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Mention escaping escape characters in YAML for regex usage

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Jack Morgan 2021-10-06 22:36:11 +13:00 committed by GitHub
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5 changed files with 24 additions and 10 deletions
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6
docs/content/middlewares/http/forwardauth.md
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@ -284,6 +284,12 @@ http:
authResponseHeadersRegex = "^X-"
```
!!! tip
Regular expressions and replacements can be tested using online tools such as [Go Playground](https://play.golang.org/p/mWU9p-wk2ru) or the [Regex101](https://regex101.com/r/58sIgx/2).
When defining a regular expression within YAML, any escaped character needs to be escaped twice: `example\.com` needs to be written as `example\\.com`.
### `authRequestHeaders`
The `authRequestHeaders` option is the list of the headers to copy from the request to the authentication server.

4
docs/content/middlewares/http/headers.md
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@ -333,7 +333,9 @@ It allows all origins that contain any match of a regular expression in the `acc
!!! tip
Regular expressions can be tested using online tools such as [Go Playground](https://play.golang.org/p/mWU9p-wk2ru) or the [Regex101](https://regex101.com/r/58sIgx/2).
Regular expressions and replacements can be tested using online tools such as [Go Playground](https://play.golang.org/p/mWU9p-wk2ru) or the [Regex101](https://regex101.com/r/58sIgx/2).
When defining a regular expression within YAML, any escaped character needs to be escaped twice: `example\.com` needs to be written as `example\\.com`.
### `accessControlExposeHeaders`

10
docs/content/middlewares/http/redirectregex.md
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@ -73,10 +73,6 @@ http:
## Configuration Options
!!! tip
Regular expressions and replacements can be tested using online tools such as [Go Playground](https://play.golang.org/p/mWU9p-wk2ru) or the [Regex101](https://regex101.com/r/58sIgx/2).
### `permanent`
Set the `permanent` option to `true` to apply a permanent redirection.
@ -85,6 +81,12 @@ Set the `permanent` option to `true` to apply a permanent redirection.
The `regex` option is the regular expression to match and capture elements from the request URL.
!!! tip
Regular expressions and replacements can be tested using online tools such as [Go Playground](https://play.golang.org/p/mWU9p-wk2ru) or the [Regex101](https://regex101.com/r/58sIgx/2).
When defining a regular expression within YAML, any escaped character needs to be escaped twice: `example\.com` needs to be written as `example\\.com`.
### `replacement`
The `replacement` option defines how to modify the URL to have the new target URL.

4
docs/content/middlewares/http/replacepathregex.md
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@ -79,7 +79,9 @@ The ReplacePathRegex middleware will:
!!! tip
Regular expressions and replacements can be tested using online tools such as [Go Playground](https://play.golang.org/p/mWU9p-wk2ru) or [Regex101](https://regex101.com/r/58sIgx/2).
Regular expressions and replacements can be tested using online tools such as [Go Playground](https://play.golang.org/p/mWU9p-wk2ru) or the [Regex101](https://regex101.com/r/58sIgx/2).
When defining a regular expression within YAML, any escaped character needs to be escaped twice: `example\.com` needs to be written as `example\\.com`.
### `regex`

10
docs/content/middlewares/http/stripprefixregex.md
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@ -67,11 +67,13 @@ The StripPrefixRegex middleware strips the matching path prefix and stores it in
The `regex` option is the regular expression to match the path prefix from the request URL.
!!! tip
Regular expressions can be tested using online tools such as [Go Playground](https://play.golang.org/p/mWU9p-wk2ru) or the [Regex101](https://regex101.com/r/58sIgx/2).
For instance, `/products` also matches `/products/shoes` and `/products/shirts`.
If your backend is serving assets (e.g., images or JavaScript files), it can use the `X-Forwarded-Prefix` header to properly construct relative URLs.
Using the previous example, the backend should return `/products/shoes/image.png` (and not `/images.png`, which Traefik would likely not be able to associate with the same backend).
!!! tip
Regular expressions and replacements can be tested using online tools such as [Go Playground](https://play.golang.org/p/mWU9p-wk2ru) or the [Regex101](https://regex101.com/r/58sIgx/2).
When defining a regular expression within YAML, any escaped character needs to be escaped twice: `example\.com` needs to be written as `example\\.com`.