text: MAX_SIZE = 1024 * 4
  DEFAULT_ENCODE = 'utf-8'
  
  
  class HeaderKey:
      CONTENT_TYPE = 'Content-Type'
      CONTENT_LENGTH = 'Content-Length'
  
  
  class ContentType:
      JSON = 'application/json'
      HTML = 'text/html'
  
  
  class ContentTypeCharset:
      UTF8_CHARSET = f';charset={DEFAULT_ENCODE}'
      JSON = ContentType.JSON + UTF8_CHARSET
      HTML = ContentType.HTML + UTF8_CHARSET
  