falcotcp 0.2.0

TCP server/client
Documentation 
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use crate::{CompressionAlgorithm, MessageHeaders};
use std::{io::Error, net::SocketAddr, time::Duration};
#[cfg(not(feature = "tokio-runtime"))]
use std::{
    io::{Read, Write},
    net::TcpStream,
};
#[cfg(feature = "tokio-runtime")]
use tokio::{
    io::{AsyncReadExt, AsyncWriteExt},
    net::TcpStream,
    time::timeout,
};
pub struct Client {
    socket: TcpStream,
}
pub struct Response {
    pub headers: MessageHeaders,
    pub buffer: Vec<u8>,
}
#[cfg(not(feature = "tokio-runtime"))]
impl Client {
    ///
    /// - Timeout: The durations represent the time required to timeout, they being for write, read, and connection.
    pub fn new(timeout: (Duration, Duration, Duration), adr: &SocketAddr) -> Result<Self, Error> {
        let socket = TcpStream::connect_timeout(adr, timeout.2)?;
        socket.set_read_timeout(Some(timeout.1))?;
        socket.set_write_timeout(Some(timeout.0))?;
        return Ok(Client { socket });
    }
    pub fn request(
        &mut self,
        input: Vec<u8>,
        alg: CompressionAlgorithm,
    ) -> Result<Response, Error> {
        let headers = MessageHeaders {
            size: input.len() as u64,
            compr_alg: alg.into(),
        };
        let mut buffer = Vec::with_capacity(9 + input.len());
        buffer.extend(&headers.size.to_le_bytes());
        buffer.push(headers.compr_alg as u8);
        buffer.extend_from_slice(&input);
        self.socket.write_all(&buffer)?;

        let mut response_headers = [0u8; 9];
        self.socket.read_exact(&mut response_headers)?;
        let mshead = MessageHeaders {
            size: u64::from_le_bytes({
                let mut a = [0u8; 8];
                a.copy_from_slice(&response_headers[..8]);
                a
            }),
            compr_alg: response_headers[8],
        };
        let mut buffer = vec![0u8; mshead.size as usize];
        if mshead.size > 0 {
            self.socket.read_exact(&mut buffer)?;
        }
        Ok(Response {
            headers: mshead,
            buffer,
        })
    }
}
#[cfg(feature = "tokio-runtime")]
impl Client {
    ///
    /// - connection_timeout: Timeouts if the connection take too long to stablish.
    pub async fn new(connection_timeout: Duration, adr: &SocketAddr) -> Result<Self, Error> {
        let socket = timeout(connection_timeout, TcpStream::connect(adr)).await??;
        Ok(Client { socket })
    }
    pub async fn request(
        &mut self,
        input: Vec<u8>,
        alg: CompressionAlgorithm,
    ) -> Result<Response, Error> {
        let headers = MessageHeaders {
            size: input.len() as u64,
            compr_alg: alg.into(),
        };
        let mut buffer = Vec::with_capacity(9 + input.len());
        buffer.extend(&headers.size.to_le_bytes());
        buffer.push(headers.compr_alg);
        buffer.extend_from_slice(&input);
        self.socket.write_all(&buffer).await?;

        let mut response_headers = [0u8; 9];
        self.socket.read_exact(&mut response_headers).await?;
        let mshead = MessageHeaders {
            size: u64::from_le_bytes({
                let mut a = [0u8; 8];
                a.copy_from_slice(&response_headers[..8]);
                a
            }),
            compr_alg: response_headers[8],
        };
        let mut buffer = vec![0u8; mshead.size as usize];
        if mshead.size > 0 {
            self.socket.read_exact(&mut buffer).await?;
        }
        Ok(Response {
            headers: mshead,
            buffer,
        })
    }
}