/*
This file is part of GNUnet
- (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Christian Grothoff (and other contributing authors)
+ (C) 2002--2012 Christian Grothoff (and other contributing authors)
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
#include "gnunet_transport_plugin.h"
#include "transport.h"
-#define DEBUG_TCP GNUNET_EXTRA_LOGGING
+#define LOG(kind,...) GNUNET_log_from (kind, "transport-tcp",__VA_ARGS__)
+
+/**
+ * How long until we give up on establishing an NAT connection?
+ * Must be > 4 RTT
+ */
+#define NAT_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 10)
-#define DEBUG_TCP_NAT GNUNET_EXTRA_LOGGING
GNUNET_NETWORK_STRUCT_BEGIN
*/
struct SessionHeader header;
- /**
- * Stored in a linked list.
- */
- struct Session *next;
-
/**
* Pointer to the global plugin struct.
*/
*/
struct GNUNET_SERVER_Client *client;
+ /**
+ * Task cleaning up a NAT client connection establishment attempt;
+ */
+ GNUNET_SCHEDULER_TaskIdentifier nat_connection_timeout;
+
/**
* Messages currently pending for transmission
* to this peer, if any.
/**
* Handle for pending transmission request.
*/
- struct GNUNET_CONNECTION_TransmitHandle *transmit_handle;
+ struct GNUNET_SERVER_TransmitHandle *transmit_handle;
/**
* To whom are we talking to (set to our identity
*/
GNUNET_SCHEDULER_TaskIdentifier receive_delay_task;
+ /**
+ * Session timeout task
+ */
+ GNUNET_SCHEDULER_TaskIdentifier timeout_task;
+
/**
* Address of the other peer (either based on our 'connect'
* call or on our 'accept' call).
+ *
+ * struct IPv4TcpAddress or struct IPv6TcpAddress
+ *
*/
- void *connect_addr;
+ void *addr;
/**
- * Last activity on this connection. Used to select preferred
- * connection.
+ * Length of connect_addr.
*/
- struct GNUNET_TIME_Absolute last_activity;
+ size_t addrlen;
/**
- * Length of connect_addr.
+ * Last activity on this connection. Used to select preferred
+ * connection.
*/
- size_t connect_alen;
+ struct GNUNET_TIME_Absolute last_activity;
/**
* Are we still expecting the welcome message? (GNUNET_YES/GNUNET_NO)
struct GNUNET_NAT_Handle *nat;
/**
- * List of open TCP sessions.
+ * Map from peer identities to sessions for the given peer.
*/
- struct Session *sessions;
-
- struct GNUNET_CONTAINER_MultiHashMap * sessionmap;
+ struct GNUNET_CONTAINER_MultiHashMap *sessionmap;
/**
* Handle to the network service.
};
+/**
+ * Start session timeout
+ */
+static void
+start_session_timeout (struct Session *s);
+
+
+/**
+ * Increment session timeout due to activity
+ */
+static void
+reschedule_session_timeout (struct Session *s);
+
+
+/**
+ * Cancel timeout
+ */
+static void
+stop_session_timeout (struct Session *s);
+
+
+/* DEBUG CODE */
+static const char *
+tcp_address_to_string (void *cls, const void *addr, size_t addrlen);
+
+
+static unsigned int sessions;
+
+
+static void
+inc_sessions (struct Plugin *plugin, struct Session *session, int line)
+{
+ sessions++;
+ unsigned int size = GNUNET_CONTAINER_multihashmap_size(plugin->sessionmap);
+ if (sessions != size)
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "Inconsistent sessions %u <-> session map size: %u\n",
+ sessions, size);
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "%4i Session increased to %u (session map size: %u): `%s' `%s'\n",
+ line,
+ sessions,
+ size,
+ GNUNET_i2s (&session->target),
+ tcp_address_to_string (NULL, session->addr, session->addrlen));
+}
+
+
+static void
+dec_sessions (struct Plugin *plugin, struct Session *session, int line)
+{
+ GNUNET_assert (sessions > 0);
+ unsigned int size = GNUNET_CONTAINER_multihashmap_size(plugin->sessionmap);
+ sessions--;
+ if (sessions != size)
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "Inconsistent sessions %u <-> session map size: %u\n",
+ sessions, size);
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "%4i Session decreased to %u (session map size: %u): `%s' `%s'\n",
+ line,
+ sessions,
+ size,
+ GNUNET_i2s (&session->target),
+ tcp_address_to_string (NULL, session->addr, session->addrlen));
+}
+/* DEBUG CODE */
+
+
/**
* Function to check if an inbound connection is acceptable.
* Mostly used to limit the total number of open connections
{
struct Plugin *plugin = cls;
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Accepting new incoming TCP connection\n");
if (0 == plugin->max_connections)
return GNUNET_NO;
plugin->max_connections--;
void *arg;
size_t args;
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "tcp",
- "NPMC called with %d for address `%s'\n", add_remove,
- GNUNET_a2s (addr, addrlen));
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "NPMC called with %d for address `%s'\n", add_remove,
+ GNUNET_a2s (addr, addrlen));
/* convert 'addr' to our internal format */
switch (addr->sa_family)
{
int af;
uint16_t port;
- if (addrlen == sizeof (struct IPv6TcpAddress))
+ switch (addrlen)
{
+ case sizeof (struct IPv6TcpAddress):
t6 = addr;
af = AF_INET6;
port = ntohs (t6->t6_port);
memcpy (&a6, &t6->ipv6_addr, sizeof (a6));
sb = &a6;
- }
- else if (addrlen == sizeof (struct IPv4TcpAddress))
- {
+ break;
+ case sizeof (struct IPv4TcpAddress):
t4 = addr;
af = AF_INET;
port = ntohs (t4->t4_port);
memcpy (&a4, &t4->ipv4_addr, sizeof (a4));
sb = &a4;
- }
- else
- {
- GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, "tcp",
- _("Unexpected address length: %u bytes\n"),
- (unsigned int) addrlen);
+ break;
+ default:
+ LOG (GNUNET_ERROR_TYPE_ERROR,
+ _("Unexpected address length: %u bytes\n"),
+ (unsigned int) addrlen);
GNUNET_break (0);
return NULL;
}
}
+/**
+ * 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
+ * @param added location to store the number of bytes in the buffer.
+ * If the function returns GNUNET_SYSERR, its contents are undefined.
+ * @return GNUNET_OK on success, GNUNET_SYSERR on failure
+ */
+static int
+tcp_string_to_address (void *cls, const char *addr, uint16_t addrlen,
+ void **buf, size_t *added)
+{
+ struct sockaddr_storage socket_address;
+
+ if ((NULL == addr) || (addrlen == 0))
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ if ('\0' != addr[addrlen - 1])
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ if (strlen (addr) != addrlen - 1)
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ if (GNUNET_OK !=
+ GNUNET_STRINGS_to_address_ip (addr, strlen (addr),
+ &socket_address))
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ switch (socket_address.ss_family)
+ {
+ case AF_INET:
+ {
+ struct IPv4TcpAddress *t4;
+ struct sockaddr_in *in4 = (struct sockaddr_in *) &socket_address;
+
+ t4 = GNUNET_malloc (sizeof (struct IPv4TcpAddress));
+ t4->ipv4_addr = in4->sin_addr.s_addr;
+ t4->t4_port = in4->sin_port;
+ *buf = t4;
+ *added = sizeof (struct IPv4TcpAddress);
+ return GNUNET_OK;
+ }
+ case AF_INET6:
+ {
+ struct IPv6TcpAddress *t6;
+ struct sockaddr_in6 *in6 = (struct sockaddr_in6 *) &socket_address;
+ t6 = GNUNET_malloc (sizeof (struct IPv6TcpAddress));
+ t6->ipv6_addr = in6->sin6_addr;
+ t6->t6_port = in6->sin6_port;
+ *buf = t6;
+ *added = sizeof (struct IPv6TcpAddress);
+ return GNUNET_OK;
+ }
+ default:
+ return GNUNET_SYSERR;
+ }
+}
+
+
+struct SessionClientCtx
+{
+ const struct GNUNET_SERVER_Client *client;
+ struct Session *ret;
+};
+
+
+static int
+session_lookup_by_client_it (void *cls,
+ const struct GNUNET_HashCode * key,
+ void *value)
+{
+ struct SessionClientCtx *sc_ctx = cls;
+ struct Session *s = value;
+
+ if (s->client == sc_ctx->client)
+ {
+ sc_ctx->ret = s;
+ return GNUNET_NO;
+ }
+ return GNUNET_YES;
+}
+
+
/**
* Find the session handle for the given client.
