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This project forked from acatadog/kbengine

这是 KBEngine 的 kst 分支，用于开发大型 MMORPG 游戏。根据实际的项目开发需要对 KBEngine 的特性进行扩展，例如飞行平台功能。并依托项目对 KBEngine 进行有针对性的深度压力测试，通过压测，得到KBEngine服务器的性能极限数据，得到了与运营有关的服务器优化配置参数，发现并修正了多项在正常情况下难以发现或重现的幽灵bug。

Home Page: http://www.kbengine.org

License: GNU Lesser General Public License v3.0

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leovany bydreamxxx niangu xiaofengzhiyu zcz260806542 yangqingming

kbengine's Issues

dbmgr automatically exits itself after some time with "mongodb" enabled

[ INFO] [0x00001718] [2019-08-28 11:35:39,902] Components::removeComponentByChannel: dbmgr : 4002, Normal exit!
WARNING baseappmgr-1 13061 5002 [2019-08-28 11:35:39 901] - TCPPacketReceiver::processPendingEvents(192.168.1.7:1845): Throwing REASON_GENERAL_NETWORK - WSAECONNRESET
ERROR baseappmgr-1 13061 5002 [2019-08-28 11:35:39 903] - Components::removeComponentByChannel: dbmgr : 4002, Abnormal exit! TCPPacketReceiver::processRecv(): errno=10054

moveToPoint的使用导致服务器崩溃(KBEN-142)

master版本：SHA-1: f1d08f9
使用release模式发布，调用moveToPoint参数传入错误导致服务器崩溃

重现方式：
windows下使用模式release发布的kbe cellapp，在moveToPoint的在moveVertically（贴地）参数传入一个python列表，时会崩溃

使用debug发布的cellapp则报出如下错误：
TypeError: KBEngine::Entity::__py_pyMoveToPoint: args(float, float, PyObject_ptr, int32, int32, ��() is error!

创建space时，未指定cellappIndex时有可能创建在不参与负载均衡的cellapp中(KBEN-141)

@kebiao

问题描述：
2个cellapp，一开始设置不参与动态负载平衡->不指定cellapp请求创建space（没有可用cellapp于是缓存请求消息）->再修改第2个的标记为参与->会把space创建到第一个还没解除不参与标记的cellapp。

问题原因：
缓存space创建消息后，一旦有cellapp准备好，就立刻创建space到第一个找到的cellapp，不管是否它是否参与动态负载平衡。
baseapp应该也存在类似问题。

