diff options
Diffstat (limited to 'toxcore')
-rw-r--r-- | toxcore/net_crypto.c | 103 | ||||
-rw-r--r-- | toxcore/net_crypto.h | 16 |
2 files changed, 101 insertions, 18 deletions
diff --git a/toxcore/net_crypto.c b/toxcore/net_crypto.c index b95791f1..9d0b6cca 100644 --- a/toxcore/net_crypto.c +++ b/toxcore/net_crypto.c | |||
@@ -693,7 +693,7 @@ static int64_t send_lossless_packet(Net_Crypto *c, int crypt_connection_id, uint | |||
693 | return -1; | 693 | return -1; |
694 | 694 | ||
695 | if (send_data_packet_helper(c, crypt_connection_id, conn->recv_array.buffer_start, packet_num, data, length) != 0) | 695 | if (send_data_packet_helper(c, crypt_connection_id, conn->recv_array.buffer_start, packet_num, data, length) != 0) |
696 | printf("send_data_packet failed\n"); | 696 | fprintf(stderr, "send_data_packet failed\n"); |
697 | 697 | ||
698 | return packet_num; | 698 | return packet_num; |
699 | } | 699 | } |
@@ -776,14 +776,17 @@ static int send_request_packet(Net_Crypto *c, int crypt_connection_id) | |||
776 | */ | 776 | */ |
777 | static int send_requested_packets(Net_Crypto *c, int crypt_connection_id, uint16_t max_num) | 777 | static int send_requested_packets(Net_Crypto *c, int crypt_connection_id, uint16_t max_num) |
778 | { | 778 | { |
779 | if (max_num == 0) | ||
780 | return -1; | ||
781 | |||
779 | Crypto_Connection *conn = get_crypto_connection(c, crypt_connection_id); | 782 | Crypto_Connection *conn = get_crypto_connection(c, crypt_connection_id); |
780 | 783 | ||
781 | if (conn == 0) | 784 | if (conn == 0) |
782 | return -1; | 785 | return -1; |
783 | 786 | ||
784 | uint32_t i, num_sent = 0; | 787 | uint32_t i, num_sent = 0, array_size = num_packets_array(&conn->send_array); |
785 | 788 | ||
786 | for (i = 0; i < max_num; ++i) { | 789 | for (i = 0; i < array_size; ++i) { |
787 | Packet_Data *dt; | 790 | Packet_Data *dt; |
788 | uint32_t packet_num = (i + conn->send_array.buffer_start); | 791 | uint32_t packet_num = (i + conn->send_array.buffer_start); |
789 | int ret = get_data_pointer(&conn->send_array, &dt, packet_num); | 792 | int ret = get_data_pointer(&conn->send_array, &dt, packet_num); |
@@ -803,6 +806,9 @@ static int send_requested_packets(Net_Crypto *c, int crypt_connection_id, uint16 | |||
803 | if (send_data_packet_helper(c, crypt_connection_id, conn->recv_array.buffer_start, packet_num, dt->data, | 806 | if (send_data_packet_helper(c, crypt_connection_id, conn->recv_array.buffer_start, packet_num, dt->data, |
804 | dt->length) == 0) | 807 | dt->length) == 0) |
805 | ++num_sent; | 808 | ++num_sent; |
809 | |||
810 | if (num_sent >= max_num) | ||
811 | break; | ||
806 | } | 812 | } |
807 | 813 | ||
808 | return num_sent; | 814 | return num_sent; |
@@ -957,8 +963,9 @@ static int handle_data_packet_helper(Net_Crypto *c, int crypt_connection_id, uin | |||
957 | int requested = handle_request_packet(&conn->send_array, real_data, real_length); | 963 | int requested = handle_request_packet(&conn->send_array, real_data, real_length); |
958 | 964 | ||
959 | if (requested == -1) { | 965 | if (requested == -1) { |
960 | printf("fail %u %u\n", real_data[0], real_length); | ||
961 | return -1; | 966 | return -1; |
967 | } else { | ||
968 | //TODO? | ||
962 | } | 969 | } |
963 | 970 | ||
964 | set_buffer_end(&conn->recv_array, num); | 971 | set_buffer_end(&conn->recv_array, num); |
@@ -977,15 +984,8 @@ static int handle_data_packet_helper(Net_Crypto *c, int crypt_connection_id, uin | |||
977 | dt.length); | 984 | dt.length); |
978 | } | 985 | } |
979 | 986 | ||
980 | //send a data request packet for every x number of data packets recieved. | 987 | /* Packet counter. */ |
981 | ++conn->packet_counter; | 988 | ++conn->packet_counter; |
982 | |||
983 | if (conn->packet_counter > (CRYPTO_PACKET_BUFFER_SIZE / 4)) { | ||
