aboutsummaryrefslogtreecommitdiff
path: root/po/hu/minetest.po
Commit message (Collapse)AuthorAge
* Translated using Weblate (Hungarian)Balázs Kovács2022-01-30
| | | | Currently translated at 86.0% (1219 of 1416 strings)
* Update translationsupdatepo.sh2022-01-25
|
* Translated using Weblate (Hungarian)Balázs Kovács2022-01-25
| | | | Currently translated at 85.5% (1210 of 1415 strings)
* Translated using Weblate (Hungarian)Kisbenedek Márton2022-01-25
| | | | Currently translated at 79.9% (1131 of 1415 strings)
* Translated using Weblate (Hungarian)pampogo kiraly2022-01-25
| | | | Currently translated at 79.7% (1129 of 1415 strings)
* Update translation filesupdatepo.sh2021-11-27
|
* Translated using Weblate (Hungarian)Ács Zoltán2021-11-27
| | | | Currently translated at 81.9% (1144 of 1396 strings)
* Update translation filesupdatepo.sh2021-06-16
|
* Translated using Weblate (Hungarian)Hatlábú Farkas2021-06-16
| | | | Currently translated at 75.8% (1028 of 1356 strings)
* Update translation filesupdatepo.sh2021-02-23
|
* Translated using Weblate (Hungarian)Ács Zoltán2021-02-23
| | | | Currently translated at 75.7% (1025 of 1353 strings)
* Update translation filesupdatepo.sh2021-01-30
|
* Translated using Weblate (Hungarian)Ács Zoltán2021-01-30
| | | | Currently translated at 77.8% (1051 of 1350 strings)
* Translated using Weblate (Hungarian)Ács Zoltán2020-07-08
| | | | Currently translated at 77.1% (1042 of 1350 strings)
* Update translation filesupdatepo.sh2020-06-13
|
* Translated using Weblate (Hungarian)Ács Zoltán2020-06-13
| | | | Currently translated at 70.8% (912 of 1288 strings)
* Translated using Weblate (Hungarian)Balázs Vámos2020-06-13
| | | | Currently translated at 70.7% (911 of 1288 strings)
* Translated using Weblate (Hungarian)An0n3m0us2020-06-13
| | | | Currently translated at 69.9% (901 of 1288 strings)
* Translated using Weblate (Hungarian)Larissa Piklor2020-06-13
| | | | Currently translated at 69.8% (900 of 1288 strings)
* Translated using Weblate (Hungarian)Ács Zoltán2020-06-13
| | | | Currently translated at 69.6% (897 of 1288 strings)
* Update translation filesupdatepo.sh2020-04-03
|
* Translated using Weblate (Hungarian)sfan52020-04-03
| | | | Currently translated at 59.6% (768 of 1288 strings)
* Translated using Weblate (Hungarian)Ács Zoltán2020-04-03
| | | | Currently translated at 59.5% (767 of 1288 strings)
* Translated using Weblate (Hungarian)An0n3m0us2020-04-03
| | | | Currently translated at 59.7% (769 of 1288 strings)
* Update translation sourcesrubenwardy2020-01-24
|
* Translated using Weblate (Hungarian)Ács Zoltán2020-01-24
| | | | Currently translated at 61.9% (789 of 1274 strings)
* Translated using Weblate (Hungarian)Krock2020-01-24
| | | | Currently translated at 61.9% (788 of 1274 strings)
* Translated using Weblate (Hungarian)Ács Zoltán2020-01-24
| | | | Currently translated at 61.9% (788 of 1274 strings)
* Update translation stringsupdatepo.sh2019-10-12
|
* Update from Weblate (hacky)Translators2019-10-12
|
* Update translation stringsupdatepo.sh2019-09-09
|
* Update from WeblateTranslators2019-09-09
|
* Run updatepo.shTranslations2019-02-24
|
* Update translationsTranslations2019-02-24
|
* Update minetest.conf.example, settings strings and locale files (#8230)Wuzzy2019-02-14
|
* Run updatepo.shTranslation2019-02-14
|
* Update translationsTranslations2019-02-14
|
* Cleanup translation filesLoïc Blot2019-01-28
| | | | These were broken on the previous commits
* Update translationsTranslations2019-01-27
|
* Run updatepo.shTranslations2019-01-06
|
* Update translations from WeblateTranslations2019-01-06
|
* Update minetest.conf.example and run updatepo.sh (#7947)Update Script2018-12-09
|
* Add translation of LANG_CODE in all languagesEkdohibs2017-08-24
|
* Fix updatepo.sh and run it.Ekdohibs2017-08-24
| | | | It was broken due to the presence of "µ" utf-8 characters in builtin/profiler/reporter.lua.
* Run updatepo.shLoic Blot2017-05-21
|
* Footsteps without view bobbing (#5645)Louis Pearson2017-04-25
| | | | | | | | | | | | * Remove redundant view_bobbing setting Also fixes bug where disabling view_bobbing disables footstep sounds. * Removes redundant view_bobbing setting Setting view_bobbing amount to 0 is now the only way to turn view_bobbing on and off. Also fixed a bug where footstep sounds would not play when view_bobbing was disabled.
* Run updatepo.shest312016-12-14
|
* Run updatepo.shest312016-08-30
|
* Run updatepo.shest312016-07-12
|
* Translated using Weblate (Hungarian)Kisbenedek Márton2016-05-10
| | | | Currently translated at 75.7% (672 of 887 strings)
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-27 08:30:25 +0000
801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 
/*
Minetest
Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/

#include <iomanip>
#include <cerrno>
#include <algorithm>
#include <cmath>
#include "connection.h"
#include "serialization.h"
#include "log.h"
#include "porting.h"
#include "network/connectionthreads.h"
#include "network/networkpacket.h"
#include "network/peerhandler.h"
#include "util/serialize.h"
#include "util/numeric.h"
#include "util/string.h"
#include "settings.h"
#include "profiler.h"

namespace con
{

/******************************************************************************/
/* defines used for debugging and profiling                                   */
/******************************************************************************/
#ifdef NDEBUG
	#define LOG(a) a
	#define PROFILE(a)
#else
	#if 0
	/* this mutex is used to achieve log message consistency */
	std::mutex log_message_mutex;
	#define LOG(a)                                                                 \
		{                                                                          \
		MutexAutoLock loglock(log_message_mutex);                                 \
		a;                                                                         \
		}
	#else
	// Prevent deadlocks until a solution is found after 5.2.0 (TODO)
	#define LOG(a) a
	#endif

	#define PROFILE(a) a
#endif

#define PING_TIMEOUT 5.0

u16 BufferedPacket::getSeqnum() const
{
	if (size() < BASE_HEADER_SIZE + 3)
		return 0; // should never happen

	return readU16(&data[BASE_HEADER_SIZE + 1]);
}

BufferedPacketPtr makePacket(Address &address, const SharedBuffer<u8> &data,
		u32 protocol_id, session_t sender_peer_id, u8 channel)
{
	u32 packet_size = data.getSize() + BASE_HEADER_SIZE;

