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GnuPG does not provide Host: header for proxy requests
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When requesting a key through a proxy, GnuPG (common/http.c line 1651) does not provide
a Host: header with the request. This missing header causes some keyservers (e.g. to return a 400 Bad Request instead of the key. Issuing the same
request without a proxy does provide a Host: header (common/http.c line 1671) and the
request is satisfied.

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This report was for which version of GnuPG?

Please tell us the OS version and the GnuPG version.

This is no longer an issue with gnupg master:

% socat - tcp-listen:11371
GET /pks/lookup?op=index&options=mr&search=foobr HTTP/1.0
Host: localhost:11371
Connection: close
Via: 1.0 tinyproxy (tinyproxy/1.8.3)
Pragma: no-cache
Cache-Control: no-cache

Feel free to reopen with more specific information.

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