*
* @return NULL if no matching session exists
*/
static struct Session *
-find_session_by_client (struct Plugin *plugin,
- const struct GNUNET_SERVER_Client *client)
+lookup_session_by_client (struct Plugin *plugin,
+ const struct GNUNET_SERVER_Client *client)
{
- struct Session *ret;
+ struct SessionClientCtx sc_ctx;
- ret = plugin->sessions;
- while ((ret != NULL) && (client != ret->client))
- ret = ret->next;
- return ret;
+ sc_ctx.client = client;
+ sc_ctx.ret = NULL;
+ GNUNET_CONTAINER_multihashmap_iterate (plugin->sessionmap, &session_lookup_by_client_it, &sc_ctx);
+ return sc_ctx.ret;
}
*
* @param plugin the plugin
* @param target peer to connect to
- * @param client client to use
+ * @param client client to use, reference counter must have already been increased
* @param is_nat this a NAT session, we should wait for a client to
* connect to us from an address, then assign that to
* the session
struct PendingMessage *pm;
struct WelcomeMessage welcome;
- if (is_nat != GNUNET_YES)
- GNUNET_assert (client != NULL);
+ if (GNUNET_YES != is_nat)
+ GNUNET_assert (NULL != client);
else
- GNUNET_assert (client == NULL);
-#if DEBUG_TCP
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "tcp",
- "Creating new session for peer `%4s'\n",
- GNUNET_i2s (target));
-#endif
+ GNUNET_assert (NULL == client);
+
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Creating new session for peer `%4s'\n",
+ GNUNET_i2s (target));
ret = GNUNET_malloc (sizeof (struct Session));
ret->last_activity = GNUNET_TIME_absolute_get ();
ret->plugin = plugin;
ret->is_nat = is_nat;
- if (is_nat != GNUNET_YES) /* If not a NAT WAIT conn, add it to global list */
- {
- ret->next = plugin->sessions;
- plugin->sessions = ret;
- }
ret->client = client;
ret->target = *target;
ret->expecting_welcome = GNUNET_YES;
pm->message_size, GNUNET_NO);
GNUNET_CONTAINER_DLL_insert (ret->pending_messages_head,
ret->pending_messages_tail, pm);
- if (is_nat != GNUNET_YES)
+ if (GNUNET_YES != is_nat)
+ {
GNUNET_STATISTICS_update (plugin->env->stats,
gettext_noop ("# TCP sessions active"), 1,
GNUNET_NO);
+ }
+ start_session_timeout (ret);
+
return ret;
}
char *cbuf;
size_t ret;
- GNUNET_assert (session != NULL);
+ GNUNET_assert (NULL != session);
session->transmit_handle = NULL;
plugin = session->plugin;
- if (buf == NULL)
+ if (NULL == buf)
{
-#if DEBUG_TCP
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "tcp",
- "Timeout trying to transmit to peer `%4s', discarding message queue.\n",
- GNUNET_i2s (&session->target));
-#endif
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Timeout trying to transmit to peer `%4s', discarding message queue.\n",
+ GNUNET_i2s (&session->target));
/* timeout; cancel all messages that have already expired */
hd = NULL;
tl = NULL;
{
GNUNET_CONTAINER_DLL_remove (session->pending_messages_head,
session->pending_messages_tail, pos);
-#if DEBUG_TCP
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "tcp",
- "Failed to transmit %u byte message to `%4s'.\n",
- pos->message_size, GNUNET_i2s (&session->target));
-#endif
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Failed to transmit %u byte message to `%4s'.\n",
+ pos->message_size, GNUNET_i2s (&session->target));
ret += pos->message_size;
GNUNET_CONTAINER_DLL_insert_after (hd, tl, tl, pos);
}
GNUNET_CONTAINER_DLL_remove (session->pending_messages_head,
session->pending_messages_tail, pos);
GNUNET_assert (size >= pos->message_size);
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "tcp",
- "Transmitting message of type %u\n",
- ntohs (((struct GNUNET_MessageHeader *) pos->msg)->type));
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Transmitting message of type %u\n",
+ ntohs (((struct GNUNET_MessageHeader *) pos->msg)->type));
/* FIXME: this memcpy can be up to 7% of our total runtime */
memcpy (cbuf, pos->msg, pos->message_size);
cbuf += pos->message_size;
}
GNUNET_assert (hd == NULL);
GNUNET_assert (tl == NULL);
-#if DEBUG_TCP > 1
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "tcp", "Transmitting %u bytes\n",
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "Transmitting %u bytes\n",
ret);
-#endif
GNUNET_STATISTICS_update (plugin->env->stats,
gettext_noop ("# bytes currently in TCP buffers"),
-(int64_t) ret, GNUNET_NO);
static void
disconnect_session (struct Session *session)
{
- struct Session *prev;
- struct Session *pos;
struct PendingMessage *pm;
+ struct Plugin * plugin = session->plugin;
-#if DEBUG_TCP
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "tcp",
- "Disconnecting from `%4s' at %s.\n",
- GNUNET_i2s (&session->target),
- (session->connect_addr !=
- NULL) ? tcp_address_to_string (session->plugin,
- session->connect_addr,
- session->connect_alen) :
- "*");
-#endif
- /* remove from session list */
- prev = NULL;
- pos = session->plugin->sessions;
- while (pos != session)
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Disconnecting session of peer `%s' address `%s'\n",
+ GNUNET_i2s (&session->target),
+ tcp_address_to_string (NULL, session->addr, session->addrlen));
+
+ stop_session_timeout (session);
+
+ if (GNUNET_YES == GNUNET_CONTAINER_multihashmap_remove (plugin->sessionmap, &session->target.hashPubKey, session))
{
- prev = pos;
- pos = pos->next;
+ GNUNET_STATISTICS_update (session->plugin->env->stats,
+ gettext_noop ("# TCP sessions active"), -1,
+ GNUNET_NO);
+ dec_sessions (plugin, session, __LINE__);
}
- if (prev == NULL)
- session->plugin->sessions = session->next;
- else
- prev->next = session->next;
+ else GNUNET_assert (GNUNET_YES == GNUNET_CONTAINER_multihashmap_remove (plugin->nat_wait_conns, &session->target.hashPubKey, session));
/* clean up state */
if (session->transmit_handle != NULL)
{
- GNUNET_CONNECTION_notify_transmit_ready_cancel (session->transmit_handle);
+ GNUNET_SERVER_notify_transmit_ready_cancel (session->transmit_handle);
session->transmit_handle = NULL;
}
session->plugin->env->session_end (session->plugin->env->cls,
&session->target, session);
+
+ if (GNUNET_SCHEDULER_NO_TASK != session->nat_connection_timeout)
+ {
+ GNUNET_SCHEDULER_cancel (session->nat_connection_timeout);
+ session->nat_connection_timeout = GNUNET_SCHEDULER_NO_TASK;
+ }
+
while (NULL != (pm = session->pending_messages_head))
{
-#if DEBUG_TCP
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "tcp",
- pm->transmit_cont !=
- NULL ? "Could not deliver message to `%4s'.\n" :
- "Could not deliver message to `%4s', notifying.\n",
- GNUNET_i2s (&session->target));
-#endif
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ pm->transmit_cont !=
+ NULL ? "Could not deliver message to `%4s'.\n" :
+ "Could not deliver message to `%4s', notifying.\n",
+ GNUNET_i2s (&session->target));
GNUNET_STATISTICS_update (session->plugin->env->stats,
gettext_noop ("# bytes currently in TCP buffers"),
-(int64_t) pm->message_size, GNUNET_NO);
GNUNET_SYSERR);
GNUNET_free (pm);
}
- GNUNET_break (session->client != NULL);
if (session->receive_delay_task != GNUNET_SCHEDULER_NO_TASK)
{
GNUNET_SCHEDULER_cancel (session->receive_delay_task);
- if (session->client != NULL)
+ if (NULL != session->client)
GNUNET_SERVER_receive_done (session->client, GNUNET_SYSERR);
}
- if (session->client != NULL)
+ if (NULL != session->client)
{
+ GNUNET_SERVER_client_disconnect (session->client);
GNUNET_SERVER_client_drop (session->client);
session->client = NULL;
}
- GNUNET_STATISTICS_update (session->plugin->env->stats,
- gettext_noop ("# TCP sessions active"), -1,
- GNUNET_NO);
- GNUNET_free_non_null (session->connect_addr);
+ GNUNET_free_non_null (session->addr);
GNUNET_assert (NULL == session->transmit_handle);
GNUNET_free (session);
}
-/**
- * Given two otherwise equivalent sessions, pick the better one.
