tokio-modbus 0.8.0

Tokio-based Modbus library
Documentation 
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// SPDX-FileCopyrightText: Copyright (c) 2017-2023 slowtec GmbH <post@slowtec.de>
// SPDX-License-Identifier: MIT OR Apache-2.0

use std::future::Future;

/// A Modbus server service.
pub trait Service {
    /// Requests handled by the service.
    type Request;

    /// Responses given by the service.
    type Response;

    /// Errors produced by the service.
    type Error;

    /// The future response value.
    type Future: Future<Output = Result<Self::Response, Self::Error>> + Send + Sync + Unpin;

    /// Process the request and return the response asynchronously.
    fn call(&self, req: Self::Request) -> Self::Future;
}