984 | if (send_request_packet(c, crypt_connection_id) != 0) | ||
985 | return -1; | ||
986 | |||
987 | conn->packet_counter = 0; | ||
988 | } | ||
989 | } | 989 | } |
990 | 990 | ||
991 | if (conn->status == CRYPTO_CONN_NOT_CONFIRMED) { | 991 | if (conn->status == CRYPTO_CONN_NOT_CONFIRMED) { |
@@ -1291,6 +1291,7 @@ int accept_crypto_connection(Net_Crypto *c, New_Connection *n_c) | |||
1291 | 1291 | ||
1292 | send_temp_packet(c, crypt_connection_id); | 1292 | send_temp_packet(c, crypt_connection_id); |
1293 | conn->status = CRYPTO_CONN_NOT_CONFIRMED; | 1293 | conn->status = CRYPTO_CONN_NOT_CONFIRMED; |
1294 | conn->packet_send_rate = CRYPTO_PACKET_MIN_RATE; | ||
1294 | crypto_connection_add_source(c, crypt_connection_id, n_c->source); | 1295 | crypto_connection_add_source(c, crypt_connection_id, n_c->source); |
1295 | return crypt_connection_id; | 1296 | return crypt_connection_id; |
1296 | } | 1297 | } |
@@ -1322,6 +1323,7 @@ int new_crypto_connection(Net_Crypto *c, uint8_t *real_public_key) | |||
1322 | random_nonce(conn->sent_nonce); | 1323 | random_nonce(conn->sent_nonce); |
1323 | crypto_box_keypair(conn->sessionpublic_key, conn->sessionsecret_key); | 1324 | crypto_box_keypair(conn->sessionpublic_key, conn->sessionsecret_key); |
1324 | conn->status = CRYPTO_CONN_COOKIE_REQUESTING; | 1325 | conn->status = CRYPTO_CONN_COOKIE_REQUESTING; |
1326 | conn->packet_send_rate = CRYPTO_PACKET_MIN_RATE; | ||
1325 | return crypt_connection_id; | 1327 | return crypt_connection_id; |
1326 | } | 1328 | } |
1327 | 1329 | ||
@@ -1482,6 +1484,14 @@ static int udp_handle_packet(void *object, IP_Port source, uint8_t *packet, uint | |||
1482 | return 0; | 1484 | return 0; |
1483 | } | 1485 | } |
1484 | 1486 | ||
1487 | /* The dT for the average packet recieving rate calculations. | ||
1488 | Also used as the */ | ||
1489 | #define PACKET_COUNTER_AVERAGE_INTERVAL 200 | ||
1490 | |||
1491 | /* Ratio of recv queue size / recv packet rate (in seconds) times | ||
1492 | * the number of ms between request packets to send at that ratio | ||
1493 | */ | ||
1494 | #define REQUEST_PACKETS_COMPARE_CONSTANT (0.5 * 100.0) | ||
1485 | static void send_crypto_packets(Net_Crypto *c) | 1495 | static void send_crypto_packets(Net_Crypto *c) |
1486 | { | 1496 | { |
1487 | uint32_t i; | 1497 | uint32_t i; |
@@ -1505,8 +1515,58 @@ static void send_crypto_packets(Net_Crypto *c) | |||
1505 | 1515 | ||
1506 | } | 1516 | } |
1507 | 1517 | ||
1508 | //TODO | 1518 | if (conn->status == CRYPTO_CONN_ESTABLISHED) { |
1509 | send_requested_packets(c, i, ~0); | 1519 | if (((double)num_packets_array(&conn->recv_array) / (conn->packet_recv_rate + 1.0)) * (double)( |
1520 | temp_time - conn->last_request_packet_sent) > REQUEST_PACKETS_COMPARE_CONSTANT) { | ||
1521 | if (send_request_packet(c, i) == 0) { | ||
1522 | conn->last_request_packet_sent = temp_time; | ||
1523 | } | ||
1524 | } | ||
1525 | |||
1526 | if ((PACKET_COUNTER_AVERAGE_INTERVAL + conn->packet_counter_set) < temp_time) { | ||
1527 | conn->packet_recv_rate = (double)conn->packet_counter / ((double)(temp_time - conn->packet_counter_set) / 1000.0); | ||
1528 | conn->packet_counter = 0; | ||
1529 | conn->packet_counter_set = temp_time; | ||
1530 | |||
1531 | if ((double)num_packets_array(&conn->send_array) < 0.3 * (conn->packet_send_rate)) { | ||
1532 | conn->packet_send_rate *= 1.2; | ||
1533 | } else if ((double)num_packets_array(&conn->send_array) > 0.5 * (conn->packet_send_rate)) { | ||
1534 | conn->packet_send_rate *= 0.8; | ||
1535 | } | ||
1536 | |||
1537 | if (conn->packet_send_rate < CRYPTO_PACKET_MIN_RATE || !conn->sending) | ||
1538 | conn->packet_send_rate = CRYPTO_PACKET_MIN_RATE; | ||
1539 | |||
1540 | if (conn->packet_send_rate > CRYPTO_PACKET_BUFFER_SIZE * 8) | ||
1541 | conn->packet_send_rate = CRYPTO_PACKET_BUFFER_SIZE * 8; | ||
