tajniak81andClaude Opus 5.5
6aaf554336
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Implements PLAN.md Phase 5: the Server-Server API. Warp joins rooms on other servers and lets their users join its rooms, invites across servers with the invitee's server countersigning, rejects remote invites (locally if the inviter is unreachable), and exchanges events, typing, receipts and to-device messages with other homeservers — all behind the runtime switch, which now starts and stops real outbound traffic. The protocol lives in internal/federation with no knowledge of rooms: X-Matrix signing (fuzzed parser), the spec's discovery algorithm keeping the dial address and the TLS name apart, a signed client that refuses every request while the switch is off or the policy denies the destination, and a key ring that caches other servers' keys for at most a week, with optional notaries. The roomserver takes events from elsewhere through the spec's intake: signatures and hashes (a hash mismatch keeps the redacted form), the rules against the event's own auth events, against the state before it — with /get_missing_events for small gaps and /state_ids for wide ones — and against the current state, where a failure is a soft failure. Events held without their state are outliers: a column on roomserver_events, because the current state of a room joined over federation is almost all outliers, and excluded from every timeline query. Forks are resolved at the room's head. Membership across servers is make_join/send_join, make_leave/send_leave and countersigned invites, in both directions; m.room.server_acl is enforced on everything another server sends. History before a remote join is backfilled when /messages pages past it, stored at negative stream positions. internal/federationapi is the running component: the inbound endpoints, and an outbound queue that persists what it owes each destination, sends it in transactions of 50 PDUs and 100 EDUs, backs off from ten seconds to six hours, survives restarts, and drops events persisted while federation is off rather than delivering a backlog in one burst. Its Module is what the switch starts and stops. Also: a TLS listener for port 8448, trusted key servers, key validity and an outbound CA bundle in the config; per-destination health and backoff reset in the admin API; remote profiles, aliases and directories in the Client-Server API; a Complement federation profile. See docs/federation.md, including its known gaps (no partial-state joins, no key rotation). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
32 lines
1.3 KiB
Go
32 lines
1.3 KiB
Go
package syncapi
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import (
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"context"
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"encoding/json"
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"time"
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)
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// Outbound passes this server's ephemeral events on to other servers.
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//
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// Typing notifications, read receipts and to-device messages are not room
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// events and never go through the roomserver, so the federation queue
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// cannot pick them up from there; the sync API, which is where they are
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// written, hands them over instead. Only what a local user did is handed
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// over — the same calls are how an EDU from another server is taken in,
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// and passing those on again would echo them back to where they came
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// from.
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//
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// Every method must return quickly: they are called on the request path
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// of the client that typed, read or sent.
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type Outbound interface {
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Typing(ctx context.Context, roomID, userID string, typing bool, timeout time.Duration)
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Receipt(ctx context.Context, roomID, userID, receiptType, eventID, threadID string, ts int64)
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ToDevice(ctx context.Context, sender, eventType string, messages map[string]map[string]json.RawMessage)
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}
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// SetOutbound connects the federation queue. It is a setter rather than an
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// option because the queue is built after the sync API's dependencies and
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// before the sync API is serving, and nil — no federation — is a valid
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// value throughout.
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func (s *API) SetOutbound(o Outbound) { s.outbound = o }
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