What's Changed

• Fix encrypted connection decrypt failures and stale CMClient events by @xPaw in #1658
• Fix WebSocket connection teardown throwing and leaving stale state by @xPaw in #1657

Full Changelog: 4.0.0-Beta.1...4.0.0-Beta.2

• Added native AOT and trimming support with compile-time protobuf-net models (SteamKitProtobuf.Model, UnifiedService.Model).
• Added TypeModel overloads to ClientMsgProtobuf, ClientGCMsgProtobuf, SendMessage, SendNotification and CallProtobufAsync.
• WebAPI Call and CallAsync now flatten list arguments to name[0], name[1].
• Fixed WebAPI key not being sent when a call had no arguments.
• Fixed CallProtobufAsync rejecting format=protobuf_raw in arguments.
• Fixed empty parameters in WebAPI query strings.
• Updated dependencies.

BREAKING CHANGES

• Removed dynamic support from WebAPI.Interface and WebAPI.AsyncInterface, use Call, CallAsync or CallProtobufAsync instead.

This is a test of NuGet Trusted Publishing. It is otherwise identical to v3.5.0.

• Added CallbackManager.Subscribe overloads that accept callbacks returning Task.
• Added SteamClient.GetRequiredHandler<T>, which throws if the handler is not registered.
• Added SteamUserStats.DownloadLeaderboardEntriesForUsers.
• Added BypassProxiesOfType to CDN Server.
• Replaced the vendored LZMA decoder with a span-based decoder.
• Vectorized Adler-32 checksums.
• Fixed GetAuthSessionTicket hanging or throwing "Ticket verification failed" when called repeatedly.
• Fixed a crash or disconnect when messages were sent from multiple threads at the same time on an encrypted connection.
• Fixed a NullReferenceException when sending a message while an encrypted connection is disconnecting.
• Fixed an exception when closing an already disposed websocket.
• Fixed decrypted depot chunk length validation.
• Short or corrupt VZstd chunks now throw InvalidDataException.
• Updated Steam enums and protobufs.
• Updated dependencies.

BREAKING CHANGES

• SteamCloud now uses unified messages: RequestUGCDetails, GetSingleFileInfo and ShareFile return Task, and their callbacks no longer derive from CallbackMsg.
• Removed the deprecated IsSteamDeck from LogOnDetails, use GamingDeviceType instead.
• Removed steammessages_clientserver_ufs protobufs.

• Added UserCountryCode to LoggedOnCallback.
• Added privacy-related enums.
• Moved Utils.AdlerHash to DepotChunk.AdlerHash which is an unrolled version for better performance.
• Removed LINQ allocations from KeyValue indexer.
• Updated EGamingDeviceType enum.
• Fixed GameID.GetHashCode.
• Fixed LinkTarget not being decrypted in DepotManifest.
• Updated Steam enums and protobufs.
• Updated dependencies.

BREAKING CHANGES

• SteamKit now targets .NET 10.
• Removed deprecated Facebook fields from AccountInfoCallback.

• Deprecated IsSteamDeck and added GamingDeviceType to LogOnDetails
• Updated Steam protobufs.
• Updated dependencies.

• Configuration.HttpClientFactory will now be used for websocket CM connections.
  • Added HttpClientPurpose enum to allow returning different HTTP clients for different purposes.
• Post client disconnection callback before cancelling async jobs.
  • Related to the AsyncJob change in the previous release.
• Added some Deadlock protobufs.
• Updated Steam protocol version.
• Updated Steam protobufs.

• AsyncJob will now instantly fail if not connected to Steam.
  • This is technically a breaking change if you relied on this behaviour.
• Added support for zstd compressed depot chunks.
  • Added a dependency on ZstdSharp.Port.
• Added an GetAuthTicketForWebApi
• Added an argument to pass extra args to WebAPI.CallProtobufAsync<TResponse, TRequest>()
• Updated Steam protobufs.

• Added SteamApps.PICSGetPrivateBeta.
• Fixed PersonaStateCallback.StatusFlags
• Fixed parsing old v4 depot manifests.
• DepotChunk.Process now validates the magic bytes of the compression.
• Updated Steam EMsg.
• Updated dependencies.

• Fixed handling on tasks to reduce chance of deadlocking sync-over-async consumers. (#1488)
• Fixed a crash due to library resolution errors when running under .NET 9.0.1 on macOS. (#1501)
• Updated Steam protobufs.
• Updated dependencies. (#1493, #1500)