[5523] | 1 | /* |
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| 2 | orxonox - the future of 3D-vertical-scrollers |
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| 3 | |
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| 4 | Copyright (C) 2004 orx |
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| 5 | |
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| 6 | This program is free software; you can redistribute it and/or modify |
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| 7 | it under the terms of the GNU General Public License as published by |
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| 8 | the Free Software Foundation; either version 2, or (at your option) |
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| 9 | any later version. |
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| 10 | |
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[5547] | 11 | |
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[5523] | 12 | ### File Specific: |
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| 13 | main-programmer: Silvan Nellen |
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[5997] | 14 | co-programmer: Benjamin Wuest |
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[5547] | 15 | */ |
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[5523] | 16 | |
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[6139] | 17 | #define DEBUG_MODULE_NETWORK |
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| 18 | |
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[6695] | 19 | #include "shared_network_data.h" |
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| 20 | #include "network_stream.h" |
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[5547] | 21 | #include "netdefs.h" |
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[7954] | 22 | #include "network_log.h" |
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[8068] | 23 | #include "network_game_manager.h" |
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[5529] | 24 | |
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[6695] | 25 | #include "state.h" |
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[5996] | 26 | |
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[6753] | 27 | #include <cassert> |
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[6695] | 28 | |
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| 29 | #include "synchronizeable.h" |
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| 30 | |
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| 31 | |
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| 32 | |
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[5547] | 33 | /** |
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[5807] | 34 | * default constructor |
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[5547] | 35 | */ |
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[5996] | 36 | Synchronizeable::Synchronizeable() |
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[5997] | 37 | { |
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[6341] | 38 | this->setClassID(CL_SYNCHRONIZEABLE, "Synchronizeable"); |
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[8068] | 39 | this->owner = 0; |
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[6695] | 40 | this->hostID = SharedNetworkData::getInstance()->getHostID(); |
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[6341] | 41 | this->setIsServer(this->hostID == 0); |
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[6695] | 42 | this->uniqueID = NET_UID_UNASSIGNED; |
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[6145] | 43 | this->networkStream = NULL; |
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[6695] | 44 | this->bSynchronize = false; |
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[7954] | 45 | |
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[6695] | 46 | if( State::isOnline()) |
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| 47 | { |
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| 48 | NetworkStream* nd = SharedNetworkData::getInstance()->getDefaultSyncStream(); |
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| 49 | assert(nd != NULL); |
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| 50 | nd->connectSynchronizeable(*this); |
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| 51 | this->setUniqueID(SharedNetworkData::getInstance()->getNewUniqueID()); |
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| 52 | } |
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[7954] | 53 | |
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| 54 | /* make sure loadClassId is first synced var because this is read by networkStream */ |
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| 55 | assert( syncVarList.size() == 0 ); |
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| 56 | mLeafClassId = this->registerVarId( new SynchronizeableInt( (int*)&this->getLeafClassID(), (int*)&this->getLeafClassID(), "leafClassId" ) ); |
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| 57 | |
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| 58 | this->registerVar( new SynchronizeableInt( &this->owner, &this->owner, "owner" ) ); |
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| 59 | this->registerVar( new SynchronizeableString( &this->objectName, &this->objectName, "objectName" ) ); |
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[5997] | 60 | } |
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| 61 | |
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[5523] | 62 | |
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[5996] | 63 | |
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[5547] | 64 | /** |
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[5807] | 65 | * default destructor deletes all unneded stuff |
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[5547] | 66 | */ |
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| 67 | Synchronizeable::~Synchronizeable() |
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[6139] | 68 | { |
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| 69 | if ( this->networkStream ) |
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| 70 | this->networkStream->disconnectSynchronizeable(*this); |
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[8068] | 71 | |
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| 72 | if ( this->isServer() && this->beSynchronized() && this->getUniqueID() > 0 ) |
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| 73 | NetworkGameManager::getInstance()->removeSynchronizeable( this->getUniqueID() ); |
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[6139] | 74 | } |
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[5523] | 75 | |
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[5547] | 76 | /** |
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[7954] | 77 | * Sets the server flag to a given value |
