#define MESH_H_
#include <stdint.h>
-#include <gnunet_mesh_service_new.h>
+#define MESH_DEBUG GNUNET_YES
+
+#define INITIAL_WINDOW_SIZE 8
+#define ACK_THRESHOLD INITIAL_WINDOW_SIZE / 2
+
+#include "platform.h"
#include "gnunet_common.h"
+#include "gnunet_util_lib.h"
+#include "gnunet_peer_lib.h"
+#include "gnunet_core_service.h"
+#include "gnunet_protocols.h"
+#include <gnunet_mesh_service.h>
/******************************************************************************/
/******************** MESH LOCAL MESSAGES *************************/
/************************** CONSTANTS ******************************/
/******************************************************************************/
-#define GNUNET_MESH_LOCAL_TUNNEL_ID_CLI 0x80000000
-#define GNUNET_MESH_LOCAL_TUNNEL_ID_SERV 0xB0000000
+#define GNUNET_MESH_LOCAL_TUNNEL_ID_CLI 0x80000000
+#define GNUNET_MESH_LOCAL_TUNNEL_ID_SERV 0xB0000000
+#define HIGH_PID 0xFFFF0000
+#define LOW_PID 0x0000FFFF
+
+#define PID_OVERFLOW(pid, max) (pid > HIGH_PID && max < LOW_PID)
/******************************************************************************/
/************************** MESSAGES ******************************/
/******************************************************************************/
+GNUNET_NETWORK_STRUCT_BEGIN
+
/**
* Message for a client to register to the service
*/
/**
* Type for tunnel numbering.
- * - Local tunnel numbers are >= 0x80000000
+ * - Local tunnel numbers given by the service (incoming) are >= 0xB0000000
+ * - Local tunnel numbers given by the client (created) are >= 0x80000000
* - Global tunnel numbers are < 0x80000000
*/
typedef uint32_t MESH_TunnelNumber;
{
/**
* Type: GNUNET_MESSAGE_TYPE_MESH_LOCAL_TUNNEL_[CREATE|DESTROY]
+ * GNUNET_MESSAGE_TYPE_MESH_LOCAL_TUNNEL_[MAX|MIN]
*
* Size: sizeof(struct GNUNET_MESH_TunnelMessage)
*/
struct GNUNET_MESH_PeerControl
{
- /**
- * Type: GNUNET_MESSAGE_TYPE_MESH_LOCAL_CONNECT_PEER_[ADD|DEL]
- * (client to service, client created tunnel)
- * GNUNET_MESSAGE_TYPE_MESH_LOCAL_PEER_[CONNECTED|DISCONNECTED]
- * (service to client)
- *
- * Size: sizeof(struct GNUNET_MESH_PeerControl)
- */
+ /**
+ * Type: GNUNET_MESSAGE_TYPE_MESH_LOCAL_CONNECT_PEER_[ADD|DEL|[UN]BLACKLIST]
+ * (client to service, client created tunnel)
+ * GNUNET_MESSAGE_TYPE_MESH_LOCAL_PEER_[CONNECTED|DISCONNECTED]
+ * (service to client)
+ *
+ * Size: sizeof(struct GNUNET_MESH_PeerControl)
+ */
struct GNUNET_MessageHeader header;
- /**
- * ID of a tunnel controlled by this client.
- */
+ /**
+ * ID of a tunnel controlled by this client.
+ */
MESH_TunnelNumber tunnel_id GNUNET_PACKED;
- /**
- * Peer to connect/disconnect.
- */
+ /**
+ * Peer to connect/disconnect.
+ */
struct GNUNET_PeerIdentity peer;
};
/**
- * Message for connecting to peers offering a certain service.
+ * Message for connecting to peers offering a service, by service number.
*/
struct GNUNET_MESH_ConnectPeerByType
{
/**
* Type: GNUNET_MESSAGE_TYPE_MESH_LOCAL_CONNECT_PEER_BY_TYPE |
* GNUNET_MESSAGE_TYPE_MESH_LOCAL_DISCONNECT_PEER_BY_TYPE
+ *
+ * Size: sizeof(struct GNUNET_MESH_ConnectPeerByType)
*/
struct GNUNET_MessageHeader header;
- /**
- * ID of a tunnel controlled by this client.
