Listener.md

接口 Listener

type Listener interface {
    // 等待并返回下一个连接或错误
    Accept() (c Conn, err error)

    // 关闭这个监听者
    Close() error

    // 返回监听信息
    Addr() Addr
}

监听者接口

// Listen on TCP port 2000 on all interfaces.
l, err := net.Listen("tcp", ":2000")
if err != nil {
    log.Fatal(err)
}
for {
    // Wait for a connection. 
    conn, err := l.Accept()
    if err != nil {
        log.Fatal(err)
    }
    // Handle the connection in a new goroutine.
    // The loop then returns to accepting, so that
    // multiple connections may be served concurrently.
    go func(c net.Conn) {
        // Echo all incoming data.
        io.Copy(c, c)
        // Shut down the connection.
        c.Close()
    }(conn)
}