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| 78 | * @param isServer: the boolean value which the server flag is to set to |
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[5547] | 79 | */ |
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[7954] | 80 | void Synchronizeable::setIsServer(bool isServer) |
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[6139] | 81 | { |
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[7954] | 82 | if( isServer ) |
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| 83 | this->state = this->state | STATE_SERVER; |
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| 84 | else |
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| 85 | this->state = this->state & (~STATE_SERVER); |
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[6139] | 86 | } |
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[5523] | 87 | |
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[6695] | 88 | |
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[5547] | 89 | /** |
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[7954] | 90 | * Determines if the server flag is set |
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| 91 | * @return true, if the server flag is true, false else |
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[5547] | 92 | */ |
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[7954] | 93 | bool Synchronizeable::isServer() |
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[6139] | 94 | { |
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[7954] | 95 | return (this->state & STATE_SERVER) >0; |
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[6139] | 96 | } |
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[5547] | 97 | |
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| 98 | |
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| 99 | |
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[7954] | 100 | int Synchronizeable::getStateDiff( int userId, byte* data, int maxLength, int stateId, int fromStateId, int priorityTH ) |
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| 101 | { |
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| 102 | //make sure this user has his history |
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| 103 | if ( sentStates.size() <= userId ) |
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| 104 | sentStates.resize( userId+1 ); |
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[5547] | 105 | |
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[7954] | 106 | //calculate needed memory |
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| 107 | int neededSize = 0; |
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[5997] | 108 | |
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[7954] | 109 | for ( SyncVarList::iterator it = syncVarList.begin(); it != syncVarList.end(); it++ ) |
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| 110 | neededSize += (*it)->getSize(); |
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[5997] | 111 | |
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[7954] | 112 | if ( !( neededSize <= maxLength ) ) |
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| 113 | { |
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| 114 | PRINTF(0)( "%d > %d\n", neededSize, maxLength ); |
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| 115 | assert(false); |
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| 116 | } |
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| 117 | |
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| 118 | //remove older states from history than fromStateId |
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| 119 | StateHistory::iterator it = sentStates[userId].begin(); |
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| 120 | |
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| 121 | while ( it != sentStates[userId].end() && (*it)->stateId < fromStateId ) |
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| 122 | it++; |
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| 123 | |
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| 124 | if ( it != sentStates[userId].begin() ) |
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| 125 | { |
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| 126 | for ( StateHistory::iterator it2 = sentStates[userId].begin(); it2 != it; it2++ ) |
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| 127 | { |
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| 128 | if ( (*it2)->data != NULL ) |
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| 129 | { |
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| 130 | delete [] (*it2)->data; |
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| 131 | (*it2)->data = NULL; |
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| 132 | } |
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| 133 | } |
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| 134 | sentStates[userId].erase( sentStates[userId].begin(), it ); |
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| 135 | } |
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| 136 | |
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| 137 | //find state to create diff from |
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| 138 | StateHistoryEntry * stateFrom = NULL; |
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| 139 | |
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| 140 | it = sentStates[userId].begin(); |
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| 141 | while ( it != sentStates[userId].end() && (*it)->stateId != fromStateId ) |
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| 142 | it++; |
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| 143 | |
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| 144 | // if ( getLeafClassID() == CL_SPACE_SHIP ) |
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| 145 | // { |
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| 146 | // PRINTF(0)("getStateDiff:SpaceShip from: %d stateId: %d\n", (it == sentStates[userId].end())?-1:fromStateId, stateId); |
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| 147 | // } |
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| 148 | |
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| 149 | if ( it == sentStates[userId].end() ) |
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| 150 | { |
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| 151 | StateHistoryEntry * initialEntry = new StateHistoryEntry(); |
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| 152 | |
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| 153 | initialEntry->stateId = fromStateId; |
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| 154 | initialEntry->dataLength = 0; |
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| 155 | initialEntry->data = NULL; |
