[lwip-devel] [bug #31469] Repetitive lwip_send() calls causes bad behaviour

[Ben]

URL:
  <http://savannah.nongnu.org/bugs/?31469>

                 Summary: Repetitive lwip_send() calls causes bad behaviour
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: bendov
            Submitted on: Tue Oct 26 15:59:12 2010
                Category: TCP
                Severity: 3 - Normal
              Item Group: Faulty Behaviour
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: 
            lwIP version: 1.3.0

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Details:

I'm running lwip 1.3.0 on xilkernel 4.0.
Using lwip_send function in a server application, the following code:

char* str = "something\r\n";
int len = strlen(str);
while (true) 
{
    lwip_send(sd, str, len, 0);
}

is excecuted once a connection to the server is established.
The result is:
1. Only one message ("something\r\n") received on the client.
2. after unknown number of sends the lwip_send function does not return.
after debugging i've found that it is stuck in tcpip_apimsg_lock() (tcpip.c)
and to be more specific in LOCK_TCPIP_CORE().


Any help regarding this issue will be appreciated.
Ben.




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