Require longer delays before disconnecting peers

src/ripple/overlay/impl/PeerImp.cpp

@@ -537,6 +537,17 @@ PeerImp::onTimer (error_code const& ec)
         send (std::make_shared<Message> (
             message, protocol::mtPING));
     }
+    else
+    {
+        // We have an outstanding ping, raise latency        
+        auto minLatency = std::chrono::duration_cast <std::chrono::milliseconds>
+            (clock_type::now() - lastPingTime_);
+
+        std::lock_guard<std::mutex> sl(recentLock_);
+
+        if (latency_ < minLatency)
+            latency_ = minLatency;
+    }
 
     setTimer();
 }

src/ripple/overlay/impl/Tuning.h

@@ -54,16 +54,16 @@ enum
     checkSeconds        =   10,
 
     /** How often we latency/sendq probe connections */
-    timerSeconds        =    3,
+    timerSeconds        =    4,
 
     /** How many timer intervals a sendq has to stay large before we disconnect */
-    sendqIntervals      =    3,
+    sendqIntervals      =    4,
 
     /** How many timer intervals we can go without a ping reply */
-    noPing              =    4,
+    noPing              =   10,
 
     /** How many messages on a send queue before we refuse queries */
-    dropSendQueue       =    5,
+    dropSendQueue       =    8,
 
     /** How many messages we consider reasonable sustained on a send queue */
     targetSendQueue     =   16,