next_fragment (void *cls,
- const struct GNUNET_PeerIdentity *target,
- int result,
- size_t payload,
- size_t physical)
+static int
+process_inbound_tokenized_messages (void *cls,
+ const struct GNUNET_MessageHeader *hdr)
{
- struct UDP_MessageWrapper *udpw = cls;
+ struct GNUNET_ATS_Session *session = cls;
+ struct Plugin *plugin = session->plugin;
- GNUNET_FRAGMENT_context_transmission_done (udpw->frag_ctx->frag);
+ if (GNUNET_YES == session->in_destroy)
+ return GNUNET_OK;
+ reschedule_session_timeout (session);
+ session->flow_delay_for_other_peer
+ = plugin->env->receive (plugin->env->cls,
+ session->address,
+ session,
+ hdr);
+ return GNUNET_OK;
}
/**
- * Function that is called with messages created by the fragmentation
- * module. In the case of the 'proc' callback of the
- * #GNUNET_FRAGMENT_context_create() function, this function must
- * eventually call #GNUNET_FRAGMENT_context_transmission_done().
+ * Destroy a session, plugin is being unloaded.
*
- * @param cls closure, the 'struct FragmentationContext'
- * @param msg the message that was created
+ * @param cls the `struct Plugin`
+ * @param key hash of public key of target peer
+ * @param value a `struct PeerSession *` to clean up
+ * @return #GNUNET_OK (continue to iterate)
*/
-static void
-enqueue_fragment (void *cls,
- const struct GNUNET_MessageHeader *msg)
+static int
+disconnect_and_free_it (void *cls,
+ const struct GNUNET_PeerIdentity *key,
+ void *value)
{
- struct UDP_FragmentationContext *frag_ctx = cls;
- struct Plugin *plugin = frag_ctx->plugin;
- struct UDP_MessageWrapper * udpw;
- size_t msg_len = ntohs (msg->size);
+ struct Plugin *plugin = cls;
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "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;
- 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;
- udpw->msg_type = UMT_MSG_FRAGMENTED;
- memcpy (udpw->msg_buf, msg, msg_len);
- enqueue (plugin, udpw);
- schedule_select (plugin);
+ udp_disconnect_session (plugin,
+ value);
+ return GNUNET_OK;
}
/**
- * Function that can be used by the transport service to transmit
- * a message using the plugin. Note that in the case of a
- * peer disconnecting, the continuation MUST be called
- * prior to the disconnect notification itself. This function
- * will be called with this peer's HELLO message to initiate
- * a fresh connection to another peer.
+ * Disconnect from a remote node. Clean up session if we have one for
+ * this peer.
*
- * @param cls closure
- * @param s which session must be used
- * @param msgbuf the message to transmit
- * @param msgbuf_size number of bytes in 'msgbuf'
- * @param priority how important is the message (most plugins will
- * ignore message priority and just FIFO)
- * @param to how long to wait at most for the transmission (does not
- * require plugins to discard the message after the timeout,
- * just advisory for the desired delay; most plugins will ignore
- * this as well)
- * @param cont continuation to call once the message has
- * been transmitted (or if the transport is ready
- * for the next transmission call; or if the
- * peer disconnected...); can be NULL
- * @param cont_cls closure for cont
- * @return number of bytes used (on the physical network, with overheads);
- * -1 on hard errors (i.e. address invalid); 0 is a legal value
- * and does NOT mean that the message was not transmitted (DV)
+ * @param cls closure for this call (should be handle to Plugin)
+ * @param target the peeridentity of the peer to disconnect
+ * @return #GNUNET_OK on success, #GNUNET_SYSERR if the operation failed
*/
-static ssize_t
-udp_plugin_send (void *cls,
- struct Session *s,
- const char *msgbuf,
- size_t msgbuf_size,
- unsigned int priority,
- struct GNUNET_TIME_Relative to,
- GNUNET_TRANSPORT_TransmitContinuation cont,
- void *cont_cls)
+static void
+udp_disconnect (void *cls,
+ const struct GNUNET_PeerIdentity *target)
{
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_assert(plugin != NULL);
- GNUNET_assert(s != NULL);
- if ( (s->address->address_length == sizeof(struct IPv6UdpAddress)) &&
- (plugin->sockv6 == NULL) )
- return GNUNET_SYSERR;
- if ( (s->address->address_length == sizeof(struct IPv4UdpAddress)) &&
- (plugin->sockv4 == NULL) )
- return GNUNET_SYSERR;
- if (udpmlen >= GNUNET_SERVER_MAX_MESSAGE_SIZE)
- {
- GNUNET_break(0);
- return GNUNET_SYSERR;
- }
- if (GNUNET_YES !=
- GNUNET_CONTAINER_multipeermap_contains_value (plugin->sessions,
- &s->target,
- s))
- {
- GNUNET_break(0);
- return GNUNET_SYSERR;
- }
LOG (GNUNET_ERROR_TYPE_DEBUG,
- "UDP transmits %u-byte message to `%s' using address `%s'\n",
- udpmlen,
- GNUNET_i2s (&s->target),
- udp_address_to_string (NULL,
- s->address->address,
- s->address->address_length));
+ "Disconnecting from peer `%s'\n",
+ GNUNET_i2s (target));
+ GNUNET_CONTAINER_multipeermap_get_multiple (plugin->sessions,
+ target,
+ &disconnect_and_free_it,
+ plugin);
+}
- /* Message */
- udp = (struct UDPMessage *) mbuf;
- 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;
- /* We do not update the session time out here!
- * Otherwise this session will not timeout since we send keep alive before
- * session can timeout
- *
- * For UDP we update session timeout only on receive, this will cover keep
- * alives, since remote peer will reply with keep alive response!
- */
- if (udpmlen <= UDP_MTU)
- {
- /* unfragmented message */
- udpw = GNUNET_malloc (sizeof (struct UDP_MessageWrapper) + udpmlen);
- udpw->session = s;
- 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;
- udpw->msg_type = UMT_MSG_UNFRAGMENTED;
- memcpy (udpw->msg_buf, udp, sizeof(struct UDPMessage));
- memcpy (&udpw->msg_buf[sizeof(struct UDPMessage)], msgbuf, msgbuf_size);
- enqueue (plugin, udpw);
+/**
+ * Session was idle, so disconnect it.
+ *
+ * @param cls the `struct GNUNET_ATS_Session` to time out
+ */
+static void
+session_timeout (void *cls)
+{
+ struct GNUNET_ATS_Session *s = cls;
+ struct Plugin *plugin = s->plugin;
+ struct GNUNET_TIME_Relative left;
- 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
- {
- /* fragmented message */
- if (s->frag_ctx != NULL)
- return GNUNET_SYSERR;
- memcpy (&udp[1], msgbuf, msgbuf_size);
- frag_ctx = GNUNET_new (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; /* bytes with UDP and fragmentation overhead */
- frag_ctx->frag = GNUNET_FRAGMENT_context_create (plugin->env->stats,
- 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;
- 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);
+ s->timeout_task = NULL;
+ left = GNUNET_TIME_absolute_get_remaining (s->timeout);
+ if (left.rel_value_us > 0)
+ {
+ /* not actually our turn yet, but let's at least update
+ the monitor, it may think we're about to die ... */
+ notify_session_monitor (s->plugin,
+ s,
+ GNUNET_TRANSPORT_SS_UPDATE);
+ s->timeout_task = GNUNET_SCHEDULER_add_delayed (left,
+ &session_timeout,
+ s);
+ return;
}
- notify_session_monitor (s->plugin,
- s,
- GNUNET_TRANSPORT_SS_UPDATE);
- schedule_select (plugin);
- return udpmlen;
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Session %p was idle for %s, disconnecting\n",
+ s,
+ GNUNET_STRINGS_relative_time_to_string (UDP_SESSION_TIME_OUT,
+ GNUNET_YES));
+ /* call session destroy function */
+ udp_disconnect_session (plugin,
+ s);
}
/**
- * Our external IP address/port mapping has changed.
+ * Allocate a new session for the given endpoint address.
+ * Note that this function does not inform the service
+ * of the new session, this is the responsibility of the
+ * caller (if needed).
*
- * @param cls closure, the `struct LocalAddrList`
- * @param add_remove #GNUNET_YES to mean the new public IP address, #GNUNET_NO to mean
- * the previous (now invalid) one
- * @param addr either the previous or the new public IP address
- * @param addrlen actual lenght of the address
+ * @param cls the `struct Plugin`
+ * @param address address of the other peer to use
+ * @param network_type network type the address belongs to
+ * @return NULL on error, otherwise session handle
*/
-static void
-udp_nat_port_map_callback (void *cls,
- int add_remove,
- const struct sockaddr *addr,
- socklen_t addrlen)
+static struct GNUNET_ATS_Session *
+udp_plugin_create_session (void *cls,
+ const struct GNUNET_HELLO_Address *address,
+ enum GNUNET_NetworkType network_type)
{
struct Plugin *plugin = cls;
- struct GNUNET_HELLO_Address *address;
- struct IPv4UdpAddress u4;
- struct IPv6UdpAddress u6;
- void *arg;
- size_t args;
+ struct GNUNET_ATS_Session *s;
- LOG (GNUNET_ERROR_TYPE_INFO,
- "NAT notification to %s address `%s'\n",
- (GNUNET_YES == add_remove) ? "add" : "remove",
- GNUNET_a2s (addr, addrlen));
+ s = GNUNET_new (struct GNUNET_ATS_Session);
+ s->mst = GNUNET_MST_create (&process_inbound_tokenized_messages,
+ s);
+ s->plugin = plugin;
+ s->address = GNUNET_HELLO_address_copy (address);
+ s->target = address->peer;
+ s->last_transmit_time = GNUNET_TIME_absolute_get ();
+ 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;
+ s->flow_delay_for_other_peer = GNUNET_TIME_UNIT_ZERO;
+ s->timeout = GNUNET_TIME_relative_to_absolute (UDP_SESSION_TIME_OUT);
+ s->timeout_task = GNUNET_SCHEDULER_add_delayed (UDP_SESSION_TIME_OUT,
+ &session_timeout,
+ s);
+ s->scope = network_type;
- /* convert 'address' to our internal format */
- switch (addr->sa_family)
- {
- case AF_INET:
- GNUNET_assert(addrlen == sizeof(struct sockaddr_in));
- memset (&u4, 0, sizeof(u4));
- u4.options = htonl (plugin->myoptions);
- u4.ipv4_addr = ((struct sockaddr_in *) addr)->sin_addr.s_addr;
- u4.u4_port = ((struct sockaddr_in *) addr)->sin_port;
- if (0 == ((struct sockaddr_in *) addr)->sin_port)
- return;
- arg = &u4;
- args = sizeof(struct IPv4UdpAddress);
- break;
- case AF_INET6:
- GNUNET_assert(addrlen == sizeof(struct sockaddr_in6));
- memset (&u6, 0, sizeof(u6));
- u6.options = htonl (plugin->myoptions);
- if (0 == ((struct sockaddr_in6 *) addr)->sin6_port)
- return;
- memcpy (&u6.ipv6_addr, &((struct sockaddr_in6 *) addr)->sin6_addr,
- sizeof(struct in6_addr));
- u6.u6_port = ((struct sockaddr_in6 *) addr)->sin6_port;
- arg = &u6;
- args = sizeof(struct IPv6UdpAddress);
- break;
- default:
- GNUNET_break(0);
- return;
- }
- /* modify our published address list */
- address = GNUNET_HELLO_address_allocate (plugin->env->my_identity,
- PLUGIN_NAME,
- arg, args,
- GNUNET_HELLO_ADDRESS_INFO_NONE);
- plugin->env->notify_address (plugin->env->cls, add_remove, address);
- GNUNET_HELLO_address_free (address);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Creating new session %p for peer `%s' address `%s'\n",
+ s,
+ GNUNET_i2s (&address->peer),
+ udp_address_to_string (plugin,
+ address->address,
+ address->address_length));
+ GNUNET_assert (GNUNET_OK ==
+ GNUNET_CONTAINER_multipeermap_put (plugin->sessions,
+ &s->target,
+ s,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE));
+ GNUNET_STATISTICS_set (plugin->env->stats,
+ "# UDP sessions active",
+ GNUNET_CONTAINER_multipeermap_size (plugin->sessions),
+ GNUNET_NO);
+ notify_session_monitor (plugin,
+ s,
+ GNUNET_TRANSPORT_SS_INIT);
+ return s;
}
/**
- * Message tokenizer has broken up an incomming message. Pass it on
- * to the service.
