Fix #245: Resolve unexpected teleport confirmation ID kick on 1.9+ servers#254
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Ghost-Kokoro wants to merge 1 commit intoViaVersion:masterfrom
Open
Fix #245: Resolve unexpected teleport confirmation ID kick on 1.9+ servers#254Ghost-Kokoro wants to merge 1 commit intoViaVersion:masterfrom
Ghost-Kokoro wants to merge 1 commit intoViaVersion:masterfrom
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florianreuth
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Mar 21, 2026
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florianreuth
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Is this tested? Pretty sure ViaRewind will already read the teleport id away (MixinS08PacketPlayerPosLook) as the vanilla client would otherwise get kicked.
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Description
This PR addresses Issue #245, where 1.8.9 clients get kicked with the error
Unexpected teleport confirmation idwhen playing on 1.9+ servers.Root Cause
In 1.9+ protocols, servers append a
teleportIdtoS08PacketPlayerPosLookand mandate anACCEPT_TELEPORTATIONresponse before processing subsequent client movements. Since pure 1.8.9 clients lack this logic, the teleport ID mismatch or omission causes the server to either infinitely rubberband the player or outright kick them for sending invalid confirmation IDs.Closes #245