#include "gnunet-service-transport_neighbours.h"
#include "gnunet-service-transport_plugins.h"
#include "gnunet-service-transport_validation.h"
+#include "gnunet-service-transport_manipulation.h"
#include "transport.h"
/* globals */
struct GNUNET_PEERINFO_Handle *GST_peerinfo;
/**
- * Our public key.
+ * Handle to our service's server.
*/
-struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded GST_my_public_key;
+static struct GNUNET_SERVER_Handle *GST_server;
/**
* Our private key.
*/
-struct GNUNET_CRYPTO_RsaPrivateKey *GST_my_private_key;
+struct GNUNET_CRYPTO_EccPrivateKey *GST_my_private_key;
/**
* ATS handle.
*/
static int connections;
+/**
+ * Hello address expiration
+ */
+struct GNUNET_TIME_Relative hello_expiration;
+
/**
* Transmit our HELLO message to the given (connected) neighbour.
*
* @param cls the 'HELLO' message
* @param target a connected neighbour
- * @param ats performance information (unused)
- * @param ats_count number of records in ats (unused)
* @param address the address
* @param bandwidth_in inbound quota in NBO
* @param bandwidth_out outbound quota in NBO
*/
static void
transmit_our_hello (void *cls, const struct GNUNET_PeerIdentity *target,
- const struct GNUNET_ATS_Information *ats,
- uint32_t ats_count,
const struct GNUNET_HELLO_Address *address,
struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
const struct GNUNET_MessageHeader *hello = cls;
GST_neighbours_send (target, (const char *) hello, ntohs (hello->size),
- GNUNET_CONSTANTS_HELLO_ADDRESS_EXPIRATION, NULL, NULL);
+ hello_expiration, NULL, NULL);
}
* @param address the address
* @param session session used
* @param message the message to process
- * @param ats performance information
- * @param ats_count number of records in ats
* @return how long the plugin should wait until receiving more data
*/
static struct GNUNET_TIME_Relative
process_payload (const struct GNUNET_PeerIdentity *peer,
const struct GNUNET_HELLO_Address *address,
struct Session *session,
- const struct GNUNET_MessageHeader *message,
- const struct GNUNET_ATS_Information *ats, uint32_t ats_count)
+ const struct GNUNET_MessageHeader *message)
{
struct GNUNET_TIME_Relative ret;
int do_forward;
struct InboundMessage *im;
size_t msg_size = ntohs (message->size);
size_t size =
- sizeof (struct InboundMessage) + msg_size +
- sizeof (struct GNUNET_ATS_Information) * (ats_count + 1);
+ sizeof (struct InboundMessage) + msg_size;
char buf[size] GNUNET_ALIGN;
- struct GNUNET_ATS_Information *ap;
- ret = GNUNET_TIME_UNIT_ZERO;
do_forward = GNUNET_SYSERR;
ret = GST_neighbours_calculate_receive_delay (peer, msg_size, &do_forward);
return ret;
}
+ GST_ats_add_address ((struct GNUNET_HELLO_Address *) address, session);
+
if (do_forward != GNUNET_YES)
return ret;
im = (struct InboundMessage *) buf;
im->header.size = htons (size);
im->header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_RECV);
- im->ats_count = htonl (ats_count + 1);
im->peer = *peer;
- ap = (struct GNUNET_ATS_Information *) &im[1];
- memcpy (ap, ats, ats_count * sizeof (struct GNUNET_ATS_Information));
- ap[ats_count].type = htonl (GNUNET_ATS_QUALITY_NET_DELAY);
- ap[ats_count].value =
- htonl ((uint32_t) GST_neighbour_get_latency (peer).rel_value);
- memcpy (&ap[ats_count + 1], message, ntohs (message->size));
-
- GNUNET_ATS_address_add (GST_ats, address, session, ap, ats_count + 1);
- GNUNET_ATS_address_update (GST_ats, address, session, ap, ats_count + 1);
+ memcpy (&im[1], message, ntohs (message->size));
+
GST_clients_broadcast (&im->header, GNUNET_YES);
return ret;
* @param peer (claimed) identity of the other peer
* @param message the message, NULL if we only care about
* learning about the delay until we should receive again -- FIXME!
