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Update req.hostname for X-Forwarded-Host changes

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Douglas Christopher Wilson
2019-05-16 11:29:22 -04:00
parent 18dfac1bbd
commit 4cfa31c0be
1 changed files with 13 additions and 3 deletions
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16
_includes/api/en/4x/req-hostname.md
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@@ -2,9 +2,19 @@
Contains the hostname derived from the `Host` HTTP header.
When the [`trust proxy` setting](/4x/api.html#trust.proxy.options.table) does not evaluate to `false`,
this property will instead have the value of the `X-Forwarded-Host` header field.
This header can be set by the client or by the proxy.
When the [`trust proxy` setting](/4x/api.html#trust.proxy.options.table)
does not evaluate to `false`, this property will instead get the value
from the `X-Forwarded-Host` header field. This header can be set by
the client or by the proxy.
If there is more than one `X-Forwarded-Host` header in the request, the
value of the first header is used. This includes a single header with
comma-separated values, in which the first value is used.
<div class="doc-box doc-info" markdown="1">
Prior to Express v4.17.0, the `X-Forwarded-Host` could not contain multiple
values or be present more than once.
</div>
```js
// Host: "example.com:3000"