track connection progress (state) via a unique identifier Time to live in seconds for entries after a disconnect in the internal lookup table time to live in seconds (default: 30) Request methods to track ("POST") tracks the current request if the X-Progress-ID querystring key is supplied returns state information about the request tracked with the ID specified by the X-Progress-ID querystring parameter (optional) output format, one of "legacy", "json" or "jsonp". Defaults to "json". enable debug output false