- *
- * @param s1 one session (also default)
- * @param s2 other session
- * @return "better" session (more active)
- */
-static struct Session *
-select_better_session (struct Session *s1, struct Session *s2)
-{
- if (s1 == NULL)
- return s2;
- if (s2 == NULL)
- return s1;
- if ((s1->expecting_welcome == GNUNET_NO) &&
- (s2->expecting_welcome == GNUNET_YES))
- return s1;
- if ((s1->expecting_welcome == GNUNET_YES) &&
- (s2->expecting_welcome == GNUNET_NO))
- return s2;
- if (s1->last_activity.abs_value < s2->last_activity.abs_value)
- return s2;
- if (s1->last_activity.abs_value > s2->last_activity.abs_value)
- return s1;
- if ((GNUNET_YES == s1->inbound) && (GNUNET_NO == s2->inbound))
- return s1;
- if ((GNUNET_NO == s1->inbound) && (GNUNET_YES == s2->inbound))
- return s2;
- return s1;
-}
-
-
-
-/**
- * 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
- * @param target who should receive this message
- * @param msg the message to transmit
- * @param msgbuf_size number of bytes in 'msg'
- * @param priority how important is the message (most plugins will
- * ignore message priority and just FIFO)
- * @param timeout 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 session which session must be used (or NULL for "any")
- * @param addr the address to use (can be NULL if the plugin
- * is "on its own" (i.e. re-use existing TCP connection))
- * @param addrlen length of the address in bytes
- * @param force_address GNUNET_YES if the plugin MUST use the given address,
- * GNUNET_NO means the plugin may use any other address and
- * GNUNET_SYSERR means that only reliable existing
- * bi-directional connections should be used (regardless
- * of address)
- * @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 and NAT)
- */
-static ssize_t
-tcp_plugin_send (void *cls, const struct GNUNET_PeerIdentity *target,
- const char *msg, size_t msgbuf_size, uint32_t priority,
- struct GNUNET_TIME_Relative timeout, struct Session *session,
- const void *addr, size_t addrlen, int force_address,
- GNUNET_TRANSPORT_TransmitContinuation cont, void *cont_cls)
-{
- struct Plugin *plugin = cls;
- struct Session *cand_session;
- struct Session *next;
- struct PendingMessage *pm;
- struct GNUNET_CONNECTION_Handle *sa;
- int af;
- const void *sb;
- size_t sbs;
- struct sockaddr_in a4;
- struct sockaddr_in6 a6;
- const struct IPv4TcpAddress *t4;
- const struct IPv6TcpAddress *t6;
- unsigned int is_natd;
-
- GNUNET_STATISTICS_update (plugin->env->stats,
- gettext_noop ("# bytes TCP was asked to transmit"),
- msgbuf_size, GNUNET_NO);
- /* FIXME: we could do this cheaper with a hash table
- * where we could restrict the iteration to entries that match
- * the target peer... */
- is_natd = GNUNET_NO;
- if (session == NULL)
- {
- cand_session = NULL;
- next = plugin->sessions;
- while (NULL != (session = next))
- {
- next = session->next;
- GNUNET_assert (session->client != NULL);
- if (0 !=
- memcmp (target, &session->target,
- sizeof (struct GNUNET_PeerIdentity)))
- continue;
- if (((GNUNET_SYSERR == force_address) &&
- (session->expecting_welcome == GNUNET_NO)) ||
- (GNUNET_NO == force_address))
- {
- cand_session = select_better_session (cand_session, session);
- continue;
- }
- if (GNUNET_SYSERR == force_address)
- continue;
- GNUNET_break (GNUNET_YES == force_address);
- if (addr == NULL)
- {
- GNUNET_break (0);
- break;
- }
- if ((addrlen != session->connect_alen) && (session->is_nat == GNUNET_NO))
- continue;
- if ((0 != memcmp (session->connect_addr, addr, addrlen)) &&
- (session->is_nat == GNUNET_NO))
- continue;
- cand_session = select_better_session (cand_session, session);
- }
- session = cand_session;
- }
- if ((session == NULL) && (addrlen == 0))
- {
-#if DEBUG_TCP
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "tcp",
- "Asked to transmit to `%4s' without address and I have no existing connection (failing).\n",
- GNUNET_i2s (target));
-#endif
- GNUNET_STATISTICS_update (plugin->env->stats,
- gettext_noop
- ("# bytes discarded by TCP (no address and no connection)"),
- msgbuf_size, GNUNET_NO);
- return -1;
- }
- if (session == NULL)
- {
- if (addrlen == sizeof (struct IPv6TcpAddress))
- {
- GNUNET_assert (NULL != addr); /* make static analysis happy */
- t6 = addr;
- af = AF_INET6;
- 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 = t6->t6_port;
- if (t6->t6_port == 0)
- is_natd = GNUNET_YES;
- memcpy (&a6.sin6_addr, &t6->ipv6_addr, sizeof (struct in6_addr));
- sb = &a6;
- sbs = sizeof (a6);
- }
- else if (addrlen == sizeof (struct IPv4TcpAddress))
- {
- GNUNET_assert (NULL != addr); /* make static analysis happy */
- t4 = addr;
- af = AF_INET;
- 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 = t4->t4_port;
- if (t4->t4_port == 0)
- is_natd = GNUNET_YES;
- a4.sin_addr.s_addr = t4->ipv4_addr;
- sb = &a4;
- sbs = sizeof (a4);
- }
- else
- {
- GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, "tcp",
- _("Address of unexpected length: %u\n"), addrlen);
- GNUNET_break (0);
- return -1;
- }
-
- if ((is_natd == GNUNET_YES) && (addrlen == sizeof (struct IPv6TcpAddress)))
- return -1; /* NAT client only works with IPv4 addresses */
- if (0 == plugin->max_connections)
- return -1; /* saturated */
-
- if ((is_natd == GNUNET_YES) && (NULL != plugin->nat) &&
- (GNUNET_NO ==
- GNUNET_CONTAINER_multihashmap_contains (plugin->nat_wait_conns,
- &target->hashPubKey)))
- {
-#if DEBUG_TCP_NAT
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "tcp",
- _("Found valid IPv4 NAT address (creating session)!\n"));
-#endif
- session = create_session (plugin, target, NULL, GNUNET_YES);
- GNUNET_assert (session != NULL);
-
- /* create new message entry */
- pm = GNUNET_malloc (sizeof (struct PendingMessage) + msgbuf_size);
- /* FIXME: the memset of this malloc can be up to 2% of our total runtime */
- pm->msg = (const char *) &pm[1];
- memcpy (&pm[1], msg, msgbuf_size);
- /* FIXME: this memcpy can be up to 7% of our total run-time
- * (for transport service) */
- pm->message_size = msgbuf_size;
- pm->timeout = GNUNET_TIME_relative_to_absolute (timeout);
- pm->transmit_cont = cont;
- pm->transmit_cont_cls = cont_cls;
-
- /* append pm to pending_messages list */
- GNUNET_CONTAINER_DLL_insert_tail (session->pending_messages_head,
- session->pending_messages_tail, pm);
-
- GNUNET_assert (GNUNET_CONTAINER_multihashmap_put
- (plugin->nat_wait_conns, &target->hashPubKey, session,
- GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY) ==
- GNUNET_OK);
-#if DEBUG_TCP_NAT
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "tcp",
- "Created NAT WAIT connection to `%4s' at `%s'\n",
- GNUNET_i2s (target), GNUNET_a2s (sb, sbs));
-#endif
- GNUNET_NAT_run_client (plugin->nat, &a4);
- return 0;
- }
- if ((is_natd == GNUNET_YES) &&
- (GNUNET_YES ==
- GNUNET_CONTAINER_multihashmap_contains (plugin->nat_wait_conns,
- &target->hashPubKey)))
- {
- /* Only do one NAT punch attempt per peer identity */
- return -1;
- }
- sa = GNUNET_CONNECTION_create_from_sockaddr (af, sb, sbs);
- if (sa == NULL)
- {
-#if DEBUG_TCP
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "tcp",
- "Failed to create connection to `%4s' at `%s'\n",
- GNUNET_i2s (target), GNUNET_a2s (sb, sbs));
-#endif
- GNUNET_STATISTICS_update (plugin->env->stats,
- gettext_noop
- ("# bytes discarded by TCP (failed to connect)"),
