[lwip-users] Non-blocking netconn_write?

[Dany Thiffeault]

Hi,

I just found out that "netconn_write" is blocking indefinitely, or until the operation completes. This is a problem for me. I'm currently testing my system to react correctly when an Ethernet disconnection occurs. There are safety features I must implement and one of them is to stop everything as soon as I detect a disconnection or a communication problem over Ethernet.

So, what I had in mind is to change this:

tcpip_apimsg(struct api_msg *apimsg)

{

  struct tcpip_msg msg;

  

  if (mbox != SYS_MBOX_NULL) {

    msg.type = TCPIP_MSG_API;

    msg.msg.apimsg = apimsg;

    sys_mbox_post(mbox, &msg);

    sys_arch_sem_wait(apimsg->msg.conn->op_completed, 0);       <----------------------- change the 0 to another value.

    return ERR_OK;

  }

  return ERR_VAL;

}

For you lwip experts, any problems with what I suggest??

Thanks!!!

Dany