[stable2409] Backport #6454 #6458
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![paritytech-cmd-bot-polkadot-sdk[bot]](https://avatars.githubusercontent.com/in/975620?s=60&v=4){kind=small}
This PR fixes an issue that I discovered using connecting to the RPC via
localhost using cURL, where cURL tries to connect to via ipv6 before
ipv4 when querying `localhost` which messed up the http host filter
whereas it would connect to the address `[::1]::9944 host_header:
localhost:9944` but the ipv6 interface only whitelisted `[::1]:9944`
which this fixes.
So let's whitelist all localhost interfaces to avoid such weird
edge-cases.
### Behavior before this PR
```bash
$ polkadot --chain westend-dev &
$ curl -v \
-H 'Content-Type: application/json' \
-d '{"jsonrpc":"2.0","id":"id","method":"system_name"}' \
http://localhost:9944
* Host localhost:9944 was resolved.
* IPv6: ::1
* IPv4: 127.0.0.1
* Trying [::1]:9944...
* Connected to localhost (::1) port 9944
> POST / HTTP/1.1
> Host: localhost:9944
> User-Agent: curl/8.5.0
> Accept: */*
> Content-Type: application/json
> Content-Length: 50
>
< HTTP/1.1 403 Forbidden
< content-type: text/plain
< content-length: 41
< date: Tue, 12 Nov 2024 13:03:49 GMT
<
Provided Host header is not whitelisted.
* Connection #0 to host localhost left intact
```
### Behavior after this PR
```bash
$ polkadot --chain westend-dev &
➜ wasm-tests (update-artifacts-1731284930) ✗ curl -v \
-H 'Content-Type: application/json' \
-d '{"jsonrpc":"2.0","id":"id","method":"system_name"}' \
http://localhost:9944
* Host localhost:9944 was resolved.
* IPv6: ::1
* IPv4: 127.0.0.1
* Trying [::1]:9944...
* Connected to localhost (::1) port 9944
> POST / HTTP/1.1
> Host: localhost:9944
> User-Agent: curl/8.5.0
> Accept: */*
> Content-Type: application/json
> Content-Length: 50
>
< HTTP/1.1 200 OK
< content-type: application/json; charset=utf-8
< vary: origin, access-control-request-method, access-control-request-headers
< content-length: 54
< date: Tue, 12 Nov 2024 13:02:57 GMT
<
* Connection #0 to host localhost left intact
{"jsonrpc":"2.0","id":"id","result":"Parity Polkadot"}%
```
---------
Co-authored-by: GitHub Action <action@github.com>
Co-authored-by: command-bot <>
(cherry picked from commit 0a0af0e)
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niklasad1
approved these changes
Nov 12, 2024
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Backport #6454 into
stable2409from niklasad1.See the documentation on how to use this bot.