- * @param ats performance information
- * @param ats_count number of records in ats
* @param session identifier used for this session (NULL for plugins
* that do not offer bi-directional communication to the sender
* using the same "connection")
* @return how long the plugin should wait until receiving more data
* (plugins that do not support this, can ignore the return value)
*/
-static struct GNUNET_TIME_Relative
-plugin_env_receive_callback (void *cls, const struct GNUNET_PeerIdentity *peer,
+struct GNUNET_TIME_Relative
+GST_receive_callback (void *cls, const struct GNUNET_PeerIdentity *peer,
const struct GNUNET_MessageHeader *message,
- const struct GNUNET_ATS_Information *ats,
- uint32_t ats_count, struct Session *session,
+ struct Session *session,
const char *sender_address,
uint16_t sender_address_len)
{
switch (type)
{
+ case GNUNET_MESSAGE_TYPE_HELLO_LEGACY:
+ /* Legacy HELLO message, discard */
+ return ret;
case GNUNET_MESSAGE_TYPE_HELLO:
GST_validation_handle_hello (message);
return ret;
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
"Processing `%s' from `%s'\n", "PING",
(sender_address !=
- NULL) ? GST_plugins_a2s (&address) : "<inbound>");
+ NULL) ? GST_plugins_a2s (&address) : TRANSPORT_SESSION_INBOUND_STRING);
GST_validation_handle_ping (peer, message, &address, session);
break;
case GNUNET_MESSAGE_TYPE_TRANSPORT_PONG:
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
"Processing `%s' from `%s'\n", "PONG",
(sender_address !=
- NULL) ? GST_plugins_a2s (&address) : "<inbound>");
+ NULL) ? GST_plugins_a2s (&address) : TRANSPORT_SESSION_INBOUND_STRING);
GST_validation_handle_pong (peer, message);
break;
case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_CONNECT:
- GST_neighbours_handle_connect (message, peer, &address, session, ats,
- ats_count);
+ GST_neighbours_handle_connect (message, peer, &address, session);
break;
case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_CONNECT_ACK:
- GST_neighbours_handle_connect_ack (message, peer, &address, session, ats,
- ats_count);
+ GST_neighbours_handle_connect_ack (message, peer, &address, session);
break;
case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_ACK:
- GST_neighbours_handle_session_ack (message, peer, &address, session, ats,
- ats_count);
+ GST_neighbours_handle_session_ack (message, peer, &address, session);
break;
case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_DISCONNECT:
GST_neighbours_handle_disconnect_message (peer, message);
GST_neighbours_keepalive (peer);
break;
case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_KEEPALIVE_RESPONSE:
- GST_neighbours_keepalive_response (peer, ats, ats_count);
+ GST_neighbours_keepalive_response (peer);
break;
default:
/* should be payload */
gettext_noop
("# bytes payload received"),
ntohs (message->size), GNUNET_NO);
- ret = process_payload (peer, &address, session, message, ats, ats_count);
+ ret = process_payload (peer, &address, session, message);
break;
}
end:
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Allowing receive from peer %s to continue in %llu ms\n",
- GNUNET_i2s (peer), (unsigned long long) ret.rel_value);
+ "Allowing receive from peer %s to continue in %s\n",
+ GNUNET_i2s (peer),
+ GNUNET_STRINGS_relative_time_to_string (ret, GNUNET_YES));
return ret;
}
* @param addr one of the addresses of the host
* the specific address format depends on the transport
* @param addrlen length of the address
+ * @param dest_plugin destination plugin to use this address with
*/
static void
plugin_env_address_change_notification (void *cls, int add_remove,
- const void *addr, size_t addrlen)
+ const void *addr, size_t addrlen,
+ const char *dest_plugin)
{
- const char *plugin_name = cls;
struct GNUNET_HELLO_Address address;
address.peer = GST_my_identity;
- address.transport_name = plugin_name;
+ address.transport_name = dest_plugin;
address.address = addr;
address.address_length = addrlen;
GST_hello_modify_addresses (add_remove, &address);
addrlen,
GNUNET_a2s(addr, addrlen));
GNUNET_break (0);
- return (const struct GNUNET_ATS_Information) ats;
+ return ats;
}
return GNUNET_ATS_address_get_type(GST_ats, addr, addrlen);
}
+/**
+ * Notify ATS about the new address including the network this address is
+ * located in.