	BufferedPacketPtr p(new BufferedPacket(packet_size));
	p->address = address;

	writeU32(&p->data[0], protocol_id);
	writeU16(&p->data[4], sender_peer_id);
	writeU8(&p->data[6], channel);

	memcpy(&p->data[BASE_HEADER_SIZE], *data, data.getSize());

	return p;
}

SharedBuffer<u8> makeOriginalPacket(const SharedBuffer<u8> &data)
{
	u32 header_size = 1;
	u32 packet_size = data.getSize() + header_size;
	SharedBuffer<u8> b(packet_size);

	writeU8(&(b[0]), PACKET_TYPE_ORIGINAL);
	if (data.getSize() > 0) {
		memcpy(&(b[header_size]), *data, data.getSize());
	}
	return b;
}

// Split data in chunks and add TYPE_SPLIT headers to them
void makeSplitPacket(const SharedBuffer<u8> &data, u32 chunksize_max, u16 seqnum,
		std::list<SharedBuffer<u8>> *chunks)
{
	// Chunk packets, containing the TYPE_SPLIT header
	u32 chunk_header_size = 7;
	u32 maximum_data_size = chunksize_max - chunk_header_size;
	u32 start = 0;
	u32 end = 0;
	u32 chunk_num = 0;
	u16 chunk_count = 0;
	do {
		end = start + maximum_data_size - 1;
		if (end > data.getSize() - 1)
			end = data.getSize() - 1;

		u32 payload_size = end - start + 1;
		u32 packet_size = chunk_header_size + payload_size;

		SharedBuffer<u8> chunk(packet_size);

		writeU8(&chunk[0], PACKET_TYPE_SPLIT);
		writeU16(&chunk[1], seqnum);
		// [3] u16 chunk_count is written at next stage
		writeU16(&chunk[5], chunk_num);
		memcpy(&chunk[chunk_header_size], &data[start], payload_size);

		chunks->push_back(chunk);
		chunk_count++;

		start = end + 1;
		chunk_num++;
	}
	while (end != data.getSize() - 1);

	for (SharedBuffer<u8> &chunk : *chunks) {
		// Write chunk_count
		writeU16(&(chunk[3]), chunk_count);
	}
}

void makeAutoSplitPacket(const SharedBuffer<u8> &data, u32 chunksize_max,
		u16 &split_seqnum, std::list<SharedBuffer<u8>> *list)
{
	u32 original_header_size = 1;

	if (data.getSize() + original_header_size > chunksize_max) {
		makeSplitPacket(data, chunksize_max, split_seqnum, list);
		split_seqnum++;
		return;
	}

	list->push_back(makeOriginalPacket(data));
}

SharedBuffer<u8> makeReliablePacket(const SharedBuffer<u8> &data, u16 seqnum)
{
	u32 header_size = 3;
	u32 packet_size = data.getSize() + header_size;
	SharedBuffer<u8> b(packet_size);

	writeU8(&b[0], PACKET_TYPE_RELIABLE);
	writeU16(&b[1], seqnum);

	memcpy(&b[header_size], *data, data.getSize());

	return b;
}

/*
	ReliablePacketBuffer
*/

void ReliablePacketBuffer::print()
{
	MutexAutoLock listlock(m_list_mutex);
	LOG(dout_con<<"Dump of ReliablePacketBuffer:" << std::endl);
	unsigned int index = 0;
	for (BufferedPacketPtr &packet : m_list) {
		LOG(dout_con<<index<< ":" << packet->getSeqnum() << std::endl);
		index++;
	}
}

bool ReliablePacketBuffer::empty()
{
	MutexAutoLock listlock(m_list_mutex);
	return m_list.empty();
}

u32 ReliablePacketBuffer::size()
{
	MutexAutoLock listlock(m_list_mutex);
	return m_list.size();
}

RPBSearchResult ReliablePacketBuffer::findPacketNoLock(u16 seqnum)
{
	for (auto it = m_list.begin(); it != m_list.end(); ++it) {
		if ((*it)->getSeqnum() == seqnum)
			return it;
	}
	return m_list.end();
}

bool ReliablePacketBuffer::getFirstSeqnum(u16& result)
{
	MutexAutoLock listlock(m_list_mutex);
	if (m_list.empty())
		return false;
	result = m_list.front()->getSeqnum();
	return true;
}

BufferedPacketPtr ReliablePacketBuffer::popFirst()
{
	MutexAutoLock listlock(m_list_mutex);
	if (m_list.empty())
		throw NotFoundException("Buffer is empty");

	BufferedPacketPtr p(m_list.front());
	m_list.pop_front();

	if (m_list.empty()) {
		m_oldest_non_answered_ack = 0;
	} else {
		m_oldest_non_answered_ack = m_list.front()->getSeqnum();
	}
	return p;
}

BufferedPacketPtr ReliablePacketBuffer::popSeqnum(u16 seqnum)
{
	MutexAutoLock listlock(m_list_mutex);
	RPBSearchResult r = findPacketNoLock(seqnum);
	if (r == m_list.end()) {
		LOG(dout_con<<"Sequence number: " << seqnum
				<< " not found in reliable buffer"<<std::endl);
		throw NotFoundException("seqnum not found in buffer");
	}

	BufferedPacketPtr p(*r);
	m_list.erase(r);

	if (m_list.empty()) {
		m_oldest_non_answered_ack = 0;
	} else {
		m_oldest_non_answered_ack = m_list.front()->getSeqnum();
	}
	return p;
}

void ReliablePacketBuffer::insert(BufferedPacketPtr &p_ptr, u16 next_expected)
{
	MutexAutoLock listlock(m_list_mutex);
	const BufferedPacket &p = *p_ptr;

	if (p.size() < BASE_HEADER_SIZE + 3) {
		errorstream << "ReliablePacketBuffer::insert(): Invalid data size for "
			"reliable packet" << std::endl;
		return;
	}
	u8 type = readU8(&p.data[BASE_HEADER_SIZE + 0]);
	if (type != PACKET_TYPE_RELIABLE) {
		errorstream << "ReliablePacketBuffer::insert(): type is not reliable"
			<< std::endl;
		return;
	}
	const u16 seqnum = p.getSeqnum();

	if (!seqnum_in_window(seqnum, next_expected, MAX_RELIABLE_WINDOW_SIZE)) {
		errorstream << "ReliablePacketBuffer::insert(): seqnum is outside of "
			"expected window " << std::endl;
		return;
	}
	if (seqnum == next_expected) {
		errorstream << "ReliablePacketBuffer::insert(): seqnum is next expected"
			<< std::endl;
		return;
	}

	sanity_check(m_list.size() <= SEQNUM_MAX); // FIXME: Handle the error?

