old_contents: 
  import time
  import threading
  import socket
  
  
  class NetworkFeeder:
      """
      A class that feeds data to a socket port
      """
  
      def __init__(self, proto, host, port, data, is_client=True, delay=3, timeout=2):
  
          if not is_client:
              raise NotImplementedError("Server mode is not implemented.")
  
          if proto != "tcp":
              raise NotImplementedError("Only TCP mode is supported for now.")
  
          self._proto = proto
          self._is_client = is_client
          self._delay = delay
          self._data = data
          self._host = host
          self._port = port
          self._timeout = timeout
  
          t = threading.Thread(target=self.worker)
          t.start()
  
      def worker(self):
          if self._delay:
              time.sleep(self._delay)
  
          sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM if self._proto == "tcp" else socket.SOCK_DGRAM)
          sock.settimeout(self._timeout)
          sock.connect((self._host, self._port))
  
          sock.send(self._data)
  
          sock.close()
  
new_contents: 
  import time
  import threading
  import socket
  
  
  class NetworkFeeder:
      """
      A class that feeds data to a socket port
      """
  
      def __init__(self, proto, host, port, data, is_client=True, delay=5, timeout=2):
  
          if not is_client:
              raise NotImplementedError("Server mode is not implemented.")
  
          if proto != "tcp":
              raise NotImplementedError("Only TCP mode is supported for now.")
  
          self._proto = proto
          self._is_client = is_client
          self._delay = delay
          self._data = data
          self._host = host
          self._port = port
          self._timeout = timeout
  
          t = threading.Thread(target=self.worker)
          t.start()
  
      def worker(self):
          if self._delay:
              time.sleep(self._delay)
  
          sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM if self._proto == "tcp" else socket.SOCK_DGRAM)
          sock.settimeout(self._timeout)
          sock.connect((self._host, self._port))
  
          sock.send(self._data)
  
          sock.close()
  
subject: Set default delay to 5 seconds (because of my slow laptop).