internal override void OnACK_UpdateWindow(RUDPOutgoingPacket packet)
{
//---- Reset
_outOfOrderCount = 0;
//---- Check the phase
if (CWND <= _ssthresh)
Phase = Phase.SlowStart;
else
Phase = Phase.CongestionAvoidance;
//---- Slow start
if (Phase == Phase.SlowStart)
{
// Exponential grow
CWND += _rudp.MTU;
}
//---- Congestion avoidance
if (Phase == Phase.CongestionAvoidance)
{
// (increase of 1 packet every RTT)
// This is a linear growth of cwnd.
CWND += (_rudp.MTU * _rudp.MTU) / CWND;
}
//---- Check boundaries
CWND = Math.Max(Math.Min(_awnd, _cwnd), _rudp._mtu);
//---- Update slow start threshold
if (_ssthresh < CWND)
_ssthresh = Math.Min(64 * 1024, CWND);
}
internal override void OnACK_UpdateWindow(RUDPOutgoingPacket packet)
{
if (CWND < low_window)
{
CWND = CWND + _rudp.MTU / CWND; // normal TCP = (1 packet/cwnd)
return;
}
if (!is_BITCP_ss)
{
// bin. increase
if ((target_win - CWND) < Smax) // bin. search
{
CWND += (target_win - CWND) / CWND;
}
else
{
CWND += Smax / CWND; // additive incre.
}
if (max_win > CWND)
{
min_win = CWND;
target_win = (max_win + min_win) / 2;
}
else
{
is_BITCP_ss = true;
ss_cwnd = 1;
ss_target = CWND + 1;
max_win = default_max_win;
}
}
else
{
// slow start
CWND = CWND + ss_cwnd / CWND;
if (CWND >= ss_target)
{
ss_cwnd = 2.0 * ss_cwnd;
ss_target = CWND + ss_cwnd;
}
if (ss_cwnd >= Smax)
{
is_BITCP_ss = false;
}
}
}
internal override void OnACK_UpdateWindow(RUDPOutgoingPacket packet)
{
delay_min = Math.Min(_rudp._rtt, delay_min);
if (CWND < ssthresh)
{
CWND++; //slow start
}
else
{
if (epoch_start == 0)
{
epoch_start = HiResTimer.MicroSeconds;
K = Math.Max(0, Math.Pow(b * (last_max - CWND), 1.0 / 3));
origin_point = Math.Max(CWND, last_max);
}
t = HiResTimer.MicroSeconds + delay_min - epoch_start;
target = origin_point + c * Math.Pow(t - K, 1.0 / 3);
if (target > CWND)
{
cnt = CWND / (target - CWND);
}
else
{
cnt = 100 * CWND;
}
if (delay_min > 0)
{
cnt = Math.Max(cnt, 8 * CWND / (20 * delay_min)); //max AI rate
}
if (loss_cwnd == 0)
{
cnt = 50; // continue exponential increase before first backoff
}
if (cwnd_cnt > cnt)
{
CWND++;
cwnd_cnt = 0;
}
else
{
cwnd_cnt++;
}
}
}
internal override void OnACK_UpdateWindow(RUDPOutgoingPacket packet)
{
if (CWND < low_window)
{
CWND = CWND + _rudp.MTU / CWND; // normal TCP = (1 packet/cwnd)
return;
}
if (!is_BITCP_ss)
{
// bin. increase
if ((target_win - CWND) < Smax) // bin. search
CWND += (target_win - CWND) / CWND;
else
CWND += Smax / CWND; // additive incre.
if (max_win > CWND)
{
min_win = CWND;
target_win = (max_win + min_win) / 2;
}
else
{
is_BITCP_ss = true;
ss_cwnd = 1;
ss_target = CWND + 1;
max_win = default_max_win;
}
}
else
{
// slow start
CWND = CWND + ss_cwnd / CWND;
if (CWND >= ss_target)
{
ss_cwnd = 2.0 * ss_cwnd;
ss_target = CWND + ss_cwnd;
}
if (ss_cwnd >= Smax)
is_BITCP_ss = false;
}
}
internal override void OnACK_UpdateWindow(RUDPOutgoingPacket packet)
{
//---- Reset
_outOfOrderCount = 0;
//---- Check the phase
if (CWND <= _ssthresh)
{
Phase = Phase.SlowStart;
}
else
{
Phase = Phase.CongestionAvoidance;
}
//---- Slow start
if (Phase == Phase.SlowStart)
{
// Exponential grow
CWND += _rudp.MTU;
}
//---- Congestion avoidance
if (Phase == Phase.CongestionAvoidance)
{
// (increase of 1 packet every RTT)
// This is a linear growth of cwnd.
CWND += (_rudp.MTU * _rudp.MTU) / CWND;
}
//---- Check boundaries
CWND = Math.Max(Math.Min(_awnd, _cwnd), _rudp._mtu);
//---- Update slow start threshold
if (_ssthresh < CWND)
{
_ssthresh = Math.Min(64 * 1024, CWND);
}
}
internal override void OnACK_UpdateWindow(RUDPOutgoingPacket packet)
{
delay_min = Math.Min(_rudp._rtt, delay_min);
if (CWND < ssthresh)
CWND++; //slow start
else
{
if (epoch_start == 0)
{
epoch_start = HiResTimer.MicroSeconds;
K = Math.Max(0, Math.Pow(b * (last_max - CWND), 1.0 / 3));
origin_point = Math.Max(CWND, last_max);
}
t = HiResTimer.MicroSeconds + delay_min - epoch_start;
target = origin_point + c * Math.Pow(t - K, 1.0 / 3);
if (target > CWND)
cnt = CWND / (target - CWND);
else
cnt = 100 * CWND;
if (delay_min > 0)
cnt = Math.Max(cnt, 8 * CWND / (20 * delay_min)); //max AI rate
if (loss_cwnd == 0)
cnt = 50; // continue exponential increase before first backoff
if (cwnd_cnt > cnt)
{
CWND++;
cwnd_cnt = 0;
}
else
cwnd_cnt++;
}
}