	// Find the right place for the packet and insert it there
	// If list is empty, just add it
	if (m_list.empty()) {
		m_list.push_back(p_ptr);
		m_oldest_non_answered_ack = seqnum;
		// Done.
		return;
	}

	// Otherwise find the right place
	auto it = m_list.begin();
	// Find the first packet in the list which has a higher seqnum
	u16 s = (*it)->getSeqnum();

	/* case seqnum is smaller then next_expected seqnum */
	/* this is true e.g. on wrap around */
	if (seqnum < next_expected) {
		while(((s < seqnum) || (s >= next_expected)) && (it != m_list.end())) {
			++it;
			if (it != m_list.end())
				s = (*it)->getSeqnum();
		}
	}
	/* non wrap around case (at least for incoming and next_expected */
	else
	{
		while(((s < seqnum) && (s >= next_expected)) && (it != m_list.end())) {
			++it;
			if (it != m_list.end())
				s = (*it)->getSeqnum();
		}
	}

	if (s == seqnum) {
		/* nothing to do this seems to be a resent packet */
		/* for paranoia reason data should be compared */
		auto &i = *it;
		if (
			(i->getSeqnum() != seqnum) ||
			(i->size() != p.size()) ||
			(i->address != p.address)
			)
		{
			/* if this happens your maximum transfer window may be to big */
			fprintf(stderr,
					"Duplicated seqnum %d non matching packet detected:\n",
					seqnum);
			fprintf(stderr, "Old: seqnum: %05d size: %04zu, address: %s\n",
					i->getSeqnum(), i->size(),
					i->address.serializeString().c_str());
			fprintf(stderr, "New: seqnum: %05d size: %04zu, address: %s\n",
					p.getSeqnum(), p.size(),
					p.address.serializeString().c_str());
			throw IncomingDataCorruption("duplicated packet isn't same as original one");
		}
	}
	/* insert or push back */
	else if (it != m_list.end()) {
		m_list.insert(it, p_ptr);
	} else {
		m_list.push_back(p_ptr);
	}

	/* update last packet number */
	m_oldest_non_answered_ack = m_list.front()->getSeqnum();
}

void ReliablePacketBuffer::incrementTimeouts(float dtime)
{
	MutexAutoLock listlock(m_list_mutex);
	for (auto &packet : m_list) {
		packet->time += dtime;
		packet->totaltime += dtime;
	}
}

std::list<ConstSharedPtr<BufferedPacket>>
	ReliablePacketBuffer::getTimedOuts(float timeout, u32 max_packets)
{
	MutexAutoLock listlock(m_list_mutex);
	std::list<ConstSharedPtr<BufferedPacket>> timed_outs;
	for (auto &packet : m_list) {
		if (packet->time < timeout)
			continue;

		// caller will resend packet so reset time and increase counter
		packet->time = 0.0f;
		packet->resend_count++;

		timed_outs.emplace_back(packet);

		if (timed_outs.size() >= max_packets)
			break;
	}
	return timed_outs;
}

/*
	IncomingSplitPacket
*/

bool IncomingSplitPacket::insert(u32 chunk_num, SharedBuffer<u8> &chunkdata)
{
	sanity_check(chunk_num < chunk_count);

	// If chunk already exists, ignore it.
	// Sometimes two identical packets may arrive when there is network
	// lag and the server re-sends stuff.
	if (chunks.find(chunk_num) != chunks.end())
		return false;

	// Set chunk data in buffer
	chunks[chunk_num] = chunkdata;

	return true;
}

SharedBuffer<u8> IncomingSplitPacket::reassemble()
{
	sanity_check(allReceived());

	// Calculate total size
	u32 totalsize = 0;
	for (const auto &chunk : chunks)
		totalsize += chunk.second.getSize();

	SharedBuffer<u8> fulldata(totalsize);

	// Copy chunks to data buffer
	u32 start = 0;
	for (u32 chunk_i = 0; chunk_i < chunk_count; chunk_i++) {
		const SharedBuffer<u8> &buf = chunks[chunk_i];
		memcpy(&fulldata[start], *buf, buf.getSize());
		start += buf.getSize();
	}

	return fulldata;
}

/*
	IncomingSplitBuffer
*/

IncomingSplitBuffer::~IncomingSplitBuffer()
{
	MutexAutoLock listlock(m_map_mutex);
	for (auto &i : m_buf) {
		delete i.second;
	}
}

SharedBuffer<u8> IncomingSplitBuffer::insert(BufferedPacketPtr &p_ptr, bool reliable)
{
	MutexAutoLock listlock(m_map_mutex);
	const BufferedPacket &p = *p_ptr;

	u32 headersize = BASE_HEADER_SIZE + 7;
	if (p.size() < headersize) {
		errorstream << "Invalid data size for split packet" << std::endl;
		return SharedBuffer<u8>();
	}
	u8 type = readU8(&p.data[BASE_HEADER_SIZE+0]);
	u16 seqnum = readU16(&p.data[BASE_HEADER_SIZE+1]);
	u16 chunk_count = readU16(&p.data[BASE_HEADER_SIZE+3]);
	u16 chunk_num = readU16(&p.data[BASE_HEADER_SIZE+5]);

	if (type != PACKET_TYPE_SPLIT) {
		errorstream << "IncomingSplitBuffer::insert(): type is not split"
			<< std::endl;
		return SharedBuffer<u8>();
	}
	if (chunk_num >= chunk_count) {
		errorstream << "IncomingSplitBuffer::insert(): chunk_num=" << chunk_num
				<< " >= chunk_count=" << chunk_count << std::endl;
		return SharedBuffer<u8>();
	}

	// Add if doesn't exist
	IncomingSplitPacket *sp;
	if (m_buf.find(seqnum) == m_buf.end()) {
		sp = new IncomingSplitPacket(chunk_count, reliable);
		m_buf[seqnum] = sp;
	} else {
		sp = m_buf[seqnum];
	}

	if (chunk_count != sp->chunk_count) {
		errorstream << "IncomingSplitBuffer::insert(): chunk_count="
				<< chunk_count << " != sp->chunk_count=" << sp->chunk_count
				<< std::endl;
		return SharedBuffer<u8>();
	}
	if (reliable != sp->reliable)
		LOG(derr_con<<"Connection: WARNING: reliable="<<reliable
				<<" != sp->reliable="<<sp->reliable
				<<std::endl);

	// Cut chunk data out of packet
	u32 chunkdatasize = p.size() - headersize;
	SharedBuffer<u8> chunkdata(chunkdatasize);
	memcpy(*chunkdata, &(p.data[headersize]), chunkdatasize);

	if (!sp->insert(chunk_num, chunkdata))
		return SharedBuffer<u8>();

	// If not all chunks are received, return empty buffer
	if (!sp->allReceived())
		return SharedBuffer<u8>();

	SharedBuffer<u8> fulldata = sp->reassemble();

