Function read_client_pid 

async fn read_client_pid(server: &NamedPipeServer) -> u32

Read the connecting client’s 4 byte little-endian process id from the pipe.

Reads exactly 4 bytes from server, retrying on WouldBlock, and decodes them as a u32. Any non-recoverable I/O error panics, as a client that cannot send its PID cannot be correlated and forwarding would be impossible.

Arguments

• server - The connected named pipe server to read from.

Returns

The process id sent by the client.

Panics

Panics if the pipe is closed before 4 bytes can be read, or if any non-WouldBlock I/O error occurs.