Lonewolf 0.3.0 is a new version of a standalone XMPP server written in Rust. Its main addition is server-to-server federation: configured hosts with public DNS names and certificates can exchange messages, presence, IQ requests, and roster subscriptions. Federation requires trusted certificates and SASL EXTERNAL authentication; Server Dialback is not supported. Compatible servers can share a bidirectional connection, and the server now advertises stanza and idle limits. Direct TLS is available for client and server connections, with discovery supporting both STARTTLS and direct TLS. The release also enables private XML storage for client settings and legacy bookmarks, plus software-version queries; reporting the operating system is disabled by default.
Operational changes include certificate-revocation checks using CA-published lists fetched over plain HTTP by default, with options to use a local list or disable downloads. Administrators can select a Let’s Encrypt certificate profile, and changing profiles triggers early renewal. The default client stanza limit is reduced from 512 KiB to 256 KiB, while traffic counters now include TLS overhead. SCRAM-SHA-512 authentication is available as an opt-in based on an expired draft rather than a published standard; credentials created or changed with it may not work in older versions. Lonewolf remains pre-1.0 and single-node, with full XMPP compliance and clustering still planned. Building from source requires stable Rust and a system linker on Linux or macOS.
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