+ * Creates a new outbound session the transport service will use to
+ * send data to the peer.
*
* @param cls the `struct Plugin *`
- * @param client the `struct SourceInformation *`
- * @param hdr the actual message
- * @return #GNUNET_OK (always)
+ * @param address the address
+ * @return the session or NULL of max connections exceeded
*/
-static int
-process_inbound_tokenized_messages (void *cls,
- void *client,
- const struct GNUNET_MessageHeader *hdr)
+static struct GNUNET_ATS_Session *
+udp_plugin_get_session (void *cls,
+ const struct GNUNET_HELLO_Address *address)
{
struct Plugin *plugin = cls;
- struct SourceInformation *si = client;
- struct GNUNET_TIME_Relative delay;
+ struct GNUNET_ATS_Session *s;
+ enum GNUNET_NetworkType network_type = GNUNET_NT_UNSPECIFIED;
+ const struct IPv4UdpAddress *udp_v4;
+ const struct IPv6UdpAddress *udp_v6;
- GNUNET_assert(si->session != NULL);
- if (GNUNET_YES == si->session->in_destroy)
- return GNUNET_OK;
- /* setup ATS */
- GNUNET_break (ntohl (si->session->ats.value) != GNUNET_ATS_NET_UNSPECIFIED);
- reschedule_session_timeout (si->session);
- delay = plugin->env->receive (plugin->env->cls,
- si->session->address,
- si->session,
- hdr);
- plugin->env->update_address_metrics (plugin->env->cls,
- si->session->address,
- si->session,
- &si->session->ats, 1);
- si->session->flow_delay_for_other_peer = delay;
- return GNUNET_OK;
+ if (NULL == address)
+ {
+ GNUNET_break (0);
+ return NULL;
+ }
+ if ( (address->address_length != sizeof(struct IPv4UdpAddress)) &&
+ (address->address_length != sizeof(struct IPv6UdpAddress)) )
+ {
+ GNUNET_break_op (0);
+ return NULL;
+ }
+ if (NULL != (s = udp_plugin_lookup_session (cls,
+ address)))
+ return s;
+
+ /* need to create new session */
+ if (sizeof (struct IPv4UdpAddress) == address->address_length)
+ {
+ struct sockaddr_in v4;
+
+ udp_v4 = (const struct IPv4UdpAddress *) address->address;
+ memset (&v4, '\0', sizeof (v4));
+ v4.sin_family = AF_INET;
+#if HAVE_SOCKADDR_IN_SIN_LEN
+ v4.sin_len = sizeof (struct sockaddr_in);
+#endif
+ v4.sin_port = udp_v4->u4_port;
+ v4.sin_addr.s_addr = udp_v4->ipv4_addr;
+ network_type = plugin->env->get_address_type (plugin->env->cls,
+ (const struct sockaddr *) &v4,
+ sizeof (v4));
+ }
+ if (sizeof (struct IPv6UdpAddress) == address->address_length)
+ {
+ struct sockaddr_in6 v6;
+
+ udp_v6 = (const struct IPv6UdpAddress *) address->address;
+ memset (&v6, '\0', sizeof (v6));
+ v6.sin6_family = AF_INET6;
+#if HAVE_SOCKADDR_IN_SIN_LEN
+ v6.sin6_len = sizeof (struct sockaddr_in6);
+#endif
+ v6.sin6_port = udp_v6->u6_port;
+ v6.sin6_addr = udp_v6->ipv6_addr;
+ network_type = plugin->env->get_address_type (plugin->env->cls,
+ (const struct sockaddr *) &v6,
+ sizeof (v6));
+ }
+ GNUNET_break (GNUNET_NT_UNSPECIFIED != network_type);
+ return udp_plugin_create_session (cls,
+ address,
+ network_type);
}
*
* @param plugin plugin context
* @param msg the message
- * @param sender_addr sender address
- * @param sender_addr_len number of bytes in @a sender_addr
+ * @param udp_addr sender address
+ * @param udp_addr_len number of bytes in @a udp_addr
+ * @param network_type network type the address belongs to
*/
static void
process_udp_message (struct Plugin *plugin,
const struct UDPMessage *msg,
- const struct sockaddr *sender_addr,
- socklen_t sender_addr_len)
+ const union UdpAddress *udp_addr,
+ size_t udp_addr_len,
+ enum GNUNET_NetworkType network_type)
{
- struct SourceInformation si;
- struct Session * s;
+ struct GNUNET_ATS_Session *s;
struct GNUNET_HELLO_Address *address;
- struct IPv4UdpAddress u4;
- struct IPv6UdpAddress u6;
- const void *arg;
- size_t args;
+ GNUNET_break (GNUNET_NT_UNSPECIFIED != network_type);
if (0 != ntohl (msg->reserved))
{
GNUNET_break_op(0);
return;
}
- /* convert address */
- switch (sender_addr->sa_family)
- {
- case AF_INET:
- GNUNET_assert(sender_addr_len == sizeof(struct sockaddr_in));
- memset (&u4, 0, sizeof(u4));
- u6.options = htonl (0);
- u4.ipv4_addr = ((struct sockaddr_in *) sender_addr)->sin_addr.s_addr;
- u4.u4_port = ((struct sockaddr_in *) sender_addr)->sin_port;
- arg = &u4;
- args = sizeof(u4);
- break;
- case AF_INET6:
- GNUNET_assert(sender_addr_len == sizeof(struct sockaddr_in6));
- memset (&u6, 0, sizeof(u6));
- u6.options = htonl (0);
- u6.ipv6_addr = ((struct sockaddr_in6 *) sender_addr)->sin6_addr;
- u6.u6_port = ((struct sockaddr_in6 *) sender_addr)->sin6_port;
- arg = &u6;
- args = sizeof(u6);
- break;
- default:
- GNUNET_break(0);
- return;
- }
- LOG(GNUNET_ERROR_TYPE_DEBUG,
- "Received message with %u bytes from peer `%s' at `%s'\n",
- (unsigned int ) ntohs (msg->header.size), GNUNET_i2s (&msg->sender),
- GNUNET_a2s (sender_addr, sender_addr_len));
-
- address = GNUNET_HELLO_address_allocate ( &msg->sender, PLUGIN_NAME,
- arg, args,
- GNUNET_HELLO_ADDRESS_INFO_INBOUND);
- if (NULL == (s = udp_plugin_lookup_session (plugin, address)))
+ address = GNUNET_HELLO_address_allocate (&msg->sender,
+ PLUGIN_NAME,
+ udp_addr,
+ udp_addr_len,
+ GNUNET_HELLO_ADDRESS_INFO_NONE);
+ if (NULL ==
+ (s = udp_plugin_lookup_session (plugin,
+ address)))
{
- s = udp_plugin_create_session (plugin, address);
- plugin->env->session_start (NULL, address, s, NULL, 0);
- notify_session_monitor (s->plugin,
- s,
- GNUNET_TRANSPORT_SS_INIT);
- notify_session_monitor (s->plugin,
+ s = udp_plugin_create_session (plugin,
+ address,
+ network_type);
+ plugin->env->session_start (plugin->env->cls,
+ address,
+ s,
+ s->scope);
+ notify_session_monitor (plugin,
s,
GNUNET_TRANSPORT_SS_UP);
}
GNUNET_free (address);
- /* iterate over all embedded messages */
- si.session = s;
- si.sender = msg->sender;
- si.arg = arg;
- si.args = args;
s->rc++;
- GNUNET_SERVER_mst_receive (plugin->mst, &si, (const char *) &msg[1],
- ntohs (msg->header.size) - sizeof(struct UDPMessage), GNUNET_YES,
- GNUNET_NO);
+ GNUNET_MST_from_buffer (s->mst,
+ (const char *) &msg[1],
+ ntohs (msg->header.size) - sizeof(struct UDPMessage),
+ GNUNET_YES,
+ GNUNET_NO);
s->rc--;
- if ((0 == s->rc) && (GNUNET_YES == s->in_destroy))
+ if ( (0 == s->rc) &&
+ (GNUNET_YES == s->in_destroy) )
free_session (s);
}
fragment_msg_proc (void *cls,
const struct GNUNET_MessageHeader *msg)
{
- struct DefragContext *rc = cls;
+ struct DefragContext *dc = cls;
+ const struct UDPMessage *um;
if (ntohs (msg->type) != GNUNET_MESSAGE_TYPE_TRANSPORT_UDP_MESSAGE)
{
- GNUNET_break(0);
+ GNUNET_break_op (0);
return;
}
if (ntohs (msg->size) < sizeof(struct UDPMessage))
{
- GNUNET_break(0);
+ GNUNET_break_op (0);
return;
}
- process_udp_message (rc->plugin,
- (const struct UDPMessage *) msg,
- rc->src_addr,
- rc->addr_len);
+ um = (const struct UDPMessage *) msg;
+ dc->sender = um->sender;
+ dc->have_sender = GNUNET_YES;
+ process_udp_message (dc->plugin,
+ um,
+ dc->udp_addr,
+ dc->udp_addr_len,
+ dc->network_type);
}
/**
- * Transmit an acknowledgement.
