why named rpc ?

[binnn6]

As for now, rpc is just used callback across. It's confused me. What about rename it to callback?
And port is confusing too. Maybe ipc should be used ? Just wondering.

[igorsysoev]

RPC is remote procedure call. This is exactly what it does in unit.
Ports are similar to Mach ports.

[binnn6]

This so-called rpc is just for callback, and a msg type(_NXT_PORT_MSG_RPC_READY, _NXT_PORT_MSG_RPC_ERROR). Rpc is too big a name for this. Or maybe rpc_callback could be used.

[VBart]

RPC is a form of IPC and "remote" doesn't necessarily mean physically remote, but in a different virtual address space.