TCP_Process_ack() unblocks RTCS_selectset() regardless of sockset

daido — Sat, 22 Mar 2014 07:02:34 GMT

I'm using MQX 4.0.2.2.

TCP_Process_ack() unblocks RTCS_selectset() regardless of sockset.

Undesired Scket handle is returned.

It was no such a thing until in MQX 4.0.1.

Already corrected in MQX 4.1.0 ?

Re: TCP_Process_ack() unblocks RTCS_selectset() regardless of sockset

Martin_ — Mon, 24 Mar 2014 09:38:51 GMT

You're right, there is such problem. In sosel.c, function _SOCK_select_signal:

         /* check if sock is on the select waiting list (array) */
//         if (!flag)
         {         
            for (i = 0; i < parms->sock_count; i++)
            {
                if (parms->sock_ptr[i] == sock)
                {
                    break;
                }  
            }
               
            if(i >= parms->sock_count)
            {
                continue;
            }
               
         }

I think just comment out line 2 in the above code snippet should help. (remove the !flag condition).

There will be a new BSD-like select() function in next MQX release. MQX 4.1.0 still has this problem.

MQX Software SolutionsのトピックTCP_Process_ack() unblocks RTCS_selectset() regardless of sockset

TCP_Process_ack() unblocks RTCS_selectset() regardless of sockset

Re: TCP_Process_ack() unblocks RTCS_selectset() regardless of sockset