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

From: Allen Tseng
Subject: [lwip-devel] [bug #55744] memp_malloc: out of memory in pool TCP_PCB_LISTEN
Date: Wed, 20 Feb 2019 04:40:05 -0500 (EST)
User-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.109 Safari/537.36


                 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



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

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.
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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