rust tcp server frame.

Examples Echo

``` rust

![feature(async_closure)]

use tcpserver::tokio; use tokio::io::AsyncReadExt; use tcpserver::XBWrite; use tcpserver::Builder;

[tokio::main]

async fn main() { let tcpserver = Builder::new("0.0.0.0:5555") .setconnectevent(|addr| { println!("{:?} connect", addr); true }).setinputevent(async move |mut peer| { let mut buff = [0; 4096];

    while let Ok(len) = peer.reader.read(&mut buff).await  {
        if len==0{
            break;
        }
        println!("{:?}",&buff[..len]);
        let mut writer = XBWrite::new();
        writer.write(&buff[..len]);
        peer.send_mut(writer).await.unwrap();
    }
    println!("{:?} disconnect",peer.addr);
}).build().await;

tcpserver.start().await.unwrap();

} ```