+ * We finished sending an acknowledgement. Update
+ * statistics.
*
- * @param cls the `struct DefragContext *`
- * @param id message ID (unused)
- * @param msg ack to transmit
+ * @param cls the `struct Plugin`
+ * @param udpw message queue entry of the ACK
+ * @param result #GNUNET_OK if the transmission worked,
+ * #GNUNET_SYSERR if we failed to send the ACK
*/
static void
-ack_proc (void *cls,
- uint32_t id,
- const struct GNUNET_MessageHeader *msg)
+ack_message_sent (void *cls,
+ struct UDP_MessageWrapper *udpw,
+ int result)
{
- struct DefragContext *rc = cls;
- size_t msize = sizeof(struct UDP_ACK_Message) + ntohs (msg->size);
- struct UDP_ACK_Message *udp_ack;
- uint32_t delay = 0;
- struct UDP_MessageWrapper *udpw;
- struct Session *s;
- struct LookupContext l_ctx;
-
- l_ctx.address = rc->src_addr;
- l_ctx.addr_len = rc->addr_len;
- l_ctx.must_have_frag_ctx = GNUNET_NO;
- l_ctx.res = NULL;
- GNUNET_CONTAINER_multipeermap_iterate (rc->plugin->sessions,
- &lookup_session_by_sockaddr_it,
- &l_ctx);
- s = l_ctx.res;
- if (NULL == s)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- "Trying to transmit ACK to peer `%s' but not session found!\n",
- GNUNET_a2s(rc->src_addr, rc->addr_len));
-
- GNUNET_CONTAINER_heap_remove_node (rc->hnode);
- GNUNET_DEFRAGMENT_context_destroy (rc->defrag);
- GNUNET_free (rc);
+ struct Plugin *plugin = cls;
- return;
+ if (GNUNET_OK == result)
+ {
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, ACK messages sent",
+ 1,
+ GNUNET_NO);
}
- if (s->flow_delay_for_other_peer.rel_value_us <= UINT32_MAX)
- delay = s->flow_delay_for_other_peer.rel_value_us;
-
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Sending ACK to `%s' including delay of %s\n",
- GNUNET_a2s (rc->src_addr, (rc->src_addr->sa_family == AF_INET) ? sizeof (struct sockaddr_in) : sizeof (struct sockaddr_in6)),
- GNUNET_STRINGS_relative_time_to_string (s->flow_delay_for_other_peer,
- GNUNET_YES));
- 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];
- udpw->msg_type = UMT_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);
- notify_session_monitor (s->plugin,
- s,
- GNUNET_TRANSPORT_SS_UPDATE);
- schedule_select (rc->plugin);
-}
-
-
-/**
- * FIXME.
- */
-static void
-read_process_msg (struct Plugin *plugin,
- const struct GNUNET_MessageHeader *msg,
- const struct sockaddr *addr,
- socklen_t fromlen)
-{
- if (ntohs (msg->size) < sizeof(struct UDPMessage))
+ else
{
- GNUNET_break_op(0);
- return;
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, ACK transmissions failed",
+ 1,
+ GNUNET_NO);
}
- process_udp_message (plugin,
- (const struct UDPMessage *) msg,
- addr,
- fromlen);
}
/**
- * FIXME.
+ * Transmit an acknowledgement.
+ *
+ * @param cls the `struct DefragContext *`
+ * @param id message ID (unused)
+ * @param msg ack to transmit
*/
static void
-read_process_ack (struct Plugin *plugin,
- const struct GNUNET_MessageHeader *msg,
- const struct sockaddr *addr,
- socklen_t fromlen)
+ack_proc (void *cls,
+ uint32_t id,
+ const struct GNUNET_MessageHeader *msg)
{
- const struct GNUNET_MessageHeader *ack;
- const struct UDP_ACK_Message *udp_ack;
- struct LookupContext l_ctx;
- struct Session *s;
- struct GNUNET_TIME_Relative flow_delay;
-
- if (ntohs (msg->size)
- < sizeof(struct UDP_ACK_Message) + sizeof(struct GNUNET_MessageHeader))
- {
- GNUNET_break_op(0);
- return;
- }
- udp_ack = (const struct UDP_ACK_Message *) msg;
-
- /* Lookup session based on sockaddr */
- l_ctx.address = addr;
- l_ctx.addr_len = fromlen;
- l_ctx.res = NULL;
- l_ctx.must_have_frag_ctx = GNUNET_YES;
- GNUNET_CONTAINER_multipeermap_iterate (plugin->sessions,
- &lookup_session_by_sockaddr_it, &l_ctx);
- s = l_ctx.res;
- if ((NULL == s) || (NULL == s->frag_ctx))
- {
- return;
- }
-
- flow_delay.rel_value_us = (uint64_t) ntohl (udp_ack->delay);
- LOG(GNUNET_ERROR_TYPE_DEBUG, "We received a sending delay of %s\n",
- GNUNET_STRINGS_relative_time_to_string (flow_delay, GNUNET_YES));
- s->flow_delay_from_other_peer = GNUNET_TIME_relative_to_absolute (flow_delay);
+ struct DefragContext *rc = cls;
+ struct Plugin *plugin = rc->plugin;
+ size_t msize = sizeof(struct UDP_ACK_Message) + ntohs (msg->size);
+ struct UDP_ACK_Message *udp_ack;
+ uint32_t delay;
+ struct UDP_MessageWrapper *udpw;
+ struct GNUNET_ATS_Session *s;
+ struct GNUNET_HELLO_Address *address;
- ack = (const struct GNUNET_MessageHeader *) &udp_ack[1];
- if (ntohs (ack->size) != ntohs (msg->size) - sizeof(struct UDP_ACK_Message))
+ if (GNUNET_NO == rc->have_sender)
{
- GNUNET_break_op(0);
+ /* tried to defragment but never succeeded, hence will not ACK */
+ /* This can happen if we just lost msgs */
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, fragments discarded without ACK",
+ 1,
+ GNUNET_NO);
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))
+ address = GNUNET_HELLO_address_allocate (&rc->sender,
+ PLUGIN_NAME,
+ rc->udp_addr,
+ rc->udp_addr_len,
+ GNUNET_HELLO_ADDRESS_INFO_NONE);
+ s = udp_plugin_lookup_session (plugin,
+ address);
+ GNUNET_HELLO_address_free (address);
+ if (NULL == s)
{
- 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 (addr, fromlen));
- /* Expect more ACKs to arrive */
+ LOG (GNUNET_ERROR_TYPE_ERROR,
+ "Trying to transmit ACK to peer `%s' but no session found!\n",
+ udp_address_to_string (plugin,
+ rc->udp_addr,
+ rc->udp_addr_len));
+ GNUNET_CONTAINER_heap_remove_node (rc->hnode);
+ GNUNET_DEFRAGMENT_context_destroy (rc->defrag);
+ GNUNET_free (rc);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, ACK transmissions failed",
+ 1,
+ GNUNET_NO);
return;
- }
-
- LOG(GNUNET_ERROR_TYPE_DEBUG, "Message full ACK'ed\n",
- (unsigned int ) ntohs (msg->size), GNUNET_i2s (&udp_ack->sender),
- GNUNET_a2s (addr, fromlen));
-
- /* Remove fragmented message after successful sending */
- fragmented_message_done (s->frag_ctx, GNUNET_OK);
+ }
+ if (GNUNET_TIME_UNIT_FOREVER_REL.rel_value_us ==
+ s->flow_delay_for_other_peer.rel_value_us)
+ delay = UINT32_MAX;
+ else if (s->flow_delay_for_other_peer.rel_value_us < UINT32_MAX)
+ delay = s->flow_delay_for_other_peer.rel_value_us;
+ else
+ delay = UINT32_MAX - 1; /* largest value we can communicate */
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Sending ACK to `%s' including delay of %s\n",
+ udp_address_to_string (plugin,
+ rc->udp_addr,
+ rc->udp_addr_len),
+ GNUNET_STRINGS_relative_time_to_string (s->flow_delay_for_other_peer,
+ GNUNET_YES));
+ udpw = GNUNET_malloc (sizeof (struct UDP_MessageWrapper) + msize);
+ udpw->msg_size = msize;
+ udpw->payload_size = 0;
+ udpw->session = s;
+ udpw->start_time = GNUNET_TIME_absolute_get ();
+ udpw->timeout = GNUNET_TIME_UNIT_FOREVER_ABS;
+ udpw->msg_buf = (char *) &udpw[1];
+ udpw->qc = &ack_message_sent;
+ udpw->qc_cls = plugin;
+ 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 = *plugin->env->my_identity;
+ GNUNET_memcpy (&udp_ack[1],
+ msg,
+ ntohs (msg->size));
+ enqueue (plugin,
+ udpw);
+ notify_session_monitor (plugin,
+ s,
+ GNUNET_TRANSPORT_SS_UPDATE);
+ if (s->address->address_length == sizeof (struct IPv4UdpAddress))
+ schedule_select_v4 (plugin);
+ else
+ schedule_select_v6 (plugin);
}
/**
- * FIXME.
+ * We received a fragment, process it.
