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A new note added to NGiNX's recipes & tips article. This one tells about variables.

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Alexander Andreev 2021-11-15 03:28:08 +04:00
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homepage/views/articles/nginx_recipes_and_tips.pug
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@ -5,14 +5,15 @@ block article
h2 NGiNX's recipes & tips
div.menu
a(href='/stuff#articles') Go back to articles list
time(datetime='2020-12-04') 4 December 2020
time(datetime='2021-11-15') 15 November 2021
nav
h3 Contents
ol
li #[a(href='#art-1') Introduction]
li #[a(href='#art-2') Userdir functionality like Apache's mod_userdir]
li #[a(href='#art-3') Note on how NGiNX works with HTTP headers]
li #[a(href='#art-3') Tell a Tor visitor of your clearnet site that you have an onion]
li #[a(href='#art-4') Tell a Tor visitor of your clearnet site that you have an onion]
li #[a(href='#art-5') Variables]
h3#art-1 #[a(href='#art-1') 1. Introduction]
p Here I'll place recipes for implementing different functionalities and notes on webserver's behaviour.
@ -33,8 +34,24 @@ block article
p Let's say in #[code http] block you specified common headers like #[code X-Frame-Options], #[code X-XSS-Protection], and so on for all #[code server] directives to use. But, if you add some other header for a specific #[code server] or #[code location] block then all those headers would be dropped.
p For now the only cure for it is to place all that headers in a separate file like #[code common-headers.inc] and using #[code include] directive to include them in all the #[code server] and #[code location] blocks where additional headers are added.
h3#art-4 #[a(href='#art-3') 4. Tell a Tor visitor of your clearnet site that you have an onion]
h3#art-4 #[a(href='#art-4') 4. Tell a Tor visitor of your clearnet site that you have an onion]
p There is a custom HTTP header #[code Onion-Location] that is being recognised by Tor Browser and it will show a ".onion available" button in an address bar.
p The code for NGiNX is this simple:
pre
| add_header Onion-Location http://yoursite.onion$request_uri;
h3#art-5 #[a(href='#art-5') 5. Variables]
p Just wanna tell about this cool feature you can use to reduce code repetition. Alas, you can use them only in #[code server], #[code location] and #[code if] blocks. If only they could be declared in a #[code http] block, they'd be perfect. But still, they help a lot.
p I heavily use aliases pointing to directories within the same base directory.
p Judging from a little testing, variables doesn't decrease performance. Or I just don't notice it.
p Variables could only store strings. To demonstrate the usage I'll just post here a part of my config:
pre
| set $root /srv/http/dwelling;
| ...
| location =/favicon.ico {
| alias $root/shared/static/img/favicon.ico;
| }
| ...
| location /assets/ {
| alias $root/homepage/static/assets/;
| }