RFR: 8349670: HttpServer: sending interim responses fails after JDK-7026262 [v10]

[Josiah Noel]

On Thu, 9 Oct 2025 09:23:59 GMT, Daniel Fuchs <dfuchs at openjdk.org> wrote:

> Hi guys, I would prefer if we handled any changes to the 100 - continue behaviour in a separate fix. That would be easier to review and to discuss options. So I'd suggest to revert [4b00588](https://github.com/openjdk/jdk/pull/27069/commits/4b0058886cf10b1703426acc4131453c46636645) in this PR and possibly discuss that in a followup.

I can remove, but if we can neither manually send 100-continue to resolve the issue described by @Michael-Mc-Mahon, or 101-switching protocols as I originally wanted, what exactly does this PR accomplish? 

The only other 1xx http code is 103, which as we know is recommended for use only with http2 (that I can't use because I can't send 101 properly to upgrade the connection)

So effectively there are no interim responses to send with this PR.

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PR Comment: https://git.openjdk.org/jdk/pull/27069#issuecomment-3385903211