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22 * @file core/gnunet-service-core_kx.h
23 * @brief code for managing the key exchange (SET_KEY, PING, PONG) with other peers
24 * @author Christian Grothoff
26 #ifndef GNUNET_SERVICE_CORE_KX_H
27 #define GNUNET_SERVICE_CORE_KX_H
29 #include "gnunet_util_lib.h"
30 #include "gnunet_transport_service.h"
34 * Information about the status of a key exchange with another peer.
36 struct GSC_KeyExchangeInfo;
40 * Encrypt and transmit a message with the given payload.
42 * @param kx key exchange context
43 * @param payload payload of the message
44 * @param payload_size number of bytes in 'payload'
47 GSC_KX_encrypt_and_transmit (struct GSC_KeyExchangeInfo *kx,
53 * Initialize KX subsystem.
55 * @param pk private key to use for the peer
56 * @return #GNUNET_OK on success, #GNUNET_SYSERR on failure
59 GSC_KX_init (struct GNUNET_CRYPTO_EddsaPrivateKey *pk);
63 * Shutdown KX subsystem.
70 * Check if the given neighbour has excess bandwidth available.
72 * @param target neighbour to check
73 * @return #GNUNET_YES if excess bandwidth is available, #GNUNET_NO if not
76 GSC_NEIGHBOURS_check_excess_bandwidth (const struct GSC_KeyExchangeInfo *target);
80 * Check how many messages are queued for the given neighbour.
82 * @param target neighbour to check
83 * @return number of items in the message queue
86 GSC_NEIGHBOURS_get_queue_length (const struct GSC_KeyExchangeInfo *target);
90 * Handle #GNUNET_MESSAGE_TYPE_CORE_MONITOR_PEERS request. For this
91 * request type, the client does not have to have transmitted an INIT
92 * request. All current peers are returned, regardless of which
93 * message types they accept.
95 * @param mq message queue to add for monitoring
98 GSC_KX_handle_client_monitor_peers (struct GNUNET_MQ_Handle *mq);
102 /* end of gnunet-service-core_kx.h */