[EMAIL PROTECTED] wrote:
> > So the question is - which hook should be called to fiddle with the
> > headers after the content generator runs, but before the headers are
> > sent to the network, whether a body exists or not...?
>
> You are using the wrong kind of output filter. Take a look at how
> http_header_filter is added, and just copy that model.
I changed the filter type to AP_FTYPE_HTTP_HEADER, but now the filter
runs too late and no headers are changed.
Looking closer at the core code, in modules/http/http_request.c and
server/protocol.c:
r->output_filters = conn->output_filters;
r->input_filters = conn->input_filters;
ap_add_output_filter("BYTERANGE", NULL, r, r->connection);
ap_add_output_filter("CONTENT_LENGTH", NULL, r, r->connection);
ap_add_output_filter("HTTP_HEADER", NULL, r, r->connection);
All three of the above filters are AP_FTYPE_HTTP_HEADER filters - this
means it's impossible to add any more AP_FTYPE_HTTP_HEADER filters,
because they would always be added after the HTTP_HEADER filter ran,
thus they cannot do anything.
Adding the filter in the pre_connection phase could get round this, but
would this then break TLS, etc?
How about a new hook for adding AP_FTYPE_HTTP_HEADER filters?
Regards,
Graham
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