A simple and reliable Nostr relay proxy server built in Rust using tokio and tokio-tungstenite.

This proxy provides a unified way to connect to multiple Nostr relays, consolidating their event streams into a single pipeline.

• Multiple Relay Connections
  Maintains simultaneous connections to multiple Nostr relays, returning the fastest response while ensuring redundancy.

• Memory Cache
  Keeps a short-term in-memory cache of recent events to avoid sending duplicates from multiple relays, helping reduce load on clients.

• Extensible Architecture
  Organized with modular components, making it easier to add features or customize behavior in the future.

• Memory cache: Event deduplication
• Cache TTL: Automatic expiration
• Message handling: Basic REQ/EVENT support
• Relay reconnection: Persistent connections
• Metrics collection: Event counters
• Frontend UI: Monitoring dashboard

Similar to nostr-rs-relay, the configuration is defined in a toml file (e.g., config.toml):

[network]
# Bind to the specified network address
address = "0.0.0.0"

# Listen on the specified port
port = 8085

[sources]
# External sources (Nostr relays)
relays = [
  "ws://0.0.0.0:8080",
  "ws://0.0.0.0:8080",
]

• network.address – The IP address on which the proxy server will listen.
• network.port – The port for incoming connections from Nostr clients.
• sources.relays – A list of one or more Nostr relay addresses that the proxy will connect to on startup.

cargo build --release

RUST_LOG=info cargo run --release

RUST_LOG=debug cargo run

When the proxy starts, it will connect to the relays specified in your configuration file, listen on the configured address and port, and begin forwarding events to any connected Nostr clients. Make sure to monitor logs for any connection issues.