Created attachment 26899 [details] Patch to fix mod_isapi not supporting Except:100-Continue HTTP protocol Problem: mod_isapi does not support Except:100-Continue HTTP protocol as IIS. Root Cause: Not implemented by mod_isapi. Solution (implemented in patch): Chunked mode POST's (Expect: 100-continue) are transparently supported by IIS, i.e., IIS by default acknowledges 100(continue) to expect 100-continue POST protocol to pull down the POST data and attached patch imitates IIS behavior in mod_isapi.
I am a little confused and very interested in your report. 100 CONTINUE is effectively a hop-to-hop mechanism. It isn't typically the CGI or ISAPI script's job to handle this. That said, it could be cleanly set-aside from a CGI or ISAPI script and let the client <> server <> script continue processing. Because this affects *both* CGI and ISAPI interfaces, re-tagging this as a core defect/enhancement. The patch can be injected into the core cgi parsing logic, instead, I suspect?
I agree, the patch behavior can be injected into the core cgi parsing logic, I think this would be an ideal fix.
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