void *peer_cls);
-/**
- * Functions with this signature are called whenever a message is
- * received or transmitted.
- *
- * @param cls closure (set from #GNUNET_CORE_connect)
- * @param peer the other peer involved (sender or receiver, NULL
- * for loopback messages where we are both sender and receiver)
- * @param message the actual message
- * @return #GNUNET_OK to keep the connection open,
- * #GNUNET_SYSERR to close connection to the peer (signal serious error)
- */
-typedef int
-(*GNUNET_CORE_MessageCallback) (void *cls,
- const struct GNUNET_PeerIdentity *other,
- const struct GNUNET_MessageHeader *message);
-
-
-/**
- * Message handler. Each struct specifies how to handle on particular
- * type of message received.
- */
-struct GNUNET_CORE_MessageHandler
-{
- /**
- * Function to call for messages of @e type.
- */
- GNUNET_CORE_MessageCallback callback;
-
- /**
- * Type of the message this handler covers.
- */
- uint16_t type;
-
- /**
- * Expected size of messages of this type. Use 0 for variable-size.
- * If non-zero, messages of the given type will be discarded if they
- * do not have the right size.
- */
- uint16_t expected_size;
-
-};
-
-
/**
* Function called after #GNUNET_CORE_connect has succeeded (or failed
* for good). Note that the private key of the peer is intentionally