tokio-modbus 0.12.0

Tokio-based Modbus library
Documentation 
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// SPDX-FileCopyrightText: Copyright (c) 2017-2024 slowtec GmbH <post@slowtec.de>
// SPDX-License-Identifier: MIT OR Apache-2.0

#[cfg(feature = "rtu")]
pub(crate) mod rtu;

#[cfg(feature = "tcp")]
pub(crate) mod tcp;

/// Check that `req_hdr` is the same `Header` as `rsp_hdr`.
///
/// # Errors
///
/// If the 2 headers are different, an [`io::Error`] will be returned with [`io::ErrorKind::InvalidData`].
#[cfg(any(feature = "rtu", feature = "tcp"))]
fn verify_response_header<H: Eq + std::fmt::Debug>(
    req_hdr: &H,
    rsp_hdr: &H,
) -> std::io::Result<()> {
    if req_hdr != rsp_hdr {
        return Err(std::io::Error::new(
            std::io::ErrorKind::InvalidData,
            format!(
                "Invalid response header: expected/request = {req_hdr:?}, actual/response = {rsp_hdr:?}"
            ),
        ));
    }
    Ok(())
}