+ *
+ * @param plugin our plugin
+ * @param msg a message of type #GNUNET_MESSAGE_TYPE_FRAGMENT
+ * @param udp_addr sender address
+ * @param udp_addr_len number of bytes in @a udp_addr
+ * @param network_type network type the address belongs to
*/
static void
read_process_fragment (struct Plugin *plugin,
const struct GNUNET_MessageHeader *msg,
- const struct sockaddr *addr,
- socklen_t fromlen)
+ const union UdpAddress *udp_addr,
+ size_t udp_addr_len,
+ enum GNUNET_NetworkType network_type)
{
struct DefragContext *d_ctx;
struct GNUNET_TIME_Absolute now;
struct FindReceiveContext frc;
frc.rc = NULL;
- frc.addr = addr;
- frc.addr_len = fromlen;
+ frc.udp_addr = udp_addr;
+ frc.udp_addr_len = udp_addr_len;
- LOG(GNUNET_ERROR_TYPE_DEBUG, "UDP processes %u-byte fragment from `%s'\n",
- (unsigned int ) ntohs (msg->size), GNUNET_a2s (addr, fromlen));
/* Lookup existing receive context for this address */
GNUNET_CONTAINER_heap_iterate (plugin->defrag_ctxs,
- &find_receive_context, &frc);
+ &find_receive_context,
+ &frc);
now = GNUNET_TIME_absolute_get ();
d_ctx = frc.rc;
- if (d_ctx == NULL )
+ if (NULL == d_ctx)
{
/* Create a new defragmentation context */
- d_ctx = GNUNET_malloc (sizeof (struct DefragContext) + fromlen);
- memcpy (&d_ctx[1], addr, fromlen);
- d_ctx->src_addr = (const struct sockaddr *) &d_ctx[1];
- d_ctx->addr_len = fromlen;
+ d_ctx = GNUNET_malloc (sizeof (struct DefragContext) + udp_addr_len);
+ GNUNET_memcpy (&d_ctx[1],
+ udp_addr,
+ udp_addr_len);
+ d_ctx->udp_addr = (const union UdpAddress *) &d_ctx[1];
+ d_ctx->udp_addr_len = udp_addr_len;
+ d_ctx->network_type = network_type;
d_ctx->plugin = plugin;
d_ctx->defrag = GNUNET_DEFRAGMENT_context_create (plugin->env->stats,
- UDP_MTU, UDP_MAX_MESSAGES_IN_DEFRAG, d_ctx, &fragment_msg_proc,
- &ack_proc);
- d_ctx->hnode = GNUNET_CONTAINER_heap_insert (plugin->defrag_ctxs, d_ctx,
- (GNUNET_CONTAINER_HeapCostType) now.abs_value_us);
- LOG(GNUNET_ERROR_TYPE_DEBUG,
- "Created new defragmentation context for %u-byte fragment from `%s'\n",
- (unsigned int ) ntohs (msg->size), GNUNET_a2s (addr, fromlen));
+ UDP_MTU,
+ UDP_MAX_MESSAGES_IN_DEFRAG,
+ d_ctx,
+ &fragment_msg_proc,
+ &ack_proc);
+ d_ctx->hnode = GNUNET_CONTAINER_heap_insert (plugin->defrag_ctxs,
+ d_ctx,
+ (GNUNET_CONTAINER_HeapCostType) now.abs_value_us);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Created new defragmentation context for %u-byte fragment from `%s'\n",
+ (unsigned int) ntohs (msg->size),
+ udp_address_to_string (plugin,
+ udp_addr,
+ udp_addr_len));
}
else
{
- LOG(GNUNET_ERROR_TYPE_DEBUG,
- "Found existing defragmentation context for %u-byte fragment from `%s'\n",
- (unsigned int ) ntohs (msg->size), GNUNET_a2s (addr, fromlen));
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Found existing defragmentation context for %u-byte fragment from `%s'\n",
+ (unsigned int) ntohs (msg->size),
+ udp_address_to_string (plugin,
+ udp_addr,
+ udp_addr_len));
}
- if (GNUNET_OK == GNUNET_DEFRAGMENT_process_fragment (d_ctx->defrag, msg))
+ if (GNUNET_OK ==
+ GNUNET_DEFRAGMENT_process_fragment (d_ctx->defrag,
+ msg))
{
/* keep this 'rc' from expiring */
- GNUNET_CONTAINER_heap_update_cost (plugin->defrag_ctxs, d_ctx->hnode,
- (GNUNET_CONTAINER_HeapCostType) now.abs_value_us);
+ GNUNET_CONTAINER_heap_update_cost (d_ctx->hnode,
+ (GNUNET_CONTAINER_HeapCostType) now.abs_value_us);
}
if (GNUNET_CONTAINER_heap_get_size (plugin->defrag_ctxs) >
- UDP_MAX_SENDER_ADDRESSES_WITH_DEFRAG)
+ UDP_MAX_SENDER_ADDRESSES_WITH_DEFRAG)
{
/* remove 'rc' that was inactive the longest */
d_ctx = GNUNET_CONTAINER_heap_remove_root (plugin->defrag_ctxs);
- GNUNET_assert(NULL != d_ctx);
+ GNUNET_assert (NULL != d_ctx);
GNUNET_DEFRAGMENT_context_destroy (d_ctx->defrag);
- GNUNET_free(d_ctx);
+ GNUNET_free (d_ctx);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ "# UDP, Defragmentations aborted",
+ 1,
+ GNUNET_NO);
}
}
char buf[65536] GNUNET_ALIGN;
ssize_t size;
const struct GNUNET_MessageHeader *msg;
-
- fromlen = sizeof(addr);
- memset (&addr, 0, sizeof(addr));
- size = GNUNET_NETWORK_socket_recvfrom (rsock, buf, sizeof(buf),
- (struct sockaddr *) &addr, &fromlen);
+ struct IPv4UdpAddress v4;
+ struct IPv6UdpAddress v6;
+ const struct sockaddr *sa;
+ const struct sockaddr_in *sa4;
+ const struct sockaddr_in6 *sa6;
+ const union UdpAddress *int_addr;
+ size_t int_addr_len;
+ enum GNUNET_NetworkType network_type;
+
+ fromlen = sizeof (addr);
+ memset (&addr,
+ 0,
+ sizeof(addr));
+ size = GNUNET_NETWORK_socket_recvfrom (rsock,
+ buf,
+ sizeof (buf),
+ (struct sockaddr *) &addr,
+ &fromlen);
+ sa = (const struct sockaddr *) &addr;
#if MINGW
/* On SOCK_DGRAM UDP sockets recvfrom might fail with a
* WSAECONNRESET error to indicate that previous sendto() (yes, sendto!)
* error indicates a previous send operation resulted in an ICMP Port
* Unreachable message.
*/
- if ( (-1 == size) && (ECONNRESET == errno) )
- return;
+ if ( (-1 == size) &&
+ (ECONNRESET == errno) )
+ return;
#endif
if (-1 == size)
{
/* Connection failure or something. Not a protocol violation. */
return;
}
+
+ /* Check if this is a STUN packet */
+ if (GNUNET_NO !=
+ GNUNET_NAT_stun_handle_packet (plugin->nat,
+ (const struct sockaddr *) &addr,
+ fromlen,
+ buf,
+ size))
+ return; /* was STUN, do not process further */
+
if (size < sizeof(struct GNUNET_MessageHeader))
{
LOG (GNUNET_ERROR_TYPE_WARNING,
"UDP got %u bytes from %s, which is not enough for a GNUnet message header\n",
(unsigned int ) size,
- GNUNET_a2s ((const struct sockaddr *) &addr, fromlen));
+ GNUNET_a2s (sa,
+ fromlen));
/* _MAY_ be a connection failure (got partial message) */
/* But it _MAY_ also be that the other side uses non-GNUnet protocol. */
- GNUNET_break_op(0);
+ GNUNET_break_op (0);
return;
}
- msg = (const struct GNUNET_MessageHeader *) buf;
+ msg = (const struct GNUNET_MessageHeader *) buf;
LOG (GNUNET_ERROR_TYPE_DEBUG,
"UDP received %u-byte message from `%s' type %u\n",
(unsigned int) size,
- GNUNET_a2s ((const struct sockaddr *) &addr, fromlen),
+ GNUNET_a2s (sa,
+ fromlen),
ntohs (msg->type));
-
if (size != ntohs (msg->size))
{
LOG (GNUNET_ERROR_TYPE_WARNING,
- "UDP malformed message header from %s\n",
- (unsigned int ) size,
- GNUNET_a2s ((const struct sockaddr *) &addr, fromlen));
- GNUNET_break_op(0);
+ "UDP malformed message (size %u) header from %s\n",
+ (unsigned int) size,
+ GNUNET_a2s (sa,
+ fromlen));
+ GNUNET_break_op (0);
return;
}
GNUNET_STATISTICS_update (plugin->env->stats,
- "# UDP, total, bytes, received",
+ "# UDP, total bytes received",
size,
GNUNET_NO);
+ network_type = plugin->env->get_address_type (plugin->env->cls,
+ sa,
+ fromlen);
+ switch (sa->sa_family)
+ {
+ case AF_INET:
+ sa4 = (const struct sockaddr_in *) &addr;
+ v4.options = 0;
+ v4.ipv4_addr = sa4->sin_addr.s_addr;
+ v4.u4_port = sa4->sin_port;
+ int_addr = (union UdpAddress *) &v4;
+ int_addr_len = sizeof (v4);
+ break;
+ case AF_INET6:
+ sa6 = (const struct sockaddr_in6 *) &addr;
+ v6.options = 0;
+ v6.ipv6_addr = sa6->sin6_addr;
+ v6.u6_port = sa6->sin6_port;
+ int_addr = (union UdpAddress *) &v6;
+ int_addr_len = sizeof (v6);
+ break;
+ default:
+ GNUNET_break (0);
+ return;
+ }
switch (ntohs (msg->type))
{
case GNUNET_MESSAGE_TYPE_TRANSPORT_BROADCAST_BEACON:
if (GNUNET_YES == plugin->enable_broadcasting_receiving)
- udp_broadcast_receive (plugin, buf, size, (const struct sockaddr *) &addr,
- fromlen);
+ udp_broadcast_receive (plugin,
+ buf,
+ size,
+ int_addr,
+ int_addr_len,
+ network_type);
return;
case GNUNET_MESSAGE_TYPE_TRANSPORT_UDP_MESSAGE:
- read_process_msg (plugin, msg, (const struct sockaddr *) &addr, fromlen);
+ if (ntohs (msg->size) < sizeof(struct UDPMessage))
+ {
+ GNUNET_break_op(0);
+ return;
+ }
+ process_udp_message (plugin,
+ (const struct UDPMessage *) msg,
+ int_addr,
+ int_addr_len,
+ network_type);
return;
case GNUNET_MESSAGE_TYPE_TRANSPORT_UDP_ACK:
- read_process_ack (plugin, msg, (const struct sockaddr *) &addr, fromlen);
+ read_process_ack (plugin,
+ msg,
+ int_addr,
+ int_addr_len);
return;
case GNUNET_MESSAGE_TYPE_FRAGMENT:
- read_process_fragment (plugin, msg, (const struct sockaddr *) &addr,
- fromlen);
+ read_process_fragment (plugin,
+ msg,
+ int_addr,
+ int_addr_len,
+ network_type);
return;
default:
GNUNET_break_op(0);
/**
- * FIXME.
