Is it possible to implement such a scenario?

Question

Node.js

Now I use IAS to host ten simple landing sites that differ only in domain names and six variables (counter number, Yandex validation string, and Google form parameters). Variables are placed in a file server/request.js, from which values ​​are substituted into templates.
Thus, there are ten subdirectories in applicationsand it all works, only making changes to all these sites is a bit inconvenient.
Is it possible to use only one application, bind all ten domain names to it, and substitute variables into the template depending on the requested domain name?

Answer 1

There is nothing complicated about this, I just recommend moving the variables, or rather, they are constants to /init/constants.js , otherwise they are created and lost on /server/requests.js every time. For example like this:

application.constants = {
  'domain1.com': { field1: "value1", ... }
  'domain2.net': { field1: "value1", ... },
    ...
};

And in /server/requests.js they can simply be returned depending on the site domain:

module.exports = function(client, callback) {
  client.cache('10m');  // кешируем на 10 минут
  // отдаем нужный набр переменных для сайта
  callback(application.constants[client.host]);
};

Well, in /config/hosts.js we configure everything for one application:
module.exports = [ '*' ];

Answer 2

Thanks, it worked.
True, it worked partially.
First, with caching enabled, the second request breaks everything with the following output:

2015-07-10T11:43:36.864Z
Master(5932/C1N0)
TypeError: undefined is not a function
  Client.sendCache (impress.client.js:602:62)
  Client.processing (impress.client.js:375:62)
  impress.client.js:261:16
  Client.detectRealPath (impress.client.js:712:91)
  impress.client.js:260:14
  Client.restoreSession (impress.client.js:339:17)
  Client.dispatch (impress.client.js:259:12)
  impress.application.js:487:21
  Client.static (impress.client.js:821:28)
  EventEmitter.application.dispatch (impress.application.js:460:18)
  Server.impress.dispatcher (impress.js:691:26)
  Server.emit (events.js:110:17)
  HTTPParser.parserOnIncoming [as onIncoming] (_http_server.js:491:12)
  HTTPParser.parserOnHeadersComplete (_http_common.js:111:23)
  Socket.socketOnData (_http_server.js:343:22)
  Socket.emit (events.js:107:17)
  readableAddChunk (_stream_readable.js:163:16)
  Socket.Readable.push (_stream_readable.js:126:10)
  TCP.onread (net.js:538:20)
Impress shutting down

Without caching, it works as it should, but I just don’t know what to do with requests for www.domain.ru. Of course, you can duplicate an object with an 'domain.ru'object 'www.domain.ru'in init/constants.js(and it works), but something tells me that this is not a very beautiful solution.