title: Repeating/Continuous python server and client
body: <p>I'd like to set up a system where I have a python client and server continuously sending / receiving data.  All of the code examples I've found show how to send a single message to a socket, but not how to continuously be set up for sending/receiving data.</p>
  
  <p>Right now my code is:</p>
  
  <p>client.py</p>
  
  <pre><code>import socket
  import time
  
  while True:
      try:
          client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
          client_socket.connect(("192.168.0.250", 10220))
          data = "GET\nSONAR\n\n"
          print 'send to server: ' + data
          client_socket.send(data)
          client_socket.close()
      except Exception as msg:
          print msg
  </code></pre>
  
  <p>I'd like the code to be able to send commands multiple times a minute, but right now it doesn't seem to consistently send messages out, and i'm not sure why.  Why isn't the control stream continuous?</p>
  
  <p>server.py</p>
  
  <pre><code>import socket
  
  host = '192.168.0.100'
  port = 8220
  address = (host, port)
  
  server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
  server_socket.bind((address))
  server_socket.listen(5)
  
  while True:
      try:
          print "Listening for client . . ."
          conn, address = server_socket.accept()
          print "Connected to client at ", address
          #pick a large output buffer size because i dont necessarily know how big the incoming packet is                                                                                              
          output = conn.recv(2048);
          if output:
              print "Message received from client:"
              print output
  
          #conn.send("This is a response from the server.")                                                                                                                                            
          conn.close()
          #print "Test message sent and connection closed." 
  </code></pre>
  
  <p>This works fine on the first try, but I can't have the server automatically listen again for the next message -- it always hangs on "Listening for client . . .".</p>
  
  <p>Any thoughts?</p>
  
  <p>thanks!</p>