- msgbuf_size, GNUNET_NO);
- return -1;
- }
- GNUNET_assert (0 != plugin->max_connections);
- plugin->max_connections--;
-#if DEBUG_TCP_NAT
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "tcp",
- "Asked to transmit to `%4s', creating fresh session using address `%s'.\n",
- GNUNET_i2s (target), GNUNET_a2s (sb, sbs));
-#endif
- session =
- create_session (plugin, target,
- GNUNET_SERVER_connect_socket (plugin->server, sa),
- GNUNET_NO);
- session->connect_addr = GNUNET_malloc (addrlen);
- memcpy (session->connect_addr, addr, addrlen);
- session->connect_alen = addrlen;
- if (addrlen != 0)
- {
- struct GNUNET_ATS_Information ats;
- ats = plugin->env->get_address_type (plugin->env->cls, sb ,sbs);
- session->ats_address_network_type = ats.value;
- }
- else
- GNUNET_break (0);
- }
- else /* session != NULL */
- {
- /* check if session is valid */
- struct Session *ses = plugin->sessions;
-
- if (0 !=
- memcmp (target, &session->target, sizeof (struct GNUNET_PeerIdentity)))
- {
- GNUNET_break (0);
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- "Got session %p for `%s', but should be for peer `%s'!\n",
- session, GNUNET_i2s (&session->target),
- GNUNET_h2s (&target->hashPubKey));
- return -1;
- }
-
- while ((ses != NULL) && (ses != session))
- ses = ses->next;
- if (ses == NULL)
- {
- return -1;
- }
- }
- GNUNET_assert (session != NULL);
- GNUNET_assert (session->client != NULL);
- GNUNET_SERVER_client_set_timeout (session->client,
- GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT);
- GNUNET_STATISTICS_update (plugin->env->stats,
- gettext_noop ("# bytes currently in TCP buffers"),
- msgbuf_size, GNUNET_NO);
- /* create new message entry */
- pm = GNUNET_malloc (sizeof (struct PendingMessage) + msgbuf_size);
- pm->msg = (const char *) &pm[1];
- memcpy (&pm[1], msg, msgbuf_size);
- pm->message_size = msgbuf_size;
- pm->timeout = GNUNET_TIME_relative_to_absolute (timeout);
- pm->transmit_cont = cont;
- pm->transmit_cont_cls = cont_cls;
-
- /* append pm to pending_messages list */
- GNUNET_CONTAINER_DLL_insert_tail (session->pending_messages_head,
- session->pending_messages_tail, pm);
-#if DEBUG_TCP
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "tcp",
- "Asked to transmit %u bytes to `%s', added message to list.\n",
- msgbuf_size, GNUNET_i2s (target));
-#endif
- process_pending_messages (session);
- return msgbuf_size;
-}
-
/**
* Function that can be used by the transport service to transmit
* a message using the plugin. Note that in the case of a
* a fresh connection to another peer.
*
* @param cls closure
- * @param target who should receive this message
- * @param msg the message to transmit
- * @param msgbuf_size number of bytes in 'msg'
+ * @param session 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 timeout how long to wait at most for the transmission (does not
+ * @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 session which session must be used (or NULL for "any")
- * @param addr the address to use (can be NULL if the plugin
- * is "on its own" (i.e. re-use existing TCP connection))
- * @param addrlen length of the address in bytes
- * @param force_address GNUNET_YES if the plugin MUST use the given address,
- * GNUNET_NO means the plugin may use any other address and
- * GNUNET_SYSERR means that only reliable existing
- * bi-directional connections should be used (regardless
- * of address)
* @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
* @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 and NAT)
+ * and does NOT mean that the message was not transmitted (DV)
*/
static ssize_t
-tcp_plugin_send_new (void *cls,
+tcp_plugin_send (void *cls,
struct Session *session,
const char *msgbuf, size_t msgbuf_size,
unsigned int priority,
struct Plugin * plugin = cls;
struct PendingMessage *pm;
- GNUNET_assert (session != NULL);
- GNUNET_assert (session->client != NULL);
+ GNUNET_assert (NULL != plugin);
+ GNUNET_assert (NULL != session);
- GNUNET_SERVER_client_set_timeout (session->client,
- GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT);
- GNUNET_STATISTICS_update (plugin->env->stats,
- gettext_noop ("# bytes currently in TCP buffers"),
- msgbuf_size, GNUNET_NO);
/* create new message entry */
pm = GNUNET_malloc (sizeof (struct PendingMessage) + msgbuf_size);
pm->msg = (const char *) &pm[1];
pm->transmit_cont = cont;
pm->transmit_cont_cls = cont_cls;
- /* append pm to pending_messages list */
- GNUNET_CONTAINER_DLL_insert_tail (session->pending_messages_head,
- session->pending_messages_tail, pm);
-#if DEBUG_TCP
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "tcp",
- "Asked to transmit %u bytes to `%s', added message to list.\n",
- msgbuf_size, GNUNET_i2s (target));
-#endif
- process_pending_messages (session);
- return msgbuf_size;
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Asked to transmit %u bytes to `%s', added message to list.\n",
+ msgbuf_size, GNUNET_i2s (&session->target));
+
+ reschedule_session_timeout (session);
+
+ if (GNUNET_YES == GNUNET_CONTAINER_multihashmap_contains_value(plugin->sessionmap, &session->target.hashPubKey, session))
+ {
+ GNUNET_assert (session->client != NULL);
+
+ GNUNET_SERVER_client_set_timeout (session->client,
+ GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ gettext_noop ("# bytes currently in TCP buffers"),
+ msgbuf_size, GNUNET_NO);
+
+ /* append pm to pending_messages list */
+ GNUNET_CONTAINER_DLL_insert_tail (session->pending_messages_head,
+ session->pending_messages_tail, pm);
+
+ process_pending_messages (session);
+ return msgbuf_size;
+ }
+ else if (GNUNET_YES == GNUNET_CONTAINER_multihashmap_contains_value(plugin->nat_wait_conns, &session->target.hashPubKey, session))
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "This NAT WAIT session for peer `%s' is not yet ready!\n",
+ GNUNET_i2s (&session->target));
+
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ gettext_noop ("# bytes currently in TCP buffers"),
+ msgbuf_size, GNUNET_NO);
+
+ /* append pm to pending_messages list */
+ GNUNET_CONTAINER_DLL_insert_tail (session->pending_messages_head,
+ session->pending_messages_tail, pm);
+ return msgbuf_size;
+ }
+ else
+ {
+ if (NULL != cont)
+ cont (cont_cls, &session->target, GNUNET_SYSERR);
+ GNUNET_break (0);
+ GNUNET_free (pm);
+ return GNUNET_SYSERR; /* session does not exist here */
+ }
}
+
struct SessionItCtx
{
- void * addr;
+ void *addr;
size_t addrlen;
- struct Session * result;
+ struct Session *result;
};
-int session_it (void *cls,
- const GNUNET_HashCode * key,
- void *value)
+
+static int
+session_lookup_it (void *cls,
+ const struct GNUNET_HashCode *key,
+ void *value)
{
struct SessionItCtx * si_ctx = cls;
struct Session * session = value;
-
- if (session->connect_alen != si_ctx->addrlen)
+#if 0
+ char * a1 = strdup (tcp_address_to_string(NULL, session->addr, session->addrlen));
+ char * a2 = strdup (tcp_address_to_string(NULL, si_ctx->addr, si_ctx->addrlen));
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Comparing: %s %u <-> %s %u\n",
+ a1,
+ session->addrlen,
+ a2,
+ si_ctx->addrlen);
+ GNUNET_free (a1);
+ GNUNET_free (a2);
+#endif
+ if (session->addrlen != si_ctx->addrlen)
+ {
return GNUNET_YES;
- if (0 != memcmp (&session->connect_addr, si_ctx->addr, si_ctx->addrlen))
+ }
+ if (0 != memcmp (session->addr, si_ctx->addr, si_ctx->addrlen))