	// Remove sp from buffer
	m_buf.erase(seqnum);
	delete sp;

	return fulldata;
}

void IncomingSplitBuffer::removeUnreliableTimedOuts(float dtime, float timeout)
{
	std::deque<u16> remove_queue;
	{
		MutexAutoLock listlock(m_map_mutex);
		for (auto &i : m_buf) {
			IncomingSplitPacket *p = i.second;
			// Reliable ones are not removed by timeout
			if (p->reliable)
				continue;
			p->time += dtime;
			if (p->time >= timeout)
				remove_queue.push_back(i.first);
		}
	}
	for (u16 j : remove_queue) {
		MutexAutoLock listlock(m_map_mutex);
		LOG(dout_con<<"NOTE: Removing timed out unreliable split packet"<<std::endl);
		delete m_buf[j];
		m_buf.erase(j);
	}
}

/*
	ConnectionCommand
 */

ConnectionCommandPtr ConnectionCommand::create(ConnectionCommandType type)
{
	return ConnectionCommandPtr(new ConnectionCommand(type));
}

ConnectionCommandPtr ConnectionCommand::serve(Address address)
{
	auto c = create(CONNCMD_SERVE);
	c->address = address;
	return c;
}

ConnectionCommandPtr ConnectionCommand::connect(Address address)
{
	auto c = create(CONNCMD_CONNECT);
	c->address = address;
	return c;
}

ConnectionCommandPtr ConnectionCommand::disconnect()
{
	return create(CONNCMD_DISCONNECT);
}

ConnectionCommandPtr ConnectionCommand::disconnect_peer(session_t peer_id)
{
	auto c = create(CONNCMD_DISCONNECT_PEER);
	c->peer_id = peer_id;
	return c;
}

ConnectionCommandPtr ConnectionCommand::send(session_t peer_id, u8 channelnum,
	NetworkPacket *pkt, bool reliable)
{
	auto c = create(CONNCMD_SEND);
	c->peer_id = peer_id;
	c->channelnum = channelnum;
	c->reliable = reliable;
	c->data = pkt->oldForgePacket();
	return c;
}

ConnectionCommandPtr ConnectionCommand::ack(session_t peer_id, u8 channelnum, const Buffer<u8> &data)
{
	auto c = create(CONCMD_ACK);
	c->peer_id = peer_id;
	c->channelnum = channelnum;
	c->reliable = false;
	data.copyTo(c->data);
	return c;
}

ConnectionCommandPtr ConnectionCommand::createPeer(session_t peer_id, const Buffer<u8> &data)
{
	auto c = create(CONCMD_CREATE_PEER);
	c->peer_id = peer_id;
	c->channelnum = 0;
	c->reliable = true;
	c->raw = true;
	data.copyTo(c->data);
	return c;
}

/*
	Channel
*/

u16 Channel::readNextIncomingSeqNum()
{
	MutexAutoLock internal(m_internal_mutex);
	return next_incoming_seqnum;
}

u16 Channel::incNextIncomingSeqNum()
{
	MutexAutoLock internal(m_internal_mutex);
	u16 retval = next_incoming_seqnum;
	next_incoming_seqnum++;
	return retval;
}

u16 Channel::readNextSplitSeqNum()
{
	MutexAutoLock internal(m_internal_mutex);
	return next_outgoing_split_seqnum;
}
void Channel::setNextSplitSeqNum(u16 seqnum)
{
	MutexAutoLock internal(m_internal_mutex);
	next_outgoing_split_seqnum = seqnum;
}

u16 Channel::getOutgoingSequenceNumber(bool& successful)
{
	MutexAutoLock internal(m_internal_mutex);

	u16 retval = next_outgoing_seqnum;
	successful = false;

	/* shortcut if there ain't any packet in outgoing list */
	if (outgoing_reliables_sent.empty()) {
		successful = true;
		next_outgoing_seqnum++;
		return retval;
	}

	u16 lowest_unacked_seqnumber;
	if (outgoing_reliables_sent.getFirstSeqnum(lowest_unacked_seqnumber)) {
		if (lowest_unacked_seqnumber < next_outgoing_seqnum) {
			// ugly cast but this one is required in order to tell compiler we
			// know about difference of two unsigned may be negative in general
			// but we already made sure it won't happen in this case
			if (((u16)(next_outgoing_seqnum - lowest_unacked_seqnumber)) > m_window_size) {
				return 0;
			}
		} else {
			// ugly cast but this one is required in order to tell compiler we
			// know about difference of two unsigned may be negative in general
			// but we already made sure it won't happen in this case
			if ((next_outgoing_seqnum + (u16)(SEQNUM_MAX - lowest_unacked_seqnumber)) >
					m_window_size) {
				return 0;
			}
		}
	}

	successful = true;
	next_outgoing_seqnum++;
	return retval;
}

u16 Channel::readOutgoingSequenceNumber()
{
	MutexAutoLock internal(m_internal_mutex);
	return next_outgoing_seqnum;
}

bool Channel::putBackSequenceNumber(u16 seqnum)
{
	if (((seqnum + 1) % (SEQNUM_MAX+1)) == next_outgoing_seqnum) {

		next_outgoing_seqnum = seqnum;
		return true;
	}
	return false;
}

void Channel::UpdateBytesSent(unsigned int bytes, unsigned int packets)
{
	MutexAutoLock internal(m_internal_mutex);
	current_bytes_transfered += bytes;
	current_packet_successful += packets;
}

void Channel::UpdateBytesReceived(unsigned int bytes) {
	MutexAutoLock internal(m_internal_mutex);
	current_bytes_received += bytes;
}

void Channel::UpdateBytesLost(unsigned int bytes)
{
	MutexAutoLock internal(m_internal_mutex);
	current_bytes_lost += bytes;
}


void Channel::UpdatePacketLossCounter(unsigned int count)
{
	MutexAutoLock internal(m_internal_mutex);
	current_packet_loss += count;
}

void Channel::UpdatePacketTooLateCounter()
{
	MutexAutoLock internal(m_internal_mutex);
	current_packet_too_late++;
}

void Channel::UpdateTimers(float dtime)
{
	bpm_counter += dtime;
	packet_loss_counter += dtime;

	if (packet_loss_counter > 1.0f) {
		packet_loss_counter -= 1.0f;

		unsigned int packet_loss = 11; /* use a neutral value for initialization */
		unsigned int packets_successful = 0;
		//unsigned int packet_too_late = 0;

		bool reasonable_amount_of_data_transmitted = false;

		{
			MutexAutoLock internal(m_internal_mutex);
			packet_loss = current_packet_loss;
			//packet_too_late = current_packet_too_late;
			packets_successful = current_packet_successful;

			if (current_bytes_transfered > (unsigned int) (m_window_size*512/2)) {
				reasonable_amount_of_data_transmitted = true;
			}
			current_packet_loss = 0;
			current_packet_too_late = 0;
			current_packet_successful = 0;
		}

