Reza Naghibi

Empty bodies and IMS/INM/304

17

I believe an optimization was made to not attempt IMS/INM requests when we have no body. This prevents a backend from doing a 304 response in such cases. Some backends,...

There is an unguarded use-after-free error [here in vmod_dynamic.c](https://github.com/nigoroll/libvmod-dynamic/blob/9666973952f62110c872d720af3dae0b85b4b597/src/vmod_dynamic.c#L160). This affects all versions of `vmod_dynamic`, potentially all the way back to 4.1. This is unguarded meaning there are no magic...

Setting backend timeouts to zero does not wait forever

8

According to the docs, setting certain timeouts like `first_byte_timeout` and `between_byte_timeout` to `0` causes them to disable and wait forever, but this is not the case. https://github.com/varnishcache/varnish-cache/blob/f4dcf8f02a2fb059dacba4c7bedefccbe9897cd2/include/tbl/params.h#L248-L249 These timeouts zero...