Boris Pocatko BorisPocatko

Nginx TLS SNI routing, based on subdomain pattern

Nginx can be configured to route to a backend, based on the server's domain name, which is included in the SSL/TLS handshake (Server Name Indication, SNI).
This works for http upstream servers, but also for other protocols, that can be secured with TLS.

prerequisites

at least nginx 1.15.9 to use variables in ssl_certificate and ssl_certificate_key.
check nginx -V for the following:
```
...
TLS SNI support enabled
```

	# Change YOUR_TOKEN to your prerender token and uncomment that line if you want to cache urls and view crawl stats
	# Change http://example.com (at the end of the last RewriteRule) to your website url

	<IfModule mod_headers.c>
	RequestHeader set X-Prerender-Token "YOUR_TOKEN"
	</IfModule>

	<IfModule mod_rewrite.c>
	RewriteEngine On