+ {
return GNUNET_YES;
-
+ }
+#if 0
+ a1 = strdup (tcp_address_to_string(NULL, session->addr, session->addrlen));
+ a2 = strdup (tcp_address_to_string(NULL, si_ctx->addr, si_ctx->addrlen));
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Comparing: %s %u <-> %s %u , OK!\n",
+ a1,
+ session->addrlen,
+ a2,
+ si_ctx->addrlen);
+ GNUNET_free (a1);
+ GNUNET_free (a2);
+#endif
/* Found existing session */
si_ctx->result = session;
return GNUNET_NO;
}
+/**
+ * Task cleaning up a NAT connection attempt after timeout
+ */
+static void
+nat_connect_timeout (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ struct Session *session = cls;
+
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "NAT WAIT connection to `%4s' at `%s' could not be established, removing session\n",
+ GNUNET_i2s (&session->target), tcp_address_to_string(NULL, session->addr, session->addrlen));
+ disconnect_session (session);
+}
+
+
/**
* Create a new session to transmit data to the target
* This session will used to send data to this peer and the plugin will
* notify us by calling the env->session_end function
*
* @param cls closure
- * @param target the neighbour id
- * @param addr pointer to the address
- * @param addrlen length of addr
+ * @param address pointer to the GNUNET_HELLO_Address
* @return the session if the address is valid, NULL otherwise
*/
-const const struct Session * tcp_plugin_create_session (void *cls,
- const struct GNUNET_HELLO_Address *address)
+static struct Session *
+tcp_plugin_get_session (void *cls,
+ const struct GNUNET_HELLO_Address *address)
{
struct Plugin * plugin = cls;
struct Session * session = NULL;
-
int af;
const void *sb;
size_t sbs;
struct sockaddr_in6 a6;
const struct IPv4TcpAddress *t4;
const struct IPv6TcpAddress *t6;
+ struct GNUNET_ATS_Information ats;
unsigned int is_natd = GNUNET_NO;
- size_t addrlen = address->address_length;
+ size_t addrlen;
GNUNET_assert (plugin != NULL);
GNUNET_assert (address != NULL);
+ addrlen = address->address_length;
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Trying to get session for `%s' address of peer `%s'\n",
+ tcp_address_to_string(NULL, address->address, address->address_length),
+ GNUNET_i2s (&address->peer));
+
+ /* look for existing session */
+ if (GNUNET_YES ==
+ GNUNET_CONTAINER_multihashmap_contains(plugin->sessionmap, &address->peer.hashPubKey))
+ {
+ struct SessionItCtx si_ctx;
+
+ si_ctx.addr = (void *) address->address;
+ si_ctx.addrlen = address->address_length;
+
+ si_ctx.result = NULL;
+
+ GNUNET_CONTAINER_multihashmap_get_multiple(plugin->sessionmap, &address->peer.hashPubKey, &session_lookup_it, &si_ctx);
+ if (si_ctx.result != NULL)
+ {
+ session = si_ctx.result;
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Found exisiting session for `%s' address `%s' session %p\n",
+ GNUNET_i2s (&address->peer),
+ tcp_address_to_string(NULL, address->address, address->address_length),
+ session);
+ return session;
+ }
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Existing sessions did not match address `%s' or peer `%s'\n",
+ tcp_address_to_string(NULL, address->address, address->address_length),
+ GNUNET_i2s (&address->peer));
+ }
if (addrlen == sizeof (struct IPv6TcpAddress))
{
}
else
{
- GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, "tcp",
- _("Address of unexpected length: %u\n"), addrlen);
+ LOG (GNUNET_ERROR_TYPE_ERROR,
+ _("Address of unexpected length: %u\n"), addrlen);
GNUNET_break (0);
return NULL;
}
- /* look for existing session */
- if (GNUNET_CONTAINER_multihashmap_contains(plugin->sessionmap, &address->peer.hashPubKey))
- {
- struct SessionItCtx si_ctx;
- si_ctx.addr = &sbs;
- si_ctx.addrlen = sbs;
- GNUNET_CONTAINER_multihashmap_get_multiple(plugin->sessionmap, &address->peer.hashPubKey, &session_it, &si_ctx);
- if (si_ctx.result != NULL)
- session = si_ctx.result;
- return session;
- }
+ ats = plugin->env->get_address_type (plugin->env->cls, sb ,sbs);
if ((is_natd == GNUNET_YES) && (addrlen == sizeof (struct IPv6TcpAddress)))
- return NULL; /* NAT client only works with IPv4 addresses */
+ {
+ /* NAT client only works with IPv4 addresses */
+ return NULL;
+ }
if (0 == plugin->max_connections)
- return NULL; /* saturated */
+ {
+ /* saturated */
+ return NULL;
+ }
if ((is_natd == GNUNET_YES) &&
(GNUNET_YES ==
GNUNET_CONTAINER_multihashmap_contains (plugin->nat_wait_conns,
&address->peer.hashPubKey)))
- return NULL; /* Only do one NAT punch attempt per peer identity */
+ {
+ /* Only do one NAT punch attempt per peer identity */
+ return NULL;
+ }
if ((is_natd == GNUNET_YES) && (NULL != plugin->nat) &&
(GNUNET_NO ==
GNUNET_CONTAINER_multihashmap_contains (plugin->nat_wait_conns,
&address->peer.hashPubKey)))
{
-#if DEBUG_TCP_NAT
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "tcp",
- _("Found valid IPv4 NAT address (creating session)!\n"));
-#endif
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Found valid IPv4 NAT address (creating session)!\n") ;
session = create_session (plugin, &address->peer, NULL, GNUNET_YES);
+ session->addrlen = 0;
+ session->addr = NULL;
+ session->ats_address_network_type = ats.value;
+ session->nat_connection_timeout = GNUNET_SCHEDULER_add_delayed(NAT_TIMEOUT,
+ &nat_connect_timeout,
+ session);
GNUNET_assert (session != NULL);
-
GNUNET_assert (GNUNET_CONTAINER_multihashmap_put
(plugin->nat_wait_conns, &address->peer.hashPubKey, session,
GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY) == GNUNET_OK);
-#if DEBUG_TCP_NAT
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "tcp",
- "Created NAT WAIT connection to `%4s' at `%s'\n",
- GNUNET_i2s (target), GNUNET_a2s (sb, sbs));
-#endif
- GNUNET_NAT_run_client (plugin->nat, &a4);
- return session;
+
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Created NAT WAIT connection to `%4s' at `%s'\n",
+ GNUNET_i2s (&session->target), GNUNET_a2s (sb, sbs));
+
+ if (GNUNET_OK == GNUNET_NAT_run_client (plugin->nat, &a4))
+ return session;
+ else
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Running NAT client for `%4s' at `%s' failed\n",
+ GNUNET_i2s (&session->target), GNUNET_a2s (sb, sbs));
+ disconnect_session (session);
+ return NULL;
+ }
}
/* create new outbound session */
sa = GNUNET_CONNECTION_create_from_sockaddr (af, sb, sbs);
if (sa == NULL)
{
-#if DEBUG_TCP
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "tcp",
- "Failed to create connection to `%4s' at `%s'\n",
- GNUNET_i2s (target), GNUNET_a2s (sb, sbs));
-#endif
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Failed to create connection to `%4s' at `%s'\n",
+ GNUNET_i2s (&session->target), GNUNET_a2s (sb, sbs));
return NULL;
}
plugin->max_connections--;
-#if DEBUG_TCP_NAT
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "tcp",
- "Asked to transmit to `%4s', creating fresh session using address `%s'.\n",
- GNUNET_i2s (target), GNUNET_a2s (sb, sbs));
-#endif
+
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Asked to transmit to `%4s', creating fresh session using address `%s'.\n",
+ GNUNET_i2s (&address->peer), GNUNET_a2s (sb, sbs));
+
session = create_session (plugin,
&address->peer,
GNUNET_SERVER_connect_socket (plugin->server, sa),
GNUNET_NO);
- session->connect_addr = GNUNET_malloc (addrlen);
- memcpy (session->connect_addr, address->address, addrlen);
