Allow Relay-to-Relay Traffic

Feature
1

The current implementation of strelaysrv permits the flow of traffic between two clients using a single Relay server. This is usually the most efficient transport method:

client <---> relay <---> client

In some scenarios, allowing blocks within a cluster to transverse multiple Relay servers may be beneficial:

client <---> relay <---> relay <---> client

DigitalOcean operates a dedicated backbone network, interconnecting their datacenters using dark fiber and asynchronous paths. This means a DO server in Amsterdam can ping another instance in New York City faster than it could over the public internet. Allowing multi-relay routing could take advantage of peering situations like this and increase overall sync performance.

2

This has to make the relays clever and need to start somehow measuring throughput with latency.

The idea itself is now flawed, but it’s complicated enough that I think it’s not worth it.

Capable users can set up a VPN tunnel to leverage that.