+ * Removes messages from the transmission queue that have
+ * timed out, and then selects a message that should be
+ * transmitted next.
+ *
+ * @param plugin the UDP plugin
+ * @param sock which socket should we process the queue for (v4 or v6)
+ * @return message selected for transmission, or NULL for none
*/
static struct UDP_MessageWrapper *
-remove_timeout_messages_and_select (struct UDP_MessageWrapper *head,
+remove_timeout_messages_and_select (struct Plugin *plugin,
struct GNUNET_NETWORK_Handle *sock)
{
- struct UDP_MessageWrapper *udpw = NULL;
+ struct UDP_MessageWrapper *udpw;
struct GNUNET_TIME_Relative remaining;
- struct Session *session;
- struct Plugin *plugin;
+ struct GNUNET_ATS_Session *session;
int removed;
removed = GNUNET_NO;
- udpw = head;
+ udpw = (sock == plugin->sockv4)
+ ? plugin->ipv4_queue_head
+ : plugin->ipv6_queue_head;
while (NULL != udpw)
{
session = udpw->session;
- plugin = session->plugin;
/* Find messages with timeout */
remaining = GNUNET_TIME_absolute_get_remaining (udpw->timeout);
if (GNUNET_TIME_UNIT_ZERO.rel_value_us == remaining.rel_value_us)
{
/* Message timed out */
- switch (udpw->msg_type)
- {
- case UMT_MSG_UNFRAGMENTED:
- GNUNET_STATISTICS_update (plugin->env->stats,
- "# UDP, total, bytes, sent, timeout",
- udpw->msg_size,
- GNUNET_NO);
- GNUNET_STATISTICS_update (plugin->env->stats,
- "# UDP, total, messages, sent, timeout",
- 1,
- GNUNET_NO);
- GNUNET_STATISTICS_update (plugin->env->stats,
- "# UDP, unfragmented msgs, messages, sent, timeout",
- 1,
- GNUNET_NO);
- GNUNET_STATISTICS_update (plugin->env->stats,
- "# UDP, unfragmented msgs, bytes, sent, timeout",
- udpw->payload_size,
- GNUNET_NO);
- /* 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);
- call_continuation (udpw, GNUNET_SYSERR);
- /* Remove message */
- removed = GNUNET_YES;
- dequeue (plugin, udpw);
- GNUNET_free(udpw);
- break;
- case UMT_MSG_FRAGMENTED:
- /* Fragmented message */
- GNUNET_STATISTICS_update (plugin->env->stats,
- "# UDP, total, bytes, sent, timeout",
- udpw->frag_ctx->on_wire_size,
- GNUNET_NO);
- GNUNET_STATISTICS_update (plugin->env->stats,
- "# UDP, total, messages, sent, timeout",
- 1,
- GNUNET_NO);
- 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);
-
- GNUNET_STATISTICS_update (plugin->env->stats,
- "# UDP, fragmented msgs, messages, sent, timeout",
- 1,
- GNUNET_NO);
- GNUNET_STATISTICS_update (plugin->env->stats,
- "# UDP, fragmented msgs, bytes, sent, timeout",
- udpw->frag_ctx->payload_size,
- GNUNET_NO);
- /* Remove fragmented message due to timeout */
- fragmented_message_done (udpw->frag_ctx, GNUNET_SYSERR);
- break;
- case UMT_MSG_ACK:
- GNUNET_STATISTICS_update (plugin->env->stats,
- "# UDP, total, bytes, sent, timeout",
- udpw->msg_size,
- GNUNET_NO);
- GNUNET_STATISTICS_update (plugin->env->stats,
- "# UDP, total, messages, sent, timeout",
- 1,
- GNUNET_NO);
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "ACK Message for peer `%s' with size %u timed out\n",
- GNUNET_i2s (&udpw->session->target),
- udpw->payload_size);
- call_continuation (udpw, GNUNET_SYSERR);
- removed = GNUNET_YES;
- dequeue (plugin, udpw);
- GNUNET_free(udpw);
- break;
- default:
- break;
- }
+ removed = GNUNET_YES;
+ dequeue (plugin,
+ udpw);
+ udpw->qc (udpw->qc_cls,
+ udpw,
+ GNUNET_SYSERR);
+ GNUNET_free (udpw);
+
if (sock == plugin->sockv4)
+ {
udpw = plugin->ipv4_queue_head;
+ }
else if (sock == plugin->sockv6)
+ {
udpw = plugin->ipv6_queue_head;
+ }
else
{
- GNUNET_break(0); /* should never happen */
+ GNUNET_break (0); /* should never happen */
udpw = NULL;
}
GNUNET_STATISTICS_update (plugin->env->stats,
}
else
{
- /* 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_us == remaining.rel_value_us)
+ /* Message did not time out, check transmission time */
+ remaining = GNUNET_TIME_absolute_get_remaining (udpw->transmission_time);
+ if (0 == remaining.rel_value_us)
{
/* this message is not delayed */
LOG (GNUNET_ERROR_TYPE_DEBUG,
/* Message is delayed, try next */
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Message for peer `%s' (%u bytes) is delayed for %s\n",
- GNUNET_i2s (&udpw->session->target), udpw->payload_size,
- GNUNET_STRINGS_relative_time_to_string (remaining, GNUNET_YES));
+ GNUNET_i2s (&udpw->session->target),
+ udpw->payload_size,
+ GNUNET_STRINGS_relative_time_to_string (remaining,
+ GNUNET_YES));
udpw = udpw->next;
}
}
/**
- * FIXME.
+ * We failed to transmit a message via UDP. Generate
+ * a descriptive error message.
+ *
+ * @param plugin our plugin
+ * @param sa target address we were trying to reach
+ * @param slen number of bytes in @a sa
+ * @param error the errno value returned from the sendto() call
*/
static void
analyze_send_error (struct Plugin *plugin,
const struct sockaddr *sa,
- socklen_t slen, int error)
+ socklen_t slen,
+ int 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)))
+ enum GNUNET_NetworkType type;
+
+ type = plugin->env->get_address_type (plugin->env->cls,
+ sa,
+ slen);
+ if ( ( (GNUNET_NT_LAN == type) ||
+ (GNUNET_NT_WAN == type) ) &&
+ ( (ENETUNREACH == errno) ||
+ (ENETDOWN == errno) ) )
{
if (slen == sizeof (struct sockaddr_in))
{
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));
+ GNUNET_a2s (sa,
+ slen));
}
if (slen == sizeof (struct sockaddr_in6))
{
{
LOG (GNUNET_ERROR_TYPE_WARNING,
"UDP could not transmit message to `%s': `%s'\n",
- GNUNET_a2s (sa, slen), STRERROR (error));
+ GNUNET_a2s (sa,
+ slen),
+ STRERROR (error));
}
}
/**
- * FIXME.
+ * It is time to try to transmit a UDP message. Select one
+ * and send.
+ *
+ * @param plugin the plugin
+ * @param sock which socket (v4/v6) to send on
*/
-static size_t
+static void
udp_select_send (struct Plugin *plugin,
struct GNUNET_NETWORK_Handle *sock)
{
ssize_t sent;
socklen_t slen;
- struct sockaddr *a;
+ const struct sockaddr *a;
const struct IPv4UdpAddress *u4;
struct sockaddr_in a4;
const struct IPv6UdpAddress *u6;
struct sockaddr_in6 a6;
struct UDP_MessageWrapper *udpw;
- /* 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 */
-
- if (sizeof (struct IPv4UdpAddress) == udpw->session->address->address_length)
+ /* Find message(s) to send */
+ while (NULL != (udpw = remove_timeout_messages_and_select (plugin,
+ sock)))
{
- u4 = udpw->session->address->address;
- memset (&a4, 0, sizeof(a4));
- a4.sin_family = AF_INET;
+ if (sizeof (struct IPv4UdpAddress) == udpw->session->address->address_length)
+ {
+ u4 = udpw->session->address->address;
+ memset (&a4,
+ 0,
+ sizeof(a4));
+ a4.sin_family = AF_INET;
#if HAVE_SOCKADDR_IN_SIN_LEN
- a4.sin_len = sizeof (a4);
+ a4.sin_len = sizeof (a4);
#endif
- a4.sin_port = u4->u4_port;
- memcpy (&a4.sin_addr, &u4->ipv4_addr, sizeof(struct in_addr));
- a = (struct sockaddr *) &a4;
- slen = sizeof (a4);
- }
- else if (sizeof (struct IPv6UdpAddress) == udpw->session->address->address_length)
- {
- u6 = udpw->session->address->address;
- memset (&a6, 0, sizeof(a6));
- a6.sin6_family = AF_INET6;
+ a4.sin_port = u4->u4_port;
+ a4.sin_addr.s_addr = u4->ipv4_addr;
+ a = (const struct sockaddr *) &a4;
+ slen = sizeof (a4);
+ }
+ else if (sizeof (struct IPv6UdpAddress) == udpw->session->address->address_length)
+ {
+ u6 = udpw->session->address->address;
+ memset (&a6,
+ 0,
+ sizeof(a6));
+ a6.sin6_family = AF_INET6;
#if HAVE_SOCKADDR_IN_SIN_LEN
- a6.sin6_len = sizeof (a6);
+ a6.sin6_len = sizeof (a6);
#endif
- a6.sin6_port = u6->u6_port;
- memcpy (&a6.sin6_addr, &u6->ipv6_addr, sizeof(struct in6_addr));
- a = (struct sockaddr *) &a6;
- slen = sizeof (a6);
- }
- else
- {
- call_continuation (udpw, GNUNET_OK);
- dequeue (plugin, udpw);
+ a6.sin6_port = u6->u6_port;
+ a6.sin6_addr = u6->ipv6_addr;
+ a = (const struct sockaddr *) &a6;
+ slen = sizeof (a6);
+ }
+ else
+ {
+ GNUNET_break (0);
+ dequeue (plugin,
+ udpw);
+ udpw->qc (udpw->qc_cls,
+ udpw,
+ GNUNET_SYSERR);
+ notify_session_monitor (plugin,
+ udpw->session,
+ GNUNET_TRANSPORT_SS_UPDATE);
+ GNUNET_free (udpw);
+ continue;
+ }
+ sent = GNUNET_NETWORK_socket_sendto (sock,
+ udpw->msg_buf,
+ udpw->msg_size,
+ a,
+ slen);
+ udpw->session->last_transmit_time
+ = GNUNET_TIME_absolute_max (GNUNET_TIME_absolute_get (),
+ udpw->session->last_transmit_time);
+ dequeue (plugin,
+ udpw);
+ if (GNUNET_SYSERR == sent)
+ {
+ /* Failure */
+ analyze_send_error (plugin,
+ a,
+ slen,
+ errno);
+ udpw->qc (udpw->qc_cls,
+ 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' `%s' (%d: %s)\n",
+ (unsigned int) (udpw->msg_size),
+ GNUNET_i2s (&udpw->session->target),
+ GNUNET_a2s (a,
+ slen),
+ (int ) sent,
+ (sent < 0) ? STRERROR (errno) : "ok");
+ 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;
+ udpw->qc (udpw->qc_cls,
+ udpw,
+ GNUNET_OK);
+ }
notify_session_monitor (plugin,
udpw->session,
GNUNET_TRANSPORT_SS_UPDATE);
GNUNET_free (udpw);
- return GNUNET_SYSERR;
- }
-
- sent = GNUNET_NETWORK_socket_sendto (sock,
- udpw->msg_buf,
- udpw->msg_size,
- a,
- slen);
- if (GNUNET_SYSERR == sent)
- {
- /* Failure */
- analyze_send_error (plugin, a, 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' `%s' (%d: %s)\n",
- (unsigned int ) (udpw->msg_size), GNUNET_i2s (&udpw->session->target),
- GNUNET_a2s (a, slen), (int ) sent,
- (sent < 0) ? STRERROR (errno) : "ok");
- 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);
- notify_session_monitor (plugin,
- udpw->session,
- GNUNET_TRANSPORT_SS_UPDATE);
- GNUNET_free(udpw);
- return sent;
}
+/* ***************** Event loop (part 2) *************** */
+
+
/**
* We have been notified that our readset has something to read. We don't
* know which socket needs to be read, so we have to check each one
* Then reschedule this function to be called again once more is available.
