[lwip-devel] [bug #57639] lwip_close or lwip_shutdown doesn't cancel blocking lwip_recv

[Benjamin K]

URL:
  <https://savannah.nongnu.org/bugs/?57639>

                 Summary: lwip_close or lwip_shutdown doesn't cancel blocking
lwip_recv
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: bkausbk
            Submitted on: Mon 20 Jan 2020 07:29:20 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: 2.1.1

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Details:

While in one task lwip_recv is waiting for new data (and is blocking) it is
not possible to close/shutdown the socket from a second task, at least the
task that is waiting will never stop waiting. In such case lwip_recev should
leave blocking state and return 0 or -1. This is not the expected socket
behaviour.

Is this intended?




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