[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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| 11 | ### File Specific: |
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[7767] | 12 | main-programmer: Christoph Renner |
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[5523] | 13 | co-programmer: ... |
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[5550] | 14 | */ |
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[5523] | 15 | |
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[5547] | 16 | #include "connection_monitor.h" |
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[7767] | 17 | #include "network_log.h" |
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| 18 | |
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[5618] | 19 | #include <debug.h> |
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| 20 | #include <SDL/SDL.h> |
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| 21 | #include <string.h> |
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[5526] | 22 | |
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[5564] | 23 | /* using namespace std is default, this needs to be here */ |
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| 24 | using namespace std; |
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| 25 | |
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[7767] | 26 | ConnectionMonitor::ConnectionMonitor( int userId ) |
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[5618] | 27 | { |
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| 28 | /* set the class id for the base object and add ist to class list*/ |
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| 29 | this->setClassID(CL_CONNECTION_MONITOR, "ConnectionMonitor"); |
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[7767] | 30 | |
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| 31 | this->userId = userId; |
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| 32 | this->ping = 0; |
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| 33 | this->incomingUnzippedBandWidth = 0; |
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| 34 | this->outgoingUnzippedBandWidth = 0; |
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| 35 | this->nIncomingPackets = 0; |
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| 36 | this->nOutgoingPackets = 0; |
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| 37 | |
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| 38 | this->lastPacketTick = 0; |
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[5618] | 39 | } |
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| 40 | |
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[7767] | 41 | ConnectionMonitor::~ConnectionMonitor( ) |
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[5618] | 42 | { |
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| 43 | } |
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[5523] | 44 | |
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[7767] | 45 | void ConnectionMonitor::processUnzippedOutgoingPacket( byte * data, int length, int stateId ) |
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[5618] | 46 | { |
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[7767] | 47 | int tick = SDL_GetTicks(); |
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| 48 | |
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| 49 | nOutgoingPackets++; |
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| 50 | |
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| 51 | // for ping calculation |
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| 52 | sentStateTicks[stateId] = tick; |
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| 53 | |
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| 54 | // calculate bandwidth |
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| 55 | outgoingUnzippedPacketHistory[tick] = length; |
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| 56 | outgoingUnzippedBandWidth = calculateBandWidth( outgoingUnzippedPacketHistory, tick ); |
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| 57 | |
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| 58 | NETPRINTF(n)("UPSTREAM: user: %d bandwidth %f\n", userId, outgoingUnzippedBandWidth ); |
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| 59 | |
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| 60 | // count zero bytes |
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| 61 | int nZeroBytes = 0; |
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| 62 | |
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| 63 | for ( int i = 0; i < length; i++ ) |
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| 64 | if ( data[i] == '\0' ) |
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| 65 | nZeroBytes++; |
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| 66 | |
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| 67 | NETPRINTF(n)( "ZEROBYTES: %d (%f%%)\n", nZeroBytes, ((float)100)*nZeroBytes/length ); |
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[5618] | 68 | } |
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[5581] | 69 | |
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[7767] | 70 | void ConnectionMonitor::processUnzippedIncomingPacket( byte * data, int length, int stateId, int ackedState ) |
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[5618] | 71 | { |
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[7767] | 72 | int tick = SDL_GetTicks(); |
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| 73 | |
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| 74 | nIncomingPackets++; |
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| 75 | |
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| 76 | lastPacketTick = tick; |
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| 77 | |
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| 78 | // calculate ping |
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| 79 | if ( sentStateTicks.find( ackedState ) != sentStateTicks.end() ) |
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| 80 | { |
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| 81 | ackDelay.push_back( tick - sentStateTicks[ackedState] ); |
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| 82 | } |
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| 83 | |
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| 84 | while ( sentStateTicks.begin()->first <= ackedState ) |
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| 85 | sentStateTicks.erase( sentStateTicks.begin() ); |
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| 86 | |
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| 87 | while ( ackDelay.size() > N_PACKETS_FOR_PING ) |
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| 88 | ackDelay.erase( ackDelay.begin() ); |
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| 89 | |
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| 90 | ping = 0; |
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| 91 | |
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| 92 | for ( std::list<int>::iterator it = ackDelay.begin(); it != ackDelay.end(); it++ ) |
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| 93 | ping += *it; |
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| 94 | |
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| 95 | if ( ackDelay.size() == 0 ) |
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| 96 | ping = -1; |
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| 97 | else |
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| 98 | ping /= ackDelay.size(); |
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| 99 | |
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| 100 | NETPRINTF(n)("PING: user: %d ping: %d\n", userId, ping ); |
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| 101 | |
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| 102 | // calculate bandwidth |
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| 103 | incomingUnzippedPacketHistory[tick] = length; |
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| 104 | incomingUnzippedBandWidth = calculateBandWidth( incomingUnzippedPacketHistory, tick ); |
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| 105 | |
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| 106 | NETPRINTF(n)("DOWNSTREAM: user: %d bandwidth %f\n", userId, incomingUnzippedBandWidth ); |
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| 107 | |
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[5618] | 108 | } |
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[5581] | 109 | |
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[7767] | 110 | float ConnectionMonitor::calculateBandWidth( std::map< int, int > packetHistory, int tick ) |
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[5720] | 111 | { |
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[7767] | 112 | // delete old packets |
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| 113 | while ( packetHistory.begin()->first < tick - MSECS_TO_CALC_BWIDTH ) |
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| 114 | packetHistory.erase( packetHistory.begin() ); |
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| 115 | |
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| 116 | float res = 0.0f; |
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| 117 | |
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| 118 | for ( std::map<int,int>::iterator it = packetHistory.begin(); it != packetHistory.end(); it++ ) |
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[5726] | 119 | { |
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[7767] | 120 | res += it->second; |
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| 121 | } |
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| 122 | |
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| 123 | if ( packetHistory.size() <= 1 || tick - packetHistory.begin()->first == 0 ) |
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| 124 | res = 0; |
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| 125 | else |
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| 126 | res /= (float)((tick - packetHistory.begin()->first)*( 1 + 1/((float)(packetHistory.size()-1)) )); |
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| 127 | |
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| 128 | res *= 1000; |
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| 129 | |
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| 130 | return res; |
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[5720] | 131 | } |
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| 132 | |
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| 133 | |
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