force minimum for p_hrc time_point values

libraries/networking/src/udt/CongestionControl.h

@@ -108,7 +108,8 @@ public:
 private:
     void stopSlowStart(); // stops the slow start on loss or timeout
     
-    p_high_resolution_clock::time_point _lastRCTime; // last rate increase time
+    p_high_resolution_clock::time_point _lastRCTime = p_high_resolution_clock::time_point().min(); // last rate increase time
+    
     bool _slowStart { true };	// if in slow start phase
     SequenceNumber _slowStartLastAck; // last ACKed seq num
     bool _loss { false };	// if loss happened since last rate increase

libraries/networking/src/udt/Connection.cpp

@@ -222,7 +222,7 @@ void Connection::recordRetransmission() {
 }
 
 void Connection::sendACK(bool wasCausedBySyncTimeout) {
-    static p_high_resolution_clock::time_point lastACKSendTime;
+    static p_high_resolution_clock::time_point lastACKSendTime = p_high_resolution_clock::time_point().min();
     auto currentTime = p_high_resolution_clock::now();
     
     SequenceNumber nextACKNumber = nextACK();
@@ -534,7 +534,7 @@ void Connection::processACK(std::unique_ptr<ControlPacket> controlPacket) {
     // This will be the case if it has been longer than the sync interval OR
     // it looks like they haven't received our ACK2 for this ACK
     auto currentTime = p_high_resolution_clock::now();
-    static p_high_resolution_clock::time_point lastACK2SendTime;
+    static p_high_resolution_clock::time_point lastACK2SendTime = p_high_resolution_clock::time_point().min();
     
     microseconds sinceLastACK2 = duration_cast<microseconds>(currentTime - lastACK2SendTime);
     
@@ -779,7 +779,7 @@ void Connection::resetReceiveState() {
     
     // clear the loss list and _lastNAKTime
     _lossList.clear();
-    _lastNAKTime = p_high_resolution_clock::time_point();
+    _lastNAKTime = p_high_resolution_clock::time_point().min();
     
     // the _nakInterval need not be reset, that will happen on loss
     

libraries/networking/src/udt/Connection.h

@@ -114,13 +114,13 @@ private:
     
     int _nakInterval { -1 }; // NAK timeout interval, in microseconds, set on loss
     int _minNAKInterval { 100000 }; // NAK timeout interval lower bound, default of 100ms
-    p_high_resolution_clock::time_point _lastNAKTime;
+    p_high_resolution_clock::time_point _lastNAKTime = p_high_resolution_clock::time_point().min();
     
     bool _hasReceivedHandshake { false }; // flag for receipt of handshake from server
     bool _hasReceivedHandshakeACK { false }; // flag for receipt of handshake ACK from client
    
-    p_high_resolution_clock::time_point _connectionStart; // holds the time_point for creation of this connection
+    p_high_resolution_clock::time_point _connectionStart = p_high_resolution_clock::time_point().min(); // holds the time_point for creation of this connection
-    p_high_resolution_clock::time_point _lastReceiveTime; // holds the last time we received anything from sender
+    p_high_resolution_clock::time_point _lastReceiveTime = p_high_resolution_clock::time_point().min(); // holds the last time we received anything from sender
     bool _isReceivingData { false }; // flag used for expiry of receipt portion of connection
     
     LossList _lossList; // List of all missing packets

libraries/networking/src/udt/PacketTimeWindow.h

@@ -42,8 +42,8 @@ private:
     std::vector<int> _packetIntervals; // vector of microsecond intervals between packet arrivals
     std::vector<int> _probeIntervals; // vector of microsecond intervals between probe pair arrivals
     
-    p_high_resolution_clock::time_point _lastPacketTime; // the time_point when last packet arrived
+    p_high_resolution_clock::time_point _lastPacketTime = p_high_resolution_clock::time_point().min(); // the time_point when last packet arrived
-    p_high_resolution_clock::time_point _firstProbeTime; // the time_point when first probe in pair arrived
+    p_high_resolution_clock::time_point _firstProbeTime = p_high_resolution_clock::time_point().min(); // the time_point when first probe in pair arrived
 };
     
 }

libraries/networking/src/udt/SendQueue.cpp

@@ -281,7 +281,7 @@ void SendQueue::run() {
             // if it has been at least 100ms since we last sent a handshake, send another now
             
             // hold the time of last send in a static
-            static auto lastSendHandshake = p_high_resolution_clock::time_point();
+            static auto lastSendHandshake = p_high_resolution_clock::time_point().min();
             
             static const auto HANDSHAKE_RESEND_INTERVAL_MS = std::chrono::milliseconds(100);