Document the event-sourced store, gossip replication, push-on-commit,
compaction and the TLS peer link; drop the stale persistence status.

2026-07-12 07:31:16 +00:00

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fedserv

A federated IRC services daemon in Rust. Protocol-agnostic core, InspIRCd link first.

Clean-room, inspired by the ideas behind modern event-log/gossip services, not derived from any project's source.

Design

proto/ the ircd link layer. A Protocol trait maps raw server-to-server lines to and from a normalized NetEvent/NetAction model, so the engine never touches a raw line and a new ircd is one new module. InspIRCd is the first.
engine/ the services engine: live network state, the account store, and the Service trait. The store is event-sourced: every change is an Event appended to a per-node log, and state is a fold over that log.
gossip/ node-to-node replication over the logs.
services/ the pseudo-clients: NickServ first, then ChanServ / OperServ.

Replication

Each log entry carries an origin, a per-origin seq, and a Lamport clock. Peers connect, exchange version vectors, and send each other the entries the other lacks; a freshly committed entry is also pushed immediately, so a registration propagates in milliseconds. Ingest is idempotent, so re-delivery and reconnect after a split both converge. The log is compacted to one entry per account as it grows. An account registered on any node works on all of them.

Config

[uplink]
host = "127.0.0.1"
port = 7000
password = "linkpw"

[server]
name = "services.example"
sid = "42S"

[gossip]                 # omit to run a single, non-replicating node
bind = "0.0.0.0:16700"
secret = "shared-secret"

[gossip.tls]             # omit for a plaintext link
cert = "certs/nodeA.crt"
key  = "certs/nodeA.key"
ca   = "certs/ca.crt"    # a peer must present a certificate signed by this CA

[[peer]]
addr = "nodeB.example:16700"
name = "nodeB"           # TLS name to expect; must match the peer certificate

Generate certificates with scripts/gen-certs.sh.

Run

cp config.example.toml config.toml   # edit uplink + link password
cargo run -- config.toml

Status

Links to an InspIRCd uplink and runs NickServ (REGISTER, IDENTIFY, LOGOUT, CERT, and SASL PLAIN / SCRAM-SHA-256/512 / EXTERNAL) over an event-sourced account store replicated between nodes by gossip, with an optional mutually authenticated TLS peer link. Next: ChanServ.

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