Re: [lwip-users] Listen on more then one port with lwIP

[YAP]

OK Thanks I will try that.

I noticed that netcon_new returns zero if both threads are started so
the problem really appears to be there. Looks like a memory problem.

/Ake


On Fri, Jan 2, 2009 at 11:06 AM, Muhamad Ikhwan Ismail
<address@hidden> wrote:
>
> Hi,
>
> It seems to me you might have a concurrent access problem on your sys_arch
> layer since
> when you had the 2 listener socket in a single task, it worked. Try
> something like this,
>
> -Block both thread
> -start one of them, and wait till the netconn_accept is done
> -start the 2nd thread after that
>
> If it works then my assumption could be right. The only thing the 2 socket
> shares in netconn_accept is the
> mailbox of the tcpip tasks and the same function call on sys_arch layers.
>
> If that the case you might wanna do preemption protection to critical codes
> in the sys_arch layer?
>
>> Date: Fri, 2 Jan 2009 10:55:06 +0100
>> From: address@hidden
>> To: address@hidden
>> Subject: Re: [lwip-users] Listen on more then one port with lwIP
>>
>> as you top post I do so to so the source is preserved below.
>>
>> lwIP version is 1.3
>> Microchip GCC C32 MIPS compiler
>> FreeRTOS 5.1.0
>>
>> By not working I mean none of the listner threads return after
>> netconn_accept which they do if I only have one thread.
>>
>> I pretty much expected this to be a usage fault and that the way I use
>> dthe code was invalid.
>>
>> Cheers
>> /Ake
>>
>> On Fri, Jan 2, 2009 at 10:31 AM, Muhamad Ikhwan Ismail
>> <address@hidden> wrote:
>> >
>> > Hi,
>> >
>> > It would help the developer answer your question, if you explain what do
>> > you
>> > mean by it does not work
>> > e.g. where it blocks, you are getting no data or something like that.
>> > You
>> > should also search the mailing list
>> > for previous posts, someone might have asked the same q.
>> >
>> > You might want to info them also of your port and version.
>> >
>> > Greetings
>> > Ikhwan
>> >
>> >
>> >> Date: Thu, 1 Jan 2009 23:00:54 +0100
>> >> From: address@hidden
>> >> To: address@hidden
>> >> Subject: [lwip-users] Listen on more then one port with lwIP
>> >>
>> >> I am new to lwIP and use it with FreeRTOS on a PIC32 so be patient
>> >> with me if this is just a silly question.
>> >>
>> >> I want to have a web server plus a custom interface on the firmware I
>> >> work on at the moment. So I try to solve this starting a new thread
>> >> where I initialised lwip and then start two listner threads for the
>> >> two ports.
>> >>
>> >> This does not work however even if they each work perfect on there own.
>> >>
>> >> How should this be coded correctly? Any hints appreciated.
>> >>
>> >> My listner thread look like this
>> >>
>> >>
>> >>
>> >> ///////////////////////////////////////////////////////////////////////////////
>> >> // taskVSCPListner
>> >> //
>> >>
>> >> void taskVSCPListner( void *pvParameters )
>> >> {
>> >> struct netconn *pxVSCPListener; // Listens for VSCP connections
>> >> struct netconn *pxNewConnection;
>> >>
>> >> // Create a new tcp connection handle for VSCP
>> >> pxVSCPListener = netconn_new( NETCONN_TCP );
>> >> netconn_bind( pxVSCPListener, NULL, VSCP_LEVEL2_TCP_PORT );
>> >> netconn_listen( pxVSCPListener );
>> >>
>> >> // Loop forever
>> >> for( ;; ) {
>> >>
>> >> // Wait for connection.
>> >> pxNewConnection = netconn_accept( pxVSCPListener );
>> >>
>> >> if ( pxNewConnection != NULL ) {
>> >>
>> >> // Service connection.
>> >> vProcessVSCPConnection( pxNewConnection );
>> >>
>> >> while( netconn_delete( pxNewConnection ) != ERR_OK ) {
>> >> vTaskDelay( webSHORT_DELAY );
>> >> }
>> >>
>> >> }
>> >>
>> >> }
>> >> }
>> >>
>> >>
>> >>
>> >>
>> >> ///////////////////////////////////////////////////////////////////////////////
>> >> // taskHTTPListner
>> >> //
>> >>
>> >> void taskHTTPListner( void *pvParameters )
>> >> {
>> >> struct netconn *pxHTTPListener; // Listens for HTTP connections
>> >> struct netconn *pxNewConnection;
>> >>
>> >> // Create a new tcp connection handle for HTTP
>> >> pxHTTPListener = netconn_new( NETCONN_TCP );
>> >> netconn_bind( pxHTTPListener, NULL, webHTTP_PORT );
>> >> netconn_listen( pxHTTPListener );
>> >>
>> >> // Create a new tcp connection handle for VSCP
>> >> //pxVSCPListener = netconn_new( NETCONN_TCP );
>> >> //netconn_bind( pxHTTPListener, NULL, VSCP_LEVEL2_TCP_PORT );
>> >> //netconn_listen( pxVSCPListener );
>> >>
>> >> // Loop forever
>> >> for( ;; ) {
>> >>
>> >> // Wait for connection.
>> >> pxNewConnection = netconn_accept( pxHTTPListener );
>> >>
>> >> if ( pxNewConnection != NULL ) {
>> >>
>> >> // Service connection.
>> >> vProcessConnection( pxNewConnection );
>> >>
>> >> while( netconn_delete( pxNewConnection ) != ERR_OK ) {
>> >> vTaskDelay( webSHORT_DELAY );
>> >> }
>> >>
>> >> }
>> >>
>> >> }
>> >> }
>> >>
>> >> Cheers
>> >> /Ake
>> >>
>> >>
>> >> --
>> >> ---
>> >> Ake Hedman
>> >> D of Scandinavia, http://www.dofscandinavia.com
>> >>
>> >>
>> >> _______________________________________________
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>>
>>
>>
>> --
>> ---
>> Ake Hedman
>> D of Scandinavia, http://www.dofscandinavia.com
>>
>>
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 ---
Ake Hedman
D of Scandinavia, http://www.dofscandinavia.com