Introduction and application examples of SCETTY framework
Introduction and application examples of SCETTY framework
Scetty is an asynchronous network programming framework based on Java, which aims to provide high -performance network communication capabilities.It is based on Java Nio and uses event -driven to process network requests and responses.The design goal of SCETTY is to provide simple, easy -to -use, efficient and stable network programming solutions.
The working principle of Scetty is similar to the Reactor mode. It processs requests from the client through event loop and responds in a timely manner.It uses a single thread model to process all requests, so it can avoid thread switching and context switching overhead, thereby providing higher performance and throughput.
The following is a simple SCETTY application example to achieve a simple Echo server:
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
public class EchoServer {
private final int port;
public EchoServer(int port) {
this.port = port;
}
public void start() throws Exception {
EventLoopGroup group = new NioEventLoopGroup();
try {
ServerBootstrap b = new ServerBootstrap();
b.group(group)
.channel(NioServerSocketChannel.class)
.childHandler(new ChannelInitializer<SocketChannel>() {
@Override
public void initChannel(SocketChannel ch) throws Exception {
ch.pipeline().addLast(new EchoServerHandler());
}
})
.option(ChannelOption.SO_BACKLOG, 128)
.childOption(ChannelOption.SO_KEEPALIVE, true);
// Bind the port and start receiving the connection
b.bind(port).sync().channel().closeFuture().sync();
} finally {
group.shutdownGracefully().sync();
}
}
public static void main(String[] args) throws Exception {
int port = 8080;
if (args.length > 0) {
port = Integer.parseInt(args[0]);
}
new EchoServer(port).start();
}
private static class EchoServerHandler extends ChannelInboundHandlerAdapter {
@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) {
ctx.write (msg); // Write the received data back to the client
}
@Override
public void channelReadComplete(ChannelHandlerContext ctx) {
ctx.flush (); // Refresh the buffer and send the message to the client
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
cause.printstacktrace (); // Print abnormal stack tracking
ctx.close (); // Close the connection
}
}
}
The above code demonstrates how to write a simple Echo server using SCETTY.When starting the server, it will listen to the specified port and receive connections from the client.Whenever the message sent by the client, the server will write the message back to the client.At the same time, it also handled some abnormalities and closed the connection when abnormalities occurred.
The simple and easy use of the Scetty framework allows developers to quickly build high -performance network applications.Whether it is developing a WebSocket server, implementing TCP file transmission, or building a custom network protocol, SCETTY can provide flexible and efficient solutions.
