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Diffstat (limited to 'src/transport/plugin_transport_udp.c')
-rw-r--r--src/transport/plugin_transport_udp.c732
1 files changed, 372 insertions, 360 deletions
diff --git a/src/transport/plugin_transport_udp.c b/src/transport/plugin_transport_udp.c
index 0589a24bd..dba8de2cb 100644
--- a/src/transport/plugin_transport_udp.c
+++ b/src/transport/plugin_transport_udp.c
@@ -1,6 +1,6 @@
/*
This file is part of GNUnet
- (C) 2010-2014 Christian Grothoff (and other contributing authors)
+ (C) 2010-2015 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
@@ -102,10 +102,10 @@ struct PrettyPrinterContext
/**
* Timeout task
*/
- struct GNUNET_SCHEDULER_Task * timeout_task;
+ struct GNUNET_SCHEDULER_Task *timeout_task;
/**
- * IPv6 address
+ * Is this an IPv6 address?
*/
int ipv6;
@@ -155,7 +155,7 @@ struct Session
/**
* Session timeout task
*/
- struct GNUNET_SCHEDULER_Task * timeout_task;
+ struct GNUNET_SCHEDULER_Task *timeout_task;
/**
* When does this session time out?
@@ -222,20 +222,10 @@ struct SourceInformation
struct GNUNET_PeerIdentity sender;
/**
- * Source address.
- */
- const void *arg;
-
- /**
* Associated session.
*/
struct Session *session;
- /**
- * Number of bytes in source address.
- */
- size_t args;
-
};
/**
@@ -249,19 +239,19 @@ struct FindReceiveContext
struct DefragContext *rc;
/**
- * Address to find.
+ * Session associated with this context.
*/
- const struct sockaddr *addr;
+ struct Session *session;
/**
- *
+ * Address to find.
*/
- struct Session *session;
+ const union UdpAddress *udp_addr;
/**
- * Number of bytes in @e addr.
+ * Number of bytes in @e udp_addr.
*/
- socklen_t addr_len;
+ size_t udp_addr_len;
};
@@ -278,25 +268,42 @@ struct DefragContext
struct GNUNET_DEFRAGMENT_Context *defrag;
/**
+ * Reference to master plugin struct.
+ */
+ struct Plugin *plugin;
+
+ /**
+ * Node in the defrag heap.
+ */
+ struct GNUNET_CONTAINER_HeapNode *hnode;
+
+ /**
+ * Who's message(s) are we defragmenting here?
+ * Only initialized once we succeeded and
+ * @e have_sender is set.
+ */
+ struct GNUNET_PeerIdentity sender;
+
+ /**
* Source address this receive context is for (allocated at the
* end of the struct).
*/
- const struct sockaddr *src_addr;
+ const union UdpAddress *udp_addr;
/**
- * 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_ATS_Network_Type network_type;
/**
- * Length of @e src_addr.
+ * Has the @e sender field been initialized yet?
*/
- size_t addr_len;
+ int have_sender;
};
@@ -464,7 +471,7 @@ struct UDP_MessageWrapper
/**
- * UDP ACK Message-Packet header (after defragmentation).
+ * UDP ACK Message-Packet header.
*/
struct UDP_ACK_Message
{
@@ -606,8 +613,8 @@ schedule_select (struct Plugin *plugin)
* to override the address again.
*
* @param cls closure
- * @param addr binary address
- * @param addrlen length of the address
+ * @param addr binary address (a `union UdpAddress`)
+ * @param addrlen length of the @a addr
* @return string representing the same address
*/
const char *
@@ -651,8 +658,13 @@ udp_address_to_string (void *cls,
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);
+ (af == AF_INET6)
+ ? "%s.%u.[%s]:%u"
+ : "%s.%u.%s:%u",
+ PLUGIN_NAME,
+ options,
+ buf,
+ port);
return rbuf;
}
@@ -661,7 +673,7 @@ udp_address_to_string (void *cls,
* Function called to convert a string address to
* a binary address.
*
- * @param cls closure ('struct Plugin*')
+ * @param cls closure (`struct Plugin *`)
* @param addr string address
* @param addrlen length of the address
* @param buf location to store the buffer
@@ -822,7 +834,8 @@ append_port (void *cls,
* @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?
