mxaccess/rust/crates/mxaccess-rpc/examples/com-marshal-probe.rs

//! One-shot probe: run `marshal_activated_iunknown_objref` standalone
//! to isolate which step in the NMX activation pipeline is failing
//! with RPC_S_SERVER_UNAVAILABLE (1722) when called from cargo test.
//!
//! Run with:
//! ```text
//! cargo run -p mxaccess-rpc --example com-marshal-probe --features windows-com
//! ```

#[cfg(all(windows, feature = "windows-com"))]
fn main() {
    use mxaccess_rpc::com_objref_provider::{
        marshal_activated_iunknown_objref, MarshalContext,
    };

    eprintln!("step 1: marshal_activated_iunknown_objref(NmxSvc.NmxService, DifferentMachine)");
    match marshal_activated_iunknown_objref("NmxSvc.NmxService", MarshalContext::DifferentMachine) {
        Ok(blob) => {
            eprintln!("OK: {} bytes", blob.len());
            eprintln!("first 64 bytes (hex):");
            for chunk in blob.iter().take(64).enumerate() {
                if chunk.0 % 16 == 0 {
                    eprint!("\n  ");
                }
                eprint!("{:02x} ", chunk.1);
            }
            eprintln!();
        }
        Err(e) => {
            eprintln!("FAIL: {e}");
            std::process::exit(1);
        }
    }
}

#[cfg(not(all(windows, feature = "windows-com")))]
fn main() {
    eprintln!(
        "com-marshal-probe requires Windows + the windows-com feature: \
         cargo run -p mxaccess-rpc --example com-marshal-probe --features windows-com"
    );
}