grapes / include / trade_sig_ha.h @ 0ef5aac7
History | View | Annotate | Download (5.54 KB)
| 1 |
/** @file trade_sig_ha.h
|
|---|---|
| 2 |
*
|
| 3 |
* @brief Chunk Signaling API - Higher Abstraction (HA).
|
| 4 |
*
|
| 5 |
* The trade signaling HA provides a set of primitives for chunks signaling negotiation with other peers, in order to collect information for the effective chunk exchange with other peers. This is a part of the Data Exchange Protocol which provides high level abstraction for chunks' negotiations, like requesting and proposing chunks.
|
| 6 |
*
|
| 7 |
*/
|
| 8 |
|
| 9 |
|
| 10 |
#ifndef TRADE_SIG_HA_H
|
| 11 |
#define TRADE_SIG_HA_H
|
| 12 |
|
| 13 |
#include "net_helper.h" |
| 14 |
#include "chunkidset.h" |
| 15 |
|
| 16 |
enum signaling_type {
|
| 17 |
sig_offer, sig_accept, sig_request, sig_deliver, sig_send_buffermap, sig_request_buffermap, sig_ack, |
| 18 |
}; |
| 19 |
|
| 20 |
/**
|
| 21 |
* @brief Set current node identifier.
|
| 22 |
*
|
| 23 |
* Initialize the node identifier of the peer
|
| 24 |
*
|
| 25 |
* @param[in] myID current node indentifier.
|
| 26 |
* @return 1 on success, < 0 on error.
|
| 27 |
*/
|
| 28 |
int chunkSignalingInit(struct nodeID *myID); |
| 29 |
|
| 30 |
/**
|
| 31 |
* @brief Parse an incoming signaling message, providing the signal type and the information of the signaling message.
|
| 32 |
*
|
| 33 |
* Parse an incoming signaling message provided in the buffer, giving the information of the message received.
|
| 34 |
*
|
| 35 |
* @param[in] buff containing the incoming message.
|
| 36 |
* @param[in] buff_len length of the buffer.
|
| 37 |
* @param[out] owner_id identifier of the node on which refer the message just received.
|
| 38 |
* @param[out] cset array of chunkIDs.
|
| 39 |
* @param[out] max_deliver deliver at most this number of Chunks.
|
| 40 |
* @param[out] trans_id transaction number associated with this message.
|
| 41 |
* @param[out] sig_type Type of signaling message.
|
| 42 |
* @return 1 on success, <0 on error.
|
| 43 |
*/
|
| 44 |
int parseSignaling(uint8_t *buff, int buff_len, struct nodeID **owner_id, |
| 45 |
struct chunkID_set **cset, int *max_deliver, uint16_t *trans_id, |
| 46 |
enum signaling_type *sig_type);
|
| 47 |
|
| 48 |
/**
|
| 49 |
* @brief Request a set of chunks from a Peer.
|
| 50 |
*
|
| 51 |
* Request a set of Chunks towards a Peer, and specify the maximum number of Chunks attempted to receive
|
| 52 |
* (i.e., the number of chunks the destination peer would like to receive among those requested).
|
| 53 |
*
|
| 54 |
* @param[in] to target peer to request the ChunkIDs from.
|
| 55 |
* @param[in] cset array of ChunkIDs.
|
| 56 |
* @param[in] max_deliver deliver at most this number of Chunks.
|
| 57 |
* @param[in] trans_id transaction number associated with this request.
|
| 58 |
* @return 1 on success, <0 on error.
|
| 59 |
*/
|
| 60 |
int requestChunks(struct nodeID *to, const struct chunkID_set *cset, int max_deliver, uint16_t trans_id); |
| 61 |
|
| 62 |
/**
|
| 63 |
* @brief Deliver a set of Chunks to a Peer as a reply of its previous request of Chunks.
|
| 64 |
*
|
| 65 |
* Announce to the Peer which sent a request of a set of Chunks, that we have these chunks (sub)set available
|
| 66 |
* among all those requested and willing to deliver them.
|
| 67 |
*
|
| 68 |
* @param[in] to target peer to which deliver the ChunkIDs.
|
| 69 |
* @param[in] cset array of ChunkIDs.
|
| 70 |
* @param[in] trans_id transaction number associated with this request.
|
| 71 |
* @return 1 on success, <0 on error.
