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

[Daniel Fuchs]

On Thu, 9 Oct 2025 04:02:41 GMT, Josiah Noel <duke at openjdk.org> wrote:

>> Following the guideline of the last comment on [JDK-8349670](https://bugs.openjdk.org/browse/JDK-8349670?focusedId=14794649&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14794649), resolves the issue where sending a 1xx status code would close the input stream, preventing the server from reading the body. 
>> 
>> - When a 1xx status code is sent by `sendResponseHeaders`, the input/output streams will not be closed prematurely.
>> - sentHeaders will not be set to true when sending 1xx status codes
>> - 100-continue will be sent automatically when trying to read the inputstream if `Expect: 100-continue` header is present
>
> Josiah Noel has updated the pull request incrementally with one additional commit since the last revision:
> 
>   allow manual 100-Continue processing

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. Lets keep separate issues separate. The code that handles 100 in ServerImpl is attributed to `duke` which tells me it's been there for a long time :-)

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PR Comment: https://git.openjdk.org/jdk/pull/27069#issuecomment-3384961130