socket9 0.1.0-alpha.1

Extended untilities for the networking/unix sockets and raw network sockets
Documentation 
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/*-
 * socket9 - A RAW networking sockets manipulation and configration basing on 
 * strong types.
 * 
 * Copyright (C) 2021 Aleksandr Morozov, Lucia Hoffmann
 * Copyright (C) 2025 Aleksandr Morozov
 * 
 * The syslog-rs crate can be redistributed and/or modified
 * under the terms of either of the following licenses:
 *
 *   1. EUROPEAN UNION PUBLIC LICENCE v. 1.2 EUPL © the European Union 2007, 2016 OR
 *
 *   2. the Mozilla Public License Version 2.0 (the “MPL”) OR
 *                     
 *   3. The MIT License (MIT)
 */

 
use std::{cmp::min, ffi::c_int, time::Duration};

use crate::{IPPROTO_TCP, SockOptMarker, OptRMarker, OptWMarker, TCP_KEEPINTVL};


#[repr(transparent)]
#[derive(Debug, Clone, Copy)]
pub struct IpProtoKeepIntvl(c_int);

impl SockOptMarker for IpProtoKeepIntvl 
{
    const SO_LEVEL: c_int = IPPROTO_TCP;  

    const SO_OPTNAME: c_int = TCP_KEEPINTVL;

    type DataType = Duration;
    type InputType = c_int;

    #[inline]
    fn from(value: Self::InputType) -> Self 
    {
        return Self(value);
    }

    #[inline]
    fn get(self) -> Self::DataType
    {
        return Duration::from_secs(self.0 as u64);
    }

    #[inline]
    fn from_user(sz: Self::DataType) -> Self where Self: Sized
    {
        return Self(min(sz.as_secs(), i32::MAX as u64) as Self::InputType);
    }
}

impl OptRMarker for IpProtoKeepIntvl {}
impl OptWMarker for IpProtoKeepIntvl {}