- session->connect_alen = addrlen;
- if (addrlen != 0)
- {
- struct GNUNET_ATS_Information ats;
- ats = plugin->env->get_address_type (plugin->env->cls, sb ,sbs);
- session->ats_address_network_type = ats.value;
- }
- else
- GNUNET_break (0);
+ session->addr = GNUNET_malloc (addrlen);
+ memcpy (session->addr, address->address, addrlen);
+ session->addrlen = addrlen;
+ session->ats_address_network_type = ats.value;
GNUNET_CONTAINER_multihashmap_put(plugin->sessionmap, &address->peer.hashPubKey, session, GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
-
+ inc_sessions (plugin, session, __LINE__);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Creating new session for `%s' address `%s' session %p\n",
+ GNUNET_i2s (&address->peer),
+ tcp_address_to_string(NULL, address->address, address->address_length),
+ session);
/* Send TCP Welcome */
process_pending_messages (session);
}
+static int
+session_disconnect_it (void *cls,
+ const struct GNUNET_HashCode * key,
+ void *value)
+{
+ struct Session *session = value;
+
+ GNUNET_STATISTICS_update (session->plugin->env->stats,
+ gettext_noop
+ ("# transport-service disconnect requests for TCP"),
+ 1, GNUNET_NO);
+ disconnect_session (session);
+ return GNUNET_YES;
+}
+
+
/**
* Function that can be called to force a disconnect from the
* specified neighbour. This should also cancel all previously
tcp_plugin_disconnect (void *cls, const struct GNUNET_PeerIdentity *target)
{
struct Plugin *plugin = cls;
- struct Session *session;
- struct Session *next;
- struct PendingMessage *pm;
-#if DEBUG_TCP
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "tcp",
- "Asked to cancel session with `%4s'\n", GNUNET_i2s (target));
-#endif
- next = plugin->sessions;
- while (NULL != (session = next))
- {
- next = session->next;
- if (0 !=
- memcmp (target, &session->target, sizeof (struct GNUNET_PeerIdentity)))
- continue;
- pm = session->pending_messages_head;
- while (pm != NULL)
- {
- pm->transmit_cont = NULL;
- pm->transmit_cont_cls = NULL;
- pm = pm->next;
- }
- GNUNET_STATISTICS_update (session->plugin->env->stats,
- gettext_noop
- ("# transport-service disconnect requests for TCP"),
- 1, GNUNET_NO);
- disconnect_session (session);
- }
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Disconnecting peer `%4s'\n", GNUNET_i2s (target));
+ GNUNET_CONTAINER_multihashmap_get_multiple (plugin->sessionmap, &target->hashPubKey, &session_disconnect_it, plugin);
+ GNUNET_CONTAINER_multihashmap_get_multiple (plugin->nat_wait_conns, &target->hashPubKey, &session_disconnect_it, plugin);
}
* Port to add after the IP address.
*/
uint16_t port;
+
+ int ipv6;
};
GNUNET_free (ppc);
return;
}
- GNUNET_asprintf (&ret, "%s:%d", hostname, ppc->port);
+ if (GNUNET_YES == ppc->ipv6)
+ GNUNET_asprintf (&ret, "[%s]:%d", hostname, ppc->port);
+ else
+ GNUNET_asprintf (&ret, "%s:%d", hostname, ppc->port);
ppc->asc (ppc->asc_cls, ret);
GNUNET_free (ret);
}
sb = &a4;
sbs = sizeof (a4);
}
+ else if (0 == addrlen)
+ {
+ asc (asc_cls, "<inbound connection>");
+ asc (asc_cls, NULL);
+ return;
+ }
else
{
/* invalid address */
return;
}
ppc = GNUNET_malloc (sizeof (struct PrettyPrinterContext));
+ if (addrlen == sizeof (struct IPv6TcpAddress))
+ ppc->ipv6 = GNUNET_YES;
+ else
+ ppc->ipv6 = GNUNET_NO;
ppc->asc = asc;
ppc->asc_cls = asc_cls;
ppc->port = port;
const struct sockaddr_in *s4;
const struct sockaddr_in6 *s6;
-#if DEBUG_TCP_NAT
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "tcp", "received NAT probe\n");
-#endif
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "received NAT probe\n");
+
/* We have received a TCP NAT probe, meaning we (hopefully) initiated
* a connection to this peer by running gnunet-nat-client. This peer
* received the punch message and now wants us to use the new connection
clientIdentity.hashPubKey);
if (session == NULL)
{
-#if DEBUG_TCP_NAT
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "tcp",
- "Did NOT find session for NAT probe!\n");
-#endif
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Did NOT find session for NAT probe!\n");
GNUNET_SERVER_receive_done (client, GNUNET_OK);
return;
}
-#if DEBUG_TCP_NAT
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "tcp",
- "Found session for NAT probe!\n");
-#endif
- GNUNET_assert (GNUNET_CONTAINER_multihashmap_remove
- (plugin->nat_wait_conns,
- &tcp_nat_probe->clientIdentity.hashPubKey,
- session) == GNUNET_YES);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Found session for NAT probe!\n");
+
+ if (session->nat_connection_timeout != GNUNET_SCHEDULER_NO_TASK)
+ {
+ GNUNET_SCHEDULER_cancel (session->nat_connection_timeout);
+ session->nat_connection_timeout = GNUNET_SCHEDULER_NO_TASK;
+ }
+
if (GNUNET_OK != GNUNET_SERVER_client_get_address (client, &vaddr, &alen))
{
GNUNET_break (0);
- GNUNET_free (session);
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
+ GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+ disconnect_session (session);
return;
}
-
- GNUNET_SERVER_client_keep (client);
- session->client = client;
+ GNUNET_assert (GNUNET_CONTAINER_multihashmap_remove
+ (plugin->nat_wait_conns,
+ &tcp_nat_probe->clientIdentity.hashPubKey,
+ session) == GNUNET_YES);
+ GNUNET_CONTAINER_multihashmap_put(plugin->sessionmap,
+ &session->target.hashPubKey, session,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
session->last_activity = GNUNET_TIME_absolute_get ();
session->inbound = GNUNET_NO;
-
-#if DEBUG_TCP_NAT
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "tcp",
- "Found address `%s' for incoming connection\n",
- GNUNET_a2s (vaddr, alen));
-#endif
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Found address `%s' for incoming connection\n",
+ GNUNET_a2s (vaddr, alen));
switch (((const struct sockaddr *) vaddr)->sa_family)
{
case AF_INET:
t4 = GNUNET_malloc (sizeof (struct IPv4TcpAddress));
t4->t4_port = s4->sin_port;
t4->ipv4_addr = s4->sin_addr.s_addr;
- session->connect_addr = t4;
- session->connect_alen = sizeof (struct IPv4TcpAddress);
+ session->addr = t4;
+ session->addrlen = sizeof (struct IPv4TcpAddress);
break;
case AF_INET6:
s6 = vaddr;
t6 = GNUNET_malloc (sizeof (struct IPv6TcpAddress));
t6->t6_port = s6->sin6_port;
memcpy (&t6->ipv6_addr, &s6->sin6_addr, sizeof (struct in6_addr));
- session->connect_addr = t6;
- session->connect_alen = sizeof (struct IPv6TcpAddress);
+ session->addr = t6;
+ session->addrlen = sizeof (struct IPv6TcpAddress);
break;
default:
GNUNET_break_op (0);
-#if DEBUG_TCP_NAT
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "tcp",
- "Bad address for incoming connection!\n");
-#endif
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Bad address for incoming connection!\n");
GNUNET_free (vaddr);
- GNUNET_SERVER_client_drop (client);
- GNUNET_free (session);
GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+ disconnect_session (session);
return;
}
GNUNET_free (vaddr);
-
- session->next = plugin->sessions;
- plugin->sessions = session;
+ GNUNET_break (NULL == session->client);
+ GNUNET_SERVER_client_keep (client);
+ session->client = client;
+ inc_sessions (plugin, session, __LINE__);
GNUNET_STATISTICS_update (plugin->env->stats,
gettext_noop ("# TCP sessions active"), 1,
GNUNET_NO);
GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
return;
}
-#if DEBUG_TCP
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "tcp",