*
* @param cls the plugin handle
- * @param tc the scheduling context (for rescheduling this function again)
*/
static void
-udp_plugin_select (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
+udp_plugin_select_v4 (void *cls)
{
struct Plugin *plugin = cls;
+ const struct GNUNET_SCHEDULER_TaskContext *tc;
- plugin->select_task = NULL;
- if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
+ plugin->select_task_v4 = NULL;
+ if (NULL == plugin->sockv4)
return;
- 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);
+ tc = GNUNET_SCHEDULER_get_task_context ();
+ if ((0 != (tc->reason & GNUNET_SCHEDULER_REASON_READ_READY)) &&
+ (GNUNET_NETWORK_fdset_isset (tc->read_ready,
+ plugin->sockv4)))
+ udp_select_read (plugin,
+ plugin->sockv4);
+ udp_select_send (plugin,
+ plugin->sockv4);
+ schedule_select_v4 (plugin);
}
* Then reschedule this function to be called again once more is available.
*
* @param cls the plugin handle
- * @param tc the scheduling context (for rescheduling this function again)
*/
static void
-udp_plugin_select_v6 (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
+udp_plugin_select_v6 (void *cls)
{
struct Plugin *plugin = cls;
+ const struct GNUNET_SCHEDULER_TaskContext *tc;
plugin->select_task_v6 = NULL;
- if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
+ if (NULL == plugin->sockv6)
return;
- 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);
+ tc = GNUNET_SCHEDULER_get_task_context ();
+ if ( (0 != (tc->reason & GNUNET_SCHEDULER_REASON_READ_READY)) &&
+ (GNUNET_NETWORK_fdset_isset (tc->read_ready,
+ plugin->sockv6)) )
+ udp_select_read (plugin,
+ plugin->sockv6);
+
+ udp_select_send (plugin,
+ plugin->sockv6);
+ schedule_select_v6 (plugin);
}
+/* ******************* Initialization *************** */
+
+
/**
* Setup the UDP sockets (for IPv4 and IPv6) for the plugin.
*
* @param bind_v4 IPv4 address to bind to (can be NULL, for 'any')
* @return number of sockets that were successfully bound
*/
-static int
+static unsigned int
setup_sockets (struct Plugin *plugin,
const struct sockaddr_in6 *bind_v6,
const struct sockaddr_in *bind_v4)
{
int tries;
- int sockets_created = 0;
+ unsigned int sockets_created = 0;
struct sockaddr_in6 server_addrv6;
struct sockaddr_in server_addrv4;
- struct sockaddr *server_addr;
- struct sockaddr *addrs[2];
+ const struct sockaddr *server_addr;
+ const struct sockaddr *addrs[2];
socklen_t addrlens[2];
socklen_t addrlen;
int eno;
eno = EINVAL;
if (GNUNET_YES == plugin->enable_ipv6)
{
- plugin->sockv6 = GNUNET_NETWORK_socket_create (PF_INET6, SOCK_DGRAM, 0);
+ plugin->sockv6 = GNUNET_NETWORK_socket_create (PF_INET6,
+ SOCK_DGRAM,
+ 0);
if (NULL == plugin->sockv6)
{
- LOG(GNUNET_ERROR_TYPE_WARNING,
- "Disabling IPv6 since it is not supported on this system!\n");
+ LOG (GNUNET_ERROR_TYPE_INFO,
+ _("Disabling IPv6 since it is not supported on this system!\n"));
plugin->enable_ipv6 = GNUNET_NO;
}
else
{
- memset (&server_addrv6, '\0', sizeof(struct sockaddr_in6));
+ memset (&server_addrv6,
+ 0,
+ sizeof(struct sockaddr_in6));
#if HAVE_SOCKADDR_IN_SIN_LEN
server_addrv6.sin6_len = sizeof (struct sockaddr_in6);
#endif
server_addrv6.sin6_addr = in6addr_any;
if (0 == plugin->port) /* autodetect */
- server_addrv6.sin6_port = htons (
- GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_STRONG, 33537)
- + 32000);
+ server_addrv6.sin6_port
+ = htons (GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_STRONG,
+ 33537)
+ + 32000);
else
server_addrv6.sin6_port = htons (plugin->port);
- addrlen = sizeof(struct sockaddr_in6);
- server_addr = (struct sockaddr *) &server_addrv6;
+ addrlen = sizeof (struct sockaddr_in6);
+ server_addr = (const struct sockaddr *) &server_addrv6;
tries = 0;
while (tries < 10)
{
LOG(GNUNET_ERROR_TYPE_DEBUG,
"Binding to IPv6 `%s'\n",
- GNUNET_a2s (server_addr, addrlen));
+ GNUNET_a2s (server_addr,
+ addrlen));
/* binding */
- if (GNUNET_OK
- == GNUNET_NETWORK_socket_bind (plugin->sockv6, server_addr,
- addrlen))
+ if (GNUNET_OK ==
+ GNUNET_NETWORK_socket_bind (plugin->sockv6,
+ server_addr,
+ addrlen))
break;
eno = errno;
if (0 != plugin->port)
{
- tries = 10; /* fail */
+ tries = 10; /* fail immediately */
break; /* bind failed on specific port */
}
/* autodetect */
- server_addrv6.sin6_port = htons (
- GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_STRONG, 33537)
- + 32000);
+ server_addrv6.sin6_port
+ = htons (GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_STRONG,
+ 33537)
+ + 32000);
tries++;
}
if (tries >= 10)
plugin->enable_ipv6 = GNUNET_NO;
plugin->sockv6 = NULL;
}
-
- if (plugin->sockv6 != NULL )
+ else
+ {
+ plugin->port = ntohs (server_addrv6.sin6_port);
+ }
+ if (NULL != plugin->sockv6)
{
LOG (GNUNET_ERROR_TYPE_DEBUG,
- "IPv6 socket created on port %s\n",
- GNUNET_a2s (server_addr, addrlen));
- addrs[sockets_created] = (struct sockaddr *) &server_addrv6;
- addrlens[sockets_created] = sizeof(struct sockaddr_in6);
+ "IPv6 UDP socket created listinging at %s\n",
+ GNUNET_a2s (server_addr,
+ addrlen));
+ addrs[sockets_created] = server_addr;
+ addrlens[sockets_created] = addrlen;
sockets_created++;
}
else
{
- LOG (GNUNET_ERROR_TYPE_ERROR,
- "Failed to bind UDP socket to %s: %s\n",
- GNUNET_a2s (server_addr, addrlen),
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ _("Failed to bind UDP socket to %s: %s\n"),
+ GNUNET_a2s (server_addr,
+ addrlen),
STRERROR (eno));
}
}
/* Create IPv4 socket */
eno = EINVAL;
- plugin->sockv4 = GNUNET_NETWORK_socket_create (PF_INET, SOCK_DGRAM, 0);
+ plugin->sockv4 = GNUNET_NETWORK_socket_create (PF_INET,
+ SOCK_DGRAM,
+ 0);
if (NULL == plugin->sockv4)
{
GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING,
"socket");
- LOG(GNUNET_ERROR_TYPE_WARNING,
- "Disabling IPv4 since it is not supported on this system!\n");
+ LOG (GNUNET_ERROR_TYPE_INFO,
+ _("Disabling IPv4 since it is not supported on this system!\n"));
plugin->enable_ipv4 = GNUNET_NO;
}
else
{
- memset (&server_addrv4, '\0', sizeof(struct sockaddr_in));
+ memset (&server_addrv4,
+ 0,
+ sizeof(struct sockaddr_in));
#if HAVE_SOCKADDR_IN_SIN_LEN
server_addrv4.sin_len = sizeof (struct sockaddr_in);
#endif
if (0 == plugin->port)
/* autodetect */
- server_addrv4.sin_port = htons (GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_STRONG,
- 33537)
- + 32000);
+ server_addrv4.sin_port
+ = htons (GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_STRONG,
+ 33537)
+ + 32000);
else
server_addrv4.sin_port = htons (plugin->port);
- addrlen = sizeof(struct sockaddr_in);
- server_addr = (struct sockaddr *) &server_addrv4;
+ addrlen = sizeof (struct sockaddr_in);
+ server_addr = (const struct sockaddr *) &server_addrv4;
tries = 0;
while (tries < 10)
{
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Binding to IPv4 `%s'\n",
- GNUNET_a2s (server_addr, addrlen));
+ GNUNET_a2s (server_addr,
+ addrlen));
/* binding */
- if (GNUNET_OK
- == GNUNET_NETWORK_socket_bind (plugin->sockv4, server_addr, addrlen))
+ if (GNUNET_OK ==
+ GNUNET_NETWORK_socket_bind (plugin->sockv4,
+ server_addr,
+ addrlen))
break;
eno = errno;
if (0 != plugin->port)
}
/* autodetect */
- server_addrv4.sin_port = htons (
- GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_STRONG, 33537)
- + 32000);
+ server_addrv4.sin_port
+ = htons (GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_STRONG,
