Tuwunel 1.7.1

June 5, 2026

New Features & Enhancements

• A new federation data-fetching service improves reliability in rooms whose history is spread across many servers by locating missing events through concurrent queries. It ranks candidate servers by room-membership popularity and recent reachability, and reuses requests already in flight instead of issuing duplicates. Resolved state for outlier events, fetch and backoff decisions, and per-server reachability ("Peer Status") are now cached persistently, and auth-chain, state, prev-event, and backfill fetches all run through it. Servers that used to re-request the same uncacheable lookups should see far less repeated federation traffic.

• OIDC device authorization grant (RFC 8628) lets users sign in on input-constrained devices. The MSC4191 account-management action set is now complete with a deep-linked cross-signing reset, and MSC3861 OAuth 2.0/OIDC is advertised on /versions. The token endpoints and refresh-token lifecycle were reworked, dynamic client registration is opt-in and validates submitted client metadata, and device-scope binding requires PKCE. The OIDC authorization-server chapter of the documentation was expanded to match.

• Several additional MSCs land this cycle: MSC3980 (event_fields trimming on /sync), MSC3860 (media download redirects), MSC4311 (origin_server_ts on the stripped create event), MSC1219 (key backup storage conformance), MSC2659 (appservice ping error codes), MSC3550 (403 M_FORBIDDEN allowed on profile lookup), and a stable m.forget_forced_upon_leave capability (MSC4267). MSC4380 invite blocking now also covers invites delivered through /sync and createRoom.

• Support-contact discovery gains a PGP field and policy links (MSC4439, MSC4266), graciously contributed by @x86pup. The /.well-known/matrix/support endpoint can now advertise a pgp_key per contact (with raw key material rejected) and link support policies, and multiple support contacts can be configured with validation.

• @dasha-uwu added an admin media preview command for debugging URL previews, retired blurhashing, dropped the legacy media-preview redirect, and removed the deprecated server-keys endpoint.

• Sliding sync (v5) now retracts departed and left rooms from the list and adds re-invited rooms back, so clients track membership churn without a full resync.

• A device may now hold multiple access tokens, for easier rotation and concurrent sessions.

• /context can optionally resolve events it has not yet received over federation, and outbound HTTP compression gained per-direction opt-out switches.

• An admin command to purge every room containing a given user was added, raised by @winyadepla in (#472).

• Documentation for ip_source_trusted_subnets now warns about accidentally including a proxy in the trusted set, courtesy of @BVollmerhaus in (#468).

• Diagnostic admin command suites were added for the federation fetcher and Peer Status, and the runtime can dump tokio and getrusage metrics to JSON at exit.

Bug Fixes

• A regression introduced with ip_source in 1.6.1 blocked locally-connected appservices and other loopback clients (#465). Loopback peers and trusted-peer subnets now bypass the configured ip_source, including over the Unix-socket listener, and the axum-client-ip dependency was replaced with inlined helpers. Sincere apologies to everyone whose bridges went quiet.

• Remote room directory and summary lookups are more resilient over federation: the room-summary fallback now tries every via server (5c9998374), and a failed remote publicRooms request now returns a 502 (9a879776c).

• Thank you @x86pup for reporting in (#466) that a bad unix_socket_path produced an opaque startup failure; listener initialization errors now name the offending path.

• !admin query oauth associate replied with an empty message and did nothing, reported by @Vazgen005 in (#467). It now emits a confirmation and accepts a force flag.

• @dasha-uwu fixed a compression configuration option that could accidentally disable client-side decompression.

• Several federation correctness fixes: the federation lock is now held across the invite residency check to close a join/unban race (add512b76); a send_join response that omits state fails over to other servers (9c158d3a0); each transaction's PDUs are sorted topologically before handling (91218e1df); and references outside the auth graph are treated as non-edges during resolution (664391995).

• Knock membership is now persisted and a remote re-knock re-drives to reconcile state; per-PDU backfill errors are isolated so one bad event no longer aborts the batch; and thread redaction walks through the redacted target.

• Media fetches and URL previews now honor CIDR denylists for the addresses they resolve to (af1266af3, 554557cf3). Buffered outbound responses are size-bounded, and federation key lookups are bounded and backed off.

• Configuration handling improved: an unreadable client_secret_file now reports the path and IO error (844f123c7), matched keys can be excluded from the "unknown to tuwunel" warning (6bbfd0a93), and packaged builds no longer drop their malloc_conf tuning (de0eb1d2e).