+ *
+ * @param address the address
+ * @param session the session
+ */
+void
+GST_ats_add_address (const struct GNUNET_HELLO_Address *address,
+ struct Session *session)
+{
+ struct GNUNET_TRANSPORT_PluginFunctions *papi;
+ struct GNUNET_ATS_Information ats;
+ uint32_t net;
+
+ /* valid new address, let ATS know! */
+ if (NULL == address->transport_name)
+ {
+ GNUNET_break (0);
+ return;
+ }
+ if (NULL == (papi = GST_plugins_find (address->transport_name)))
+ {
+ /* we don't have the plugin for this address */
+ GNUNET_break (0);
+ return;
+ }
+
+ if (GNUNET_YES == GNUNET_ATS_session_known (GST_ats, address, session))
+ return;
+
+ net = papi->get_network (NULL, (void *) session);
+ if (GNUNET_ATS_NET_UNSPECIFIED == net)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Could not obtain a valid network for `%s' %s\n"),
+ GNUNET_i2s (&address->peer), GST_plugins_a2s (address));
+ GNUNET_break (0);
+ }
+ ats.type = htonl (GNUNET_ATS_NETWORK_TYPE);
+ ats.value = htonl(net);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Notifying ATS about peer `%s''s new address `%s' session %p in network %s\n",
+ GNUNET_i2s (&address->peer),
+ (0 == address->address_length) ? "<inbound>" : GST_plugins_a2s (address),
+ session,
+ GNUNET_ATS_print_network_type(net));
+ GNUNET_ATS_address_add (GST_ats,
+ address, session, &ats, 1);
+}
+
+
+/**
+ * Notify ATS about property changes to an address
+ *
+ * @param peer the peer
+ * @param address the address
+ * @param session the session
+ * @param ats performance information
+ * @param ats_count number of elements in ats
+ */
+void
+GST_ats_update_metrics (const struct GNUNET_PeerIdentity *peer,
+ const struct GNUNET_HELLO_Address *address,
+ struct Session *session,
+ const struct GNUNET_ATS_Information *ats,
+ uint32_t ats_count)
+{
+ struct GNUNET_ATS_Information *ats_new;
+
+ if (GNUNET_NO == GNUNET_ATS_session_known (GST_ats, address, session))
+ return;
+
+ /* Call to manipulation to manipulate ATS information */
+ ats_new = GST_manipulation_manipulate_metrics (peer, address, session, ats, ats_count);
+ if (NULL == ats_new)
+ {
+ GNUNET_break (0);
+ return;
+ }
+ if (GNUNET_NO == GNUNET_ATS_address_update (GST_ats, address, session, ats_new, ats_count))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Address or session unknown: failed to update properties for peer `%s' plugin `%s' address `%s' session %p\n"),
+ GNUNET_i2s (peer), address->transport_name, GST_plugins_a2s (address), session);
+ }
+ GNUNET_free (ats_new);
+}
+
+
+/**
+ * Function that will be called to figure if an address is an loopback,
+ * LAN, WAN etc. address
+ *
+ * @param cls closure
+ * @param peer the peer
+ * @param address binary address
+ * @param address_len length of the address
+ * @param session the session
+ * @param ats the ats information to update
+ * @param ats_count the number of ats elements
+ */
+static void
+plugin_env_update_metrics (void *cls,
+ const struct GNUNET_PeerIdentity *peer,
+ const void *address,
+ uint16_t address_len,
+ struct Session *session,
+ const struct GNUNET_ATS_Information *ats,
+ uint32_t ats_count)
+{
+ struct GNUNET_HELLO_Address haddress;
+ const char *plugin_name = cls;
+
+ if ((NULL == ats) || (0 == ats_count))
+ return;
+ GNUNET_assert (NULL != GST_ats);
+
+
+ haddress.peer = *peer;
+ haddress.address = address;
+ haddress.address_length = address_len;
+ haddress.transport_name = plugin_name;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Updating metrics for peer `%s' address %s session %p\n",
+ GNUNET_i2s (peer), GST_plugins_a2s(&haddress), session);
+ GST_ats_update_metrics (peer, &haddress, session, ats, ats_count);
+}
+
+/**
+ * Plugin tells transport service about a new (inbound) session
+ *
+ * @param cls unused
+ * @param peer the peer
+ * @param plugin plugin name
+ * @param address address
+ * @param address_len address length
+ * @param session the new session
+ * @param ats ats information
+ * @param ats_count number of ats information
+ */
+
+static void
+plugin_env_session_start (void *cls, const struct GNUNET_PeerIdentity *peer,
+ const char *plugin, const void *address, uint16_t address_len,