@@ -1095,7 +1108,7 @@ check_port (struct Plugin *plugin,
* traffic.
*
* @param cls closure, should be our handle to the Plugin
- * @param addr pointer to the address
+ * @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
@@ -1285,7 +1298,7 @@ fragmented_message_done (struct UDP_FragmentationContext *fc,
*
* @param cls the `struct FindReceiveContext`
* @param node internal node of the heap
- * @param element value stored at the node (a 'struct ReceiveContext')
+ * @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.
@@ -1299,8 +1312,10 @@ find_receive_context (void *cls,
struct FindReceiveContext *frc = cls;
struct DefragContext *e = element;
- if ((frc->addr_len == e->addr_len)
- && (0 == memcmp (frc->addr, e->src_addr, frc->addr_len)))
+ if ( (frc->udp_addr_len == e->udp_addr_len) &&
+ (0 == memcmp (frc->udp_addr,
+ e->udp_addr,
+ frc->udp_addr_len)) )
{
frc->rc = e;
return GNUNET_NO;
@@ -1328,12 +1343,12 @@ udp_disconnect_session (void *cls,
struct FindReceiveContext frc;
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));
+ 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)
{
@@ -1343,12 +1358,13 @@ udp_disconnect_session (void *cls,
if (NULL != s->frag_ctx)
{
/* Remove fragmented message due to disconnect */
- fragmented_message_done (s->frag_ctx, GNUNET_SYSERR);
+ fragmented_message_done (s->frag_ctx,
+ GNUNET_SYSERR);
}
frc.rc = NULL;
- frc.addr = s->address->address;
- frc.addr_len = s->address->address_length;
+ 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)
{
@@ -1555,8 +1571,8 @@ create_session (struct Plugin *plugin,
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_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;
@@ -1634,20 +1650,21 @@ session_cmp_it (void *cls,
/**
- * Creates a new outbound session the transport service will use to
- * send data to the peer
+ * 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 the plugin
- * @param address the address
- * @return the session or NULL of max connections exceeded
+ * @param address the address we should locate the session by
+ * @return the session if it exists, or NULL if it is not found
*/
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 Plugin *plugin = cls;
+ const struct IPv6UdpAddress *udp_a6;
+ const struct IPv4UdpAddress *udp_a4;
struct SessionCompareContext cctx;
if ( (NULL == address->address) ||
@@ -1655,7 +1672,7 @@ udp_plugin_lookup_session (void *cls,
(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"),
+ _("Trying to locate session for address of unexpected length %u (should be %u or %u)\n"),
address->address_length,
sizeof (struct IPv4UdpAddress),
sizeof (struct IPv6UdpAddress));
@@ -1664,19 +1681,19 @@ udp_plugin_lookup_session (void *cls,
if (address->address_length == sizeof(struct IPv4UdpAddress))
{
- if (plugin->sockv4 == NULL)
+ if (NULL == plugin->sockv4)
return NULL;
- udp_a4 = (struct IPv4UdpAddress *) address->address;
- if (udp_a4->u4_port == 0)
+ udp_a4 = (const struct IPv4UdpAddress *) address->address;
+ if (0 == udp_a4->u4_port)
return NULL;
}
if (address->address_length == sizeof(struct IPv6UdpAddress))
{
- if (plugin->sockv6 == NULL)
+ if (NULL == plugin->sockv6)
return NULL;
- udp_a6 = (struct IPv6UdpAddress *) address->address;
- if (udp_a6->u6_port == 0)
+ udp_a6 = (const struct IPv6UdpAddress *) address->address;
+ if (0 == udp_a6->u6_port)
return NULL;
}
@@ -1689,7 +1706,7 @@ udp_plugin_lookup_session (void *cls,
udp_address_to_string(NULL, address->address, address->address_length));
GNUNET_CONTAINER_multipeermap_get_multiple (plugin->sessions,
&address->peer,
- session_cmp_it,
+ &session_cmp_it,
&cctx);
if (NULL != cctx.res)
{
@@ -1703,144 +1720,37 @@ udp_plugin_lookup_session (void *cls,
/**
- * Context to lookup a session based on a IP address
- */
-struct LookupContext
-{
- /**
- * The result
- */
- struct Session *res;
-
- /**
- * The socket address
- */
- const struct sockaddr *address;
-
- /**
- * The socket address length
- */
- size_t addr_len;
-
- /**
- * Is a fragmentation context required for the session
- */
- int must_have_frag_ctx;
-};
-
-
-/**
- * Find a session with a matching address.
