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Re: [lwip-users] lwip_send hang (probably due to my allocator)


From: Stephen Cleary
Subject: Re: [lwip-users] lwip_send hang (probably due to my allocator)
Date: Fri, 23 Sep 2011 14:00:01 +0000

> A packet capture would show if you're right about the problem being that
> the stack can't allocate packets to send an ACK.  I'm a bit dubious
> about this.  Could it be that it couldn't allocate memory to post an
> mbox message to the sockets API instead?  The LWIP_STATS code could also
> throw light on where the problem is and so help focus your efforts.

Actually, I think the problem is that the Eth driver can't allocate the pbuf 
for reading an ACK off the wire. So lwip (correctly) won't send more data since 
it never sees the ACK.

      -Steve



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