Authenticate to a relay¶

Some relays ask you to identify yourself before reading their feeds. Add Nip42RelayAuth to a trusted relay before connecting it:

String relayUrl = "wss://relay.example.com";
NostrRelay relay = new NostrRelay(relayUrl);
relay.addComponent(new Nip42RelayAuth(relayUrl, signer));
pool.addRelay(relay).await();

When the relay sends a challenge, the component asks your signer to sign a response and sends it back using NIP-42. The signer may prompt the user for approval.