sipcloak

var sip = require('sip');
var digest = require('sip/digest');
var util = require('util');
var dns = require('dns');

var registry = {};

sip.start({}, function(rq) {
  try {
    if(rq.method === 'INVITE') {
      var username = sip.parseUri(rq.uri).user;
      var domain = sip.parseUri(rq.uri).host;       
      dns.resolveTxt('sip-'+username+'.'+domain, function (err, addresses) {
      if (err) throw err;

      addresses.every(function (a) {
       
      var rs = sip.makeResponse(rq, 302, 'Moved Temporarily');
      rs.headers = rq.headers;  
      rs.headers.contact = 'sip:'+a;  
      rs.content = rq.content;  
      sip.send(rs);
      if (err) {
        throw err;
      }
      return false;

    });
  });
}
      
    else {
      sip.send(sip.makeResponse(rq, 405, 'Method Not Allowed'));
    }
  } catch(e) {
    util.debug(e);
    util.debug(e.stack);

    sip.send(sip.makeResponse(rq, 500, "Server Internal Error"));
  }
});