[lwip-devel] [bug #20515] TCP delyed ack does not work as expected

[Simon Goldschmidt]

URL:
  <http://savannah.nongnu.org/bugs/?20515>

                 Summary: TCP delyed ack does not work as expected
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: goldsimon
            Submitted on: Mittwoch 18.07.2007 um 18:46
                Category: TCP
                Severity: 2 - Minor
              Item Group: Change Request
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: 

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Details:

On a full-streaming connection (i.e. sending only MSS-size packets, e.g. a
good FTP connection), other stacks (I know...) send an ACK with every second
packet, while lwIP sends an ACK with _every_ packet (if the rcv_wnd is >
TCP_WND/2).

In my opinion, this should be changed.

The solution would be to change the if clause that calls tcp_ack_now() in
tcp_recved().




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