Hi Group! I'd love to get some help in writing a request stream reader in IIS6. My goal is to measure the upload speed of certain requests, and to do so I'd need to get events for every read chunk of the request. In IIS5 we used SF_NOTIFY_READ_RAW_DATA, but this is currently unsupported and I don't see how HSE_REQ_EXEC_URL can do the same trick. I've read David Wang's replies in the link below which suggests it's possible to get a hold of chunks of the incoming request as IIS keeps reading it from the socket. Unforetunately, I couldn't understand how to do so. I'd most appreciate any lead regarding how to write an ISAPI ext/filter that gets upload notifications in IIS6. Best Tal http://groups.google.com/group/microsoft.public.inetserver.iis/tree/browse_frm/thread/f31b17d376c962fe/074c700a0f828ecd?rnum=11&hl=en&q=HSE_REQ_EXEC_URL+stream&_done=%2Fgroup%2Fmicrosoft.public.inetserver.iis%2Fbrowse_frm%2Fthread%2Ff31b17d376c962fe%2F32af8e5eeefbc65d%3Ftvc%3D1%26q%3DHSE_REQ_EXEC_URL+stream%26hl%3Den%26#doc_074c700a0f828ecd)