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[GNUnet-SVN] r26007 - gnunet/src/transport
From: |
gnunet |
Subject: |
[GNUnet-SVN] r26007 - gnunet/src/transport |
Date: |
Mon, 4 Feb 2013 17:54:59 +0100 |
Author: wachs
Date: 2013-02-04 17:54:59 +0100 (Mon, 04 Feb 2013)
New Revision: 26007
Modified:
gnunet/src/transport/plugin_transport_tcp.c
Log:
limit connection for tcp
Modified: gnunet/src/transport/plugin_transport_tcp.c
===================================================================
--- gnunet/src/transport/plugin_transport_tcp.c 2013-02-04 16:06:16 UTC (rev
26006)
+++ gnunet/src/transport/plugin_transport_tcp.c 2013-02-04 16:54:59 UTC (rev
26007)
@@ -385,6 +385,11 @@
unsigned long long max_connections;
/**
+ * How many more TCP sessions do we have right now?
+ */
+ unsigned long long cur_connections;
+
+ /**
* ID of task used to update our addresses when one expires.
*/
GNUNET_SCHEDULER_TaskIdentifier address_update_task;
@@ -486,13 +491,12 @@
const struct sockaddr *addr, socklen_t addrlen)
{
struct Plugin *plugin = cls;
-
- LOG (GNUNET_ERROR_TYPE_ERROR,
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
"Accepting new incoming TCP connection from `%s'\n",
GNUNET_a2s (addr, addrlen));
- if (0 == plugin->max_connections)
+ if (plugin->cur_connections >= plugin->max_connections)
return GNUNET_NO;
- plugin->max_connections--;
+ plugin->cur_connections ++;
return GNUNET_YES;
}
@@ -1355,7 +1359,7 @@
return NULL;
}
- if (0 == plugin->max_connections)
+ if (plugin->cur_connections >= plugin->max_connections)
{
/* saturated */
return NULL;
@@ -1408,7 +1412,7 @@
}
/* create new outbound session */
- GNUNET_assert (0 != plugin->max_connections);
+ GNUNET_assert (plugin->cur_connections <= plugin->max_connections);
sa = GNUNET_CONNECTION_create_from_sockaddr (af, sb, sbs);
if (sa == NULL)
{
@@ -1417,7 +1421,9 @@
GNUNET_i2s (&address->peer), GNUNET_a2s (sb, sbs));
return NULL;
}
- plugin->max_connections--;
+ plugin->cur_connections++;
+ if (plugin->cur_connections == plugin->max_connections)
+ GNUNET_SERVER_suspend (plugin->server); /* Maximum number of
connections rechead */
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Asked to transmit to `%4s', creating fresh session using address
`%s'.\n",
@@ -1436,7 +1442,7 @@
&session->target.hashPubKey,
session,
GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
inc_sessions (plugin, session, __LINE__);
- LOG (GNUNET_ERROR_TYPE_DEBUG,
+ 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),
@@ -1875,6 +1881,11 @@
else
{
GNUNET_SERVER_client_keep (client);
+ if (plugin->service != NULL) /* Otherwise value is incremented in
tcp_access_check */
+ plugin->cur_connections++;
+ if (plugin->cur_connections == plugin->max_connections)
+ GNUNET_SERVER_suspend (plugin->server); /* Maximum number of
connections rechead */
+
session = create_session (plugin, &wm->clientIdentity, client, GNUNET_NO);
session->inbound = GNUNET_YES;
if (GNUNET_OK == GNUNET_SERVER_client_get_address (client, &vaddr, &alen))
@@ -2088,11 +2099,10 @@
if (client == NULL)
return;
- plugin->max_connections++;
session = lookup_session_by_client (plugin, client);
if (session == NULL)
return; /* unknown, nothing to do */
- LOG (GNUNET_ERROR_TYPE_DEBUG,
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
"Destroying session of `%4s' with %s due to network-level
disconnect.\n",
GNUNET_i2s (&session->target),
(session->addr !=
@@ -2100,6 +2110,15 @@
session->addr,
session->addrlen) :
"*");
+
+ if (plugin->cur_connections == plugin->max_connections)
+ GNUNET_SERVER_resume (plugin->server); /* Resume server */
+
+ if (plugin->cur_connections < 1)
+ GNUNET_break (0);
+ else
+ plugin->cur_connections--;
+
GNUNET_STATISTICS_update (session->plugin->env->stats,
gettext_noop
("# network-level TCP disconnect events"), 1,
@@ -2352,6 +2371,7 @@
plugin = GNUNET_malloc (sizeof (struct Plugin));
plugin->sessionmap = GNUNET_CONTAINER_multihashmap_create (max_connections,
GNUNET_YES);
plugin->max_connections = max_connections;
+ plugin->cur_connections = 0;
plugin->open_port = bport;
plugin->adv_port = aport;
plugin->env = env;
@@ -2421,6 +2441,7 @@
i < sizeof (my_handlers) / sizeof (struct GNUNET_SERVER_MessageHandler);
i++)
plugin->handlers[i].callback_cls = plugin;
+
GNUNET_SERVER_add_handlers (plugin->server, plugin->handlers);
GNUNET_SERVER_disconnect_notify (plugin->server, &disconnect_notify, plugin);
plugin->nat_wait_conns = GNUNET_CONTAINER_multihashmap_create (16,
GNUNET_YES);
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