Limit packet size

src/server/poolserver/Stratum/Client.cpp

@@ -389,6 +389,10 @@ namespace Stratum
                     _recvMessage += c;
             }
 			
+			// Check if message doesn't exceed maximum packet size
+			if (_recvMessage.size() > MAX_PACKET)
+				Disconnect();
+            
             StartRead();
         } else {
             // Client disconnected

src/server/poolserver/Stratum/Server.h

@@ -18,6 +18,8 @@
 #include <set>
 #include <vector>
 
+#define MAX_PACKET 4096
+
 using namespace boost;
 using namespace boost::asio::ip;