Hi, I have looked into the ap_get_client_block(), it uses the brigade api too. If I would remove the old api calls from mod_WebObjects, how many bytes I should read on every call to ap_get_brigade (BLOCK_READ)? Is it necessary to define a timer, which stops a block read, if I try to read too many bytes? Or should I use NONBLOCK_READ?
My last try was, to get only one byte from the client first and then read the content-length header again (in the case, that it has been changed by my filter) and call ap_get_client_block() with the corrected length again. But I learned, that my filter collects all bytes of the request body (the brigade contains EOS then) to process it and a second call to ap_get_client_block() returns always 0, because req->remaining = 0. I don't see a chance to implement my filter at the moment. Is it possible to use mod_proxy? A second server in front of the WebObjects server could re-send the browser requests with mod_proxy which calls my filter too. Maybe with SetEnv proxy-sendcl 1 the Content-Length header could be fixed after the filter, just before resend the request to the backend server (WebObjects). But I have to change all response links (HTML, CSS, Javascript) with mod_proxy_html from the WebObjects server to the proxy. But this is so much overhead to intercept and change a simple request. Any further ideas? Thanks a lot André Von: Eric Covener <cove...@gmail.com> An: <modules-dev@httpd.apache.org> Gesendet: 22.12.2016 14:43 Betreff: Re: Change the content-length header for other filters On Thu, Dec 22, 2016 at 8:37 AM, Andre Rothe <andre.ro...@zks.uni-leipzig.de> wrote: > I don't know, how mod_webobjects will read the request content, > but it seems, that my changes on the request are not transparent. > It is not a problem of the transmitted data, it is a length problem > (if I don't change the content length, the request will be processed). It uses the old ap_get_client_block() interface instead of using the bucket brigade directly. It does appear to copy the content length before the first read is performed [meaning your input filter has not run for the first time when it looks at the length). -- Eric Covener cove...@gmail.com
