#ifndef BITTORRENT_MESSAGES_H_
#define BITTORRENT_MESSAGES_H_
#include <msg/msg.h>
+
+/**
+ * Message sizes
+ * Sizes based on report by A. Legout et al, Understanding BitTorrent: An Experimental Perspective
+ * http://hal.inria.fr/inria-00000156/en
+ */
+#define MESSAGE_HANDSHAKE_SIZE 68
+#define MESSAGE_CHOKE_SIZE 5
+#define MESSAGE_UNCHOKE_SIZE 5
+#define MESSAGE_INTERESTED_SIZE 5
+#define MESSAGE_NOTINTERESTED_SIZE 5
+#define MESSAGE_HAVE_SIZE 9
+#define MESSAGE_BITFIELD_SIZE 5
+#define MESSAGE_REQUEST_SIZE 17
+#define MESSAGE_PIECE_SIZE 13
+#define MESSAGE_CANCEL_SIZE 17
+
/**
* Types of messages exchanged between two peers.
*/
MESSAGE_HAVE,
MESSAGE_BITFIELD,
MESSAGE_REQUEST,
- MESSAGE_PIECE
+ MESSAGE_PIECE,
+ MESSAGE_CANCEL
} e_message_type;
/**
int index;
int block_index;
int block_length;
- int stalled:1;
} s_message_t, *message_t;
/**
* Builds a new value-less message
*/
-XBT_INLINE msg_task_t task_message_new(e_message_type type,
- const char *issuer_host_name,
- const char *mailbox, int peer_id);
+msg_task_t task_message_new(e_message_type type,
+ const char *issuer_host_name,
+ const char *mailbox, int peer_id, int size);
/**
* Builds a new "have/piece" message
*/
-XBT_INLINE msg_task_t task_message_index_new(e_message_type type,
- const char *issuer_host_name,
- const char *mailbox, int peer_id,
- int index);
+msg_task_t task_message_index_new(e_message_type type,
+ const char *issuer_host_name,
+ const char *mailbox, int peer_id,
+ int index, int varsize);
/**
* Builds a new bitfield message
*/
msg_task_t task_message_bitfield_new(const char *issuer_host_name,
const char *mailbox, int peer_id,
- char *bitfield);
+ char *bitfield, int bitfield_size);
/**
* Builds a new "request" message
*/
msg_task_t task_message_request_new(const char *issuer_host_name,
- const char *mailbox, int peer_id, int index,
- int block_index, int block_length);
+ const char *mailbox, int peer_id,
+ int index, int block_index,
+ int block_length);
/**
* Build a new "piece" message
*/
msg_task_t task_message_piece_new(const char *issuer_host_name,
const char *mailbox, int peer_id, int index,
- int stalled, int block_index,
- int block_length);
+ int block_index,
+ int block_length, int block_size);
/**
* Free a message task
*/
void task_message_free(void *);
+
+int task_message_size(e_message_type type);
#endif /* BITTORRENT_MESSAGES_H_ */