//send a ping request
//Ping request only works if none has been sent to that ip/port in the last 5 seconds.
int pingreq(IP_Port ip_port)
{
if(is_pinging(ip_port, 0))
{
return 1;
}
int ping_id = add_pinging(ip_port);
if(ping_id == 0)
{
return 1;
}
char data[5 + CLIENT_ID_SIZE];
data[0] = 0;
memcpy(data + 1, &ping_id, 4);
memcpy(data + 5, self_client_id, CLIENT_ID_SIZE);
return sendpacket(ip_port, data, sizeof(data));
}
//send a ping request
//Ping request only works if none has been sent to that ip/port in the last 5 seconds.
static int pingreq(IP_Port ip_port, uint8_t * public_key)
{
if(memcmp(public_key, self_public_key, CLIENT_ID_SIZE) == 0)//check if packet is gonna be sent to ourself
{
return 1;
}
if(is_pinging(ip_port, 0))
{
return 1;
}
uint64_t ping_id = add_pinging(ip_port);
if(ping_id == 0)
{
return 1;
}
uint8_t data[1 + CLIENT_ID_SIZE + crypto_box_NONCEBYTES + sizeof(ping_id) + ENCRYPTION_PADDING];
uint8_t encrypt[sizeof(ping_id) + ENCRYPTION_PADDING];
uint8_t nonce[crypto_box_NONCEBYTES];
random_nonce(nonce);
int len = encrypt_data(public_key, self_secret_key, nonce, (uint8_t *)&ping_id, sizeof(ping_id), encrypt);
if(len != sizeof(ping_id) + ENCRYPTION_PADDING)
{
return -1;
}
data[0] = 0;
memcpy(data + 1, self_public_key, CLIENT_ID_SIZE);
memcpy(data + 1 + CLIENT_ID_SIZE, nonce, crypto_box_NONCEBYTES);
memcpy(data + 1 + CLIENT_ID_SIZE + crypto_box_NONCEBYTES, encrypt, len);
return sendpacket(ip_port, data, sizeof(data));
}
