Re: [lwip-users] FreeRTOS / lwip multiple connections

[vincent cui]

K:
You mean I need make accept socket to be non-blocking , right ?

锘?Vincent Cui
Sr.Firmware Engineer
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-----Original Message-----
From: address@hidden [mailto:address@hidden On Behalf Of Kieran Mansley
Sent: 2011年8月30日 23:19
To: Mailing list for lwIP users
Subject: Re: [lwip-users] FreeRTOS / lwip multiple connections

On Tue, 2011-08-30 at 14:04 +0000, vincent cui wrote:
> Deal with mult-connection correctly, there is 3 way.

There are lots of ways!

> 3.       Using socket, you must set it with non-blocking and select it
> 
> I use the 3th method. The following code must be add to listen socket.
> 
> 
> Int arg = 0x1;
> 
> lwip_ioctl(listhensocket, FIONBIO, &arg);

I'm not sure why you need your listening socket to be non-blocking.  

> but I found that the listen socket cann’t work once it is set with
> nonblocking…
> now, I remove it, it works … hope someone explain why

I'm not sure if lwIP supports non-blocking listening sockets.  I'd have
to check the source to be sure and I'm short on time.

> other, you also need call lwIP_shutdown and lowip_close to terminate
> socket in order to be avoid to CLOSE_WAIT .

No, either should be fine if you use them correctly.  There are some
small differences between lwIP's shutdown and close and standard
shutdown and close, but we're working towards getting them more
standardised where possible.

Kieran


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