- * FIXME: very similar code to #udp_plugin_lookup_session() above.
- * Unify?
+ * 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 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 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 int
-lookup_session_by_sockaddr_it (void *cls,
- const struct GNUNET_PeerIdentity *key,
- void *value)
-{
- 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;
-
- /* Does not compare peer identities but addresses */
- if ((args == s->address->address_length) &&
- (0 == memcmp (arg, s->address->address, args)))
- {
- l_ctx->res = s;
- return GNUNET_NO;
- }
- return GNUNET_YES;
-}
-
-
static struct Session *
udp_plugin_create_session (void *cls,
- const struct GNUNET_HELLO_Address *address)
+ const struct GNUNET_HELLO_Address *address,
+ enum GNUNET_ATS_Network_Type network_type)
{
struct Plugin *plugin = cls;
struct Session *s;
- struct IPv4UdpAddress *udp_v4;
- struct IPv6UdpAddress *udp_v6;
s = create_session (plugin, address);
- if (sizeof (struct IPv4UdpAddress) == address->address_length)
- {
- 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.type = htonl (GNUNET_ATS_NETWORK_TYPE);
- s->ats.value = htonl (plugin->env->get_address_type (plugin->env->cls,
- (const struct sockaddr *) &v4,
- sizeof (v4)));
- }
- else if (sizeof (struct IPv6UdpAddress) == address->address_length)
- {
- 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.type = htonl (GNUNET_ATS_NETWORK_TYPE);
- s->ats.value = htonl (plugin->env->get_address_type (plugin->env->cls,
- (const struct sockaddr *) &v6,
- sizeof (v6)));
- }
+ s->ats.type = htonl (GNUNET_ATS_NETWORK_TYPE);
+ s->ats.value = htonl (network_type);
if (NULL == s)
return NULL; /* protocol not supported or address invalid */
- LOG(GNUNET_ERROR_TYPE_DEBUG,
- "Creating new session %p for peer `%s' address `%s'\n",
- s, GNUNET_i2s (&address->peer),
- udp_address_to_string( NULL,address->address,address->address_length));
+ 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,
@@ -1884,8 +1794,8 @@ udp_plugin_update_session_timeout (void *cls,
/**
- * Creates a new outbound session the transport service will use to send data to the
- * peer
+ * Creates a new outbound session the transport service will use to
+ * send data to the peer.
*
* @param cls the plugin
* @param address the address
@@ -1895,7 +1805,11 @@ static struct Session *
udp_plugin_get_session (void *cls,
const struct GNUNET_HELLO_Address *address)
{
+ struct Plugin *plugin = cls;
struct Session *s;
+ enum GNUNET_ATS_Network_Type network_type;
+ struct IPv4UdpAddress *udp_v4;
+ struct IPv6UdpAddress *udp_v6;
if (NULL == address)
{
@@ -1905,11 +1819,45 @@ udp_plugin_get_session (void *cls,
if ( (address->address_length != sizeof(struct IPv4UdpAddress)) &&
(address->address_length != sizeof(struct IPv6UdpAddress)) )
return NULL;
+ if (NULL != (s = udp_plugin_lookup_session (cls,
+ address)))
+ return s;
+
+ if (sizeof (struct IPv4UdpAddress) == address->address_length)
+ {
+ 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;
+ network_type = plugin->env->get_address_type (plugin->env->cls,
+ (const struct sockaddr *) &v4,
+ sizeof (v4));
+ }
+ else if (sizeof (struct IPv6UdpAddress) == address->address_length)
+ {
+ 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;
