[lwip-devel] [bug #62231] LwIP tcp socket stalls when "plug pulled", creates leak when closed

[Chris Hultqvist]

URL:
  <https://savannah.nongnu.org/bugs/?62231>

                 Summary: LwIP tcp socket stalls when "plug pulled", creates
leak when closed
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: chrishul
            Submitted on: Tue 29 Mar 2022 10:52:34 AM UTC
                Category: sockets/netconn
                Severity: 3 - Normal
              Item Group: Faulty Behaviour
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None
            lwIP version: 2.1.3

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Details:

Socket connection stalls when other peer is reset and cannot be reached.
Connection only resolves by itself after 2 hours.

When socket is closed by force it leaves behind small chunks on the Heap (0-36
bytes),

Running espressif idf framework and unable to read actual lwIP version in
release. Using Mongoose 7.4 layer.

Refer to https://github.com/espressif/esp-idf/issues/8668
for details




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