nostr-relay-proxy

nostr-relay-proxy

⚠️ WARNING: Experimental software. Use at your own risk.

A fan-in / fan-out nostr relay proxy. Instead of connecting your nostr client to many relays, connect it to a single nostr relay proxy and enjoy:

• Efficient bandwidth usage: events are deduplicated before being sent to the client.
• Increased performance: offloading deduplication in addition to event caching optimizes query performance.
• Client IP obfuscation: upstream relays only see the IP of the nostr relay proxy, not the client.

Features

Authentication

Access to your nostr relay proxy may be restricted to a whitelist of allowed users. There are two layers of authentication employed to restrict access:

1. Public key allowlist: A list of allowed_npubs in the config file restricts reads and writes to whitelisted users.
2. NIP-42: Queries are restricted to authenticated clients only.

Local database

Events from upstream relays are stored locally on disk in a LMDB. As queries are received, the proxy will check its local database first and return matching events if found. This read-through style cache dramatically speeds up query responses.

Quickstart

1. Build the source code

make build

1. Create a config file

cp example.config.yaml config.yaml

1. Run the nostr-relay-proxy

./bin/nostr-relay-proxy -config ./path/to/config.yaml