Nathan Byrd wrote:
I've read the ap_byterange_filter() code (modules/http/http_protocol.c) and it has all the bytecode functionality in that function, plus a helper ap_set_byterange, which is private to that filter, so it can't be used by mod_perl.Hi all,I'm currently attempting to upgrade Apache::PAR to work with mod_perl 2, and one of the issues I am running into is with byterange requests: With mod_perl 1.x, it was possible (using Apache::File) to use byteranges with requests using $r->each_byterange and $r->set_byterange (a good example is in the mod_perl Developer's Cookbook, section 6.7, Byteserving and Range Requests.) It appears that with Apache2/mod_perl2 ap_each_byterange and ap_set_byterange are no longer available, replaced instead by a protocol filter in Apache. The only documentation for Apache I could find regarding this is at http://httpd.apache.org/docs-2.0/developer/filters.html - in that document, it explains that "Byterange: We have coded it to be inserted for all requests, and it is removed if not used." Does anyone know if the above statement includes mod_perl requests, or is there another workaround to send byterange responses with mod_perl modules? I suppose it could be implemented in the module itself (or as a patch to mod_perl, maybe in Apache::Response), but I don't want to attempt that if the byterange filter could be run anyway for a request.
If I understand correctly the benefits of slicing the response in the response handler is good if it somehow saves memory/CPU cycles. Otherwise byterange_filter will do that work for you.
It looks like implementing this functionality as a third party module is a good idea. Mostly likely you can simply rip off the code from ap_byterange_filter, making it more modular and then adding the XS to have the perl api. Or you can write the whole thing in perl. I think all the ingredients are readily available.
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