2 This file is part of GNUnet.
3 (C) 2010,2011 Christian Grothoff (and other contributing authors)
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22 * @file transport/gnunet-service-transport_neighbours.h
23 * @brief neighbour management API
24 * @author Christian Grothoff
26 #ifndef GNUNET_SERVICE_TRANSPORT_NEIGHBOURS_H
27 #define GNUNET_SERVICE_TRANSPORT_NEIGHBOURS_H
29 #include "gnunet_statistics_service.h"
30 #include "gnunet_transport_service.h"
31 #include "gnunet_transport_plugin.h"
32 #include "gnunet_util_lib.h"
35 // - ATS and similar info is a bit lacking in the API right now...
40 * Initialize the neighbours subsystem.
42 * @param cls closure for callbacks
43 * @param connect_cb function to call if we connect to a peer
44 * @param disconnect_cb function to call if we disconnect from a peer
47 GST_neighbours_start (void *cls,
48 GNUNET_TRANSPORT_NotifyConnect connect_cb,
49 GNUNET_TRANSPORT_NotifyDisconnect disconnect_cb);
53 * Cleanup the neighbours subsystem.
55 void GST_neighbours_stop (void);
59 * Try to create a connection to the given target (eventually).
61 * @param target peer to try to connect to
63 void GST_neighbours_try_connect (const struct GNUNET_PeerIdentity *target);
67 * Test if we're connected to the given peer.
69 * @param target peer to test
70 * @return GNUNET_YES if we are connected, GNUNET_NO if not
72 int GST_neighbours_test_connected (const struct GNUNET_PeerIdentity *target);
76 * Function called after the transmission is done.
79 * @param success GNUNET_OK on success, GNUNET_NO on failure, GNUNET_SYSERR if we're not connected
81 typedef void (*GST_NeighbourSendContinuation) (void *cls, int success);
85 * Transmit a message to the given target using the active connection.
87 * @param target destination
88 * @param msg message to send
89 * @param msg_size number of bytes in msg
90 * @param timeout when to fail with timeout
91 * @param cont function to call when done
92 * @param cont_cls closure for 'cont'
95 GST_neighbours_send (const struct GNUNET_PeerIdentity *target,
98 struct GNUNET_TIME_Relative timeout,
99 GST_NeighbourSendContinuation cont, void *cont_cls);
103 * We have received a message from the given sender.
104 * How long should we delay before receiving more?
105 * (Also used to keep the peer marked as live).
107 * @param sender sender of the message
108 * @param size size of the message
109 * @param do_forward set to GNUNET_YES if the message should be forwarded to clients
110 * GNUNET_NO if the neighbour is not connected or violates the quota
111 * @return how long to wait before reading more from this sender
113 struct GNUNET_TIME_Relative
114 GST_neighbours_calculate_receive_delay (const struct GNUNET_PeerIdentity
115 *sender, ssize_t size, int *do_forward);
119 * Keep the connection to the given neighbour alive longer,
120 * we received a KEEPALIVE (or equivalent).
122 * @param neighbour neighbour to keep alive
124 void GST_neighbours_keepalive (const struct GNUNET_PeerIdentity *neighbour);
128 * Change the incoming quota for the given peer.
130 * @param neighbour identity of peer to change qutoa for
131 * @param quota new quota
134 GST_neighbours_set_incoming_quota (const struct GNUNET_PeerIdentity *neighbour,
135 struct GNUNET_BANDWIDTH_Value32NBO quota);
139 * If we have an active connection to the given target, it must be shutdown.
141 * @param target peer to disconnect from
143 void GST_neighbours_force_disconnect (const struct GNUNET_PeerIdentity *target);
147 * Function called for each connected neighbour.
150 * @param neighbour identity of the neighbour
151 * @param ats performance data
152 * @param ats_count number of entries in ats (excluding 0-termination)
154 typedef void (*GST_NeighbourIterator) (void *cls,
155 const struct GNUNET_PeerIdentity *
158 GNUNET_TRANSPORT_ATS_Information * ats,
163 * Iterate over all connected neighbours.
165 * @param cb function to call
166 * @param cb_cls closure for cb
168 void GST_neighbours_iterate (GST_NeighbourIterator cb, void *cb_cls);
172 * A session was terminated. Take note.
174 * @param peer identity of the peer where the session died
175 * @param session session that is gone
178 GST_neighbours_session_terminated (const struct GNUNET_PeerIdentity *peer,
179 struct Session *session);
183 * For an existing neighbour record, set the active connection to
184 * use the given address.
186 * @param peer identity of the peer to switch the address for
187 * @param plugin_name name of transport that delivered the PONG
188 * @param address address of the other peer, NULL if other peer
190 * @param address_len number of bytes in address
191 * @param session session to use (or NULL)
192 * @param ats performance data
193 * @param ats_count number of entries in ats (excluding 0-termination)
196 GST_neighbours_switch_to_address (const struct GNUNET_PeerIdentity *peer,
197 const char *plugin_name,
200 struct Session *session,
201 const struct GNUNET_TRANSPORT_ATS_Information
202 *ats, uint32_t ats_count);
206 /* end of file gnunet-service-transport_neighbours.h */