---
title: April 2020 VCL release
summary: null
url: https://www.fastly.com/documentation/reference/changes/2020/04/vcl-changes
---

Today the minimum version of VCL available across our network increased, unlocking the following changes:

## New variables

- `client.geo.conn_type`
- `client.geo.proxy_type`
- `client.geo.proxy_description`
- `client.geo.region.utf8`
- `client.geo.region.ascii`
- `client.geo.region.latin1`
- `beresp.backend.src_ip`

## New functions

- `digest.hash_sha1_from_base64`
- `digest.hash_sha256_from_base64`
- `digest.hash_sha512_from_base64`
- `h2.disable_header_compression`
- `math.exp`
- `math.exp2`
- `math.log`
- `math.log2`
- `math.log10`
- `xml_escape`
- `std.dirname`
- `std.basename`
- `table.contains`
- `table.lookup_acl`
- `table.lookup_bool`
- `table.lookup_integer`
- `table.lookup_float`
- `table.lookup_ip`
- `table.lookup_backend`
- `table.lookup_rtime`

## Linting changes

We introduced new compiler warnings when we detect common mistakes in use of regular expressions:

- Unanchored file extension: `req.url ~ "\.html"` most likely should be `req.url ~ "\.html$"`
- Literal dots in file extensions and hostnames: `req.http.host ~ "example.com"` most likely should be `example\.com`

VCL containing expressions matching these patterns will still compile and deploy as before, but warnings will be returned both in the API and management web interface.