+ 33537)
+ + 32000);
tries++;
}
-
if (tries >= 10)
{
GNUNET_NETWORK_socket_close (plugin->sockv4);
plugin->enable_ipv4 = GNUNET_NO;
plugin->sockv4 = NULL;
}
+ else
+ {
+ plugin->port = ntohs (server_addrv4.sin_port);
+ }
if (NULL != plugin->sockv4)
{
- LOG(GNUNET_ERROR_TYPE_DEBUG, "IPv4 socket created on port %s\n",
- GNUNET_a2s (server_addr, addrlen));
- addrs[sockets_created] = (struct sockaddr *) &server_addrv4;
- addrlens[sockets_created] = sizeof(struct sockaddr_in);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "IPv4 socket created on port %s\n",
+ GNUNET_a2s (server_addr,
+ addrlen));
+ addrs[sockets_created] = server_addr;
+ addrlens[sockets_created] = addrlen;
sockets_created++;
}
else
{
LOG (GNUNET_ERROR_TYPE_ERROR,
_("Failed to bind UDP socket to %s: %s\n"),
- GNUNET_a2s (server_addr, addrlen),
+ GNUNET_a2s (server_addr,
+ addrlen),
STRERROR (eno));
}
}
if (0 == sockets_created)
{
- LOG(GNUNET_ERROR_TYPE_WARNING, _("Failed to open UDP sockets\n"));
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ _("Failed to open UDP sockets\n"));
return 0; /* No sockets created, return */
}
-
- /* Create file descriptors */
- if (plugin->enable_ipv4 == GNUNET_YES)
- {
- plugin->rs_v4 = GNUNET_NETWORK_fdset_create ();
- plugin->ws_v4 = GNUNET_NETWORK_fdset_create ();
- GNUNET_NETWORK_fdset_zero (plugin->rs_v4);
- GNUNET_NETWORK_fdset_zero (plugin->ws_v4);
- if (NULL != plugin->sockv4)
- {
- GNUNET_NETWORK_fdset_set (plugin->rs_v4, plugin->sockv4);
- GNUNET_NETWORK_fdset_set (plugin->ws_v4, plugin->sockv4);
- }
- }
-
- if (plugin->enable_ipv6 == GNUNET_YES)
- {
- plugin->rs_v6 = GNUNET_NETWORK_fdset_create ();
- plugin->ws_v6 = GNUNET_NETWORK_fdset_create ();
- GNUNET_NETWORK_fdset_zero (plugin->rs_v6);
- GNUNET_NETWORK_fdset_zero (plugin->ws_v6);
- if (NULL != plugin->sockv6)
- {
- GNUNET_NETWORK_fdset_set (plugin->rs_v6, plugin->sockv6);
- GNUNET_NETWORK_fdset_set (plugin->ws_v6, plugin->sockv6);
- }
- }
-
- schedule_select (plugin);
+ schedule_select_v4 (plugin);
+ schedule_select_v6 (plugin);
plugin->nat = GNUNET_NAT_register (plugin->env->cfg,
- GNUNET_NO,
- plugin->port,
+ "transport-udp",
+ IPPROTO_UDP,
sockets_created,
- (const struct sockaddr **) addrs,
+ addrs,
addrlens,
&udp_nat_port_map_callback,
NULL,
plugin);
-
return sockets_created;
}
-/**
- * Return information about the given session to the
- * monitor callback.
- *
- * @param cls the `struct Plugin` with the monitor callback (`sic`)
- * @param peer peer we send information about
- * @param value our `struct Session` to send information about
- * @return #GNUNET_OK (continue to iterate)
- */
-static int
-send_session_info_iter (void *cls,
- const struct GNUNET_PeerIdentity *peer,
- void *value)
-{
- struct Plugin *plugin = cls;
- struct Session *session = value;
-
- notify_session_monitor (plugin,
- session,
- GNUNET_TRANSPORT_SS_INIT);
- notify_session_monitor (plugin,
- session,
- GNUNET_TRANSPORT_SS_UP);
- return GNUNET_OK;
-}
-
-
-/**
- * Begin monitoring sessions of a plugin. There can only
- * be one active monitor per plugin (i.e. if there are
- * multiple monitors, the transport service needs to
- * multiplex the generated events over all of them).
- *
- * @param cls closure of the plugin
- * @param sic callback to invoke, NULL to disable monitor;
- * plugin will being by iterating over all active
- * sessions immediately and then enter monitor mode
- * @param sic_cls closure for @a sic
- */
-static void
-udp_plugin_setup_monitor (void *cls,
- GNUNET_TRANSPORT_SessionInfoCallback sic,
- void *sic_cls)
-{
- struct Plugin *plugin = cls;
-
- plugin->sic = sic;
- plugin->sic_cls = sic_cls;
- if (NULL != sic)
- {
- GNUNET_CONTAINER_multipeermap_iterate (plugin->sessions,
- &send_session_info_iter,
- plugin);
- /* signal end of first iteration */
- sic (sic_cls, NULL, NULL);
- }
-}
-
-
/**
* The exported method. Makes the core api available via a global and
* returns the udp transport API.
unsigned long long port;
unsigned long long aport;
unsigned long long udp_max_bps;
- unsigned long long enable_v6;
- unsigned long long enable_broadcasting;
- unsigned long long enable_broadcasting_recv;
+ int enable_v6;
+ int enable_broadcasting;
+ int enable_broadcasting_recv;
char *bind4_address;
char *bind6_address;
- char *fancy_interval;
struct GNUNET_TIME_Relative interval;
struct sockaddr_in server_addrv4;
struct sockaddr_in6 server_addrv6;
- int res;
+ unsigned int res;
int have_bind4;
int have_bind6;
/* Get port number: port == 0 : autodetect a port,
* > 0 : use this port, not given : 2086 default */
if (GNUNET_OK !=
- GNUNET_CONFIGURATION_get_value_number (env->cfg, "transport-udp",
- "PORT", &port))
+ GNUNET_CONFIGURATION_get_value_number (env->cfg,
+ "transport-udp",
+ "PORT",
+ &port))
port = 2086;
+ if (port > 65535)
+ {
+ GNUNET_log_config_invalid (GNUNET_ERROR_TYPE_ERROR,
+ "transport-udp",
+ "PORT",
+ _("must be in [0,65535]"));
+ return NULL;
+ }
if (GNUNET_OK !=
- GNUNET_CONFIGURATION_get_value_number (env->cfg, "transport-udp",
- "ADVERTISED_PORT", &aport))
+ GNUNET_CONFIGURATION_get_value_number (env->cfg,
+ "transport-udp",
+ "ADVERTISED_PORT",
+ &aport))
aport = port;
- if (port > 65535)
+ if (aport > 65535)
{
- LOG (GNUNET_ERROR_TYPE_WARNING,
- _("Given `%s' option is out of range: %llu > %u\n"),
- "PORT", port,
- 65535);
+ GNUNET_log_config_invalid (GNUNET_ERROR_TYPE_ERROR,
+ "transport-udp",
+ "ADVERTISED_PORT",
+ _("must be in [0,65535]"));
return NULL;
}
- /* Protocols */
if (GNUNET_YES ==
- GNUNET_CONFIGURATION_get_value_yesno (env->cfg, "nat", "DISABLEV6"))
+ GNUNET_CONFIGURATION_get_value_yesno (env->cfg,
+ "nat",
+ "DISABLEV6"))
enable_v6 = GNUNET_NO;
else
enable_v6 = GNUNET_YES;
- /* Addresses */
have_bind4 = GNUNET_NO;
- memset (&server_addrv4, 0, sizeof(server_addrv4));
+ memset (&server_addrv4,
+ 0,
+ sizeof (server_addrv4));
if (GNUNET_YES ==
- GNUNET_CONFIGURATION_get_value_string (env->cfg, "transport-udp",
- "BINDTO", &bind4_address))
+ GNUNET_CONFIGURATION_get_value_string (env->cfg,
+ "transport-udp",
+ "BINDTO",
+ &bind4_address))
{
LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Binding udp plugin to specific address: `%s'\n",
+ "Binding UDP plugin to specific address: `%s'\n",
bind4_address);
if (1 != inet_pton (AF_INET,
bind4_address,
&server_addrv4.sin_addr))
{
+ GNUNET_log_config_invalid (GNUNET_ERROR_TYPE_ERROR,
+ "transport-udp",
+ "BINDTO",
+ _("must be valid IPv4 address"));
GNUNET_free (bind4_address);
return NULL;
}
have_bind4 = GNUNET_YES;
}
- GNUNET_free_non_null(bind4_address);
+ GNUNET_free_non_null (bind4_address);
have_bind6 = GNUNET_NO;
- memset (&server_addrv6, 0, sizeof(server_addrv6));
+ memset (&server_addrv6,
+ 0,
+ sizeof (server_addrv6));
if (GNUNET_YES ==
- GNUNET_CONFIGURATION_get_value_string (env->cfg, "transport-udp",
- "BINDTO6", &bind6_address))
+ GNUNET_CONFIGURATION_get_value_string (env->cfg,
+ "transport-udp",
+ "BINDTO6",
+ &bind6_address))
{
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Binding udp plugin to specific address: `%s'\n",
bind6_address,
&server_addrv6.sin6_addr))
{
- LOG (GNUNET_ERROR_TYPE_ERROR,
- _("Invalid IPv6 address: `%s'\n"),
- bind6_address);
+ GNUNET_log_config_invalid (GNUNET_ERROR_TYPE_ERROR,
+ "transport-udp",
+ "BINDTO6",
