failed to generate portable service ipc token from OsRng: {}

Error message

failed to generate portable service ipc token from OsRng: {}

What it means

Error "failed to generate portable service ipc token from OsRng: {}" thrown in rustdesk/rustdesk.

Source

Thrown at src/ipc.rs:1242

            allow_err!(
                stream
                    .send(&Data::FileTransferEnabledState(Some(enabled)))
                    .await
            );
        }
        _ => {}
    };
}

#[cfg(target_os = "windows")]
pub(crate) fn generate_one_time_ipc_token() -> ResultType<String> {
    use hbb_common::rand::{rngs::OsRng, RngCore as _};
    use std::fmt::Write as _;

    let mut random_bytes = [0u8; IPC_TOKEN_RANDOM_BYTES];
    let mut rng = OsRng;
    rng.try_fill_bytes(&mut random_bytes).map_err(|err| {
        hbb_common::anyhow::anyhow!(
            "failed to generate portable service ipc token from OsRng: {}",
            err
        )
    })?;

    let mut token = String::with_capacity(IPC_TOKEN_LEN);
    for byte in random_bytes {
        let _ = write!(token, "{:02x}", byte);
    }
    Ok(token)
}

#[cfg(target_os = "windows")]
pub(crate) fn constant_time_ipc_token_eq(expected: &str, candidate: &str) -> bool {
    if expected.len() != IPC_TOKEN_LEN || candidate.len() != IPC_TOKEN_LEN {
        return false;
    }
    expected

View on GitHub (pinned to 7aa98d43cf)

When it happens

Trigger: Thrown at src/ipc.rs:1242 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of rustdesk/rustdesk@7aa98d43cf (2026-08-16). Data as JSON: /api/errors/2311820629a0f77f. Report an issue: GitHub.