Author

Kenton Varda <kenton@cloudflare.com> 2025-12-19 22:15:24 -0600

Parents

d8f9149

Tree

4e94ebc

Add rpc_params_dup_stubs compat flag.

This flag changes the Worker RPC behavior to match Cap'n Web: When a stub is passed in the params of an RPC method, we should NOT transfer ownership of the stub. Instead, the stub is dup()ed.

The comments explain in more detail why these semantics are superior (and thus why Cap'n Web took them).

Additionally, in the case that the params contain an `RpcTarget`, if that target has a `dup()` method, we call it. This specifically fixes an interoperability bug with Cap'n Web: https://github.com/cloudflare/capnweb/issues/110