Ajout de la fonction d'envoie de tlv

src/node.c

@@ -45,9 +45,63 @@ neighbour_peer *get_random_neighbour() {
 
 /* ---- Fin fonctions utilitaires ---- */
 
-// This function 
+int send_tlv(struct tlv tlv_to_send, int tlv_type, struct sockaddr_in6 * dest_list[], int dest_list_size, int sock_num){
-int send_tlv(struct tlv, struct sockaddr_in6 * sender_list[], int sender_list_size){
+	debug_print("Building packet to send a TLV.");
 
+	// We first need to build the packet,
+	char packet_buff[1024];
+	struct packet pack;
+
+	pack.magic = 95;
+	pack.version = 1;
+	if(sizeof(tlv_to_send) > 1020){
+		debug_print("Unable to send TLV, the size is bigger than 1020 bits.");
+		return -1;
+	} else {
+		pack.length = sizeof(tlv_to_send);
+		strcpy(pack.body, (char) tlv_to_send);
+	}
+
+	// Casting the struct to a buffer.
+	packet_buff = (char *) pack;
+
+	debug_print("Packet has been built.");
+
+    // Vectorized buffer
+    struct iovec vec_buff = { .iov_len = sizeof(packet_buff), .iov_base = packet_buff };
+
+	int error_while_sending = 0;
+
+	// For every dest
+	for (size_t i = 0; i < dest_list_size; i++) {
+		// Creating the struct to send out with sendmsg
+		struct msghdr packet_tlv_send_out = {
+			.msg_name = &dest_list[i],
+			.msg_namelen = sizeof(dest_list[i]),
+			.msg_iov = &vec_buff,
+			.msg_iovlen = 1 // We have only one iovec buffer. But if we had 2, we would write 2.
+		};
+
+		response_code = sendmsg((int) sock_num, &packet_tlv_send_out, 0);
+		if (response_code < 0) {
+			debug_print("Unable to send out the packet to peer %i", i);
+			error_while_sending = 1;
+			continue;
+		} else if (response_code < sizeof(packet_tlv_send_out)) {
+			debug_print("Sent out only part of the packet.");
+			error_while_sending = 1;
+			continue;
+		} else {
+			debug_print("Send out packet to peer %i", i);
+		}
+	}
+
+	if (error_while_sending == 1) {
+		debug_print("Error occured while sending out a packet.");
+		return -1;
+	} else {
+		return 0;
+	}
 }
 
 // We need to make sure the TLV announces a length that will no go onto

src/node.h

@@ -81,14 +81,14 @@ int send_packet();
  * des paires.
  * Retourne -1 en cas d'échec, 0 en cas de succès.
  */
-int send_tlv(struct tlv tlv_to_send, int tlv_type, struct sockaddr_in6 * dest_list[], int dest_list_size);
+int send_tlv(struct tlv tlv_to_send, int tlv_type, struct sockaddr_in6 * dest_list[], int dest_list_size, int socket_num);
 
 
 /* Prend une liste de tlv, et construit un paquet pour ensuite les envoyer à la liste
  * des paires. Chaque pair recevera la même liste de TLV.
  * Retourne -1 en cas d'échec, 0 en cas de succès.
  */
-int send_tlvs(struct list * tlv_list, int tlv_type, struct sockaddr_in6 * dest_list[], int dest_list_size);
+int send_tlvs(struct list * tlv_list, int tlv_type, struct sockaddr_in6 * dest_list[], int dest_list_size, int socket_num);
 
 // threaded functions
 void t_ask_for_more_peers();