title: Keep automatically searching for connection snap7
body: <p>We want to autoconnect with the PLC through wifi. When the raspberry is starting up and runs his program automatically. It should be a stand alone raspberry so we don't have a keyboard or anything. We send the data via snap7.
  This works, but if the wifi is disconnecting I get this error: "ISO: An error occurred during recv TCP: Connection timed out"
  Sometimes in the beginning of the program we get this error: "Snap7Exception:  TCP : Unreachable peer"</p>
  
  <p>My program stops but we should have something so our wifi is reconnected again without stopping the program. I guess we need something to catch our error and use this in a program with a try or something. </p>
  
  <p>My program at this moment:</p>
  
  <pre><code>import snap7
  import struct
  import time
  from snap7.snap7exceptions import Snap7Exception
  import re
  from ctypes import c_int, c_char_p, byref, sizeof, c_uint16, c_int32, c_byte
  from ctypes import c_void_p
  
  client = snap7.client.Client()
  
  db_number = 109
  
  print('Press Ctrl-C to quit.')
  
  while True:
  
      if client.get_connected() == False: 
          client.connect('192.168.5.2', 0, 1) #('IP-address', rack, slot)
          print('not connected')
          time.sleep(0.2)
      else:
          print('connected')
  </code></pre>