/godot-server-architecture

Migration notes: godot-server-architecture

Incremental upgrade for topics this skill covers. Apply one hop, stabilize/test, then next. Never skip hops.

If the project is < 4.0, follow godot-version-migration era bridges (legacy → 3→4) until 4.0, then these hops. Official 3→4: Upgrading from Godot 3 to Godot 4.

4.0 → 4.1

Official: Upgrading to Godot 4.1

• WebRTCPeerConnectionExtension._create_data_channel() return type is WebRTCDataChannel.

4.1 → 4.2

Official: Upgrading to Godot 4.2

No skill-relevant breaking changes for this hop.

4.2 → 4.3

Official: Upgrading to Godot 4.3

• SceneMultiplayer protocol break — dedicated server and clients must share the same minor version.

4.3 → 4.4

Official: Upgrading to Godot 4.4

No skill-relevant breaking changes for this hop.

4.4 → 4.5

Official: Upgrading to Godot 4.5

• Node.get_rpc_config() → get_node_rpc_config().
• JSONRPC.set_scope() → set_method().
• Resource.duplicate(true) deep-copies internal resources only — use duplicate_deep(DEEP_DUPLICATE_ALL) when cloning authoritative server state graphs.

4.5 → 4.6

Official: Upgrading to Godot 4.6

• StreamPeerTCP → StreamPeerSocket; migrate custom TCP gate/login servers.

4.6 → 4.7

Official: Upgrading to Godot 4.7

• Packed array element assignment no longer triggers whole-property setter — audit replicated state bags using typed arrays.
• Typed-return overrides must explicitly return — fix headless server GDScript that relied on implicit null.