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Re: [lwip-users] 答复: how to release allocate d TCB
From: |
vincent cui |
Subject: |
Re: [lwip-users] 答复: how to release allocate d TCB |
Date: |
Sat, 21 Jul 2012 07:44:23 +0000 |
Simon:
You are correct, after waiting 2Min and create it again , it works now .
But it maybe client socket is active too when user connect to TELNET
application, we must close listen socket and client socket together in this
case
Vincent
-----Original Message-----
From: address@hidden [mailto:address@hidden On Behalf Of Simon Goldschmidt
Sent: 2012年7月21日 6:27
To: Mailing list for lwIP users
Subject: Re: [lwip-users] 答复: how to release allocated TCB
Kieran Mansley <address@hidden> wrote:
>
> On 20 Jul 2012, at 15:35, vincent cui wrote:
>
>> Hi:
>>
>> I use socket api to do that.
>
> Is it possible that the old socket is just in the TCP TIME_WAIT state, and
> will be cleared up after a short while? If you're calling close() on your
> sockets, that is all you should need to do.
That sounds like a good explanation: from the original post, I think he closed
the listening socket and reopened it and called listen() again. I think that
really doesn't work as long as there are old connections in time-wait, so
trying to create the listening socket again after 2 minutes should probably
succeed...
Simon
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