+ struct Session *session, const struct GNUNET_ATS_Information *ats,
+ uint32_t ats_count)
+{
+ struct GNUNET_HELLO_Address *addr;
+ if (NULL == peer)
+ {
+ GNUNET_break(0);
+ return;
+ }
+ if (NULL == plugin)
+ {
+ GNUNET_break(0);
+ return;
+ }
+ if (NULL == session)
+ {
+ GNUNET_break(0);
+ return;
+ }
+
+ addr = GNUNET_HELLO_address_allocate (peer, plugin, address, address_len);
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "Notification from plugin `%s' about new session %p from peer `%s' address `%s'\n",
+ plugin, session, GNUNET_i2s (peer), GST_plugins_a2s (addr));
+ GST_ats_add_address (addr, session);
+
+ if (0 < ats_count)
+ GST_ats_update_metrics (peer, addr, session, ats, ats_count);
+ GNUNET_free(addr);
+}
+
/**
* Function called by ATS to notify the callee that the
* assigned bandwidth or address for a given peer was changed. If the
* @param cls closure
* @param address address to use (for peer given in address)
* @param session session to use (if available)
- * @param bandwidth_out assigned outbound bandwidth for the connection, 0 to disconnect from peer
- * @param bandwidth_in assigned inbound bandwidth for the connection, 0 to disconnect from peer
+ * @param bandwidth_out assigned outbound bandwidth for the connection in NBO,
+ * 0 to disconnect from peer
+ * @param bandwidth_in assigned inbound bandwidth for the connection in NBO,
+ * 0 to disconnect from peer
* @param ats ATS information
* @param ats_count number of ATS elements
*/
/* ATS tells me to disconnect from peer */
if ((bw_in == 0) && (bw_out == 0))
{
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
"ATS tells me to disconnect from peer `%s'\n",
GNUNET_i2s (&address->peer));
GST_neighbours_force_disconnect (&address->peer);
*
* @param cls closure
* @param peer the peer that connected
- * @param ats performance data
- * @param ats_count number of entries in ats
* @param bandwidth_in inbound bandwidth in NBO
* @param bandwidth_out outbound bandwidth in NBO
*/
static void
neighbours_connect_notification (void *cls,
const struct GNUNET_PeerIdentity *peer,
- const struct GNUNET_ATS_Information *ats,
- uint32_t ats_count,
struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
{
- size_t len =
- sizeof (struct ConnectInfoMessage) +
- ats_count * sizeof (struct GNUNET_ATS_Information);
+ size_t len = sizeof (struct ConnectInfoMessage);
char buf[len] GNUNET_ALIGN;
struct ConnectInfoMessage *connect_msg = (struct ConnectInfoMessage *) buf;
- struct GNUNET_ATS_Information *ap;
connections++;
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
connect_msg->header.size = htons (sizeof (buf));
connect_msg->header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_CONNECT);
- connect_msg->ats_count = htonl (ats_count);
connect_msg->id = *peer;
connect_msg->quota_in = bandwidth_in;
connect_msg->quota_out = bandwidth_out;
- ap = (struct GNUNET_ATS_Information *) &connect_msg[1];
- memcpy (ap, ats, ats_count * sizeof (struct GNUNET_ATS_Information));
GST_clients_broadcast (&connect_msg->header, GNUNET_NO);
}
"Peer `%s' disconnected and we are connected to %u peers\n",
GNUNET_i2s (peer), connections);
+ GST_manipulation_peer_disconnect (peer);
disconnect_msg.header.size = htons (sizeof (struct DisconnectInfoMessage));
disconnect_msg.header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_DISCONNECT);
disconnect_msg.reserved = htonl (0);
GST_clients_stop ();
GST_blacklist_stop ();
GST_hello_stop ();
+ GST_manipulation_stop ();
- if (GST_peerinfo != NULL)
+ if (NULL != GST_peerinfo)
{
GNUNET_PEERINFO_disconnect (GST_peerinfo);
GST_peerinfo = NULL;
}
- if (GST_stats != NULL)
+ if (NULL != GST_stats)
{
GNUNET_STATISTICS_destroy (GST_stats, GNUNET_NO);
GST_stats = NULL;
}
- if (GST_my_private_key != NULL)
+ if (NULL != GST_my_private_key)
{
- GNUNET_CRYPTO_rsa_key_free (GST_my_private_key);
+ GNUNET_free (GST_my_private_key);
GST_my_private_key = NULL;
}
+ GST_server = NULL;
}
const struct GNUNET_CONFIGURATION_Handle *c)
{
char *keyfile;
- struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded tmp;
+ struct GNUNET_CRYPTO_EccPrivateKey *pk;
+ long long unsigned int max_fd_cfg;
