Hi! With 6.6, VFP_Push was made private, but it looks like there's no alternative for it. I've seen VCL_StackVFP, but it's equally private.
For context, I'm currently using VFP_Push in https://github.com/gquintard/vmod_reqwest/blob/4aecc793643d5eb395c43cbbad463c7b0deef6ab/src/lib.rs#L658 , pretty much exactly like Varnish does it internally: - have a backend with a gethdrs method - get called by VDI_GetHdr - once the headers are in, use VFP_Push to inject a processor at the start of the pipeline It works very well, but if there's a way to respect the API boundaries, I'd be happy to abide. Cheers, -- Guillaume Quintard
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