*/
#define GNUNET_MULTICAST_VERSION 0x00000000
-/**
- * Maximum size of a multicast message fragment.
- */
-#define GNUNET_MULTICAST_FRAGMENT_MAX_SIZE 63 * 1024
-
/**
* Opaque handle for a multicast group member.
*/
*/
GNUNET_MULTICAST_MESSAGE_NOT_FRAGMENTED
= GNUNET_MULTICAST_MESSAGE_FIRST_FRAGMENT
- | GNUNET_MULTICAST_MESSAGE_LAST_FRAGMENT
+ | GNUNET_MULTICAST_MESSAGE_LAST_FRAGMENT,
+
+ /**
+ * Historic message, used only locally when replaying messages from local
+ * storage.
+ */
+ GNUNET_MULTICAST_MESSAGE_HISTORIC = 1 << 30
+
};
struct GNUNET_CRYPTO_EccSignaturePurpose purpose;
/**
- * Number of the message fragment, monotonically increasing.
+ * Number of the message fragment, monotonically increasing starting from 1.
*/
uint64_t fragment_id GNUNET_PACKED;
/**
* Flags for this message fragment.
+ *
+ * @see enum GNUNET_MULTICAST_MessageFlags
*/
uint32_t flags GNUNET_PACKED;
/* Followed by message body. */
};
+
+/**
+ * Header of a request from a member to the origin.
+ */
+struct GNUNET_MULTICAST_RequestHeader
+{
+ /**
+ * Header for all requests from a member to the origin.
+ */
+ struct GNUNET_MessageHeader header;
+
+ /**
+ * Public key of the sending member.
+ */
+ struct GNUNET_CRYPTO_EddsaPublicKey member_key;
+
+ /**
+ * ECC signature of the request fragment.
+ *
+ * Signature must match the public key of the multicast group.
+ */
+ struct GNUNET_CRYPTO_EddsaSignature signature;
+
+ /**
+ * Purpose for the signature and size of the signed data.
+ */
+ struct GNUNET_CRYPTO_EccSignaturePurpose purpose;
+
+ /**
+ * Number of the request fragment.
+ * Monotonically increasing from 1.
+ */
+ uint64_t fragment_id GNUNET_PACKED;
+
+ /**
+ * Byte offset of this @e fragment of the @e request.
+ */
+ uint64_t fragment_offset GNUNET_PACKED;
+
+ /**
+ * Number of the request this fragment belongs to.
+ *
+ * Set in GNUNET_MULTICAST_origin_to_all().
+ */
+ uint64_t request_id GNUNET_PACKED;
+
+ /**
+ * Flags for this request.
+ */
+ enum GNUNET_MULTICAST_MessageFlags flags GNUNET_PACKED;
+
+ /* Followed by request body. */
+};
+
GNUNET_NETWORK_STRUCT_END
+/**
+ * Maximum size of a multicast message fragment.
+ */
+#define GNUNET_MULTICAST_FRAGMENT_MAX_SIZE 63 * 1024
+
+#define GNUNET_MULTICAST_FRAGMENT_MAX_PAYLOAD \
+ GNUNET_MULTICAST_FRAGMENT_MAX_SIZE \
+ - sizeof (struct GNUNET_MULTICAST_MessageHeader)
+
+
/**
* Handle that identifies a join request.
*
* @param next_fragment_id Next fragment ID to continue counting fragments from
* when restarting the origin. 1 for a new group.
* @param join_cb Function called to approve / disapprove joining of a peer.
- * @param mem_test_cb Function multicast can use to test group membership.
+ * @param member_test_cb Function multicast can use to test group membership.
* @param replay_frag_cb Function that can be called to replay a message fragment.
* @param replay_msg_cb Function that can be called to replay a message.
* @param request_cb Function called with message fragments from group members.
const struct GNUNET_CRYPTO_EddsaPrivateKey *priv_key,
uint64_t next_fragment_id,
GNUNET_MULTICAST_JoinCallback join_cb,
- GNUNET_MULTICAST_MembershipTestCallback mem_test_cb,
+ GNUNET_MULTICAST_MembershipTestCallback member_test_cb,
GNUNET_MULTICAST_ReplayFragmentCallback replay_frag_cb,
GNUNET_MULTICAST_ReplayMessageCallback replay_msg_cb,
GNUNET_MULTICAST_RequestCallback request_cb,
* Send a message to the origin of the multicast group.
*
* @param member Membership handle.
- * @param message_id Application layer ID for the message. Opaque to multicast.
+ * @param request_id Application layer ID for the request. Opaque to multicast.
* @param notify Callback to call to get the message.
* @param notify_cls Closure for @a notify.
* @return Handle to cancel request, NULL on error (i.e. request already pending).
*/
struct GNUNET_MULTICAST_MemberRequestHandle *
GNUNET_MULTICAST_member_to_origin (struct GNUNET_MULTICAST_Member *member,
- uint64_t message_id,
+ uint64_t request_id,
GNUNET_MULTICAST_MemberTransmitNotify notify,
void *notify_cls);