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    <p>Vadim was <a href="https://stackoverflow.com/questions/11960705/expressjs-server-how-to-handle-multiple-domains#comment15940267_11960962">almost onto the right idea</a>. You can configure how to respond to each domain with the <a href="http://www.senchalabs.org/connect/vhost.html" rel="noreferrer"><code>vhost</code> middleware</a>:</p> <pre><code>// `baz.com` var app = express.createServer(); app.get( '/', routes.index ); // ... express.createServer() .use( express.vhost( 'foo.com', express.static( '/var/www/foo' ) ) ) .use( express.vhost( 'bar.net', express.static( '/var/www/bar' ) ) ) .use( express.vhost( 'baz.com', app ) ) .use( function( req, res ) { res.send('Sorry, I do not know how to handle that domain.'); }) .listen( ... ); </code></pre> <p><code>routes.index</code> can then be simplified to handle only <code>baz.com</code> requests:</p> <pre><code>exports.index = function( req, res ) { // ... lines ... res.render( 'index', { title: 'Baz Title example' } ); }; </code></pre> <p><strong>Edit</strong></p> <p>As for comparisons:</p> <p>The <code>switch</code> would effectively be done first and would determine how to handle all requests based on the <code>host</code> -- similar to:</p> <pre><code>express.createServer().use(function( req, res, next ) { switch( req.host ) { case 'foo.com': express.static( '/var/www/foo' )( req, res, next ); break; case 'bar.net': express.static( '/var/www/bar' )( req, res, next ); break; case 'baz.com': app.handle( req, res, next ); break; default: res.send( ... ); } }).listen( ... ); </code></pre> <p>It allows you to set the stack on start so any middleware is available immediately:</p> <pre><code>server.stack = [ express.vhost( 'foo.com', ... ), express.vhost( 'bar.net', ... ), express.vhost( 'baz.com', ... ), [Function] ]; </code></pre> <p>These also reflect the 2 possible sources of issues you might have:</p> <p><strong>Same stack without filters</strong></p> <p>Each <code>Application</code> only has 1 middleware stack, which all of the middleware you're using is being added directly to with <code>app.use(...)</code>. Despite adding some under conditions, you're still getting:</p> <pre><code>app.stack = [ // ..., app.router, express.static( '/var/www/foo' ), express.static( '/var/www/bar' ) ]; </code></pre> <p>And the condition won't change how the <code>static</code> middlewares respond -- which is by <code>req.path</code>, not <code>req.host</code> -- only when they're in the stack to start responding.</p> <p><strong>State of the stack</strong></p> <p>And, if the <code>static</code> middlewares aren't added until <em>after</em> another request has been made, then I take it they aren't available immediately:</p> <pre><code>// GET http://foo.com/file 404 app.stack = [ app.router ] // GET http://foo.com/ 200 app.stack = [ app.router, express.static( '/var/www/foo' ) ] // GET http://foo.com/file 200 app.stack = [ app.router, express.static( '/var/www/foo' ) ] </code></pre> <p>This may also mean the same <code>static</code> middleware could be added to the stack multiple times:</p> <pre><code>// 3x GET http://foo.com/ app.stack = [ app.router, express.static( '/var/www/foo' ), express.static( '/var/www/foo' ), express.static( '/var/www/foo' ) ] </code></pre> <p>And having their addition depend on other requests also suggests a possible race conditions:</p> <pre><code>// was `foo.com` or `bar.net` first? app.stack = [ app.router, express.static( ? ), express.static( ? ) ] </code></pre>
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    1. POExpressJS Server - How to handle multiple domains
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    1. USJonathan Lonowski
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    1. COit looks like it does essentially the same as I do manually there ? Or is there any more magic behind.
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    2. CO@jAndy It would ensure the `static` middlewares are bound immediately and would only respond to the listed domain. I could be very wrong... But, I think as you have it, you can't request `http://foo.com/file` before requesting `http://foo.com/`. And, I don't think the middlewares retain the domain association they're being bound under, so `http://bar.net/file` may be responding as `http://foo.com/file` if you visit `http://foo.com/` first.
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    3. COI don't think I'm understanding your comment. A middleware doesn't have to retain domain association, simply because each request contains the domain name. Requesting `http://foo.com` will correctly result in `Host: foo.com`, and successively requesting `http://bar.net/file` will result in `Host: bar.net`.
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