- "Received %s message from `%4s'.\n", "WELCOME",
- GNUNET_i2s (&wm->clientIdentity));
-#endif
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Received %s message from `%4s'\n", "WELCOME",
+ GNUNET_i2s (&wm->clientIdentity));
GNUNET_STATISTICS_update (plugin->env->stats,
gettext_noop ("# TCP WELCOME messages received"), 1,
GNUNET_NO);
- session = find_session_by_client (plugin, client);
-
- if (session == NULL)
+ session = lookup_session_by_client (plugin, client);
+ if (session != NULL)
+ {
+ if (GNUNET_OK == GNUNET_SERVER_client_get_address (client, &vaddr, &alen))
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Found existing session %p for peer `%s'\n",
+ session,
+ GNUNET_a2s (vaddr, alen));
+ GNUNET_free (vaddr);
+ }
+ }
+ else
{
-#if DEBUG_TCP_NAT
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "tcp",
- "Received %s message from a `%4s', creating new session\n",
- "WELCOME", GNUNET_i2s (&wm->clientIdentity));
-#endif
GNUNET_SERVER_client_keep (client);
session = create_session (plugin, &wm->clientIdentity, client, GNUNET_NO);
session->inbound = GNUNET_YES;
if (GNUNET_OK == GNUNET_SERVER_client_get_address (client, &vaddr, &alen))
{
-#if DEBUG_TCP_NAT
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "tcp",
- "Found address `%s' for incoming connection\n",
- GNUNET_a2s (vaddr, alen));
-#endif
-
if (alen == sizeof (struct sockaddr_in))
{
s4 = vaddr;
t4 = GNUNET_malloc (sizeof (struct IPv4TcpAddress));
t4->t4_port = s4->sin_port;
t4->ipv4_addr = s4->sin_addr.s_addr;
- session->connect_addr = t4;
- session->connect_alen = sizeof (struct IPv4TcpAddress);
+ session->addr = t4;
+ session->addrlen = sizeof (struct IPv4TcpAddress);
}
else if (alen == sizeof (struct sockaddr_in6))
{
t6 = GNUNET_malloc (sizeof (struct IPv6TcpAddress));
t6->t6_port = s6->sin6_port;
memcpy (&t6->ipv6_addr, &s6->sin6_addr, sizeof (struct in6_addr));
- session->connect_addr = t6;
- session->connect_alen = sizeof (struct IPv6TcpAddress);
+ session->addr = t6;
+ session->addrlen = sizeof (struct IPv6TcpAddress);
}
struct GNUNET_ATS_Information ats;
}
else
{
-#if DEBUG_TCP
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "tcp",
- "Did not obtain TCP socket address for incoming connection\n");
-#endif
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Did not obtain TCP socket address for incoming connection\n");
}
- process_pending_messages (session);
- }
- else
- {
-#if DEBUG_TCP_NAT
- if (GNUNET_OK == GNUNET_SERVER_client_get_address (client, &vaddr, &alen))
- {
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "tcp",
- "Found address `%s' (already have session)\n",
- GNUNET_a2s (vaddr, alen));
- GNUNET_free (vaddr);
- }
-#endif
+ GNUNET_CONTAINER_multihashmap_put(plugin->sessionmap, &wm->clientIdentity.hashPubKey, session, GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
+ inc_sessions (plugin, session, __LINE__);
}
if (session->expecting_welcome != GNUNET_YES)
}
session->last_activity = GNUNET_TIME_absolute_get ();
session->expecting_welcome = GNUNET_NO;
+
+
+ process_pending_messages (session);
+
GNUNET_SERVER_client_set_timeout (client,
GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT);
GNUNET_SERVER_receive_done (client, GNUNET_OK);
session->plugin->env->receive (session->plugin->env->cls,
&session->target, NULL, &ats, 0, session,
NULL, 0);
+ reschedule_session_timeout (session);
+
if (delay.rel_value == 0)
GNUNET_SERVER_receive_done (session->client, GNUNET_OK);
else
GNUNET_SERVER_receive_done (client, GNUNET_OK);
return;
}
- session = find_session_by_client (plugin, client);
- if ((NULL == session) || (GNUNET_YES == session->expecting_welcome))
+ session = lookup_session_by_client (plugin, client);
+ if (NULL == session)
{
+ /* No inbound session found */
+ void *vaddr;
+ size_t alen;
+
+ GNUNET_SERVER_client_get_address (client, &vaddr, &alen);
+ LOG (GNUNET_ERROR_TYPE_ERROR,
+ "Received unexpected %u bytes of type %u from `%s'\n",
+ (unsigned int) ntohs (message->size),
+ (unsigned int) ntohs (message->type),
+ GNUNET_a2s(vaddr, alen));
+ GNUNET_break_op (0);
GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+ GNUNET_free_non_null(vaddr);
return;
}
+ else if (GNUNET_YES == session->expecting_welcome)
+ {
+ /* Session is expecting WELCOME message */
+ void *vaddr;
+ size_t alen;
+
+ GNUNET_SERVER_client_get_address (client, &vaddr, &alen);
+ LOG (GNUNET_ERROR_TYPE_ERROR,
+ "Received unexpected %u bytes of type %u from `%s'\n",
+ (unsigned int) ntohs (message->size),
+ (unsigned int) ntohs (message->type),
+ GNUNET_a2s(vaddr, alen));
+ GNUNET_break_op (0);
+ GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+ GNUNET_free_non_null(vaddr);
+ return;
+ }
+
session->last_activity = GNUNET_TIME_absolute_get ();
-#if DEBUG_TCP
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "tcp",
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
"Passing %u bytes of type %u from `%4s' to transport service.\n",
(unsigned int) ntohs (message->size),
(unsigned int) ntohs (message->type),
GNUNET_i2s (&session->target));
-#endif
+
GNUNET_STATISTICS_update (plugin->env->stats,
gettext_noop ("# bytes received via TCP"),
ntohs (message->size), GNUNET_NO);
distance[1].value = session->ats_address_network_type;
GNUNET_break (ntohl(session->ats_address_network_type) != GNUNET_ATS_NET_UNSPECIFIED);
- delay =
- plugin->env->receive (plugin->env->cls, &session->target, message,
- (const struct GNUNET_ATS_Information *) &distance,
- 1, session,
- (GNUNET_YES ==
- session->inbound) ? NULL : session->connect_addr,
- (GNUNET_YES ==
- session->inbound) ? 0 : session->connect_alen);
+ GNUNET_assert (GNUNET_CONTAINER_multihashmap_contains_value (plugin->sessionmap,
+ &session->target.hashPubKey,
+ session));
+
+ delay = plugin->env->receive (plugin->env->cls,
+ &session->target,
+ message,
+ (const struct GNUNET_ATS_Information *) &distance,
+ 1, session,
+ (GNUNET_YES == session->inbound) ? NULL : session->addr,
+ (GNUNET_YES == session->inbound) ? 0 : session->addrlen);
+
+ reschedule_session_timeout (session);
+
if (delay.rel_value == 0)
{
GNUNET_SERVER_receive_done (client, GNUNET_OK);
}
else
{
-#if DEBUG_TCP
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "tcp",
- "Throttling receiving from `%s' for %llu ms\n",
- GNUNET_i2s (&session->target),
- (unsigned long long) delay.rel_value);
-#endif
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Throttling receiving from `%s' for %llu ms\n",
+ GNUNET_i2s (&session->target),
+ (unsigned long long) delay.rel_value);
GNUNET_SERVER_disable_receive_done_warning (client);
session->receive_delay_task =
GNUNET_SCHEDULER_add_delayed (delay, &delayed_done, session);
if (client == NULL)
return;
plugin->max_connections++;
- session = find_session_by_client (plugin, client);
+ session = lookup_session_by_client (plugin, client);
if (session == NULL)
return; /* unknown, nothing to do */
-#if DEBUG_TCP
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "tcp",
- "Destroying session of `%4s' with %s due to network-level disconnect.\n",
- GNUNET_i2s (&session->target),
- (session->connect_addr !=
- NULL) ? tcp_address_to_string (session->plugin,
- session->connect_addr,
- session->connect_alen) :
- "*");
-#endif
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Destroying session of `%4s' with %s due to network-level disconnect.\n",
