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Slightly improved hole punching in the DHT.

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irungentoo 2013-07-28 17:10:55 -04:00
parent caaa1ff888
commit 0eb429e458
1 changed files with 11 additions and 10 deletions
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11
core/DHT.c
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@ -45,6 +45,7 @@ typedef struct {
uint8_t hole_punching; /*0 if not hole punching, 1 if currently hole punching */
uint32_t punching_index;
uint32_t punching_timestamp;
uint32_t recvNATping_timestamp;
uint64_t NATping_id;
uint32_t NATping_timestamp;
} Friend;
@ -623,9 +624,6 @@ int handle_sendnodes(uint8_t * packet, uint32_t length, IP_Port source)
int DHT_addfriend(uint8_t * client_id)
{
Friend * temp;
if(num_friends == 0)
temp = malloc(sizeof(Friend));
else
temp = realloc(friends_list, sizeof(Friend) * (num_friends + 1));
if(temp == NULL)
return 1;
@ -903,6 +901,7 @@ int handle_NATping(uint8_t * packet, uint32_t length, IP_Port source)
if(data[0] == 0) {
send_NATping(public_key, ping_id, 1); /*1 is reply*/
friends_list[friendnumber].recvNATping_timestamp = unix_time();
return 0;
} else if (data[0] == 1)
if(friends_list[friendnumber].NATping_id == ping_id) {
@ -987,12 +986,14 @@ static void doNAT()
if(num < MAX_FRIEND_CLIENTS/2)
continue;
if(friends_list[i].hole_punching != 1) {
if(friends_list[i].NATping_timestamp + PUNCH_INTERVAL < temp_time) {
send_NATping(friends_list[i].client_id, friends_list[i].NATping_id, 0); /*0 is request*/
friends_list[i].NATping_timestamp = temp_time;
}
} else if(friends_list[i].punching_timestamp + PUNCH_INTERVAL < temp_time) {
if(friends_list[i].hole_punching == 1 &&
friends_list[i].punching_timestamp + PUNCH_INTERVAL < temp_time &&
friends_list[i].recvNATping_timestamp + PUNCH_INTERVAL*2 >= temp_time) {
IP ip = NAT_commonip(ip_list, num, MAX_FRIEND_CLIENTS/2);
if(ip.i == 0)
continue;