Re: [lwip-users] exception in the second call to netconn_bind

[Jonathan Larmour]

David Shmelzer wrote:
> Hi,
> I'm getting a processor exception in the second call to netconn_bind.
> Here is the simplified version of the code that reproduces the problem:
>
>   conn=netconn_new( NETCONN_TCP );
>   netconn_bind(conn, NULL, portnum);
>   netconn_listen( conn );
>   netconn_delete(conn);
>   conn=netconn_new( NETCONN_TCP );
>   netconn_bind(conn, NULL, portnum);
> What is the correct way of deleting a listening connection?

That looks right. It might be worth checking for any error returns from 
the above. In particular if conn is non-NULL second time round. I assume 
all this gets called from a single thread.

> Is there an example somewhere? The BasicWeb.c examples never close the
> listening connection. 

There's an example in http://www.sics.se/~adam/lwip/doc/lwip.pdf section 
16.0.22 (just after the documentation of netconn_bind).

Jifl
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