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The server info is sent LZO1X-compressed inside a checksummed CNetFormConnectionAdmin message, so the previous string and offset heuristics misread server names, player counts, game modes and password flags. The new implementation follows the serialisation reverse-engineered from TrackmaniaServer.exe. - Implement TCP framing, HMAC-MD5 message checksum and LZO1X decompression - Switch the connection into query mode (subtype 8), request the info (subtype 7) and match the reply (subtype 6) by request id - Parse the server info structurally: player and spectator counts, password flags, game mode and limit, challenge window, players, pack mask and comment - Reject other services via checksum and the TrackMania game tag - Keep the previous ServerInfo fields for compatibility - Add offline tests with captured packets and a fake server and regenerate the test documentation Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The classic TrackMania games share one dedicated server (TrackManiaServer.exe /game=Original|Sunrise|Nations) and the predecessor of the TmForever network protocol. The implementation follows the serialisation reverse-engineered from the TrackMania Sunrise eXtreme server and was verified against a live server. - Query the server info via TCP: CNetFormConnectionAdmin version 4 (Original, Sunrise) or 5 (Nations ESWC), switching to the version a Nations ESWC server announces when it refuses the request - Use the Sunrise checksum key and formula (three digest words plus the first key word), reuse the LZO1X decompression of the TmForever query - Parse player and spectator counts, password flags, players, comment, game mode and limit and the challenge window (name, gold time, copper price, decoration index) - Identify the game via the UDP LAN session query (TmOriginal, TmSunrise, TmNationsESWC), which a server only answers for its own game id - Add tests with live captures, fake TCP and UDP servers and the live test results Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The decoration index of a challenge points into a table the server builds from a fixed list per game (0x005ea740): every environment with each decoration plus one entry without decoration, sorted case-insensitively by environment and decoration. - Add TrackmaniaSunrise.DECORATIONS and decoration() for Original, Sunrise and Nations ESWC - Resolve environment and mood of every challenge and of the current one; get_info() and parse_server_info() take the game id, which is needed to tell Original and Sunrise apart (Nations ESWC is known from the game tag) - Verified against the live Sunrise server (e.g. GoodMorning → Island/Sunrise, Midnight → Island/Night, Suburbs → Bay/Day) Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Fixing Trackmania Nations Forever Protocol
Adding Trackmania Original, Sunrise and Nations ESWC protocol