Filter api messages by UTxO address

[v0d1ch]

Hydra-doom people have the need to filter websocket messages in order to increase speed of operation.

We should build the option to connect to the websocket using /?history=no&address=xyz so only the UTxO with the specified address is returned.

Timeline for this is week or two.

[Quantumplation]

If this proves difficult, worst case we can build a little proxy server in rust that forwards only relevant transactions to the subscriber

[ch1bo]

@Quantumplation Maybe using kupo's hydra support is an alternative?

[Quantumplation]

Hmm; kupo only forwards UTxOs, not txs, and is query based rather than push based so it'd involve a lot of changes but it might be possible.

Also aren't you on paternity leave? :)

[v0d1ch]

Any changes should be done in hydra-doom branch since that one already contains some hydra-doom specific things https://github.com/cardano-scaling/hydra/commits/hydra-doom/

[v0d1ch]

@Quantumplation what kind of filters on txs are you looking to see exactly? Regular tx outputs filtered by recipient address or something more involved?

[Quantumplation]

Ideally just any txs that have an output to the specified address