+ GNUNET_i2s (&session->target),
+ (session->addr !=
+ NULL) ? tcp_address_to_string (session->plugin,
+ session->addr,
+ session->addrlen) :
+ "*");
GNUNET_STATISTICS_update (session->plugin->env->stats,
gettext_noop
("# network-level TCP disconnect events"), 1,
tcp_probe_ctx);
if (buf == NULL)
{
- GNUNET_CONNECTION_destroy (tcp_probe_ctx->sock, GNUNET_NO);
+ GNUNET_CONNECTION_destroy (tcp_probe_ctx->sock);
GNUNET_free (tcp_probe_ctx);
return 0;
}
}
+/**
+ * Session was idle, so disconnect it
+ */
+static void
+session_timeout (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ GNUNET_assert (NULL != cls);
+ struct Session *s = cls;
+
+ s->timeout_task = GNUNET_SCHEDULER_NO_TASK;
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Session %p was idle for %llu, disconnecting\n",
+ s, GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value);
+ /* call session destroy function */
+ disconnect_session(s);
+}
+
+
+/**
+ * Start session timeout
+ */
+static void
+start_session_timeout (struct Session *s)
+{
+ GNUNET_assert (NULL != s);
+ GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == s->timeout_task);
+ s->timeout_task = GNUNET_SCHEDULER_add_delayed (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT,
+ &session_timeout,
+ s);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Timeout for session %p set to %llu\n",
+ s,
+ GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value);
+}
+
+
+/**
+ * Increment session timeout due to activity
+ */
+static void
+reschedule_session_timeout (struct Session *s)
+{
+ GNUNET_assert (NULL != s);
+ if (GNUNET_SCHEDULER_NO_TASK == s->timeout_task)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Timeout for peer `%s' %s not scheduled\n",
+ GNUNET_i2s (&s->target),
+ tcp_address_to_string(NULL, s->addr, s->addrlen));
+ return;
+ }
+ GNUNET_SCHEDULER_cancel (s->timeout_task);
+ s->timeout_task = GNUNET_SCHEDULER_add_delayed (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT,
+ &session_timeout,
+ s);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Timeout rescheduled for session %p set to %llu\n",
+ s,
+ (unsigned long long) GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value);
+}
+
+
+/**
+ * Cancel timeout
+ */
+static void
+stop_session_timeout (struct Session *s)
+{
+ GNUNET_assert (NULL != s);
+ if (GNUNET_SCHEDULER_NO_TASK != s->timeout_task)
+ {
+ GNUNET_SCHEDULER_cancel (s->timeout_task);
+ s->timeout_task = GNUNET_SCHEDULER_NO_TASK;
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Timeout rescheduled for session %p canceled\n",
+ s, GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value);
+ }
+ else
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Timeout for session %p was not active\n",
+ s);
+ }
+}
+
+
/**
* Entry point for the plugin.
*
struct sockaddr **addrs;
socklen_t *addrlens;
+ if (NULL == env->receive)
+ {
+ /* run in 'stub' mode (i.e. as part of gnunet-peerinfo), don't fully
+ initialze the plugin or the API */
+ api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
+ api->cls = NULL;
+ api->address_pretty_printer = &tcp_plugin_address_pretty_printer;
+ api->address_to_string = &tcp_address_to_string;
+ api->string_to_address = &tcp_string_to_address;
+ return api;
+ }
+
if (GNUNET_OK !=
GNUNET_CONFIGURATION_get_value_number (env->cfg, "transport-tcp",
"MAX_CONNECTIONS",
"ADVERTISED-PORT", &aport)) &&
(aport > 65535)))
{
- GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, "tcp",
- _
- ("Require valid port number for service `%s' in configuration!\n"),
- "transport-tcp");
+ LOG (GNUNET_ERROR_TYPE_ERROR,
+ _
+ ("Require valid port number for service `%s' in configuration!\n"),
+ "transport-tcp");
return NULL;
}
if (aport == 0)
aport = 0;
if (bport != 0)
{
- service = GNUNET_SERVICE_start ("transport-tcp", env->cfg);
+ service = GNUNET_SERVICE_start ("transport-tcp", env->cfg, GNUNET_SERVICE_OPTION_NONE);
if (service == NULL)
{
- GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, "tcp",
- _("Failed to start service.\n"));
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ _("Failed to start service.\n"));
return NULL;
}
}
else
service = NULL;
-
-
plugin = GNUNET_malloc (sizeof (struct Plugin));
plugin->sessionmap = GNUNET_CONTAINER_multihashmap_create(max_connections);
plugin->max_connections = max_connections;
api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
api->cls = plugin;
api->send = &tcp_plugin_send;
-
- api->send_with_session = &tcp_plugin_send_new;
- api->get_session = &tcp_plugin_create_session;
+ api->get_session = &tcp_plugin_get_session;
api->disconnect = &tcp_plugin_disconnect;
api->address_pretty_printer = &tcp_plugin_address_pretty_printer;
api->check_address = &tcp_plugin_check_address;
api->address_to_string = &tcp_address_to_string;
+ api->string_to_address = &tcp_string_to_address;
plugin->service = service;
if (service != NULL)
{
GNUNET_CONFIGURATION_get_value_time (env->cfg, "transport-tcp",
"TIMEOUT", &idle_timeout))
{
- GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, "tcp",
- _("Failed to find option %s in section %s!\n"),
- "TIMEOUT", "transport-tcp");
+ LOG (GNUNET_ERROR_TYPE_ERROR,
+ _("Failed to find option %s in section %s!\n"),
+ "TIMEOUT", "transport-tcp");
if (plugin->nat != NULL)
GNUNET_NAT_unregister (plugin->nat);
GNUNET_free (plugin);
GNUNET_SERVER_disconnect_notify (plugin->server, &disconnect_notify, plugin);
plugin->nat_wait_conns = GNUNET_CONTAINER_multihashmap_create (16);
if (bport != 0)
- GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, "tcp",
- _("TCP transport listening on port %llu\n"), bport);
+ LOG (GNUNET_ERROR_TYPE_INFO,
+ _("TCP transport listening on port %llu\n"), bport);
else
- GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, "tcp",
- _
- ("TCP transport not listening on any port (client only)\n"));
+ LOG (GNUNET_ERROR_TYPE_INFO,
+ _
+ ("TCP transport not listening on any port (client only)\n"));
if (aport != bport)
- GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, "tcp",
+ LOG (GNUNET_ERROR_TYPE_INFO,
_
("TCP transport advertises itself as being on port %llu\n"),
aport);
+ /* Initially set connections to 0 */
+ GNUNET_STATISTICS_set(plugin->env->stats,
+ gettext_noop ("# TCP sessions active"), 0,
+ GNUNET_NO);
return api;
}
{
struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
struct Plugin *plugin = api->cls;
- struct Session *session;
struct TCPProbeContext *tcp_probe;
- while (NULL != (session = plugin->sessions))
- disconnect_session (session);
+ if (NULL == plugin)
+ {
+ GNUNET_free (api);
+ return NULL;
+ }
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "Shutting down TCP plugin\n");
+
+ /* Removing leftover sessions */
+ GNUNET_CONTAINER_multihashmap_iterate(plugin->sessionmap, &session_disconnect_it, NULL);
+ /* Removing leftover NAT sessions */
+ GNUNET_CONTAINER_multihashmap_iterate(plugin->nat_wait_conns, &session_disconnect_it, NULL);
+
if (plugin->service != NULL)
GNUNET_SERVICE_stop (plugin->service);
else
{
GNUNET_CONTAINER_DLL_remove (plugin->probe_head, plugin->probe_tail,
tcp_probe);
- GNUNET_CONNECTION_destroy (tcp_probe->sock, GNUNET_NO);
+ GNUNET_CONNECTION_destroy (tcp_probe->sock);
GNUNET_free (tcp_probe);
}
GNUNET_CONTAINER_multihashmap_destroy (plugin->nat_wait_conns);
projects / oweals / gnunet.git / blobdiff