Hi Justus,

It might be helpful to consult the Rust implementation  of BIP158 here:
https://github.com/rust-bitcoin/rust-bitcoin/blob/master/src/util/bip158.rs

It has a cleaner structure than Core or Neutrino, includes server and client side
and passes Core's test vectors.

Regards,

Tamas Blummer

> On Jul 22, 2019, at 17:58, Justus Ranvier via bitcoin-dev <bitcoin-dev@lists.linuxfoundation.org> wrote:
> 
> Signed PGP part
> On 7/22/19 12:01 AM, Matt Corallo via bitcoin-dev wrote:
>> Finally, regarding alternatives, the filter-generation code for BIP
>> 157/158 has been in Bitcoin Core for some time, though the P2P serving
>> side of things appears to have lost any champions working on it. I
>> presume one of the Lightning folks will eventually, given they appear to
>> be requiring their users connect to a handful of their own servers right
>> now, but if you really need it, its likely not a ton of work to pipe
>> them through.
> 
> If you want projects to adopt BIP-157/158, you'd do well to fix the
> numerous errors in the specification.
> 
> As it stands right now it is impossible to implement the protocol using
> the specification because he code examples are broken to the point of
> appearing intentionally sabotaged.
> 
> 
>