text: import http.client
  
  conn = http.client.HTTPConnection("mockbin.com")
  
  payload = "{\"foo\":null}"
  
  headers = { 'content-type': "application/json" }
  
  conn.request("POST", "/har", payload, headers)
  
  res = conn.getresponse()
  data = res.read()
  
  print(data.decode("utf-8"))
  