[lwip-devel] [bug #50912] RST dropped if recvmbox is full

[Simon Goldschmidt]

URL:
  <http://savannah.nongnu.org/bugs/?50912>

                 Summary: RST dropped if recvmbox is full
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: goldsimon
            Submitted on: Tue 02 May 2017 10:27:22 AM UTC
                Category: TCP
                Severity: 3 - Normal
              Item Group: Faulty Behaviour
                  Status: None
                 Privacy: Public
             Assigned to: goldsimon
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None
            lwIP version: git head

    _______________________________________________________

Details:

Since ensuring that data before RST can be received (bug #50088, see commit
e0a2472706ee7af99cd00d35bc7e5829aea5caea), the RST can be lost if the recvmbox
is full.
Same thing for listening pcbs and acceptmbox, but 'err_tcp' is only triggered
internally by the stack.

There should be a fallback mechanism to ensure RST is received when
sys_mbox_trypost() fails.




    _______________________________________________________

Reply to this item at:

  <http://savannah.nongnu.org/bugs/?50912>

_______________________________________________
  Message sent via/by Savannah
  http://savannah.nongnu.org/