[11u] RFR: JDK-8222527: HttpClient doesn't send HOST header when tunelling HTTP/1.1 through http proxy

[Daniel Fuchs]

Hi Andrew,

The proposed changes look reasonable to me.

best regards,

-- daniel

On 26/11/2020 18:10, Andrew Hughes wrote:
> Bug: https://bugs.openjdk.java.net/browse/JDK-8222527
> Webrev: https://cr.openjdk.java.net/~andrew/openjdk11/8222527/webrev.01/
> 
> When connecting to a proxy, OpenJDK filters out all but the Proxy-*
> HTTP headers. This violates the HTTP specification which states that
> the Host header should always be sent.
> 
> This patch includes the Host header in the proxy filter exemptions.
> This backport is simpler than the original included in 13u, as 11u
> does not include JDK-8213189, which allows the user to customise
> headers. As such, we only need to alter the proxy filter and not
> worry about the set of restricted headers being altered by the
> jdk.httpclient.allowRestrictedHeaders property.
> 
> The included test fails on current 11u and passes with this patch.
> 
> Thanks,
> --
> Andrew :)
> 
> Senior Free Java Software Engineer
> OpenJDK Package Owner
> Red Hat, Inc. (http://www.redhat.com)
> 
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