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| 156 | |
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| 157 | stateFrom = initialEntry; |
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| 158 | } |
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| 159 | else |
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| 160 | stateFrom = (*it); |
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| 161 | |
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| 162 | StateHistoryEntry * stateTo = new StateHistoryEntry(); |
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| 163 | |
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| 164 | stateTo->stateId = stateId; |
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| 165 | stateTo->dataLength = neededSize; |
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| 166 | stateTo->data = new byte[ neededSize ]; |
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| 167 | |
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| 168 | std::list<int>::iterator sizeIter = stateFrom->sizeList.begin(); |
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| 169 | |
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| 170 | int i = 0; |
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| 171 | int n; |
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| 172 | |
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| 173 | bool hasPermission; |
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| 174 | |
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| 175 | // now do the actual synchronization: kick all variables to write into a common buffer |
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| 176 | for ( SyncVarList::iterator it = syncVarList.begin(); it != syncVarList.end(); it++ ) |
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| 177 | { |
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| 178 | hasPermission = ( |
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| 179 | this->isServer() && (*it)->checkPermission( PERMISSION_SERVER ) || |
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| 180 | this->owner == this->hostID && (*it)->checkPermission( PERMISSION_OWNER ) || |
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[8068] | 181 | this->isServer() && this->owner != userId && (*it)->checkPermission( PERMISSION_OWNER ) || |
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[7954] | 182 | (*it)->checkPermission( PERMISSION_ALL ) |
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| 183 | ); |
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| 184 | |
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| 185 | if ( ( hasPermission && (*it)->getPriority() >= priorityTH ) || sizeIter == stateFrom->sizeList.end() ) |
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| 186 | { |
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| 187 | n = (*it)->writeToBuf( stateTo->data+i, stateTo->dataLength - i ); |
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| 188 | //NETPRINTF(0)("getvar %s %d\n", (*it)->getName().c_str(), n); |
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| 189 | stateTo->sizeList.push_back( n ); |
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| 190 | //(*it)->debug(); |
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| 191 | i += n; |
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| 192 | } |
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| 193 | else |
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| 194 | { |
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| 195 | for ( int j = 0; j<(*sizeIter); j++ ) |
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| 196 | { |
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| 197 | assert( i < stateFrom->dataLength ); |
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| 198 | stateTo->data[i] = stateFrom->data[i]; |
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| 199 | i++; |
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| 200 | } |
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| 201 | //NETPRINTF(0)("getvar %s %d\n", (*it)->getName().c_str(), *sizeIter); |
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| 202 | stateTo->sizeList.push_back( (*sizeIter) ); |
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| 203 | } |
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| 204 | |
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| 205 | if ( sizeIter != stateFrom->sizeList.end() ) |
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| 206 | sizeIter++; |
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| 207 | } |
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| 208 | |
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| 209 | sentStates[userId].push_back( stateTo ); |
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| 210 | |
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| 211 | assert( i == neededSize ); |
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| 212 | |
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| 213 | //write diff to data |
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| 214 | for ( i = 0; i<neededSize; i++ ) |
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| 215 | { |
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| 216 | if ( i < stateFrom->dataLength ) |
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| 217 | data[i] = stateTo->data[i] - stateFrom->data[i]; |
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| 218 | else |
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| 219 | data[i] = stateTo->data[i]; |
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| 220 | } |
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| 221 | |
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| 222 | return neededSize; |
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| 223 | } |
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| 224 | |
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[5997] | 225 | /** |
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[7954] | 226 | * sets a new state out of a diff created on another host |
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| 227 | * @param userId hostId of user who send me that diff |
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| 228 | * @param data pointer to diff |
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| 229 | * @param length length of diff |
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| 230 | * @param stateId id of current state |
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| 231 | * @param fromStateId id of the base state id |
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| 232 | * @return number bytes read |
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| 233 | * @todo check for permissions |
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[5997] | 234 | */ |