		/* dynamic window size */
		float successful_to_lost_ratio = 0.0f;
		bool done = false;

		if (packets_successful > 0) {
			successful_to_lost_ratio = packet_loss/packets_successful;
		} else if (packet_loss > 0) {
			setWindowSize(m_window_size - 10);
			done = true;
		}

		if (!done) {
			if (successful_to_lost_ratio < 0.01f) {
				/* don't even think about increasing if we didn't even
				 * use major parts of our window */
				if (reasonable_amount_of_data_transmitted)
					setWindowSize(m_window_size + 100);
			} else if (successful_to_lost_ratio < 0.05f) {
				/* don't even think about increasing if we didn't even
				 * use major parts of our window */
				if (reasonable_amount_of_data_transmitted)
					setWindowSize(m_window_size + 50);
			} else if (successful_to_lost_ratio > 0.15f) {
				setWindowSize(m_window_size - 100);
			} else if (successful_to_lost_ratio > 0.1f) {
				setWindowSize(m_window_size - 50);
			}
		}
	}

	if (bpm_counter > 10.0f) {
		{
			MutexAutoLock internal(m_internal_mutex);
			cur_kbps                 =
					(((float) current_bytes_transfered)/bpm_counter)/1024.0f;
			current_bytes_transfered = 0;
			cur_kbps_lost            =
					(((float) current_bytes_lost)/bpm_counter)/1024.0f;
			current_bytes_lost       = 0;
			cur_incoming_kbps        =
					(((float) current_bytes_received)/bpm_counter)/1024.0f;
			current_bytes_received   = 0;
			bpm_counter              = 0.0f;
		}

		if (cur_kbps > max_kbps) {
			max_kbps = cur_kbps;
		}

		if (cur_kbps_lost > max_kbps_lost) {
			max_kbps_lost = cur_kbps_lost;
		}

		if (cur_incoming_kbps > max_incoming_kbps) {
			max_incoming_kbps = cur_incoming_kbps;
		}

		rate_samples       = MYMIN(rate_samples+1,10);
		float old_fraction = ((float) (rate_samples-1) )/( (float) rate_samples);
		avg_kbps           = avg_kbps * old_fraction +
				cur_kbps * (1.0 - old_fraction);
		avg_kbps_lost      = avg_kbps_lost * old_fraction +
				cur_kbps_lost * (1.0 - old_fraction);
		avg_incoming_kbps  = avg_incoming_kbps * old_fraction +
				cur_incoming_kbps * (1.0 - old_fraction);
	}
}


/*
	Peer
*/

PeerHelper::PeerHelper(Peer* peer) :
	m_peer(peer)
{
	if (peer && !peer->IncUseCount())
		m_peer = nullptr;
}

PeerHelper::~PeerHelper()
{
	if (m_peer)
		m_peer->DecUseCount();

	m_peer = nullptr;
}

PeerHelper& PeerHelper::operator=(Peer* peer)
{
	m_peer = peer;
	if (peer && !peer->IncUseCount())
		m_peer = nullptr;
	return *this;
}

Peer* PeerHelper::operator->() const
{
	return m_peer;
}

Peer* PeerHelper::operator&() const
{
	return m_peer;
}

bool PeerHelper::operator!()
{
	return ! m_peer;
}

bool PeerHelper::operator!=(void* ptr)
{
	return ((void*) m_peer != ptr);
}

bool Peer::IncUseCount()
{
	MutexAutoLock lock(m_exclusive_access_mutex);

	if (!m_pending_deletion) {
		this->m_usage++;
		return true;
	}

	return false;
}

void Peer::DecUseCount()
{
	{
		MutexAutoLock lock(m_exclusive_access_mutex);
		sanity_check(m_usage > 0);
		m_usage--;

		if (!((m_pending_deletion) && (m_usage == 0)))
			return;
	}
	delete this;
}

void Peer::RTTStatistics(float rtt, const std::string &profiler_id,
		unsigned int num_samples) {

	if (m_last_rtt > 0) {
		/* set min max values */
		if (rtt < m_rtt.min_rtt)
			m_rtt.min_rtt = rtt;
		if (rtt >= m_rtt.max_rtt)
			m_rtt.max_rtt = rtt;

		/* do average calculation */
		if (m_rtt.avg_rtt < 0.0)
			m_rtt.avg_rtt  = rtt;
		else
			m_rtt.avg_rtt  = m_rtt.avg_rtt * (num_samples/(num_samples-1)) +
								rtt * (1/num_samples);

		/* do jitter calculation */

		//just use some neutral value at beginning
		float jitter = m_rtt.jitter_min;

		if (rtt > m_last_rtt)
			jitter = rtt-m_last_rtt;

		if (rtt <= m_last_rtt)
			jitter = m_last_rtt - rtt;

		if (jitter < m_rtt.jitter_min)
			m_rtt.jitter_min = jitter;
		if (jitter >= m_rtt.jitter_max)
			m_rtt.jitter_max = jitter;

		if (m_rtt.jitter_avg < 0.0)
			m_rtt.jitter_avg  = jitter;
		else
			m_rtt.jitter_avg  = m_rtt.jitter_avg * (num_samples/(num_samples-1)) +
								jitter * (1/num_samples);

		if (!profiler_id.empty()) {
			g_profiler->graphAdd(profiler_id + " RTT [ms]", rtt * 1000.f);
			g_profiler->graphAdd(profiler_id + " jitter [ms]", jitter * 1000.f);
		}
	}
	/* save values required for next loop */
	m_last_rtt = rtt;
}

bool Peer::isTimedOut(float timeout)
{
	MutexAutoLock lock(m_exclusive_access_mutex);
	u64 current_time = porting::getTimeMs();

	float dtime = CALC_DTIME(m_last_timeout_check,current_time);
	m_last_timeout_check = current_time;

	m_timeout_counter += dtime;

	return m_timeout_counter > timeout;
}

void Peer::Drop()
{
	{
		MutexAutoLock usage_lock(m_exclusive_access_mutex);
		m_pending_deletion = true;
		if (m_usage != 0)
			return;
	}

	PROFILE(std::stringstream peerIdentifier1);
	PROFILE(peerIdentifier1 << "runTimeouts[" << m_connection->getDesc()
			<< ";" << id << ";RELIABLE]");
	PROFILE(g_profiler->remove(peerIdentifier1.str()));
	PROFILE(std::stringstream peerIdentifier2);
	PROFILE(peerIdentifier2 << "sendPackets[" << m_connection->getDesc()
			<< ";" << id << ";RELIABLE]");
	PROFILE(ScopeProfiler peerprofiler(g_profiler, peerIdentifier2.str(), SPT_AVG));

	delete this;
}

UDPPeer::UDPPeer(u16 a_id, Address a_address, Connection* connection) :
	Peer(a_address,a_id,connection)
{
	for (Channel &channel : channels)
		channel.setWindowSize(START_RELIABLE_WINDOW_SIZE);
}

bool UDPPeer::getAddress(MTProtocols type,Address& toset)
{
	if ((type == MTP_UDP) || (type == MTP_MINETEST_RELIABLE_UDP) || (type == MTP_PRIMARY))
	{
		toset = address;
		return true;
	}

	return false;
}

void UDPPeer::reportRTT(float rtt)
{
	if (rtt < 0.0) {
		return;
	}
	RTTStatistics(rtt,"rudp",MAX_RELIABLE_WINDOW_SIZE*10);

	float timeout = getStat(AVG_RTT) * RESEND_TIMEOUT_FACTOR;
	if (timeout < RESEND_TIMEOUT_MIN)
		timeout = RESEND_TIMEOUT_MIN;
	if (timeout > RESEND_TIMEOUT_MAX)
		timeout = RESEND_TIMEOUT_MAX;

