[GitHub] [incubator-nuttx] anchao commented on a change in pull request #2414: net/tcp: implement the fast retransmit

[GitBox]

anchao commented on a change in pull request #2414:
URL: https://github.com/apache/incubator-nuttx/pull/2414#discussion_r533384983



##########
File path: net/tcp/tcp_send_buffered.c
##########
@@ -484,6 +485,28 @@ static uint16_t psock_send_eventhandler(FAR struct 
net_driver_s *dev,
                         wrb, TCP_WBSEQNO(wrb), TCP_WBPKTLEN(wrb));
                 }
             }
+          else if (ackno == TCP_WBSEQNO(wrb))
+            {
+              /* Duplicate ACK? Retransmit data if need */
+
+              TCP_WBNACK(wrb)++;
+
+              if (TCP_WBNACK(wrb) ==

Review comment:
       Done
   




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