1. I am trying to implement OnReadRawData(...). If I changed the content (remove some strings in the pvInData buffer), I have to change the value of cbInData and cbInBuffer, is that right? Anything else I should change?

2. What is the pFilterContext in HTTP_FILTER_CONTEXT for? Can I allocate a chunk of memory, put ANY data in it and use pFilterContext to point to it? Will that affect anything else?