A surprisingly simple fix to the InfoSub/websocketpp deadlock.

src/cpp/ripple/WSConnection.h

@@ -54,8 +54,17 @@ public:
 		mPingTimer(theApp->getAuxService()), mPinged(false)
 	{ setPingTimer(); }
 
+	void preDestroy()
+	{ // sever connection
+		mConnection.reset();
+	}
+
 	virtual ~WSConnection() { ; }
 
+	static void destroy(boost::shared_ptr< WSConnection<endpoint_type> >)
+	{ // Just discards the reference
+	}
+
 	// Implement overridden functions from base class:
 	void send(const Json::Value& jvObj)
 	{

src/cpp/ripple/WSHandler.h

@@ -153,6 +153,10 @@ public:
 			ptr = it->second;		// prevent the WSConnection from being destroyed until we release the lock
 			mMap.erase(it);
 		}
+		ptr->preDestroy(); // Must be done before we return
+
+		// Must be done without holding the websocket send lock
+		theApp->getAuxService().post(boost::bind(&WSConnection<endpoint_type>::destroy, ptr));
 	}
 
 	void on_message(connection_ptr cpClient, message_ptr mpMessage)