	MutexAutoLock usage_lock(m_exclusive_access_mutex);
	resend_timeout = timeout;
}

bool UDPPeer::Ping(float dtime,SharedBuffer<u8>& data)
{
	m_ping_timer += dtime;
	if (m_ping_timer >= PING_TIMEOUT)
	{
		// Create and send PING packet
		writeU8(&data[0], PACKET_TYPE_CONTROL);
		writeU8(&data[1], CONTROLTYPE_PING);
		m_ping_timer = 0.0;
		return true;
	}
	return false;
}

void UDPPeer::PutReliableSendCommand(ConnectionCommandPtr &c,
		unsigned int max_packet_size)
{
	if (m_pending_disconnect)
		return;

	Channel &chan = channels[c->channelnum];

	if (chan.queued_commands.empty() &&
			/* don't queue more packets then window size */
			(chan.queued_reliables.size() + 1 < chan.getWindowSize() / 2)) {
		LOG(dout_con<<m_connection->getDesc()
				<<" processing reliable command for peer id: " << c->peer_id
				<<" data size: " << c->data.getSize() << std::endl);
		if (processReliableSendCommand(c, max_packet_size))
			return;
	} else {
		LOG(dout_con<<m_connection->getDesc()
				<<" Queueing reliable command for peer id: " << c->peer_id
				<<" data size: " << c->data.getSize() <<std::endl);

		if (chan.queued_commands.size() + 1 >= chan.getWindowSize() / 2) {
			LOG(derr_con << m_connection->getDesc()
					<< "Possible packet stall to peer id: " << c->peer_id
					<< " queued_commands=" << chan.queued_commands.size()
					<< std::endl);
		}
	}
	chan.queued_commands.push_back(c);
}

bool UDPPeer::processReliableSendCommand(
				ConnectionCommandPtr &c_ptr,
				unsigned int max_packet_size)
{
	if (m_pending_disconnect)
		return true;

	const auto &c = *c_ptr;
	Channel &chan = channels[c.channelnum];

	u32 chunksize_max = max_packet_size
							- BASE_HEADER_SIZE
							- RELIABLE_HEADER_SIZE;

	sanity_check(c.data.getSize() < MAX_RELIABLE_WINDOW_SIZE*512);

	std::list<SharedBuffer<u8>> originals;
	u16 split_sequence_number = chan.readNextSplitSeqNum();

	if (c.raw) {
		originals.emplace_back(c.data);
	} else {
		makeAutoSplitPacket(c.data, chunksize_max,split_sequence_number, &originals);
		chan.setNextSplitSeqNum(split_sequence_number);
	}

	bool have_sequence_number = false;
	bool have_initial_sequence_number = false;
	std::queue<BufferedPacketPtr> toadd;
	volatile u16 initial_sequence_number = 0;

	for (SharedBuffer<u8> &original : originals) {
		u16 seqnum = chan.getOutgoingSequenceNumber(have_sequence_number);

		/* oops, we don't have enough sequence numbers to send this packet */
		if (!have_sequence_number)
			break;

		if (!have_initial_sequence_number)
		{
			initial_sequence_number = seqnum;
			have_initial_sequence_number = true;
		}

		SharedBuffer<u8> reliable = makeReliablePacket(original, seqnum);

		// Add base headers and make a packet
		BufferedPacketPtr p = con::makePacket(address, reliable,
				m_connection->GetProtocolID(), m_connection->GetPeerID(),
				c.channelnum);

		toadd.push(p);
	}

	if (have_sequence_number) {
		while (!toadd.empty()) {
			BufferedPacketPtr p = toadd.front();
			toadd.pop();
//			LOG(dout_con<<connection->getDesc()
//					<< " queuing reliable packet for peer_id: " << c.peer_id
//					<< " channel: " << (c.channelnum&0xFF)
//					<< " seqnum: " << readU16(&p.data[BASE_HEADER_SIZE+1])
//					<< std::endl)
			chan.queued_reliables.push(p);
		}
		sanity_check(chan.queued_reliables.size() < 0xFFFF);
		return true;
	}

	volatile u16 packets_available = toadd.size();
	/* we didn't get a single sequence number no need to fill queue */
	if (!have_initial_sequence_number) {
		LOG(derr_con << m_connection->getDesc() << "Ran out of sequence numbers!" << std::endl);
		return false;
	}

	while (!toadd.empty()) {
		/* remove packet */
		toadd.pop();

		bool successfully_put_back_sequence_number
			= chan.putBackSequenceNumber(
				(initial_sequence_number+toadd.size() % (SEQNUM_MAX+1)));

		FATAL_ERROR_IF(!successfully_put_back_sequence_number, "error");
	}

	// DO NOT REMOVE n_queued! It avoids a deadlock of async locked
	// 'log_message_mutex' and 'm_list_mutex'.
	u32 n_queued = chan.outgoing_reliables_sent.size();

	LOG(dout_con<<m_connection->getDesc()
			<< " Windowsize exceeded on reliable sending "
			<< c.data.getSize() << " bytes"
			<< std::endl << "\t\tinitial_sequence_number: "
			<< initial_sequence_number
			<< std::endl << "\t\tgot at most            : "
			<< packets_available << " packets"
			<< std::endl << "\t\tpackets queued         : "
			<< n_queued
			<< std::endl);

	return false;
}

void UDPPeer::RunCommandQueues(
							unsigned int max_packet_size,
							unsigned int maxcommands,
							unsigned int maxtransfer)
{

	for (Channel &channel : channels) {
		unsigned int commands_processed = 0;

		if ((!channel.queued_commands.empty()) &&
				(channel.queued_reliables.size() < maxtransfer) &&
				(commands_processed < maxcommands)) {
			try {
				ConnectionCommandPtr c = channel.queued_commands.front();

				LOG(dout_con << m_connection->getDesc()
						<< " processing queued reliable command " << std::endl);

				// Packet is processed, remove it from queue
				if (processReliableSendCommand(c, max_packet_size)) {
					channel.queued_commands.pop_front();
				} else {
					LOG(dout_con << m_connection->getDesc()
							<< " Failed to queue packets for peer_id: " << c->peer_id
							<< ", delaying sending of " << c->data.getSize()
							<< " bytes" << std::endl);
				}
			}
			catch (ItemNotFoundException &e) {
				// intentionally empty
			}
		}
	}
}

u16 UDPPeer::getNextSplitSequenceNumber(u8 channel)
{
	assert(channel < CHANNEL_COUNT); // Pre-condition
	return channels[channel].readNextSplitSeqNum();
}

void UDPPeer::setNextSplitSequenceNumber(u8 channel, u16 seqnum)
{
	assert(channel < CHANNEL_COUNT); // Pre-condition
	channels[channel].setNextSplitSeqNum(seqnum);
}

