Re: [lwip-devel] tcp_new() returns an in-used pcb?

[Kieran Mansley]

On 2 Apr 2012, at 07:33, narke wrote:

> Hi,
> 
> Is there any reason that could cause tcp_new() returns a pcb which
> however is already in tcp_active_pcbs list.  I found this seemed
> happen when my application quite often open and then close
> connections. The newly allocated pcb returned from tcp_new()
> eventually caused my program dead when it was being inserted into the
> tcp_active_pcbs list by lwip code.
> 
> Is it possible any bug around here?  Thanks in advance.

If that were happening, yes, it's a bug.  But it's most likely a bug in the way 
you're using lwIP rather than in lwIP itself.  E.g. creating sockets from two 
threads at the same time could I think result in this.

Kieran