+ _("must be valid IPv6 address"));
GNUNET_free (bind6_address);
return NULL;
}
}
GNUNET_free_non_null (bind6_address);
- /* Enable neighbour discovery */
enable_broadcasting = GNUNET_CONFIGURATION_get_value_yesno (env->cfg,
- "transport-udp", "BROADCAST");
+ "transport-udp",
+ "BROADCAST");
if (enable_broadcasting == GNUNET_SYSERR)
enable_broadcasting = GNUNET_NO;
enable_broadcasting_recv = GNUNET_CONFIGURATION_get_value_yesno (env->cfg,
- "transport-udp", "BROADCAST_RECEIVE");
+ "transport-udp",
+ "BROADCAST_RECEIVE");
if (enable_broadcasting_recv == GNUNET_SYSERR)
enable_broadcasting_recv = GNUNET_YES;
if (GNUNET_SYSERR ==
- GNUNET_CONFIGURATION_get_value_string (env->cfg, "transport-udp",
- "BROADCAST_INTERVAL",
- &fancy_interval))
+ GNUNET_CONFIGURATION_get_value_time (env->cfg,
+ "transport-udp",
+ "BROADCAST_INTERVAL",
+ &interval))
{
- interval = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 10);
- }
- else
- {
- if (GNUNET_SYSERR ==
- GNUNET_STRINGS_fancy_time_to_relative (fancy_interval, &interval))
- {
- interval = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 30);
- }
- GNUNET_free(fancy_interval);
+ interval = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS,
+ 10);
}
-
- /* Maximum datarate */
if (GNUNET_OK !=
- GNUNET_CONFIGURATION_get_value_number (env->cfg, "transport-udp",
- "MAX_BPS", &udp_max_bps))
+ GNUNET_CONFIGURATION_get_value_number (env->cfg,
+ "transport-udp",
+ "MAX_BPS",
+ &udp_max_bps))
{
- udp_max_bps = 1024 * 1024 * 50; /* 50 MB/s == infinity for practical purposes */
+ /* 50 MB/s == infinity for practical purposes */
+ udp_max_bps = 1024 * 1024 * 50;
}
p = GNUNET_new (struct Plugin);
p->enable_broadcasting = enable_broadcasting;
p->enable_broadcasting_receiving = enable_broadcasting_recv;
p->env = env;
- p->sessions = GNUNET_CONTAINER_multipeermap_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);
- GNUNET_BANDWIDTH_tracker_init (&p->tracker, NULL, NULL,
- GNUNET_BANDWIDTH_value_init ((uint32_t) udp_max_bps), 30);
- LOG(GNUNET_ERROR_TYPE_DEBUG,
- "Setting up sockets\n");
+ p->sessions = GNUNET_CONTAINER_multipeermap_create (16,
+ GNUNET_NO);
+ p->defrag_ctxs = GNUNET_CONTAINER_heap_create (GNUNET_CONTAINER_HEAP_ORDER_MIN);
+ GNUNET_BANDWIDTH_tracker_init (&p->tracker,
+ NULL,
+ NULL,
+ GNUNET_BANDWIDTH_value_init ((uint32_t) udp_max_bps),
+ 30);
res = setup_sockets (p,
(GNUNET_YES == have_bind6) ? &server_addrv6 : NULL,
(GNUNET_YES == have_bind4) ? &server_addrv4 : NULL);
- if ((res == 0) || ((p->sockv4 == NULL )&& (p->sockv6 == NULL)))
+ if ( (0 == res) ||
+ ( (NULL == p->sockv4) &&
+ (NULL == p->sockv6) ) )
{
LOG (GNUNET_ERROR_TYPE_ERROR,
- _("Failed to create network sockets, plugin failed\n"));
+ _("Failed to create UDP network sockets\n"));
GNUNET_CONTAINER_multipeermap_destroy (p->sessions);
GNUNET_CONTAINER_heap_destroy (p->defrag_ctxs);
- GNUNET_SERVER_mst_destroy (p->mst);
+ if (NULL != p->nat)
+ GNUNET_NAT_unregister (p->nat);
GNUNET_free (p);
return NULL;
}
/* Setup broadcasting and receiving beacons */
- setup_broadcast (p, &server_addrv6, &server_addrv4);
+ setup_broadcast (p,
+ &server_addrv6,
+ &server_addrv4);
api = GNUNET_new (struct GNUNET_TRANSPORT_PluginFunctions);
api->cls = p;
- api->send = NULL;
api->disconnect_session = &udp_disconnect_session;
api->query_keepalive_factor = &udp_query_keepalive_factor;
api->disconnect_peer = &udp_disconnect;
api->check_address = &udp_plugin_check_address;
api->get_session = &udp_plugin_get_session;
api->send = &udp_plugin_send;
- api->get_network = &udp_get_network;
+ api->get_network = &udp_plugin_get_network;
+ api->get_network_for_address = &udp_plugin_get_network_for_address;
api->update_session_timeout = &udp_plugin_update_session_timeout;
api->setup_monitor = &udp_plugin_setup_monitor;
return api;
struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
struct Plugin *plugin = api->cls;
struct PrettyPrinterContext *cur;
- struct PrettyPrinterContext *next;
struct UDP_MessageWrapper *udpw;
if (NULL == plugin)
{
- GNUNET_free(api);
+ GNUNET_free (api);
return NULL;
}
stop_broadcast (plugin);
- if (plugin->select_task != NULL )
+ if (NULL != plugin->select_task_v4)
{
- GNUNET_SCHEDULER_cancel (plugin->select_task);
- plugin->select_task = NULL;
+ GNUNET_SCHEDULER_cancel (plugin->select_task_v4);
+ plugin->select_task_v4 = NULL;
}
- if (plugin->select_task_v6 != NULL )
+ if (NULL != plugin->select_task_v6)
{
GNUNET_SCHEDULER_cancel (plugin->select_task_v6);
plugin->select_task_v6 = NULL;
}
-
- /* Closing sockets */
- if (GNUNET_YES == plugin->enable_ipv4)
+ if (NULL != plugin->sockv4)
{
- if (NULL != plugin->sockv4)
- {
- GNUNET_break (GNUNET_OK ==
- GNUNET_NETWORK_socket_close (plugin->sockv4));
- plugin->sockv4 = NULL;
- }
- GNUNET_NETWORK_fdset_destroy (plugin->rs_v4);
- GNUNET_NETWORK_fdset_destroy (plugin->ws_v4);
+ GNUNET_break (GNUNET_OK ==
+ GNUNET_NETWORK_socket_close (plugin->sockv4));
+ plugin->sockv4 = NULL;
}
- if (GNUNET_YES == plugin->enable_ipv6)
+ if (NULL != plugin->sockv6)
{
- if (NULL != plugin->sockv6)
- {
- GNUNET_break (GNUNET_OK ==
- GNUNET_NETWORK_socket_close (plugin->sockv6));
- plugin->sockv6 = NULL;
-
- GNUNET_NETWORK_fdset_destroy (plugin->rs_v6);
- GNUNET_NETWORK_fdset_destroy (plugin->ws_v6);
- }
+ GNUNET_break (GNUNET_OK ==
+ GNUNET_NETWORK_socket_close (plugin->sockv6));
+ plugin->sockv6 = NULL;
}
if (NULL != plugin->nat)
{
if (NULL != plugin->defrag_ctxs)
{
GNUNET_CONTAINER_heap_iterate (plugin->defrag_ctxs,
- &heap_cleanup_iterator, NULL);
+ &heap_cleanup_iterator,
+ NULL);
GNUNET_CONTAINER_heap_destroy (plugin->defrag_ctxs);
plugin->defrag_ctxs = NULL;
}
- if (NULL != plugin->mst)
- {
- GNUNET_SERVER_mst_destroy (plugin->mst);
- plugin->mst = NULL;
- }
-
- /* Clean up leftover messages */
- udpw = plugin->ipv4_queue_head;
- while (NULL != udpw)
+ while (NULL != (udpw = plugin->ipv4_queue_head))
{
- struct UDP_MessageWrapper *tmp = udpw->next;
- dequeue (plugin, udpw);
- call_continuation (udpw, GNUNET_SYSERR);
- GNUNET_free(udpw);
- udpw = tmp;
+ dequeue (plugin,
+ udpw);
+ udpw->qc (udpw->qc_cls,
+ udpw,
+ GNUNET_SYSERR);
+ GNUNET_free (udpw);
}
- udpw = plugin->ipv6_queue_head;
- while (NULL != udpw)
+ while (NULL != (udpw = plugin->ipv6_queue_head))
{
- struct UDP_MessageWrapper *tmp = udpw->next;
- dequeue (plugin, udpw);
- call_continuation (udpw, GNUNET_SYSERR);
- GNUNET_free(udpw);
- udpw = tmp;
+ dequeue (plugin,
+ udpw);
+ udpw->qc (udpw->qc_cls,
+ udpw,
+ GNUNET_SYSERR);
+ GNUNET_free (udpw);
}
-
- /* Clean up sessions */
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Cleaning up sessions\n");
GNUNET_CONTAINER_multipeermap_iterate (plugin->sessions,
- &disconnect_and_free_it, plugin);
+ &disconnect_and_free_it,
+ plugin);
GNUNET_CONTAINER_multipeermap_destroy (plugin->sessions);
- next = plugin->ppc_dll_head;
- for (cur = next; NULL != cur; cur = next)
+ while (NULL != (cur = plugin->ppc_dll_head))
{
- GNUNET_break(0);
- next = cur->next;
+ GNUNET_break (0);
GNUNET_CONTAINER_DLL_remove (plugin->ppc_dll_head,
plugin->ppc_dll_tail,
cur);
GNUNET_RESOLVER_request_cancel (cur->resolver_handle);
+ if (NULL != cur->timeout_task)
+ {
+ GNUNET_SCHEDULER_cancel (cur->timeout_task);
+ cur->timeout_task = NULL;
+ }
GNUNET_free (cur);
}
GNUNET_free (plugin);
projects / oweals / gnunet.git / blobdiff