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[7954] | 235 | int Synchronizeable::setStateDiff( int userId, byte* data, int length, int stateId, int fromStateId ) |
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[5997] | 236 | { |
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[7954] | 237 | //make sure this user has his history |
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| 238 | if ( recvStates.size() <= userId ) |
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| 239 | recvStates.resize( userId+1 ); |
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| 240 | |
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| 241 | //create new state |
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| 242 | StateHistoryEntry * stateTo = new StateHistoryEntry(); |
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| 243 | stateTo->stateId = stateId; |
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| 244 | stateTo->dataLength = length; |
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| 245 | stateTo->data = new byte[ length ]; |
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| 246 | |
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| 247 | |
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| 248 | //find state to apply diff to |
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| 249 | StateHistoryEntry * stateFrom = NULL; |
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| 250 | |
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| 251 | StateHistory::iterator it = recvStates[userId].begin(); |
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| 252 | while ( it != recvStates[userId].end() && (*it)->stateId != fromStateId ) |
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| 253 | it++; |
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| 254 | |
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| 255 | |
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| 256 | // if ( getLeafClassID() == CL_SPACE_SHIP ) |
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| 257 | // { |
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| 258 | // PRINTF(0)("setStateDiff:SpaceShip from: %d stateId: %d\n", (it == recvStates[userId].end())?-1:fromStateId, stateId); |
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| 259 | // } |
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| 260 | |
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| 261 | if ( it == recvStates[userId].end() ) |
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| 262 | { |
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| 263 | StateHistoryEntry * initialEntry = new StateHistoryEntry(); |
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| 264 | |
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| 265 | initialEntry->stateId = fromStateId; |
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| 266 | initialEntry->dataLength = 0; |
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| 267 | initialEntry->data = NULL; |
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| 268 | |
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| 269 | stateFrom = initialEntry; |
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| 270 | } |
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[5997] | 271 | else |
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[7954] | 272 | stateFrom = (*it); |
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| 273 | |
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| 274 | //apply diff |
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| 275 | for ( int i = 0; i<length; i++ ) |
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| 276 | { |
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| 277 | if ( i < stateFrom->dataLength ) |
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| 278 | stateTo->data[i] = stateFrom->data[i] + data[i]; |
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| 279 | else |
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| 280 | stateTo->data[i] = data[i]; |
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| 281 | |
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| 282 | } |
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| 283 | |
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| 284 | //add state to state history |
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| 285 | recvStates[userId].push_back( stateTo ); |
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| 286 | |
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| 287 | int i = 0; |
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| 288 | int n = 0; |
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| 289 | std::list<int> changes; |
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| 290 | |
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| 291 | for ( SyncVarList::iterator it = syncVarList.begin(); it != syncVarList.end(); it++ ) |
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| 292 | { |
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| 293 | if ( |
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| 294 | (*it)->checkPermission( PERMISSION_SERVER ) && networkStream->isUserServer( userId ) || |
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| 295 | (*it)->checkPermission( PERMISSION_OWNER ) && this->owner == userId || |
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[8068] | 296 | networkStream->isUserServer( userId ) && this->owner != getHostID() && (*it)->checkPermission( PERMISSION_OWNER ) || |
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[7954] | 297 | (*it)->checkPermission( PERMISSION_ALL ) |
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| 298 | ) |
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| 299 | { |
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| 300 | n = (*it)->readFromBuf( stateTo->data + i, stateTo->dataLength - i ); |
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| 301 | i += n; |
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| 302 | //NETPRINTF(0)("%s::setvar %s %d\n", getClassName(), (*it)->getName().c_str(), n); |
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| 303 | //(*it)->debug(); |
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| 304 | if ( (*it)->getHasChanged() ) |
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| 305 | { |
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| 306 | changes.push_back( (*it)->getVarId() ); |
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| 307 | } |
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| 308 | } |
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| 309 | else |
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| 310 | { |
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| 311 | // PRINTF(0)("DONT SET VAR BECAUSE OF PERMISSION: %s %d %d %d %d %d %d\n", (*it)->getName().c_str(), (*it)->checkPermission( PERMISSION_SERVER ), (*it)->checkPermission( PERMISSION_OWNER ), (*it)->checkPermission( PERMISSION_ALL ), networkStream->isUserServer( userId ), this->owner, userId ); |