+ network_type = plugin->env->get_address_type (plugin->env->cls,
+ (const struct sockaddr *) &v6,
+ sizeof (v6));
+ }
/* otherwise create new */
- if (NULL != (s = udp_plugin_lookup_session (cls, address)))
- return s;
- return udp_plugin_create_session (cls, address);
+ return udp_plugin_create_session (cls, address, network_type);
}
@@ -2258,7 +2206,7 @@ process_inbound_tokenized_messages (void *cls,
struct SourceInformation *si = client;
struct GNUNET_TIME_Relative delay;
- GNUNET_assert(si->session != NULL);
+ GNUNET_assert (NULL != si->session);
if (GNUNET_YES == si->session->in_destroy)
return GNUNET_OK;
/* setup ATS */
@@ -2282,22 +2230,20 @@ process_inbound_tokenized_messages (void *cls,
*
* @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_ATS_Network_Type network_type)
{
struct SourceInformation si;
- struct Session * s;
+ struct Session *s;
struct GNUNET_HELLO_Address *address;
- struct IPv4UdpAddress u4;
- struct IPv6UdpAddress u6;
- const void *arg;
- size_t args;
if (0 != ntohl (msg->reserved))
{
@@ -2311,42 +2257,16 @@ process_udp_message (struct Plugin *plugin,
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,
+ 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);
+ s = udp_plugin_create_session (plugin,
+ address,
+ network_type);
plugin->env->session_start (plugin->env->cls,
address, s, NULL, 0);
notify_session_monitor (s->plugin,
@@ -2361,8 +2281,6 @@ process_udp_message (struct Plugin *plugin,
/* 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,
@@ -2387,6 +2305,7 @@ fragment_msg_proc (void *cls,
const struct GNUNET_MessageHeader *msg)
{
struct DefragContext *rc = cls;
+ const struct UDPMessage *um;
if (ntohs (msg->type) != GNUNET_MESSAGE_TYPE_TRANSPORT_UDP_MESSAGE)
{
@@ -2398,10 +2317,14 @@ fragment_msg_proc (void *cls,
GNUNET_break(0);
return;
}
+ um = (const struct UDPMessage *) msg;
+ rc->sender = um->sender;
+ rc->have_sender = GNUNET_YES;
process_udp_message (rc->plugin,
- (const struct UDPMessage *) msg,
- rc->src_addr,
- rc->addr_len);
+ um,
+ rc->udp_addr,
+ rc->udp_addr_len,
+ rc->network_type);
}
@@ -2423,26 +2346,32 @@ ack_proc (void *cls,
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;
+ struct GNUNET_HELLO_Address *address;
+
+ if (GNUNET_NO == rc->have_sender)
+ {
+ /* tried to defragment but never succeeded, hence will not ACK */
+ GNUNET_break_op (0);
+ return;
+ }
+ 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 (rc->plugin,
+ address);
+ GNUNET_HELLO_address_free (address);
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));
-
+ "Trying to transmit ACK to peer `%s' but no session found!\n",
+ udp_address_to_string (rc->plugin,
+ rc->udp_addr,
+ rc->udp_addr_len));
GNUNET_CONTAINER_heap_remove_node (rc->hnode);
GNUNET_DEFRAGMENT_context_destroy (rc->defrag);
GNUNET_free (rc);
-
return;
}
if (s->flow_delay_for_other_peer.rel_value_us <= UINT32_MAX)
@@ -2450,7 +2379,9 @@ ack_proc (void *cls,
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)),
+ udp_address_to_string (rc->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);
@@ -2475,38 +2406,22 @@ ack_proc (void *cls,
/**
- * 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))
- {
- GNUNET_break_op(0);
- return;
- }
- process_udp_message (plugin,
- (const struct UDPMessage *) msg,
- addr,
- fromlen);
-}
-
-
-/**
- * FIXME.
+ * Handle an ACK message.
