/godot-multiplayer-networking

Migration notes: godot-multiplayer-networking

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.

3.x → 4.0

Official: Upgrading from Godot 3 to Godot 4

• MultiplayerAPI renames: get_network_unique_id→get_unique_id, has_network_peer→has_multiplayer_peer, etc.
• ENetMultiplayerPeer.get_peer_port → get_peer.
• PacketPeerUDP.listen→bind; is_listening→is_bound.
• StreamPeerTCP must poll(); threading start API uses Callables — rewrite workers.

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 caching protocol incompatible across 4.2/4.3 — upgrade all peers together; gate matchmaking on engine 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() for JSON-RPC multiplayer backends.

4.5 → 4.6

Official: Upgrading to Godot 4.6

• StreamPeerTCP disconnect/status/poll → StreamPeerSocket; TCPServer listen helpers → SocketServer.

4.6 → 4.7

Official: Upgrading to Godot 4.7

No skill-relevant breaking changes for this hop.