- */
+ /**
+ * ID of a tunnel controlled by this client.
+ */
MESH_TunnelNumber tunnel_id GNUNET_PACKED;
- /**
- * Type specification
- */
+ /**
+ * Type specification
+ */
GNUNET_MESH_ApplicationType type GNUNET_PACKED;
};
+
+/**
+ * Message for connecting to peers offering a service, by service string.
+ */
+struct GNUNET_MESH_ConnectPeerByString
+{
+ /**
+ * Type: GNUNET_MESSAGE_TYPE_MESH_LOCAL_PEER_ADD_BY_STRING
+ *
+ * Size: sizeof(struct GNUNET_MESH_ConnectPeerByString) + strlen (string)
+ */
+ struct GNUNET_MessageHeader header;
+
+ /**
+ * ID of a tunnel controlled by this client.
+ */
+ MESH_TunnelNumber tunnel_id GNUNET_PACKED;
+
+ /* String describing the service */
+};
+
+
+/**
+ * Message to allow the client send more data to the service
+ * (always service -> client).
+ */
+struct GNUNET_MESH_LocalAck
+{
+ /**
+ * Type: GNUNET_MESSAGE_TYPE_MESH_LOCAL_ACK
+ */
+ struct GNUNET_MessageHeader header;
+
+ /**
+ * ID of the tunnel allowed to send more data.
+ */
+ MESH_TunnelNumber tunnel_id GNUNET_PACKED;
+
+ /**
+ * ID of the last packet allowed.
+ */
+ uint32_t max_pid GNUNET_PACKED;
+};
+
+
+GNUNET_NETWORK_STRUCT_END
+
+/******************************************************************************/
+/************************ ENUMERATIONS ****************************/
+/******************************************************************************/
+
+/**
+ * All the states a peer participating in a tunnel can be in.
+ */
+enum MeshPeerState
+{
+ /**
+ * Uninitialized status, should never appear in operation.
+ */
+ MESH_PEER_INVALID,
+
+ /**
+ * Peer is the root and owner of the tree
+ */
+ MESH_PEER_ROOT,
+
+ /**
+ * Peer only retransmits traffic, is not a final destination
+ */
+ MESH_PEER_RELAY,
+
+ /**
+ * Path to the peer not known yet
+ */
+ MESH_PEER_SEARCHING,
+
+ /**
+ * Request sent, not yet answered.
+ */
+ MESH_PEER_WAITING,
+
+ /**
+ * Peer connected and ready to accept data
+ */
+ MESH_PEER_READY,
+
+ /**
+ * Peer connected previosly but not responding
+ */
+ MESH_PEER_RECONNECTING
+};
+
+
+/**
+ * Check if one pid is bigger than other, accounting for overflow.
+ *
+ * @param bigger Argument that should be bigger.
+ * @param smaller Argument that should be smaller.
+ *
+ * @return True if bigger (arg1) has a higher value than smaller (arg 2).
+ */
+int
+GMC_is_pid_bigger (uint32_t bigger, uint32_t smaller);
+
+
+/**
+ * Get the higher ACK value out of two values, taking in account overflow.
+ *
+ * @param a First ACK value.
+ * @param b Second ACK value.
+ *
+ * @return Highest ACK value from the two.
+ */
+uint32_t
+GMC_max_pid (uint32_t a, uint32_t b);
+
+
+/**
+ * Get the lower ACK value out of two values, taking in account overflow.
+ *
+ * @param a First ACK value.
+ * @param b Second ACK value.
+ *
+ * @return Lowest ACK value from the two.
+ */
+uint32_t
+GMC_min_pid (uint32_t a, uint32_t b);
+
+
+/**
+ * Convert a message type into a string to help debug
+ * Generated with:
+ * FIND: "#define ([^ ]+)[ ]*([0-9]+)"
+ * REPLACE: " case \2: return "\1"; break;"
+ *
+ * @param m Message type.
+ *
+ * @return Human readable string description.
+ */
+const char *
+GNUNET_MESH_DEBUG_M2S (uint16_t m);
+
#endif
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