bug代码在：
bool ForwardAnywhere_MessageBuffer::process()，选择cellapp相关代码。

智能指针导致的服务器组件崩溃问题

Program terminated with signal 11, Segmentation fault.
#0 0x00000000007c2438 in KBEngine::Navigation::findNavigation (this=0x11010c0, resPath=...) at navigation.cpp:79
79	navigation.cpp: No such file or directory.
in navigation.cpp
Missing separate debuginfos, use: debuginfo-install glibc-2.12-1.212.el6.x86_64 libgcc-4.4.7-23.el6.x86_64 libstdc++-4.4.7-23.el6.x86_64
(gdb) bt
#0 0x00000000007c2438 in KBEngine::Navigation::findNavigation (this=0x11010c0, resPath="space\\L_BJG_NAVMESH") at navigation.cpp:79
#1 0x00000000006b0125 in KBEngine::LoadNavmeshTask::presentMainThread (this=0x7ff64551c8c0) at loadnavmesh_threadtasks.cpp:40
#2 0x00000000007e0d48 in KBEngine::thread::ThreadPool::onMainThreadTick (this=0x7ffc7c0dd898) at threadpool.cpp:375
#3 0x0000000000656f71 in handleGameTick (this=0x7ffc7c0dd7d0) at /home/kenner/kbe/kbengine/kbe/src/lib/server/entity_app.h:760
#4 KBEngine::Cellapp::handleGameTick (this=0x7ffc7c0dd7d0) at cellapp.cpp:270
#5 0x0000000000653d12 in handleTimeout (this=0x7ffc7c0dd7d0, handle=<value optimized out>, arg=<value optimized out>) at /home/kenner/kbe/kbengine/kbe/src/lib/server/entity_app.h:744
#6 KBEngine::Cellapp::handleTimeout (this=0x7ffc7c0dd7d0, handle=<value optimized out>, arg=<value optimized out>) at cellapp.cpp:259
#7 0x000000000079a139 in triggerTimer (this=0x7ff6639e4fd0, now=5851500305038706) at /home/kenner/kbe/kbengine/kbe/src/lib/common/timer.inl:267
#8 KBEngine::TimersT<unsigned long>::process (this=0x7ff6639e4fd0, now=5851500305038706) at /home/kenner/kbe/kbengine/kbe/src/lib/common/timer.inl:139
#9 0x0000000000799662 in KBEngine::Network::EventDispatcher::processTimers (this=0x7ffc7c0de150) at event_dispatcher.cpp:172
#10 0x0000000000799833 in KBEngine::Network::EventDispatcher::processOnce (this=0x7ffc7c0de150, shouldIdle=true) at event_dispatcher.cpp:215
#11 0x000000000079989d in KBEngine::Network::EventDispatcher::processUntilBreak (this=0x7ffc7c0de150) at event_dispatcher.cpp:202
#12 0x0000000000749fed in KBEngine::ServerApp::run (this=<value optimized out>) at serverapp.cpp:277
#13 0x00000000006d907f in KBEngine::kbeMainT<KBEngine::Cellapp> (argc=<value optimized out>, argv=<value optimized out>, componentType=KBEngine::CELLAPP_TYPE, extlisteningPort_min=17174880, extlisteningPort_max=12649664, 
    extlisteningInterface=0x7ffc7c0de310 "XZ5W\366\177", intlisteningPort=0, intlisteningInterface=0x10fc136 "") at /home/kenner/kbe/kbengine/kbe/src/lib/server/kbemain.h:193
#14 0x00000000006c394f in kbeMain (argc=<value optimized out>, argv=<value optimized out>) at main.cpp:79
#15 0x00000000006c3ae1 in main (argc=3, argv=0x7ffc7c0de548) at main.cpp:76

重现方法：
cs3项目，aiPer中TeleportSpaceAI设置为100，将teleport_maps中bigmap_1和L_JYHD对应的最后一项设置为True，其他都设置为False，起机器人进行测试，一段时间即可重现问题。

