How to stop RTCS DHCP server

[JasonPeng]

Hi All,

I am using RTCS DHCP server on the MQX 4.02. DHCP server is working on our product.

As our product requirement, I need to stop the RTCS DHCP server. In the MQX_RTCS_User_Guide.pdf, I can't find the stop DHCP server API.

Can anyone give me some insight how to stop RTCS DHCP server?

Thanks in advance,

Jason

[Luis_Garabo]

Hi Jason,

Just as you pointed, there is not a function to stop the DHCP server. What you can do is to kill the task. Take this code as an example:

/* Start DHCP Server: */

error = DHCPSRV_init(“DHCP server”, 7, 2000);

/* Kill DHCP server */

task_id = _task_get_id_from_name(“DHCP server”);

_task_abort(task_id);

I hope this helps.

Have a great day,
Garabo

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[JasonPeng]

Hi Garabo,

Thank you for your reply.

The DHCP server task can be killed after running your code.

However I got the error when I restart DHCP server.

  // Start DHCP Server

    error = DHCPSRV_init("DHCP server", 7, 2000);

    if (error != RTCS_OK) {  <== error is 0x1663 (RTCSERR_UDP_PORT_OPEN)

      return error;

    }

Any idea?

Thanks a lot!

Jason

[Luis_Garabo · Accepted solution]

Hi Jason,

The error makes sense. This is a brutal stop for the DHCP. This means that there is not a clean up of the sockets used by the task. You will need to create a function that kills the DHCP task and clean up all the resources associated to it.

Have a great day,
Garabo

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