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| 312 | n = (*it)->getSizeFromBuf( stateTo->data + i, stateTo->dataLength - i ); |
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| 313 | //NETPRINTF(0)("%s::setvar %s %d\n", getClassName(), (*it)->getName().c_str(), n); |
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| 314 | //(*it)->debug(); |
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| 315 | i += n; |
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| 316 | } |
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| 317 | } |
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| 318 | |
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| 319 | this->varChangeHandler( changes ); |
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| 320 | |
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| 321 | return i; |
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[5997] | 322 | } |
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| 323 | |
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[7954] | 324 | /** |
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| 325 | * override this function to be notified on change |
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| 326 | * of your registred variables. |
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| 327 | * @param id id's which have changed |
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| 328 | */ |
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| 329 | void Synchronizeable::varChangeHandler( std::list<int> & id ) |
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| 330 | { |
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| 331 | } |
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[6695] | 332 | |
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[5997] | 333 | /** |
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[7954] | 334 | * registers a varable to be synchronized over network |
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| 335 | * @param var see src/lib/network/synchronizeable_var/ for available classes |
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[5997] | 336 | */ |
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[7954] | 337 | void Synchronizeable::registerVar( SynchronizeableVar * var ) |
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[5997] | 338 | { |
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[8068] | 339 | //PRINTF(0)("ADDING VAR: %s\n", var->getName().c_str()); |
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[7954] | 340 | syncVarList.push_back( var ); |
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[5997] | 341 | } |
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| 342 | |
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| 343 | /** |
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[7954] | 344 | * registers a varable to be synchronized over network |
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| 345 | * return value is passed to varChangeHandler on change |
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| 346 | * @param var see src/lib/network/synchronizeable_var/ for available classes |
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| 347 | * @return handle passed to varChangeHandler on changes |
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[5997] | 348 | */ |
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[7954] | 349 | int Synchronizeable::registerVarId( SynchronizeableVar * var ) |
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[5997] | 350 | { |
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[8068] | 351 | //PRINTF(0)("ADDING VAR: %s\n", var->getName().c_str()); |
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[7954] | 352 | syncVarList.push_back( var ); |
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| 353 | var->setWatched( true ); |
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| 354 | var->setVarId( syncVarList.size()-1 ); |
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| 355 | return syncVarList.size()-1; |
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[5997] | 356 | } |
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| 357 | |
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| 358 | /** |
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[7954] | 359 | * removed user's states from memory |
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| 360 | * @param userId user to clean |
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[5997] | 361 | */ |
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[7954] | 362 | void Synchronizeable::cleanUpUser( int userId ) |
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[5997] | 363 | { |
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[7954] | 364 | for ( UserStateHistory::iterator it = sentStates.begin(); it != sentStates.end(); it++ ) |
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| 365 | { |
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| 366 | for ( StateHistory::iterator it2 = it->begin(); it2 != it->end(); it2++ ) |
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| 367 | { |
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| 368 | if ( (*it2)->data ) |
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| 369 | delete [] (*it2)->data; |
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| 370 | (*it2)->data = NULL; |
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| 371 | |
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| 372 | delete *it2; |
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| 373 | } |
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| 374 | } |
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| 375 | |
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| 376 | sentStates.clear(); |
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| 377 | |
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| 378 | for ( UserStateHistory::iterator it = recvStates.begin(); it != recvStates.end(); it++ ) |
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| 379 | { |
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| 380 | for ( StateHistory::iterator it2 = it->begin(); it2 != it->end(); it2++ ) |
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| 381 | { |
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| 382 | if ( (*it2)->data ) |
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| 383 | delete [] (*it2)->data; |
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| 384 | (*it2)->data = NULL; |
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| 385 | |
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| 386 | delete *it2; |
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| 387 | } |
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| 388 | } |
