old_contents: try:
      import usocket as socket
  except:
      import socket
  
  
  CONTENT = b"""\
  HTTP/1.0 200 OK
  
  Hello #%d from MicroPython!
  """
  
  s = socket.socket()
  
  ai = socket.getaddrinfo("127.0.0.1", 8080)
  print("Bind address info:", ai)
  addr = ai[0][4]
  
  s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
  s.bind(addr)
  s.listen(5)
  print("Listening, connect your browser to http://127.0.0.1:8080/")
  
  counter = 0
  while True:
      res = s.accept()
      client_s = res[0]
      client_addr = res[1]
      print("Client address:", client_addr)
      print("Client socket:", client_s)
      print("Request:")
      if 0:
          # MicroPython socket objects support stream (aka file) interface
          # directly.
          print(client_s.read(4096))
          client_s.write(CONTENT % counter)
      else:
          print(client_s.recv(4096))
          client_s.send(CONTENT % counter)
      client_s.close()
      counter += 1
      print()
  
new_contents: try:
      import usocket as socket
  except:
      import socket
  
  
  CONTENT = b"""\
  HTTP/1.0 200 OK
  
  Hello #%d from MicroPython!
  """
  
  def main(use_stream=False):
      s = socket.socket()
  
      ai = socket.getaddrinfo("127.0.0.1", 8080)
      print("Bind address info:", ai)
      addr = ai[0][4]
  
      s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
      s.bind(addr)
      s.listen(5)
      print("Listening, connect your browser to http://127.0.0.1:8080/")
  
      counter = 0
      while True:
          res = s.accept()
          client_s = res[0]
          client_addr = res[1]
          print("Client address:", client_addr)
          print("Client socket:", client_s)
          print("Request:")
          if use_stream:
              # MicroPython socket objects support stream (aka file) interface
              # directly.
              print(client_s.read(4096))
              client_s.write(CONTENT % counter)
          else:
              print(client_s.recv(4096))
              client_s.send(CONTENT % counter)
          client_s.close()
          counter += 1
          print()
  
  
  main()
  
subject: Introduce main() function.