+ int max_fd_rlimit;
+ int max_fd;
+ int friend_only;
+
/* setup globals */
GST_cfg = c;
if (GNUNET_OK !=
- GNUNET_CONFIGURATION_get_value_filename (c, "GNUNETD", "HOSTKEY",
+ GNUNET_CONFIGURATION_get_value_filename (c, "PEER", "PRIVATE_KEY",
&keyfile))
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
GNUNET_SCHEDULER_shutdown ();
return;
}
- GST_my_private_key = GNUNET_CRYPTO_rsa_key_create_from_file (keyfile);
- GNUNET_free (keyfile);
- if (GST_my_private_key == NULL)
+ if (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_time (c, "transport", "HELLO_EXPIRATION",
+ &hello_expiration))
{
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _("Transport service could not access hostkey. Exiting.\n"));
- GNUNET_SCHEDULER_shutdown ();
- return;
+ hello_expiration = GNUNET_CONSTANTS_HELLO_ADDRESS_EXPIRATION;
}
- GST_stats = GNUNET_STATISTICS_create ("transport", c);
- GST_peerinfo = GNUNET_PEERINFO_connect (c);
- memset (&GST_my_public_key, '\0', sizeof (GST_my_public_key));
- memset (&tmp, '\0', sizeof (tmp));
- GNUNET_CRYPTO_rsa_key_get_public (GST_my_private_key, &GST_my_public_key);
- GNUNET_CRYPTO_hash (&GST_my_public_key, sizeof (GST_my_public_key),
- &GST_my_identity.hashPubKey);
+ GST_server = server;
+ pk = GNUNET_CRYPTO_ecc_key_create_from_file (keyfile);
+ GNUNET_free (keyfile);
+ GNUNET_assert (NULL != pk);
+ GST_my_private_key = pk;
+ GST_stats = GNUNET_STATISTICS_create ("transport", GST_cfg);
+ GST_peerinfo = GNUNET_PEERINFO_connect (GST_cfg);
+ GNUNET_CRYPTO_ecc_key_get_public_for_signature (GST_my_private_key,
+ &GST_my_identity.public_key);
GNUNET_assert (NULL != GST_my_private_key);
- GNUNET_assert (0 != memcmp (&GST_my_public_key, &tmp, sizeof (GST_my_public_key)));
+
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "My identity is `%4s'\n", GNUNET_i2s (&GST_my_identity));
GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &shutdown_task,
NULL);
- if (GST_peerinfo == NULL)
+ if (NULL == GST_peerinfo)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
_("Could not access PEERINFO service. Exiting.\n"));
return;
}
+ max_fd_rlimit = 0;
+ max_fd_cfg = 0;
+#if HAVE_GETRLIMIT
+ struct rlimit r_file;
+ if (0 == getrlimit (RLIMIT_NOFILE, &r_file))
+ {
+ max_fd_rlimit = r_file.rlim_cur;
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Maximum number of open files was: %u/%u\n", r_file.rlim_cur,
+ r_file.rlim_max);
+ }
+ max_fd_rlimit = (9 * max_fd_rlimit) / 10; /* Keep 10% for rest of transport */
+#endif
+ GNUNET_CONFIGURATION_get_value_number (GST_cfg, "transport", "MAX_FD", &max_fd_cfg);
+
+ if (max_fd_cfg > max_fd_rlimit)
+ max_fd = max_fd_cfg;
+ else
+ max_fd = max_fd_rlimit;
+ if (max_fd < DEFAULT_MAX_FDS)
+ max_fd = DEFAULT_MAX_FDS;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Limiting number of sockets to %u: validation %u, neighbors: %u\n",
+ max_fd, (max_fd / 3) , (max_fd / 3) * 2);
+
+ friend_only = GNUNET_CONFIGURATION_get_value_yesno(GST_cfg, "topology","FRIENDS-ONLY");
+ if (GNUNET_SYSERR == friend_only)
+ friend_only = GNUNET_NO; /* According to topology defaults */
/* start subsystems */
- GST_hello_start (&process_hello_update, NULL);
+ GST_hello_start (friend_only, &process_hello_update, NULL);
GNUNET_assert (NULL != GST_hello_get());
- GST_blacklist_start (server);
+ GST_blacklist_start (GST_server, GST_cfg, &GST_my_identity);
GST_ats =
GNUNET_ATS_scheduling_init (GST_cfg, &ats_request_address_change, NULL);
- GST_plugins_load (&plugin_env_receive_callback,
+ GST_manipulation_init (GST_cfg);
+ GST_plugins_load (&GST_manipulation_recv,
&plugin_env_address_change_notification,
+ &plugin_env_session_start,
&plugin_env_session_end,
- &plugin_env_address_to_type);
+ &plugin_env_address_to_type,
+ &plugin_env_update_metrics);
GST_neighbours_start (NULL,
&neighbours_connect_notification,
&neighbours_disconnect_notification,
- &neighbours_address_notification);
- GST_clients_start (server);
- GST_validation_start ();
+ &neighbours_address_notification,
+ (max_fd / 3) * 2);
+ GST_clients_start (GST_server);
+ GST_validation_start ((max_fd / 3));
}
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