[lwip-devel] [bug #45559] Window scaling has a problem

[Simon Goldschmidt]

URL:
  <http://savannah.nongnu.org/bugs/?45559>

                 Summary: Window scaling has a problem
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: goldsimon
            Submitted on: Do 16 Jul 2015 08:43:24 GMT
                Category: TCP
                Severity: 3 - Normal
              Item Group: None
                  Status: Confirmed
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: 1.5.0
            lwIP version: git head

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Details:

'wnd' in the syn segment is truncated to 16 bits (so it can be 0 when TCP_WND
is e.g. 0x10000).

It should be either limited to 0xFFFF or set to some default value (as after
the SYN, when window scaling is enabled or not, the real window is
transmitted).




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