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node.jshostlisten

Listen to multiple hosts with http server on node.js

According to the docs, creating a server can optionally listen to a specific host:

server.listen(port, [host], [backlog], [callback])

Begin accepting connections on the specified port and host. If the host is omitted, the server will accept connections directed to any IPv4 address (INADDR_ANY).

So you can listen to a single host, or to any host.

Is there a way to listen to a few specific hosts?

Solution

  • To do this, you must add additional HTTP servers. However, you can use the same callback for each.

    If you are using Express, this is as simple as an additional call to app.listen().