I am trying to develop a module that contains 2 output filters and an input filter. The first output filter is working fine . Now my problem is that for the input filter, I don't know whether it is working and the second output filter is not working at all. My modules has to do the following:
(1) the first output filter take the index page ane modifies it
(2) the input filter has to take the modified page and stores it
(3) the second output filter has to take the stored input filter data and sends it to the client.

Suppose if you take mod_case_filter as output filter and mod_case_filter_in as input filter where both are found in apache experimental modules. Can you help me how to pass the data from one output to input and then to output filters again. Please help me.