|
| 72 |
*/
|
| 73 |
int deliverChunks(struct nodeID *to, struct chunkID_set *cset, uint16_t trans_id); |
| 74 |
|
| 75 |
/**
|
| 76 |
* @brief Offer a (sub)set of chunks to a Peer.
|
| 77 |
*
|
| 78 |
* Initiate a offer for a set of Chunks towards a Peer, and specify the maximum number of Chunks attempted to deliver
|
| 79 |
* (attempted to deliver: i.e., the sender peer should try to send at most this number of Chunks from the set).
|
| 80 |
*
|
| 81 |
* @param[in] to target peer to offer the ChunkIDs.
|
| 82 |
* @param[in] cset array of ChunkIDs.
|
| 83 |
* @param[in] max_deliver deliver at most this number of Chunks.
|
| 84 |
* @param[in] trans_id transaction number associated with this request.
|
| 85 |
* @return 1 on success, <0 on error.
|
| 86 |
*/
|
| 87 |
int offerChunks(struct nodeID *to, struct chunkID_set *cset, int max_deliver, uint16_t trans_id); |
| 88 |
|
| 89 |
/**
|
| 90 |
* @brief Accept a (sub)set of chunks from a Peer.
|
| 91 |
*
|
| 92 |
* Announce to accept a (sub)set of Chunks from a Peer which sent a offer before, and specify the maximum number of Chunks attempted to receive
|
| 93 |
* (attempted to receive: i.e., the receiver peer would like to receive at most this number of Chunks from the set offered before).
|
| 94 |
*
|
| 95 |
* @param[in] to target peer to accept the ChunkIDs.
|
| 96 |
* @param[in] cset array of ChunkIDs.
|
| 97 |
* @param[in] trans_id transaction number associated with this request.
|
| 98 |
* @return 1 on success, <0 on error.
|
| 99 |
*/
|
| 100 |
int acceptChunks(struct nodeID *to, struct chunkID_set *cset, uint16_t trans_id); |
| 101 |
|
| 102 |
/**
|
| 103 |
* @brief Send a BufferMap to a Peer.
|
| 104 |
*
|
| 105 |
* Send (our own or some other peer's) BufferMap to a third Peer.
|
| 106 |
*
|
| 107 |
* @param[in] to PeerID.
|
| 108 |
* @param[in] owner Owner of the BufferMap to send.
|
| 109 |
* @param[in] bmap the BufferMap to send.
|
| 110 |
* @param[in] cb_size the size of the chunk buffer (not the size of the buffer map sent, but that of the chunk buffer).
|
| 111 |
* @param[in] trans_id transaction number associated with this send.
|
| 112 |
* @return 1 Success, <0 on error.
|
| 113 |
*/
|
| 114 |
int sendBufferMap(struct nodeID *to, const struct nodeID *owner, struct chunkID_set *bmap, int cb_size, uint16_t trans_id); |
| 115 |
|
| 116 |
/**
|
| 117 |
* @brief Request a BufferMap to a Peer.
|
| 118 |
*
|
| 119 |
* Request (target peer or some other peer's) BufferMap to target Peer.
|
| 120 |
*
|
| 121 |
* @param[in] to PeerID.
|
| 122 |
* @param[in] owner Owner of the BufferMap to request.
|
| 123 |
* @param[in] trans_id transaction number associated with this request.
|
| 124 |
* @return 1 Success, <0 on error.
|
| 125 |
*/
|
| 126 |
int requestBufferMap(struct nodeID *to, const struct nodeID *owner, uint16_t trans_id); |
| 127 |
|
| 128 |
/**
|
| 129 |
* @brief Send an Acknoledgement to a Peer.
|
| 130 |
*
|
| 131 |
* Send (our own or some other peer's) BufferMap to a third Peer.
|
| 132 |
*
|
| 133 |
* @param[in] to PeerID.
|
| 134 |
* @param[in] cset array of ChunkIDs.
|
| 135 |
* @param[in] trans_id transaction number associated with this send.
|
| 136 |
* @return 1 Success, <0 on error.
|
| 137 |
*/
|
| 138 |
int sendAck(struct nodeID *to, struct chunkID_set *cset, uint16_t trans_id); |
| 139 |
|
| 140 |
#endif //TRADE_SIG_HA_H |