SharedBuffer<u8> UDPPeer::addSplitPacket(u8 channel, BufferedPacketPtr &toadd,
	bool reliable)
{
	assert(channel < CHANNEL_COUNT); // Pre-condition
	return channels[channel].incoming_splits.insert(toadd, reliable);
}

/*
	ConnectionEvent
*/

const char *ConnectionEvent::describe() const
{
	switch(type) {
	case CONNEVENT_NONE:
		return "CONNEVENT_NONE";
	case CONNEVENT_DATA_RECEIVED:
		return "CONNEVENT_DATA_RECEIVED";
	case CONNEVENT_PEER_ADDED:
		return "CONNEVENT_PEER_ADDED";
	case CONNEVENT_PEER_REMOVED:
		return "CONNEVENT_PEER_REMOVED";
	case CONNEVENT_BIND_FAILED:
		return "CONNEVENT_BIND_FAILED";
	}
	return "Invalid ConnectionEvent";
}


ConnectionEventPtr ConnectionEvent::create(ConnectionEventType type)
{
	return std::shared_ptr<ConnectionEvent>(new ConnectionEvent(type));
}

ConnectionEventPtr ConnectionEvent::dataReceived(session_t peer_id, const Buffer<u8> &data)
{
	auto e = create(CONNEVENT_DATA_RECEIVED);
	e->peer_id = peer_id;
	data.copyTo(e->data);
	return e;
}

ConnectionEventPtr ConnectionEvent::peerAdded(session_t peer_id, Address address)
{
	auto e = create(CONNEVENT_PEER_ADDED);
	e->peer_id = peer_id;
	e->address = address;
	return e;
}

ConnectionEventPtr ConnectionEvent::peerRemoved(session_t peer_id, bool is_timeout, Address address)
{
	auto e = create(CONNEVENT_PEER_REMOVED);
	e->peer_id = peer_id;
	e->timeout = is_timeout;
	e->address = address;
	return e;
}

ConnectionEventPtr ConnectionEvent::bindFailed()
{
	return create(CONNEVENT_BIND_FAILED);
}

/*
	Connection
*/

Connection::Connection(u32 protocol_id, u32 max_packet_size, float timeout,
		bool ipv6, PeerHandler *peerhandler) :
	m_udpSocket(ipv6),
	m_protocol_id(protocol_id),
	m_sendThread(new ConnectionSendThread(max_packet_size, timeout)),
	m_receiveThread(new ConnectionReceiveThread(max_packet_size)),
	m_bc_peerhandler(peerhandler)

{
	/* Amount of time Receive() will wait for data, this is entirely different
	 * from the connection timeout */
	m_udpSocket.setTimeoutMs(500);

	m_sendThread->setParent(this);
	m_receiveThread->setParent(this);

	m_sendThread->start();
	m_receiveThread->start();
}


Connection::~Connection()
{
	m_shutting_down = true;
	// request threads to stop
	m_sendThread->stop();
	m_receiveThread->stop();

	//TODO for some unkonwn reason send/receive threads do not exit as they're
	// supposed to be but wait on peer timeout. To speed up shutdown we reduce
	// timeout to half a second.
	m_sendThread->setPeerTimeout(0.5);

	// wait for threads to finish
	m_sendThread->wait();
	m_receiveThread->wait();

	// Delete peers
	for (auto &peer : m_peers) {
		delete peer.second;
	}
}

/* Internal stuff */

void Connection::putEvent(ConnectionEventPtr e)
{
	assert(e->type != CONNEVENT_NONE); // Pre-condition
	m_event_queue.push_back(e);
}

void Connection::TriggerSend()
{
	m_sendThread->Trigger();
}

PeerHelper Connection::getPeerNoEx(session_t peer_id)
{
	MutexAutoLock peerlock(m_peers_mutex);
	std::map<session_t, Peer *>::iterator node = m_peers.find(peer_id);

	if (node == m_peers.end()) {
		return PeerHelper(NULL);
	}

	// Error checking
	FATAL_ERROR_IF(node->second->id != peer_id, "Invalid peer id");

	return PeerHelper(node->second);
}

/* find peer_id for address */
u16 Connection::lookupPeer(Address& sender)
{
	MutexAutoLock peerlock(m_peers_mutex);
	std::map<u16, Peer*>::iterator j;
	j = m_peers.begin();
	for(; j != m_peers.end(); ++j)
	{
		Peer *peer = j->second;
		if (peer->isPendingDeletion())
			continue;

		Address tocheck;

		if ((peer->getAddress(MTP_MINETEST_RELIABLE_UDP, tocheck)) && (tocheck == sender))
			return peer->id;

		if ((peer->getAddress(MTP_UDP, tocheck)) && (tocheck == sender))
			return peer->id;
	}

	return PEER_ID_INEXISTENT;
}

bool Connection::deletePeer(session_t peer_id, bool timeout)
{
	Peer *peer = 0;

	/* lock list as short as possible */
	{
		MutexAutoLock peerlock(m_peers_mutex);
		if (m_peers.find(peer_id) == m_peers.end())
			return false;
		peer = m_peers[peer_id];
		m_peers.erase(peer_id);
		auto it = std::find(m_peer_ids.begin(), m_peer_ids.end(), peer_id);
		m_peer_ids.erase(it);
	}

	Address peer_address;
	//any peer has a primary address this never fails!
	peer->getAddress(MTP_PRIMARY, peer_address);

	// Create event
	putEvent(ConnectionEvent::peerRemoved(peer_id, timeout, peer_address));

	peer->Drop();
	return true;
}

/* Interface */

ConnectionEventPtr Connection::waitEvent(u32 timeout_ms)
{
	try {
		return m_event_queue.pop_front(timeout_ms);
	} catch(ItemNotFoundException &ex) {
		return ConnectionEvent::create(CONNEVENT_NONE);
	}
}

void Connection::putCommand(ConnectionCommandPtr c)
{
	if (!m_shutting_down) {
		m_command_queue.push_back(c);
		m_sendThread->Trigger();
	}
}

void Connection::Serve(Address bind_addr)
{
	putCommand(ConnectionCommand::serve(bind_addr));
}

void Connection::Connect(Address address)
{
	putCommand(ConnectionCommand::connect(address));
}

bool Connection::Connected()
{
	MutexAutoLock peerlock(m_peers_mutex);

	if (m_peers.size() != 1)
		return false;

	std::map<session_t, Peer *>::iterator node = m_peers.find(PEER_ID_SERVER);
	if (node == m_peers.end())
		return false;

	if (m_peer_id == PEER_ID_INEXISTENT)
		return false;

