[1egoman]

Summary

Adds the built-in data channel RPC error code DataChannelRpcConnectionClosed = 1506, message "Connection closed", to utils/data_channel_rpc.go.

The client SDKs recently added this code. A pending performRpc call fails with it when the caller's own room disconnects mid-call. That keeps it separate from RecipientDisconnected (1503), which means the remote participant left.

• JS: fix(rpc): reject pending performRpc calls when the room disconnects client-sdk-js#2251 (CONNECTION_CLOSED)
• Rust: livekit-rpc: fail in-flight calls with CONNECTION_CLOSED when the room closes rust-sdks#1671 (RpcErrorCode::ConnectionClosed)

I compared the full code list against both SDKs. 1506 is the only one missing here; every other code and message already matches.

Change

• Add DataChannelRpcConnectionClosed to the 1500 + iota block (so it's 1506) and its message to dataChannelRpcErrorMessages.
• Map it to psrpc.Unavailable in PsrpcError(), the same as RecipientDisconnected. Without a case it would fall through to Internal.

Checked locally: the constant is 1506, Error() gives RpcError 1506: Connection closed, and PsrpcError().Code() is unavailable.

🤖 Generated with Claude Code

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🦋 Changeset detected

Latest commit: 5e8c041

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 2 packages

Name	Type
@livekit/protocol	Patch
github.com/livekit/protocol	Patch

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