AwaClientSession_Connect fails with AwaError_IPCError when STDIN has been closed about awalwm2m HOT 1 CLOSED

Looks like you need to reopen the file descriptors pointing at /dev/null.
Adding the following after your close() calls fixes your issue.

int fd;

fd = open("/dev/null",O_RDWR, 0);

if (fd != -1) 
{   
  dup2 (fd, STDIN_FILENO);
  dup2 (fd, STDOUT_FILENO);
  dup2 (fd, STDERR_FILENO);

  if (fd > 2)
  close (fd);
}

See section 4 of this http://codingfreak.blogspot.com/2012/03/daemon-izing-process-in-linux.html

You could also use daemon() to save yourself a lot of this forking work.

from awalwm2m.