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| 389 | |
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| 390 | recvStates.clear(); |
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[5997] | 391 | } |
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[6139] | 392 | |
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[6341] | 393 | /** |
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[7954] | 394 | * this function is called after recieving a state. |
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| 395 | * @param userId |
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| 396 | * @param stateId |
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| 397 | * @param fromStateId |
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[6341] | 398 | */ |
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[7954] | 399 | void Synchronizeable::handleRecvState( int userId, int stateId, int fromStateId ) |
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[6341] | 400 | { |
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[7954] | 401 | //make sure this user has his history |
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| 402 | if ( recvStates.size() <= userId ) |
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| 403 | recvStates.resize( userId+1 ); |
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| 404 | |
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| 405 | //remove old states |
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| 406 | StateHistory::iterator it = recvStates[userId].begin(); |
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| 407 | |
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| 408 | #if 0 |
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| 409 | while ( it != recvStates[userId].end() && (*it)->stateId < fromStateId ) |
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| 410 | it++; |
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| 411 | |
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| 412 | if ( it != recvStates[userId].begin() ) |
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| 413 | { |
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| 414 | for ( StateHistory::iterator it2 = recvStates[userId].begin(); it2 != it; it2++ ) |
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| 415 | { |
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| 416 | if ( (*it2)->data != NULL ) |
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| 417 | { |
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| 418 | delete [] (*it2)->data; |
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| 419 | (*it2)->data = NULL; |
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| 420 | } |
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| 421 | } |
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| 422 | recvStates[userId].erase( recvStates[userId].begin(), it ); |
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| 423 | } |
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| 424 | #endif |
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| 425 | |
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| 426 | for ( it = recvStates[userId].begin(); it != recvStates[userId].end(); ) |
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| 427 | { |
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| 428 | if ( (*it)->stateId < fromStateId ) |
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| 429 | { |
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| 430 | StateHistory::iterator delIt = it; |
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| 431 | it ++; |
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| 432 | |
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| 433 | if ( (*delIt)->data ) |
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| 434 | delete [] (*delIt)->data; |
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| 435 | recvStates[userId].erase( delIt ); |
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| 436 | |
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| 437 | continue; |
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| 438 | } |
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| 439 | it++; |
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| 440 | } |
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| 441 | |
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| 442 | StateHistory::iterator fromState = recvStates[userId].end(); |
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| 443 | StateHistory::iterator toState = recvStates[userId].end(); |
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| 444 | |
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| 445 | for ( it = recvStates[userId].begin(); it != recvStates[userId].end(); it++ ) |
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| 446 | { |
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| 447 | if ( (*it)->stateId == stateId ) |
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| 448 | toState = it; |
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| 449 | if ( (*it)->stateId == fromStateId ) |
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| 450 | fromState = it; |
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| 451 | |
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| 452 | if ( fromState != recvStates[userId].end() && toState != recvStates[userId].end() ) |
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| 453 | break; |
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| 454 | } |
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| 455 | |
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| 456 | // setStateDiff was not called and i know fromStateId |
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| 457 | if ( fromState != recvStates[userId].end() && toState == recvStates[userId].end() ) |
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| 458 | { |
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| 459 | StateHistoryEntry * entry = new StateHistoryEntry; |
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| 460 | |
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| 461 | entry->dataLength = (*fromState)->dataLength; |
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| 462 | if ( entry->dataLength > 0 ) |
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| 463 | { |
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| 464 | entry->data = new byte[entry->dataLength]; |
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| 465 | |
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| 466 | assert( (*fromState)->data ); |
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| 467 | memcpy( entry->data, (*fromState)->data, entry->dataLength ); |
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| 468 | } |
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| 469 | else |
