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Preserve host in example apache config (#9696)

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Fixes redirect loop

Signed-off-by: Paul Tötterman <paul.totterman@iki.fi>
This commit is contained in:
Paul Tötterman 2021-03-26 12:38:31 +02:00 committed by GitHub
parent d4c4798a25
commit d7d4232a2d
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2 changed files with 11 additions and 5 deletions
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9
UPGRADE.rst
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@ -98,9 +98,12 @@ will log a warning on each received request.
To avoid the warning, administrators using a reverse proxy should ensure that
the reverse proxy sets `X-Forwarded-Proto` header to `https` or `http` to
indicate the protocol used by the client. See the `reverse proxy documentation
<docs/reverse_proxy.md>`_, where the example configurations have been updated to
show how to set this header.
indicate the protocol used by the client.
Synapse also requires the `Host` header to be preserved.
See the `reverse proxy documentation <docs/reverse_proxy.md>`_, where the
example configurations have been updated to show how to set these headers.
(Users of `Caddy <https://caddyserver.com/>`_ are unaffected, since we believe it
sets `X-Forwarded-Proto` by default.)

7
docs/reverse_proxy.md
View file

@ -104,10 +104,11 @@ example.com:8448 {
```
<VirtualHost *:443>
SSLEngine on
ServerName matrix.example.com;
ServerName matrix.example.com
RequestHeader set "X-Forwarded-Proto" expr=%{REQUEST_SCHEME}
AllowEncodedSlashes NoDecode
ProxyPreserveHost on
ProxyPass /_matrix http://127.0.0.1:8008/_matrix nocanon
ProxyPassReverse /_matrix http://127.0.0.1:8008/_matrix
ProxyPass /_synapse/client http://127.0.0.1:8008/_synapse/client nocanon
@ -116,7 +117,7 @@ example.com:8448 {
<VirtualHost *:8448>
SSLEngine on
ServerName example.com;
ServerName example.com
RequestHeader set "X-Forwarded-Proto" expr=%{REQUEST_SCHEME}
AllowEncodedSlashes NoDecode
@ -135,6 +136,8 @@ example.com:8448 {
</IfModule>
```
**NOTE 3**: Missing `ProxyPreserveHost on` can lead to a redirect loop.
### HAProxy
```