this commit also remove all the sonic envelope parsing and reintroduces filters in REQ as a slice instead of as a singleton.
why? well, the sonic stuff wasn't really that fast, it was a little bit but only got fast enough once I introduced unsafe conversions between []byte and string and did weird unsafe reuse of []byte in order to save the values of tags, which would definitely cause issues in the future if the caller wasn't aware of it (and even if they were, like myself).
and the filters stuff is because we abandoned the idea of changing NIP-01 to only accept one filter per REQ.
- a way to handle custom messages from Relay (NEG-whatever etc)
- negentropy implementation (adapted from that other one)
- nip77 nostr negentropy extension
- QueryEvents method for RelayStore that returns a channel (makes negentropy syncing work more seamlessly)
A websocket dial may hand for an unreasonably long time and a nostr client
has no control over this when trying to connect to a relay.
Go started introducing context in networking since 2014 -
see https://go.dev/blog/context - and by now many net functions have
XxxContext equivalent, such as DialContext.
Example usage of the change introduced by this commit:
ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
defer cancel()
r, err := nostr.RelayConnectContext(ctx, "ws://relay.example.org")
The code above makes RelayConnectContext last at most 3 sec, returning
an error if a connection cannot be established in the given time.
This helps whenever a tight control over connection latency is required,
such as distributed systems.
The change is backwards-compatible except the case where RelayPool.Add
sent an error over the returned channel without actually closing said
channel. I believe it was a bug.
