94 lines
2.1 KiB
C
94 lines
2.1 KiB
C
// Define constants
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#ifndef NODE_H
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#define NODE_H
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#include <stdlib.h>
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#include <time.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <string.h>
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#include "tlv.h"
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#include "hash.h"
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// On which port do we listen to
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#define LISTEN_PORT 1212
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// The node ID
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#define NODE_ID 203242402519736214145149136169422092269247115186189140178187251487819615911212154252117172522111472481308026129190139512419121015210238252292031613214452118122204415160254
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// The number of neighbours
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// The neighbour table has 15 entries
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#define NEIGHBOUR_MAX 15
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/* la table de voisins, qui est indexée par adresses de socket (des paires (IP, Port)),
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* et dont chaque entrée contient un booléen indiquant si le pair est permanent
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* (configuré au lancement) ou transitoire, et la date de dernière réception d’un
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* paquet de la part de ce pair ;
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*/
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typedef struct neighbour_peer {
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struct in6_addr ip;
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short port;
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char is_temporary;
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struct timeval last_seen;
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} neighbour_peer;
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// The strucuture to hold the messages
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/* It's a list of triplets, (Li,Si,Di)
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* Li : The Node ID of the publisher 64 bits
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* Si : the sequence number 16 bits
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* Di : the data of the message 192 bytes
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*/
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typedef struct pub_data {
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unsigned char length;
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long id;
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short seqno;
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char *data;
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} pub_data;
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// General list
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typedef struct list {
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void *data;
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void *next;
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} list;
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// Static variables
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static list *data_list;
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static list *neighbour_list;
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// TODO
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// fonctions signatures
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void listen_for_packets();
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int check_header(char * received_datagram[], int len, struct packet pack);
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int validate_tlvs(struct packet * pack, struct tlv_list * tlv_l);
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int update_neighbours();
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int work_with_tlvs(struct packet received_packet, char * data_from_packet[], struct sockaddr_in6 sender);
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void add_tlv(packet *packet, tlv *tlv, char type);
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int send_packet(struct tlv_list tlvs_to_send, );
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// threaded functions
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void t_ask_for_more_peers();
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void t_update_neighbours();
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void t_get_network_state();
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// Helper functions
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int len_list(list *l);
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neighbour_peer *get_random_neighbour();
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#endif
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