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Add congestion control settings to minetest.conf
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@ -198,3 +198,8 @@
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#dedicated_server_step = 0.1
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# Can be set to true to disable shutting down on invalid world data
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#ignore_world_load_errors = false
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# Congestion control parameters
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# time in seconds, rate in ~500B packets
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#congestion_control_aim_rtt = 0.2
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#congestion_control_max_rate = 400
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#congestion_control_min_rate = 10
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@ -25,6 +25,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
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#include "util/serialize.h"
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#include "util/numeric.h"
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#include "util/string.h"
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#include "settings.h"
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namespace con
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{
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@ -466,7 +467,10 @@ Peer::Peer(u16 a_id, Address a_address):
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m_sendtime_accu(0),
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m_max_packets_per_second(10),
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m_num_sent(0),
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m_max_num_sent(0)
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m_max_num_sent(0),
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congestion_control_aim_rtt(0.2),
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congestion_control_max_rate(400),
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congestion_control_min_rate(10)
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{
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}
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Peer::~Peer()
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@ -477,15 +481,15 @@ void Peer::reportRTT(float rtt)
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{
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if(rtt >= 0.0){
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if(rtt < 0.01){
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if(m_max_packets_per_second < 400)
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if(m_max_packets_per_second < congestion_control_max_rate)
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m_max_packets_per_second += 10;
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} else if(rtt < 0.2){
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if(m_max_packets_per_second < 100)
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} else if(rtt < congestion_control_aim_rtt){
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if(m_max_packets_per_second < congestion_control_max_rate)
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m_max_packets_per_second += 2;
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} else {
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m_max_packets_per_second *= 0.8;
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if(m_max_packets_per_second < 10)
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m_max_packets_per_second = 10;
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if(m_max_packets_per_second < congestion_control_min_rate)
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m_max_packets_per_second = congestion_control_min_rate;
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}
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}
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@ -891,12 +895,24 @@ void Connection::receive()
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void Connection::runTimeouts(float dtime)
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{
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float congestion_control_aim_rtt
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= g_settings->getFloat("congestion_control_aim_rtt");
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float congestion_control_max_rate
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= g_settings->getFloat("congestion_control_max_rate");
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float congestion_control_min_rate
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= g_settings->getFloat("congestion_control_min_rate");
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core::list<u16> timeouted_peers;
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core::map<u16, Peer*>::Iterator j;
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j = m_peers.getIterator();
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for(; j.atEnd() == false; j++)
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{
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Peer *peer = j.getNode()->getValue();
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// Update congestion control values
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peer->congestion_control_aim_rtt = congestion_control_aim_rtt;
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peer->congestion_control_max_rate = congestion_control_max_rate;
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peer->congestion_control_min_rate = congestion_control_min_rate;
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/*
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Check peer timeout
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@ -394,7 +394,11 @@ public:
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float m_max_packets_per_second;
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int m_num_sent;
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int m_max_num_sent;
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// Updated from configuration by Connection
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float congestion_control_aim_rtt;
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float congestion_control_max_rate;
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float congestion_control_min_rate;
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private:
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};
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@ -106,6 +106,11 @@ void set_default_settings(Settings *settings)
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settings->setDefault("sound_volume", "0.8");
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settings->setDefault("desynchronize_mapblock_texture_animation", "true");
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settings->setDefault("mip_map", "false");
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settings->setDefault("anisotropic_filter", "false");
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settings->setDefault("bilinear_filter", "false");
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settings->setDefault("trilinear_filter", "false");
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// Server stuff
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// "map-dir" doesn't exist by default.
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settings->setDefault("default_game", "minetest");
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@ -142,10 +147,8 @@ void set_default_settings(Settings *settings)
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settings->setDefault("full_block_send_enable_min_time_from_building", "2.0");
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settings->setDefault("dedicated_server_step", "0.1");
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settings->setDefault("ignore_world_load_errors", "false");
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settings->setDefault("mip_map", "false");
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settings->setDefault("anisotropic_filter", "false");
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settings->setDefault("bilinear_filter", "false");
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settings->setDefault("trilinear_filter", "false");
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settings->setDefault("congestion_control_aim_rtt", "0.2");
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settings->setDefault("congestion_control_max_rate", "400");
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settings->setDefault("congestion_control_min_rate", "10");
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}
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