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I'm looking to add custom http headers to a Ruby on Rails app that is currently hosted on Heroku.
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HTTP headers let the client and the server pass additional information with an HTTP request or response. An HTTP header consists of its case-insensitive name followed by a colon ( : ), then by its value. Whitespace before the value is ignored.
Custom Headers are for troubleshooting, informational purposes, and specific server-side logic. For example, to send a GET request with a custom header name, you can use the "X-Real-IP" header, which defines the client's IP address. For a load balancer service, "client" is the last remote host.
Use:
response.headers['HEADER NAME'] = 'HEADER VALUE' either in a specific method or to a before_filter method of your application controller depending on whether you need this to be added in a specific or to all of your responses.
As noted by @BrentMatzelle in the comments, for Rails 5:
response.set_header('HEADER NAME', 'HEADER VALUE') If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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