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| 470 | entry->data = NULL; |
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| 471 | |
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| 472 | entry->sizeList = (*fromState)->sizeList; |
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| 473 | entry->stateId = stateId; |
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| 474 | |
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| 475 | recvStates[userId].push_back(entry); |
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| 476 | } |
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[6341] | 477 | } |
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[6139] | 478 | |
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[6341] | 479 | /** |
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[7954] | 480 | * this function is called after sending a state |
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| 481 | * @param userId |
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| 482 | * @param stateId |
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| 483 | * @param fromStateId |
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[6341] | 484 | */ |
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[7954] | 485 | void Synchronizeable::handleSentState( int userId, int stateId, int fromStateId ) |
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[6341] | 486 | { |
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[7954] | 487 | //make sure this user has his history |
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| 488 | if ( sentStates.size() <= userId ) |
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| 489 | sentStates.resize( userId+1 ); |
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| 490 | |
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| 491 | //remove old states |
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| 492 | StateHistory::iterator it = sentStates[userId].begin(); |
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| 493 | |
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| 494 | for ( it = sentStates[userId].begin(); it != sentStates[userId].end(); ) |
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| 495 | { |
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| 496 | if ( (*it)->stateId < fromStateId ) |
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| 497 | { |
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| 498 | StateHistory::iterator delIt = it; |
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| 499 | it ++; |
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| 500 | |
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| 501 | if ( (*delIt)->data ) |
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| 502 | delete [] (*delIt)->data; |
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| 503 | sentStates[userId].erase( delIt ); |
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| 504 | |
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| 505 | continue; |
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| 506 | } |
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| 507 | it++; |
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| 508 | } |
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| 509 | |
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| 510 | |
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| 511 | StateHistory::iterator fromState = sentStates[userId].end(); |
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| 512 | StateHistory::iterator toState = sentStates[userId].end(); |
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| 513 | |
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| 514 | for ( it = sentStates[userId].begin(); it != sentStates[userId].end(); it++ ) |
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| 515 | { |
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| 516 | if ( (*it)->stateId == stateId ) |
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| 517 | toState = it; |
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| 518 | if ( (*it)->stateId == fromStateId ) |
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| 519 | fromState = it; |
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| 520 | |
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| 521 | if ( fromState != sentStates[userId].end() && toState != sentStates[userId].end() ) |
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| 522 | break; |
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| 523 | } |
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| 524 | |
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| 525 | |
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| 526 | // getStateDiff was not called and i know fromStateId |
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| 527 | if ( fromState != sentStates[userId].end() && toState == sentStates[userId].end() ) |
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| 528 | { |
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| 529 | StateHistoryEntry * entry = new StateHistoryEntry; |
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| 530 | |
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| 531 | entry->dataLength = (*fromState)->dataLength; |
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| 532 | if ( entry->dataLength > 0 ) |
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| 533 | { |
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| 534 | entry->data = new byte[entry->dataLength]; |
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| 535 | |
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| 536 | assert( (*fromState)->data ); |
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| 537 | memcpy( entry->data, (*fromState)->data, entry->dataLength ); |
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| 538 | } |
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| 539 | else |
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| 540 | entry->data = NULL; |
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| 541 | |
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| 542 | entry->sizeList = (*fromState)->sizeList; |
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| 543 | entry->stateId = stateId; |
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| 544 | |
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| 545 | sentStates[userId].push_back(entry); |
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| 546 | } |
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| 547 | |
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[6341] | 548 | } |
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[6139] | 549 | |
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[6341] | 550 | |
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| 551 | |
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