--- a/src/internet-node/tcp-socket.h	Sat May 03 11:11:24 2008 -0700
+++ b/src/internet-node/tcp-socket.h	Thu May 08 15:31:44 2008 -0400
@@ -160,7 +160,9 @@
   SequenceNumber m_nextRxSequence;
 
   //history data
+  //this is the incoming data buffer which sorts out of sequence data
   UnAckData_t m_bufferedData;
+  //this is kind of the tx buffer
   PendingData* m_pendingData;
   SequenceNumber m_firstPendingSequence;
 
@@ -182,9 +184,12 @@
   
   // Temporary queue for delivering data to application
   std::queue<Ptr<Packet> > m_deliveryQueue;
-  uint32_t m_rxAvailable; 
+  uint32_t m_rxAvailable;
+  
+  // buffer limit for the outgoing queue
+  uint32_t m_maxTxBuffer;
 };
 
 }//namespace ns3
 
-#endif /* UDP_SOCKET_H */
+#endif /* TCP_SOCKET_H */