879ace1434
This reverts the changes to Error from CL 571995, and adds a GODEBUG controlling the changes to ServeContent/ServeFile/ServeFS. The change to remove the Content-Encoding header when serving an error breaks middleware which sets Content-Encoding: gzip and wraps a ResponseWriter in one which compresses the response body. This middleware already breaks when ServeContent handles a Range request. Correct uses of ServeContent which serve pre-compressed content with a Content-Encoding: gzip header break if we don't remove that header when serving errors. Therefore, we keep the change to ServeContent/ ServeFile/ServeFS, but we add the ability to disable the new behavior by setting GODEBUG=httpservecontentkeepheaders=1. We revert the change to Error, because users who don't want to include a Content-Encoding header in errors can simply remove the header themselves, or not add it in the first place. Fixes #66343 Change-Id: Ic19a24b73624a5ac1a258ed7a8fe7d9bf86c6a38 Reviewed-on: https://go-review.googlesource.com/c/go/+/593157 Reviewed-by: Russ Cox <rsc@golang.org> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> |
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README.md
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