	return true;
}

void Connection::Disconnect()
{
	putCommand(ConnectionCommand::disconnect());
}

bool Connection::Receive(NetworkPacket *pkt, u32 timeout)
{
	/*
		Note that this function can potentially wait infinitely if non-data
		events keep happening before the timeout expires.
		This is not considered to be a problem (is it?)
	*/
	for(;;) {
		ConnectionEventPtr e_ptr = waitEvent(timeout);
		const ConnectionEvent &e = *e_ptr;

		if (e.type != CONNEVENT_NONE) {
			LOG(dout_con << getDesc() << ": Receive: got event: "
					<< e.describe() << std::endl);
		}

		switch (e.type) {
		case CONNEVENT_NONE:
			return false;
		case CONNEVENT_DATA_RECEIVED:
			// Data size is lesser than command size, ignoring packet
			if (e.data.getSize() < 2) {
				continue;
			}

			pkt->putRawPacket(*e.data, e.data.getSize(), e.peer_id);
			return true;
		case CONNEVENT_PEER_ADDED: {
			UDPPeer tmp(e.peer_id, e.address, this);
			if (m_bc_peerhandler)
				m_bc_peerhandler->peerAdded(&tmp);
			continue;
		}
		case CONNEVENT_PEER_REMOVED: {
			UDPPeer tmp(e.peer_id, e.address, this);
			if (m_bc_peerhandler)
				m_bc_peerhandler->deletingPeer(&tmp, e.timeout);
			continue;
		}
		case CONNEVENT_BIND_FAILED:
			throw ConnectionBindFailed("Failed to bind socket "
					"(port already in use?)");
		}
	}
	return false;
}

void Connection::Receive(NetworkPacket *pkt)
{
	bool any = Receive(pkt, m_bc_receive_timeout);
	if (!any)
		throw NoIncomingDataException("No incoming data");
}

bool Connection::TryReceive(NetworkPacket *pkt)
{
	return Receive(pkt, 0);
}

void Connection::Send(session_t peer_id, u8 channelnum,
		NetworkPacket *pkt, bool reliable)
{
	assert(channelnum < CHANNEL_COUNT); // Pre-condition

	putCommand(ConnectionCommand::send(peer_id, channelnum, pkt, reliable));
}

Address Connection::GetPeerAddress(session_t peer_id)
{
	PeerHelper peer = getPeerNoEx(peer_id);

	if (!peer)
		throw PeerNotFoundException("No address for peer found!");
	Address peer_address;
	peer->getAddress(MTP_PRIMARY, peer_address);
	return peer_address;
}

float Connection::getPeerStat(session_t peer_id, rtt_stat_type type)
{
	PeerHelper peer = getPeerNoEx(peer_id);
	if (!peer) return -1;
	return peer->getStat(type);
}

float Connection::getLocalStat(rate_stat_type type)
{
	PeerHelper peer = getPeerNoEx(PEER_ID_SERVER);

	FATAL_ERROR_IF(!peer, "Connection::getLocalStat we couldn't get our own peer? are you serious???");

	float retval = 0.0;

	for (Channel &channel : dynamic_cast<UDPPeer *>(&peer)->channels) {
		switch(type) {
			case CUR_DL_RATE:
				retval += channel.getCurrentDownloadRateKB();
				break;
			case AVG_DL_RATE:
				retval += channel.getAvgDownloadRateKB();
				break;
			case CUR_INC_RATE:
				retval += channel.getCurrentIncomingRateKB();
				break;
			case AVG_INC_RATE:
				retval += channel.getAvgIncomingRateKB();
				break;
			case AVG_LOSS_RATE:
				retval += channel.getAvgLossRateKB();
				break;
			case CUR_LOSS_RATE:
				retval += channel.getCurrentLossRateKB();
				break;
		default:
			FATAL_ERROR("Connection::getLocalStat Invalid stat type");
		}
	}
	return retval;
}

u16 Connection::createPeer(Address& sender, MTProtocols protocol, int fd)
{
	// Somebody wants to make a new connection

	// Get a unique peer id (2 or higher)
	session_t peer_id_new = m_next_remote_peer_id;
	u16 overflow =  MAX_UDP_PEERS;

	/*
		Find an unused peer id
	*/
	MutexAutoLock lock(m_peers_mutex);
	bool out_of_ids = false;
	for(;;) {
		// Check if exists
		if (m_peers.find(peer_id_new) == m_peers.end())

			break;
		// Check for overflow
		if (peer_id_new == overflow) {
			out_of_ids = true;
			break;
		}
		peer_id_new++;
	}

	if (out_of_ids) {
		errorstream << getDesc() << " ran out of peer ids" << std::endl;
		return PEER_ID_INEXISTENT;
	}

	// Create a peer
	Peer *peer = 0;
	peer = new UDPPeer(peer_id_new, sender, this);

	m_peers[peer->id] = peer;
	m_peer_ids.push_back(peer->id);

	m_next_remote_peer_id = (peer_id_new +1 ) % MAX_UDP_PEERS;

	LOG(dout_con << getDesc()
			<< "createPeer(): giving peer_id=" << peer_id_new << std::endl);

	{
		Buffer<u8> reply(4);
		writeU8(&reply[0], PACKET_TYPE_CONTROL);
		writeU8(&reply[1], CONTROLTYPE_SET_PEER_ID);
		writeU16(&reply[2], peer_id_new);
		putCommand(ConnectionCommand::createPeer(peer_id_new, reply));
	}

	// Create peer addition event
	putEvent(ConnectionEvent::peerAdded(peer_id_new, sender));

	// We're now talking to a valid peer_id
	return peer_id_new;
}

const std::string Connection::getDesc()
{
	MutexAutoLock _(m_info_mutex);
	return std::string("con(")+
			itos(m_udpSocket.GetHandle())+"/"+itos(m_peer_id)+")";
}

void Connection::DisconnectPeer(session_t peer_id)
{
	putCommand(ConnectionCommand::disconnect_peer(peer_id));
}

void Connection::sendAck(session_t peer_id, u8 channelnum, u16 seqnum)
{
	assert(channelnum < CHANNEL_COUNT); // Pre-condition

	LOG(dout_con<<getDesc()
			<<" Queuing ACK command to peer_id: " << peer_id <<
			" channel: " << (channelnum & 0xFF) <<
			" seqnum: " << seqnum << std::endl);

	SharedBuffer<u8> ack(4);
	writeU8(&ack[0], PACKET_TYPE_CONTROL);
	writeU8(&ack[1], CONTROLTYPE_ACK);
	writeU16(&ack[2], seqnum);

	putCommand(ConnectionCommand::ack(peer_id, channelnum, ack));
	m_sendThread->Trigger();
}

UDPPeer* Connection::createServerPeer(Address& address)
{
	if (ConnectedToServer())
	{
		throw ConnectionException("Already connected to a server");
	}

	UDPPeer *peer = new UDPPeer(PEER_ID_SERVER, address, this);

	{
		MutexAutoLock lock(m_peers_mutex);
		m_peers[peer->id] = peer;
		m_peer_ids.push_back(peer->id);
	}

	return peer;
}

} // namespace
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-27 08:30:22 +0000