var fs = require('fs'), http = require('http'); 
http.createServer(function (req, res){ 
fs.readFile("./schemas/v2.0" + _AN_Read_url("url", req), function (err, data){ 
if (err) { 
res.writeHead(404); 
res.end(JSON.stringify(err)); 
return ; 
} 
res.writeHead(200); 
res.end(data); 
} 
); 
} 
).listen(8000);