1542 | |||
1543 | } | ||
1544 | |||
1545 | if (conn->last_packets_left_set == 0) { | ||
1546 | conn->last_packets_left_set = temp_time; | ||
1547 | conn->packets_left = conn->packet_send_rate; | ||
1548 | } else if (((1000.0 / conn->packet_send_rate) + conn->last_packets_left_set) < temp_time) { | ||
1549 | uint32_t num_packets = conn->packet_send_rate * ((double)(temp_time - conn->last_packets_left_set) / 1000.0); | ||
1550 | |||
1551 | if (conn->packets_left > num_packets * 2 + CRYPTO_MIN_QUEUE_LENGTH) { | ||
1552 | conn->packets_left = num_packets * 2 + CRYPTO_MIN_QUEUE_LENGTH; | ||
1553 | } else { | ||
1554 | conn->packets_left += num_packets; | ||
1555 | } | ||
1556 | |||
1557 | conn->last_packets_left_set = temp_time; | ||
1558 | } | ||
1559 | |||
1560 | int ret = send_requested_packets(c, i, conn->packets_left); | ||
1561 | |||
1562 | if (ret != -1) { | ||
1563 | conn->packets_left -= ret; | ||
1564 | } | ||
1565 | |||
1566 | if (conn->sending != 0 && num_packets_array(&conn->send_array) < CRYPTO_MIN_QUEUE_LENGTH) { | ||
1567 | --conn->sending; | ||
1568 | } | ||
1569 | } | ||
1510 | } | 1570 | } |
1511 | } | 1571 | } |
1512 | 1572 | ||
@@ -1521,8 +1581,7 @@ uint32_t crypto_num_free_sendqueue_slots(Net_Crypto *c, int crypt_connection_id) | |||
1521 | if (conn == 0) | 1581 | if (conn == 0) |
1522 | return 0; | 1582 | return 0; |
1523 | 1583 | ||
1524 | //TODO | 1584 | return conn->packets_left; |
1525 | return CRYPTO_PACKET_BUFFER_SIZE - num_packets_array(&conn->send_array); | ||
1526 | } | 1585 | } |
1527 | 1586 | ||
1528 | 1587 | ||
@@ -1547,7 +1606,17 @@ int64_t write_cryptpacket(Net_Crypto *c, int crypt_connection_id, uint8_t *data, | |||
1547 | if (conn->status != CRYPTO_CONN_ESTABLISHED) | 1606 | if (conn->status != CRYPTO_CONN_ESTABLISHED) |
1548 | return -1; | 1607 | return -1; |
1549 | 1608 | ||
1550 | return send_lossless_packet(c, crypt_connection_id, data, length); | 1609 | if (conn->packets_left == 0) |
1610 | return -1; | ||
1611 | |||
1612 | int64_t ret = send_lossless_packet(c, crypt_connection_id, data, length); | ||
1613 | |||
1614 | if (ret == -1) | ||
1615 | return -1; | ||
1616 | |||
1617 | --conn->packets_left; | ||
1618 | conn->sending = CRYPTO_MIN_QUEUE_LENGTH; | ||
1619 | return ret; | ||
1551 | } | 1620 | } |
1552 | 1621 | ||
1553 | /* Kill a crypto connection. | 1622 | /* Kill a crypto connection. |
diff --git a/toxcore/net_crypto.h b/toxcore/net_crypto.h index b06fcb10..ba5ed924 100644 --- a/toxcore/net_crypto.h +++ b/toxcore/net_crypto.h | |||
@@ -33,7 +33,13 @@ | |||
33 | #define CRYPTO_CONN_ESTABLISHED 4 | 33 | #define CRYPTO_CONN_ESTABLISHED 4 |
34 | #define CRYPTO_CONN_TIMED_OUT 5 | 34 | #define CRYPTO_CONN_TIMED_OUT 5 |
35 | 35 | ||
36 | #define CRYPTO_PACKET_BUFFER_SIZE 128 /* Must be a power of 2 */ | 36 | #define CRYPTO_PACKET_BUFFER_SIZE 16384 /* Must be a power of 2 */ |
37 | |||
38 | /* Minimum packet rate per second. */ | ||
39 | #define CRYPTO_PACKET_MIN_RATE 40.0 | ||
40 | |||
41 | /* Minimum packet queue max length. */ | ||
42 | #define CRYPTO_MIN_QUEUE_LENGTH 8 | ||
37 | 43 | ||
38 | #define MAX_CRYPTO_PACKET_SIZE 1400 | 44 | #define MAX_CRYPTO_PACKET_SIZE 1400 |
39 | 45 | ||
@@ -105,6 +111,14 @@ typedef struct { | |||
105 | uint64_t last_request_packet_sent; | 111 | uint64_t last_request_packet_sent; |
106 | 112 | ||
107 | uint32_t packet_counter; | 113 | uint32_t packet_counter; |
114 | double packet_recv_rate; | ||
115 | uint64_t packet_counter_set; | ||
116 | |||
117 | double packet_send_rate; | ||
118 | uint32_t packets_left; | ||
119 | uint64_t last_packets_left_set; | ||
120 | |||
121 | uint8_t sending; /* indicates if data is being sent or not. */ | ||
108 | } Crypto_Connection; | 122 | } Crypto_Connection; |
109 | 123 | ||
110 | typedef struct { | 124 | typedef struct { |