+ *
+ * @param plugin the UDP plugin
+ * @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
read_process_ack (struct Plugin *plugin,
const struct GNUNET_MessageHeader *msg,
- const struct sockaddr *addr,
- socklen_t fromlen)
+ const union UdpAddress *udp_addr,
+ socklen_t udp_addr_len)
{
const struct GNUNET_MessageHeader *ack;
const struct UDP_ACK_Message *udp_ack;
- struct LookupContext l_ctx;
+ struct GNUNET_HELLO_Address *address;
struct Session *s;
struct GNUNET_TIME_Relative flow_delay;
@@ -2517,23 +2432,27 @@ read_process_ack (struct Plugin *plugin,
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))
+ 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);
+ GNUNET_HELLO_address_free (address);
+ if ( (NULL == s) ||
+ (NULL == s->frag_ctx) )
{
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ "UDP session for ACK not found\n");
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));
+ 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);
ack = (const struct GNUNET_MessageHeader *) &udp_ack[1];
@@ -2543,92 +2462,120 @@ read_process_ack (struct Plugin *plugin,
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))
+ if (GNUNET_OK !=
+ GNUNET_FRAGMENT_process_ack (s->frag_ctx->frag,
+ ack))
{
LOG(GNUNET_ERROR_TYPE_DEBUG,
"UDP processes %u-byte acknowledgement from `%s' at `%s'\n",
- (unsigned int ) ntohs (msg->size), GNUNET_i2s (&udp_ack->sender),
- GNUNET_a2s (addr, fromlen));
+ (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;
}
- LOG(GNUNET_ERROR_TYPE_DEBUG, "Message full ACK'ed\n",
- (unsigned int ) ntohs (msg->size), GNUNET_i2s (&udp_ack->sender),
- GNUNET_a2s (addr, fromlen));
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Message full ACK'ed\n",
+ (unsigned int ) ntohs (msg->size),
+ GNUNET_i2s (&udp_ack->sender),
+ udp_address_to_string (plugin,
+ udp_addr,
+ udp_addr_len));
+
/* Remove fragmented message after successful sending */
- fragmented_message_done (s->frag_ctx, GNUNET_OK);
+ fragmented_message_done (s->frag_ctx,
+ GNUNET_OK);
}
/**
- * 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_ATS_Network_Type 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);
+ 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,
+ 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));
+ 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_heap_update_cost (plugin->defrag_ctxs,
+ 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);
}
}
@@ -2648,11 +2595,20 @@ udp_select_read (struct Plugin *plugin,
char buf[65536] GNUNET_ALIGN;
ssize_t size;
const struct GNUNET_MessageHeader *msg;
+ 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_ATS_Network_Type 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!)
@@ -2680,50 +2636,94 @@ udp_select_read (struct Plugin *plugin,
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);
return;
}
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);
+ (unsigned int) size,
+ GNUNET_a2s (sa,
+ fromlen));
+ GNUNET_break_op (0);
return;
}
GNUNET_STATISTICS_update (plugin->env->stats,
"# 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);
@@ -3008,15 +3008,21 @@ udp_select_send (struct Plugin *plugin,
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");
+ 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);
+ "# UDP, total, bytes, sent, success",
+ sent,
+ GNUNET_NO);
GNUNET_STATISTICS_update (plugin->env->stats,
- "# UDP, total, messages, sent, success", 1, GNUNET_NO);
+ "# 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);
@@ -3233,8 +3239,10 @@ setup_sockets (struct Plugin *plugin,
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)
@@ -3259,8 +3267,9 @@ setup_sockets (struct Plugin *plugin,
if (NULL != plugin->sockv4)
{
- LOG(GNUNET_ERROR_TYPE_DEBUG, "IPv4 socket created on port %s\n",
- GNUNET_a2s (server_addr, addrlen));
+ 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);
sockets_created++;
@@ -3276,7 +3285,8 @@ setup_sockets (struct Plugin *plugin,
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 */
}
@@ -3425,11 +3435,13 @@ libgnunet_plugin_transport_udp_init (void *cls)
/* 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",
+ GNUNET_CONFIGURATION_get_value_number (env->cfg,
+ "transport-udp",
"PORT", &port))
port = 2086;
if (GNUNET_OK !=
- GNUNET_CONFIGURATION_get_value_number (env->cfg, "transport-udp",
+ GNUNET_CONFIGURATION_get_value_number (env->cfg,
+ "transport-udp",
"ADVERTISED_PORT", &aport))
aport = port;
if (port > 65535)