启动过多的cellapp进程后，有些cellapp会在启动时崩溃

Missing separate debuginfos, use: debuginfo-install glibc-2.12-1.192.el6.x86_64 libgcc-4.4.7-17.el6.x86_64 libstdc++-4.4.7-17.el6.x86_64 
(gdb) bt 
#0 0x0000003a2dc325e5 in raise () from /lib64/libc.so.6 
#1 0x0000003a2dc33dc5 in abort () from /lib64/libc.so.6 
#2 0x00000000007ff587 in KBEngine::myassert (exp=0xbf49b8 "ret != -1", func=0xbf8e20 "onGetEntityAppFromDbmgr", file=0xbf4928 "cellapp.cpp", line=407) at debug_helper.cpp:145 
#3 0x0000000000659857 in KBEngine::Cellapp::onGetEntityAppFromDbmgr (this=0x7fff3abd7780, pChannel=0x7f885697cb00, uid=2000, username="kbe", componentType=KBEngine::CELLAPP_TYPE, componentID=<value optimized out>, globalorderID=41, 
    grouporderID=26, intaddr=4043706540, intport=30825, extaddr=0, extport=0, extaddrEx="") at cellapp.cpp:407 
#4 0x0000000000675bcb in KBEngine::CellappInterface::onGetEntityAppFromDbmgrCellappMessagehandler11::handle (this=<value optimized out>, pChannel=0x7f885697cb00, s=...) at cellapp_interface.h:75 
#5 0x00000000007a5ecf in KBEngine::Network::PacketReader::processMessages (this=0x7f8868c89140, pMsgHandlers=0x1101300, pPacket=0x7f8856d967e0) at packet_reader.cpp:207 
#6 0x0000000000796d31 in KBEngine::Network::Channel::processPackets (this=0x7f885697cb00, pMsgHandlers=0x1101300, pPacket=0x7f8856d967e0) at channel.cpp:811 
#7 0x00000000007975b6 in KBEngine::Network::Channel::addReceiveWindow (this=0x7f885697cb00, pPacket=0x7f8856d967e0) at channel.cpp:713 
#8 0x00000000007ae634 in KBEngine::Network::TCPPacketReceiver::processFilteredPacket (this=<value optimized out>, pChannel=<value optimized out>, pPacket=<value optimized out>) at tcp_packet_receiver.cpp:145 
#9 0x00000000007b011f in KBEngine::Network::TCPPacketReceiver::processRecv (this=0x7f8856727200, expectingPacket=true) at tcp_packet_receiver.cpp:122 
#10 0x00000000007c17af in KBEngine::Network::PacketReceiver::handleInputNotification (this=0x7f8856727200, fd=<value optimized out>) at packet_receiver.cpp:63 
#11 0x000000000079a3aa in KBEngine::Network::EventPoller::triggerRead (this=<value optimized out>, fd=<value optimized out>) at event_poller.cpp:102 
#12 0x00000000007a7d7c in KBEngine::Network::EpollPoller::processPendingEvents (this=0x7f887310e800, maxWait=<value optimized out>) at poller_epoll.cpp:141 
#13 0x000000000079989d in KBEngine::Network::EventDispatcher::processUntilBreak (this=0x7fff3abd8100) at event_dispatcher.cpp:202 
#14 0x0000000000749fed in KBEngine::ServerApp::run (this=<value optimized out>) at serverapp.cpp:277 
#15 0x00000000006d907f in KBEngine::kbeMainT<KBEngine::Cellapp> (argc=<value optimized out>, argv=<value optimized out>, componentType=KBEngine::CELLAPP_TYPE, extlisteningPort_min=17174880, extlisteningPort_max=12649664, 
    extlisteningInterface=0x7fff3abd82c0 "\230\316=V\210\177", intlisteningPort=0, intlisteningInterface=0x10fc136 "") at /home/kenner/kbe/kbengine/kbe/src/lib/server/kbemain.h:193 
#16 0x00000000006c394f in kbeMain (argc=<value optimized out>, argv=<value optimized out>) at main.cpp:79 
#17 0x00000000006c3ae1 in main (argc=3, argv=0x7fff3abd84f8) at main.cpp:76

跨服副本的支持

通过center组件，是否能达到跨服打副本的效果？
不同服的玩家可以传送到一个副本，组队完成副本。 @imgamer

机器人压测导致baseapp崩溃2019-4-10(KBEN-152)

