[Privoxy-users] rewriting the Host header, switching protocols

[Fabian Keil]

Madhu <enometh at meer.net> wrote on 2023-03-23 at 09:55:27:

> Hello, thanks for publishing privoxy. There are two strange scenarios
> that have cropped up (don't ask why)
> 
> 1.  To rewrite the Host: header of a forwarded request to a target
> webserver (based on certain criteria)

This is supported and can be done with a client-header filter:
https://www.privoxy.org/user-manual/actions-file.html#CLIENT-HEADER-FILTER

You can use tags or URL patterns to decide when to apply the filter.

> 2. To switch the protocol from HTTPS to HTTP when forwarding a request
> to another proxy (typically local, again based on certain criteria)

This can be done by rewriting the protocol in the URL
in the request line with a client-header filter.

Upgrading from HTTP to HTTPS is currently unsupported, though. 

Fabian
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