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for srt lantency calculate when handshake

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This commit is contained in:
xiongguangjie 2022-06-05 14:09:35 +08:00
parent 3cca4015c5
commit b8806657cd
3 changed files with 8 additions and 4 deletions
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2
srt/PacketQueue.cpp
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@ -49,7 +49,7 @@ void PacketQueue::tryInsertPkt(DataPacket::Ptr pkt){
_pkt_map.emplace(pkt->packet_seq_number, pkt);
TraceL<<" cycle packet "<<"expected seq=" << _pkt_expected_seq << " pkt seq=" << pkt->packet_seq_number;
}else{
TraceL << "drop packet too later "<< "expected seq=" << _pkt_expected_seq << " pkt seq=" << pkt->packet_seq_number;
//TraceL << "drop packet too later "<< "expected seq=" << _pkt_expected_seq << " pkt seq=" << pkt->packet_seq_number;
}
}
}

7
srt/SrtTransport.cpp
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@ -117,7 +117,8 @@ void SrtTransport::handleHandshakeInduction(HandshakePacket &pkt, struct sockadd
sendControlPacket(_handleshake_res, true);
return;
}
_induction_ts = _now;
_start_timestamp = _now;
_init_seq_number = pkt.initial_packet_sequence_number;
_max_window_size = pkt.max_flow_window_size;
_mtu = pkt.mtu;
@ -154,7 +155,7 @@ void SrtTransport::handleHandshakeConclusion(HandshakePacket &pkt, struct sockad
HSExtMessage::Ptr req;
HSExtStreamID::Ptr sid;
uint32_t srt_flag = 0xbf;
uint16_t delay = 120;
uint16_t delay = DurationCountMicroseconds(_now - _induction_ts)*4/1000;
for (auto ext : pkt.ext_list) {
//TraceL << getIdentifier() << " ext " << ext->dump();
@ -170,7 +171,7 @@ void SrtTransport::handleHandshakeConclusion(HandshakePacket &pkt, struct sockad
}
if(req){
srt_flag = req->srt_flag;
delay = req->recv_tsbpd_delay;
delay = delay <= req->recv_tsbpd_delay ? req->recv_tsbpd_delay : delay;
}
TraceL << getIdentifier() << " CONCLUSION Phase ";
HandshakePacket::Ptr res = std::make_shared<HandshakePacket>();

3
srt/SrtTransport.hpp
View File

@ -102,6 +102,9 @@ private:
TimePoint _now;
TimePoint _start_timestamp;
// for calculate rtt for delay
TimePoint _induction_ts;
uint32_t _mtu = 1500;
uint32_t _max_window_size = 8192;
uint32_t _init_seq_number = 0;