/* This file is part of GNUnet. (C) 2010,2011 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 by the Free Software Foundation; either version 3, or (at your option) any later version. GNUnet is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GNUnet; see the file COPYING. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /** * @file transport/gnunet-service-transport_neighbours.c * @brief neighbour management * @author Christian Grothoff */ #include "platform.h" #include "gnunet-service-transport_neighbours.h" #include "gnunet-service-transport.h" // TODO: // - have a way to access the currently 'connected' session // (for sending and to notice disconnect of it!) // - have a way to access/update bandwidth/quota information per peer // (for CostReport/TrafficReport callbacks) /** * Initialize the neighbours subsystem. * * @param cls closure for callbacks * @param connect_cb function to call if we connect to a peer * @param disconnect_cb function to call if we disconnect from a peer */ void GST_neighbours_start (void *cls, GNUNET_TRANSPORT_NotifyConnect connect_cb, GNUNET_TRANSPORT_NotifyDisconnect disconnect_cb) { } /** * Cleanup the neighbours subsystem. */ void GST_neighbours_stop () { } /** * Try to create a connection to the given target (eventually). * * @param target peer to try to connect to */ void GST_neighbours_try_connect (const struct GNUNET_PeerIdentity *target) { } /** * Test if we're connected to the given peer. * * @param target peer to test * @return GNUNET_YES if we are connected, GNUNET_NO if not */ int GST_neighbours_test_connected (const struct GNUNET_PeerIdentity *target) { return GNUNET_NO; } /** * Transmit a message to the given target using the active connection. * * @param target destination * @param msg message to send * @param cont function to call when done * @param cont_cls closure for 'cont' */ void GST_neighbours_send (const struct GNUNET_PeerIdentity *target, const struct GNUNET_MessageHeader *msg, GST_NeighbourSendContinuation cont, void *cont_cls) { } /** * Change the incoming quota for the given peer. * * @param neighbour identity of peer to change qutoa for * @param quota new quota */ void GST_neighbours_set_incoming_quota (const struct GNUNET_PeerIdentity *neighbour, struct GNUNET_BANDWIDTH_Value32NBO quota) { #if 0 n = find_neighbour (neighbour); if (n == NULL) { GNUNET_STATISTICS_update (stats, gettext_noop ("# SET QUOTA messages ignored (no such peer)"), 1, GNUNET_NO); return; } GNUNET_BANDWIDTH_tracker_update_quota (&n->in_tracker, quota); if (0 != ntohl (qsm->quota.value__)) return; #if DEBUG_TRANSPORT GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Disconnecting peer `%4s' due to `%s'\n", GNUNET_i2s(&n->id), "SET_QUOTA"); #endif GNUNET_STATISTICS_update (stats, gettext_noop ("# disconnects due to quota of 0"), 1, GNUNET_NO); GST_neighbours_force_disconnect (neighbour); #endif } /** * If we have an active connection to the given target, it must be shutdown. * * @param target peer to disconnect from */ void GST_neighbours_force_disconnect (const struct GNUNET_PeerIdentity *target) { } /** * Iterate over all connected neighbours. * * @param cb function to call * @param cb_cls closure for cb */ void GST_neighbours_iterate (GST_NeighbourIterator cb, void *cb_cls) { } /** * We have received a PONG. Update lifeness of the neighbour. * * @param sender peer sending the PONG * @param hdr the PONG message (presumably) * @param plugin_name name of transport that delivered the PONG * @param sender_address address of the other peer, NULL if other peer * connected to us * @param sender_address_len number of bytes in sender_address * @param ats performance data * @param ats_count number of entries in ats (excluding 0-termination) * @return GNUNET_OK if the message was well-formed, GNUNET_SYSERR if not */ int GST_neighbours_handle_pong (const struct GNUNET_PeerIdentity *sender, const struct GNUNET_MessageHeader *hdr, const char *plugin_name, const void *sender_address, size_t sender_address_len, const struct GNUNET_TRANSPORT_ATS_Information *ats, uint32_t ats_count) { return GNUNET_SYSERR; } /** * We have received a CONNECT. Set the peer to connected. * * @param sender peer sending the PONG * @param hdr the PONG message (presumably) * @param plugin_name name of transport that delivered the PONG * @param sender_address address of the other peer, NULL if other peer * connected to us * @param sender_address_len number of bytes in sender_address * @param ats performance data * @param ats_count number of entries in ats (excluding 0-termination) * @return GNUNET_OK if the message was well-formed, GNUNET_SYSERR if not */ int GST_neighbours_handle_connect (const struct GNUNET_PeerIdentity *sender, const struct GNUNET_MessageHeader *hdr, const char *plugin_name, const void *sender_address, size_t sender_address_len, const struct GNUNET_TRANSPORT_ATS_Information *ats, uint32_t ats_count) { return GNUNET_SYSERR; } /** * We have received a DISCONNECT. Set the peer to disconnected. * * @param sender peer sending the PONG * @param hdr the PONG message (presumably) * @param plugin_name name of transport that delivered the PONG * @param sender_address address of the other peer, NULL if other peer * connected to us * @param sender_address_len number of bytes in sender_address * @return GNUNET_OK if the message was well-formed, GNUNET_SYSERR if not */ int GST_neighbours_handle_disconnect (const struct GNUNET_PeerIdentity *sender, const struct GNUNET_MessageHeader *hdr, const char *plugin_name, const void *sender_address, size_t sender_address_len) { return GNUNET_SYSERR; } /* end of file gnunet-service-transport_neighbours.c */