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Other cases! This is not an exhaustive list, but if you encounter a case that's not listed here, you'll know: things will break on or it won't quite behave like your production site. In this case, Chrome, Edge, Safari, and Firefox by default do not consider mysite.example to be secure, even though it's a local site. Typically, this means you've overridden your local hosts file: Editing a hosts file to add a custom hostname. You're not using localhost, but a custom host name for local development, for example mysite.example. You need to locally test third-party libraries or APIs that require HTTPS (for example OAuth). Insecure HTTP/2 or newer is not supported, not even on localhost. For example, if you need to test loading performance on HTTP/2 or newer. You need to locally test or reproduce a behaviour specific to HTTP/2 or newer. You need to debug locally an issue that only occurs on an HTTPS website but not on an HTTP site, not even such as a mixed-content issue. When it comes to setting Secure cookies locally, not all browsers behave in the same way! For example, Chrome and Safari don't set Secure cookies on localhost, but Firefox does. And because SameSite:none and _Host also require the cookie to be Secure, setting such cookies on your local development site requires HTTPS as well.
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Secure cookies are set only on HTTPS, but not on for all browsers. You need to set a cookie locally that is Secure, or SameSite:none, or has the _Host prefix. You may encounter special cases where doesn't behave like an HTTPS site-or you may simply want to use a custom site name that's not You need to use HTTPS for local development in the following cases: When to use HTTPS for local development # On Service Workers, Sensor APIs, Authentication APIs, Payments, and other features that require certain security guarantees are supported and behave exactly like on an HTTPS site. Use by default #īrowsers treat in a special way: although it's HTTP, it mostly behaves like an HTTPS site. If your production website doesn't use HTTPS, make it a priority. Using a custom hostname When to use HTTPS for local development. Using third-party libraries or APIs that require HTTPS Setting Secure cookies in a consistent way across browsers However, in the following cases, you'll need HTTPS for local development:
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Service Workers, Web Authentication API, and more will work. Also, to keep things simple, the port number isn't specified. In this post, statements about localhost are valid for 127.0.0.1 and as well, since they both describe the local computer address, also called "loopback address".
#To secure undistracted dev how to#
When to use HTTPS for local developmentĪlso see: How to use HTTPS for local development.Why your development site should behave securely.