Program terminated with signal 6, Aborted. 
#0 0x00007fb89e6794f5 in raise () from /lib64/libc.so.6 
Missing separate debuginfos, use: debuginfo-install glibc-2.12-1.212.el6.x86_64 libgcc-4.4.7-23.el6.x86_64 libstdc++-4.4.7-23.el6.x86_64 zlib-1.2.3-29.el6.x86_64 
(gdb) bt 
#0 0x00007fb89e6794f5 in raise () from /lib64/libc.so.6 
#1 0x00007fb89e67acd5 in abort () from /lib64/libc.so.6 
#2 0x00000000007b82f7 in KBEngine::myassert (exp=0xbaf200 "!pBufferedSendToClientMessages_", func=0xbafe00 "onMigrationCellappEnd", file=0xbae7d1 "entity.cpp", line=1587) at debug_helper.cpp:145 
#3 0x00000000006417db in KBEngine::Entity::onMigrationCellappEnd (this=0x7fb88b42fcf8, pChannel=<value optimized out>, sourceCellAppID=13000000000002, targetCellAppID=1000000000002) at entity.cpp:1587 
#4 0x00000000006813fd in KBEngine::BaseappInterface::onMigrationCellappEndEntityMessagehandler2::handle (this=<value optimized out>, pChannel=0x7fb89e29bc00, s=...) at baseapp_interface.h:357 
#5 0x000000000077a4cf in KBEngine::Network::PacketReader::processMessages (this=0x7fb892f20000, pMsgHandlers=0x10a4e80, pPacket=0x7fb89471be90) at packet_reader.cpp:207 
#6 0x0000000000766c21 in KBEngine::Network::Channel::processPackets (this=0x7fb89e29bc00, pMsgHandlers=0x10a4e80, pPacket=0x7fb89471be90) at channel.cpp:811 
#7 0x00000000007674a6 in KBEngine::Network::Channel::addReceiveWindow (this=0x7fb89e29bc00, pPacket=0x7fb89471be90) at channel.cpp:713 
#8 0x0000000000782c34 in KBEngine::Network::TCPPacketReceiver::processFilteredPacket (this=<value optimized out>, pChannel=<value optimized out>, pPacket=<value optimized out>) at tcp_packet_receiver.cpp:145 
#9 0x000000000078471f in KBEngine::Network::TCPPacketReceiver::processRecv (this=0x7fb8938f7f40, expectingPacket=true) at tcp_packet_receiver.cpp:122 
#10 0x0000000000796aff in KBEngine::Network::PacketReceiver::handleInputNotification (this=0x7fb8938f7f40, fd=<value optimized out>) at packet_receiver.cpp:63 
#11 0x000000000076a29a in KBEngine::Network::EventPoller::triggerRead (this=<value optimized out>, fd=<value optimized out>) at event_poller.cpp:102 
#12 0x000000000077c37c in KBEngine::Network::EpollPoller::processPendingEvents (this=0x7fb89e284800, maxWait=<value optimized out>) at poller_epoll.cpp:141 
#13 0x000000000076978d in KBEngine::Network::EventDispatcher::processUntilBreak (this=0x7ffc1edd1ca0) at event_dispatcher.cpp:202 
#14 0x00000000006e79fd in KBEngine::ServerApp::run (this=<value optimized out>) at serverapp.cpp:277 
#15 0x00000000006c417f in KBEngine::kbeMainT<KBEngine::Baseapp> (argc=<value optimized out>, argv=<value optimized out>, componentType=KBEngine::BASEAPP_TYPE, extlisteningPort_min=16801856, extlisteningPort_max=12354528, 
    extlisteningInterface=0x7ffc1edd1e60 "?207^\223?\177", intlisteningPort=0, intlisteningInterface=0x10a02de "") at /home/kenner/kbe/kbengine/kbe/src/lib/server/kbemain.h:193 
#16 0x00000000006b08e4 in kbeMain (argc=<value optimized out>, argv=<value optimized out>) at main.cpp:81 
#17 0x00000000006b0a71 in main (argc=3, argv=0x7ffc1edd2098) at main.cpp:77 
(gdb)

bot entity创建时的dbid递增bug

见中红框选中部分，一般而言，entity的的dbid是由低到高递增，然而数据库中显示bot entity的dbid是一个比较大的值，查看代码以确定是否正常。

广播的entity属性数据过大时导致 bundle 包长度计算错误

明确问题：

机器人刷demo战boss副本，战斗一段时间后，cellapp崩溃。

玩家有一个attrBuffs的属性是ALL_CLIENTS，每次发生变化的时候都会广播给周边的玩家，这个属性在玩家战斗的过程中变得越来越庞大（在测试中，有发现达到1000个以上的buff数据），这么庞大的数据在广播的过程中，引起socket异常，从而导致进程通信中断。

在出现问题之前，log日志中可以看到
WARN root [0x00001360] [2018-11-16 09:29:31,041] - EventHistoryStats::trackEvent[Role.attrBuffs]: message size(13697) >= PACKET_MAX_SIZE_TCP(1460).之类的警告信息。

定位问题：

通过错误信息可以看到是某个 msgid 找不到对应协议导致的问题。
开启配置中的 <trace_packet>/<debug_type> 1
可以在日志中看到 bundle 信息（id，length）的输出，可以看到异常的 msgid ，这是一个不可能的值，猜测是协议解析出错，msgid 的解析越界了，msgid 和 length 等数据写入和读取不匹配了。

解决问题：

阅读相关代码，找到bug并修正。引擎代码存在bug，广播( cell_public )的entity属性数据过大时（messageLength >= NETWORK_MESSAGE_MAX_SIZE）导致 bundle 包长度计算错误。

fixed at: d2153b5