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79 lines
2.6 KiB
Markdown
79 lines
2.6 KiB
Markdown
---
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title: "HTTP/2 Server Push in Hugo"
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date: 2017-07-24T18:36:00+02:00
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description: >
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As every page in Hugo can be output to multiple formats, it is easy to create Netlify's _redirects and _headers files on the fly.
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categories: [blog]
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keywords: []
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slug: "http2-server-push-in-hugo"
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aliases: []
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author: bep
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images:
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- images/gohugoio-card-1.png
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---
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**Netlify** recently announced support for [HTTP/2 server push](https://www.netlify.com/blog/2017/07/18/http/2-server-push-on-netlify/), and we have now added it to the **gohugo.io** sites for the main `CSS` and `JS` bundles, along with server-side 301 redirect support.
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If you navigate to https://gohugo.io and look in the Chrome developer network console, you should now see `Push` as the new source ("Initiator") for the `CSS` and `JSS`:
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{{< figure src="/images/blog/hugo-http2-push.png" caption="Network log for https://gohugo.io" >}}
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**Setting up this in Hugo was easy:**
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## 1. Configure Netlify Output Formats
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Add a new custom media type and two new output formats to `config.toml`. For more on output formats in Hugo, see [Custom Output Formats](/templates/output-formats/).
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```bash
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[outputs]
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home = [ "HTML", "RSS", "REDIR", "HEADERS" ]
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[mediaTypes]
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[mediaTypes."text/netlify"]
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suffix = ""
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delimiter = ""
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[outputFormats]
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[outputFormats.REDIR]
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mediatype = "text/netlify"
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baseName = "_redirects"
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isPlainText = true
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notAlternative = true
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[outputFormats.HEADERS]
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mediatype = "text/netlify"
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baseName = "_headers"
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isPlainText = true
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notAlternative = true
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```
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## 2. Add Template For the _headers File
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Add `layouts/index.headers`:
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```bash
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/*
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X-Frame-Options: DENY
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X-XSS-Protection: 1; mode=block
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X-Content-Type-Options: nosniff
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Referrer-Policy: origin-when-cross-origin
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*/
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Link: <{{ "dist/app.bundle.js" | relURL }}>; rel=preload; as=script
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Link: <{{ "dist/main.css" | relURL }}>; rel=preload; as=style
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```
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The template above creates both a security header definition and a HTTP/2 server push configuration.
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Also note that this is a template for the home page, so the full `Page` with its `Site` and many variables are available. You can also use `partial` to include other templates.
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## 3. Add Template For the _redirects File
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Add `layouts/index.redir`:
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```bash
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# Netlify redirects. See https://www.netlify.com/docs/redirects/
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{{ range $p := .Site.Pages -}}
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{{ range .Aliases }}
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{{ . | printf "%-35s" }} {{ $p.RelPermalink -}}
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{{ end -}}
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{{- end -}}
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```
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The template above creates 301 redirects for your [aliases](/content-management/urls/#aliases), so you will probably want to turn off aliases in your `config.toml`: `disableAliases = true`.
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