[lwip-devel] [bug #55744] memp_malloc: out of memory in pool TCP_PCB_LISTEN

[Allen Tseng]

URL:
  <https://savannah.nongnu.org/bugs/?55744>

                 Summary: memp_malloc: out of memory in pool TCP_PCB_LISTEN
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: love2006806
            Submitted on: Wed 20 Feb 2019 09:40:02 AM UTC
                Category: TCP
                Severity: 3 - Normal
              Item Group: Crash Error
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None
            lwIP version: 1.4.1

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Details:

Hello
I'm not sure is this a bug.
I use raw api in non-os environment.
My application is TCP server.
The flow is below:
1.Create two raw socket server.(port A, port B)
First for data exchange, and a second socket for reopen the two socket.(Two
socket port are different)

2.When port A connecting, other client connect port B.
Port B receive callback function will call close_conn() to close itself. And I
will call close_conn to close port A.
After port A pcb->state was CLOSED, use tcp_close() to let port A and port B
pcb->state to CLOSED from listen state and CLOSED again to remove
tcp_bound_pcb.

3.Recreate two raw socket server.

Question is in step.3.
After create port A, when port B in listen function, it show the below message
and lwip is not work.
message:
memp_malloc: out of memory in pool TCP_PCB_LISTEN

Please correct me if anything wrong.

Please help me, I really need to solve.
Thank you.




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