The url is inside the get call. Not the host part of the header.
You want to 'get' calll the page, you're calling the 192.168... at the root level of the server, not the relay page.
Secondly, your context point var is not used to correlate to being on or off. Since the point is an alphanumeric and not a numeric/binary, your parameters should be:
var parameters = {
"turn": info
}
You're calling a script but I think you are unaware of how everything works. I take it it has been a long time since you've done this.