Re: [lwip-users] Half-Open detecting

[Steven Woody]

On 21 April 2011 22:18, Kieran Mansley <address@hidden> wrote:
> On Thu, 2011-04-21 at 22:14 +0800, Steven Woody wrote:
>>
>> What mean I have to have a listening PCB?  I had ever had it, but it
>> comes a active pcb, when the tcp_accept() get called and succeed.
>
> Ahh wait I think I understand your confusion.  When your accept callback
> is called as a result of a new connection the PCB you're given is a new
> one, it's not the listening one, and the listening one has not become an
> active PCB.  Your listening PCB is still there and still listening
> (unless you've closed it) and you will still get your accept callback
> called on it (with another new PCB) if a matching SYN arrives.
>
> Kieran
>

Ahh!  I've recalled what I learned in university 10 years ago.  Yes,
you're absolutely right.  Now I think I've fully understood on the
topic.  It's nice to talk with you!

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