Cross Domain post Javascript

Question

So i'm trying to make a webpage, that launches local applications through a client.

The simplist solution I can think of is just posting or getting data to the port I want to use; say port 3000. Unfortuantely I've run into an error: XMLHttpRequest cannot load %3127.0.0.1:3000. Cross origin requests are only supported for HTTP.

My Question: Is there a way to post or get data to 127.0.0.1:3000 using XMLHttpRequest()?

sorry about the formatting mess, I played around with it for a long time and I couldn't get it to indent correctly D:

function Post_Command(Command_String){ if(typeof(Command_String) != "string"){ console.log( "Invalid Call:\Post_Command(\n\t"+Command_String+":"+typeof(Command_String)+"\n)" ); } else { xmlhttp=new XMLHttpRequest(); xmlhttp.onreadystatechange=function(){ if (xmlhttp.readyState==4 && xmlhttp.status==200){ console.log(xmlhttp.responseText); } } xmlhttp.open( "POST", "127.0.0.1:3000", true ); xmlhttp.send(Command_String); } }

Quentin · Accepted Answer · 2012-05-14 15:44:30Z

Yes, with provisos. Your first problem is that you have to use HTTP or HTTPS. You need a scheme on your URI (or you need to start it with // to maintain the current scheme, which is unwise if you are hitting a specific port).

"127.0.0.1:3000" --> "http://127.0.0.1:3000"

The server running on port 3000 needs to give permission to the site using CORS. The user must also be equipped with a browser that supports CORS.

That may be what i'm looking for. It also won't be a browser that's recieveing the data, it's just a client appliaction that will parse what it recieves. I'll be writing that as well.

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