[Sumover-dev] [svn commit] r4322 - vic/branches/cc/cc

[sumover-dev at cs.ucl.ac.uk]

Author: soohyunc
Date: Mon Nov 17 18:36:56 2008
New Revision: 4322

Modified:
   vic/branches/cc/cc/tfwc_rcvr.cpp

Log:
o  bug fix
   -  there was a bug when calculating the number of lost packets.
   -  after shifting bits to 0 as equal to the number of lost packets, it must set
      1 at the end of bit shifting because a packet has just been received 
      successfully.

for example, if the received ackvec is (4 1) - e.g., two packet loss (#2
and #3), then the ackvec bit shifting should work like,

1) find out two packet loss
2) 0 bit  shifting twice because two packet loss
3) and perform 1 bit shifting (this is corresponding packet seqno #4)



Modified: vic/branches/cc/cc/tfwc_rcvr.cpp
==============================================================================
--- vic/branches/cc/cc/tfwc_rcvr.cpp	(original)
+++ vic/branches/cc/cc/tfwc_rcvr.cpp	Mon Nov 17 18:36:56 2008
@@ -71,10 +71,13 @@
 			// number of packet loss
 			int cnt = currseq_ - prevseq_ - 1;
 
-			// set next bit to 0
+			// set next bit to 0 equal to the number of lost packets
 			for (int i = 0; i < cnt; i++) {
 				SET_BIT_VEC(tfwcAV, 0);
 			}
+
+			// then, set this packet as received (this is important)
+			SET_BIT_VEC(tfwcAV, 1);
 		}
 
 		// trim ackvec