new_contents: #!/usr/bin/env python
  """
  UDP echo test
  """
  
  import argparse
  import socket
  
  def main():
      parser = argparse.ArgumentParser(description=__doc__.strip())
      parser.add_argument('host', help="Host")
      parser.add_argument('port', help="UDP port", nargs='?', type=int, default=1234)
      parser.add_argument('-n', help="Number of packets", type=int, default=1000)
  
      args = parser.parse_args()
      
      host = args.host
      port = args.port
      n = args.n
      
      sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
      sock.settimeout(0)
      
      sent = 0
      recv = 0
      
      data = b'testing'*100
      
      print(f"Sending {n} UDP packets to {host} on {port}...")
      
      while sent < n:
          try:
              sock.sendto(data, (host, port))
              sent += 1
          except BlockingIOError:
              pass
          
          try:
              ret = sock.recvfrom(1024)
              recv += 1
          except BlockingIOError:
              pass
  
      sock.settimeout(1)
      
      while True:
      
          try:
              ret = sock.recvfrom(1024)
              recv += 1
          except socket.timeout:
              break
      
      print(f"Sent {sent} packets")
      print(f"Received {recv} packets ({recv/sent*100}%)")
      print(f"Missed {sent-recv} packets ({(sent-recv)/sent*100}%)")
  
  
  if __name__ == "__main__":
      main()
  
subject: Add UDP test script