diff --git a/panda/src/net/Sources.pp b/panda/src/net/Sources.pp
index 99a676985a..a66095d832 100644
--- a/panda/src/net/Sources.pp
+++ b/panda/src/net/Sources.pp
@@ -19,7 +19,8 @@
      netAddress.h netDatagram.I netDatagram.h  \
      pprerror.h queuedConnectionListener.I  \
      queuedConnectionListener.h queuedConnectionManager.h  \
-     queuedConnectionReader.h recentConnectionReader.h 
+     queuedConnectionReader.h recentConnectionReader.h \
+     queuedReturn.h queuedReturn.I
 
   #define INCLUDED_SOURCES \ \
      config_net.cxx connection.cxx connectionListener.cxx  \
diff --git a/panda/src/net/queuedReturn.I b/panda/src/net/queuedReturn.I
index 28013e44cf..63e4611e52 100644
--- a/panda/src/net/queuedReturn.I
+++ b/panda/src/net/queuedReturn.I
@@ -66,6 +66,32 @@ get_current_queue_size() const {
   return size;
 }
 
+////////////////////////////////////////////////////////////////////
+//     Function: QueuedReturn::get_overflow_flag
+//       Access: Published
+//  Description: Returns true if the queue has overflowed since the
+//               last call to reset_overflow_flag() (implying that
+//               some elements have been dropped from the queue), or
+//               false otherwise.
+////////////////////////////////////////////////////////////////////
+template<class Thing>
+bool QueuedReturn<Thing>::
+get_overflow_flag() const {
+  return _overflow_flag;
+}
+
+////////////////////////////////////////////////////////////////////
+//     Function: QueuedReturn::reset_overflow_flag
+//       Access: Published
+//  Description: Resets the overflow flag so that get_overflow_flag()
+//               will return false until a new overflow occurs.
+////////////////////////////////////////////////////////////////////
+template<class Thing>
+void QueuedReturn<Thing>::
+reset_overflow_flag() {
+  _overflow_flag = false;
+}
+
 ////////////////////////////////////////////////////////////////////
 //     Function: QueuedReturn::Constructor
 //       Access: Protected
@@ -77,6 +103,7 @@ QueuedReturn() {
   _mutex = PR_NewLock();
   _available = false;
   _max_queue_size = get_net_max_response_queue();
+  _overflow_flag = false;
 }
 
 ////////////////////////////////////////////////////////////////////
@@ -147,6 +174,8 @@ enqueue_thing(const Thing &thing) {
   bool enqueue_ok = ((int)_things.size() < _max_queue_size);
   if (enqueue_ok) {
     _things.push_back(thing);
+  } else {
+    _overflow_flag = true;
   }
   _available = true;
   PR_Unlock(_mutex);
@@ -176,6 +205,9 @@ enqueue_unique_thing(const Thing &thing) {
       // It was already there; return false to indicate this.
       enqueue_ok = false;
     }
+
+  } else {
+    _overflow_flag = true;
   }
   _available = true;
   PR_Unlock(_mutex);
diff --git a/panda/src/net/queuedReturn.h b/panda/src/net/queuedReturn.h
index 5b2c1b09be..eba8b3ebf2 100644
--- a/panda/src/net/queuedReturn.h
+++ b/panda/src/net/queuedReturn.h
@@ -42,6 +42,9 @@ PUBLISHED:
   int get_max_queue_size() const;
   int get_current_queue_size() const;
 
+  bool get_overflow_flag() const;
+  void reset_overflow_flag();
+
 protected:
   QueuedReturn();
   ~QueuedReturn();
@@ -57,6 +60,7 @@ private:
   pdeque<Thing> _things;
   bool _available;
   int _max_queue_size;
+  bool _overflow_flag;
 };
 
 #include "queuedReturn.I"