- About the web interface controls
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Domains & Origins
Domains & Origins
- Changing origins based on user location
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- Enabling global POPs
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- Maintaining separate HTTP and HTTPS requests to origin servers
- Routing assets to different origins
- Setting up redundant origin servers
- Specifying an override host
- Using Fastly with apex domains
- Accept-Language header VCL features
- Authenticating before returning a request
- Basic authentication
- Creating location-based tagging
- Custom responses that don't hit origin servers
- Delivering different content to different devices
- Enabling URL token validation
- Guide to VCL
- Isolating header values without regular expressions
- Manipulating the cache key
- IP geolocation variables: Migrating to the new dataset
- Overriding which IP address the geolocation features use
- Response Cookie handling
- Support for the Edge-Control header
- Understanding the different PASS action behaviors
- Using edge side includes (ESI)
- VCL regular expression cheat sheet
Access Control Lists
Monitoring and testing
- Domain validation for TLS certificates
- Enabling HSTS through Fastly
- Forcing a TLS redirect
- Managing domains on TLS certificates
- Serving HTTPS traffic using certificates you manage
- Serving HTTPS traffic using Fastly-managed certificates
- Setting up free TLS
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- TLS termination
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- Log streaming: Sumo Logic
- Log streaming: Syslog
User access and control
Creating location-based tagging
Last updated August 09, 2018
You can set custom HTTP headers in your varnish configuration (VCL) based on the variables we expose. Use the geolocation features we have built into Varnish to create location-based tagging. We provide a list of geographic information based on a client's IP address. For a complete list of available geolocation variables, read about which geolocation features are accessible via VCL.
In the example below, an HTTP header Fastly-GeoIP-CountryCode is created with the two letter country code of the client's IP address using VCL Snippets.
- Log in to the Fastly web interface and click the Configure link.
- From the service menu, select the appropriate service.
- Click the Edit configuration button and then select Clone active. The Domains page appears.
- Click the VCL Snippets link. The VCL Snippets page appears.
Click Create Snippet. The Create a VCL snippet page appears.
- In the Name field, type an appropriate name (e.g., GeoLocation Header).
- From the Type controls, select within subroutine.
- From the Select subroutine menu, select recv (vcl_recv).
In the VCL field, add the following condition:
set req.http.Fastly-GeoIP-CountryCode = client.geo.country_code;
- Click Create to create the snippet.
- Click the Activate button to deploy your configuration changes.