Hello, Thank you for your support and the helpful suggestions.
I will explore possible implementation approaches for adding Range header support. If I can get it working successfully, I plan to submit a Pull Request for review. In the meantime, I will wait for any further feedbackon the proposal by anyone. Best regards, D. Yamazaki ---- On Fri, 24 Oct 2025 00:11:58 +0900 Daniel Fuchs <[email protected]> wrote --- > Hi, > > I would support investigating adding support for Range header in > the FileServerHandler. > > In the HttpClient, we have recently added a new > BodyPublishers.ofFileChannel() request publisher as a > potential building block to ease implementation of > partial/resumable file uploads in applications. > > We have nothing out of the box for resumable file downloads > in the HttpClient API though. > > It would be good if you could use the HttpClient API > in the unit tests you will develop. Maybe we could use > that as an opportunity to learn whether some more building > blocks of general utility could be added on the client > side (in the future) to ease the implementation of applications > that would have a need for Range headers, such as to implement > a download manager for instance. > > best regards, > > -- daniel > > > On 23/10/2025 15:49, Daisuke Yamazaki wrote: > > Thank you for the clarification and context. > > > > I understand that there is a legitimate need for Range header support. > > However, whether such a feature is necessary for the simple jwebserver is > > still open for discussion. > > > > Nevertheless, while the benefits are clear, I do not see any significant > > drawbacks apart from potential maintainability or slight code growth. > > I personally think it would be reasonable to implement this feature. > > > > I plan to wait for a bit to allow further discussion, and if no objections > > arise, I intend to proceed with the implementation. > > > > ---- On Thu, 23 Oct 2025 02:56:29 +0900 Ethan McCue <[email protected]> > > wrote --- > > > > > Adding for context that there are legitimate usages for this that are > > within the jdk httpserver's remit of jwebserver and educational purposes. > > Cheerpj would let a student run their java code in a browser and requires > > range headers support. > > > > > > On Wed, Oct 22, 2025, 7:23 AM Daisuke Yamazaki <[email protected]> > > wrote: > > > > > > Hello all, > > > > > > I would like to work on implementing Range header support for > > jwebserver, > > > related to JDK-8355572. > > > Before I start working on it, i'd like to confirm whether it's okay > > for me to > > > take this issue. > > > > > > Here's my current design idea: > > > > > > 1. Introduce a RangeEntry record inside FileServerHandler to > > represent > > > each requested range > > > 2. In FileServerHandler.serveFile(), detect the Range header and > > parse it into > > > a list of RangeEntry objects. > > > If parsing fails or the range is invalid, return 416 Range Not > > Satisfiable. > > > 3. If multiple ranges are specified, generate a random boundary > > > string and return a multipart/byteranges response. > > > > > > Please let me know if it’s okay for me to proceed with this > > implementation, > > > or if there are any design points I should consider before starting. > > > > > > Thanks, > > > D. Yamazak > > > > > > >
