Add ping(), and a logic fix in SelfAwareness.

node/Peer.hpp

@@ -182,6 +182,23 @@ public:
 	 */
 	void attemptToContactAt(const RuntimeEnvironment *RR,const InetAddress &atAddress,unsigned int linkDesperation,uint64_t now);
 
+	/**
+	 * Send a HELLO to all active direct paths
+	 *
+	 * @param RR Runtime environment
+	 * @param now Current time
+	 */
+	inline void ping(const RuntimeEnvironment *RR,uint64_t now)
+	{
+		unsigned int np = _numPaths;
+		for(unsigned int p=0;p<np;++p) {
+			if (_paths[p].active(now)) {
+				attemptToContactAt(RR,_paths[p].address(),_paths[p].desperation(now),now);
+				_paths[p].sent(now);
+			}
+		}
+	}
+
 	/**
 	 * @return All known direct paths to this peer
 	 */

node/SelfAwareness.cpp

@@ -78,7 +78,9 @@ void SelfAwareness::iam(const InetAddress &reporterPhysicalAddress,const InetAdd
 		else {
 			Mutex::Lock _l(_lock);
 			InetAddress &lastPhy = _lastPhysicalAddress[scope - 1];
-			if ((lastPhy)&&(lastPhy != myPhysicalAddress)) {
+			if (!lastPhy) {
+				lastPhy = myPhysicalAddress;
+			} else if (lastPhy != myPhysicalAddress) {
 				lastPhy = myPhysicalAddress;
 				_ResetWithinScope rset(RR,RR->node->now(),(InetAddress::IpScope)scope);
 				RR->topology->eachPeer<_ResetWithinScope &>(rset);