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Netty is a high-performance, asynchronous, event-driven network application framework that makes it easy to build scalable network applications.
In PHP, using Netty4 functions allows us to build network applications more flexibly and efficiently. This article explains how to use Netty4 functions in PHP.
1. Preparation
Before using the Netty4 function, you need to install PHP7 and Netty4 extensions. You can use the following command to install:
sudo pecl install netty
2. Create a Netty server
The steps to create a Netty server are as follows:
<?php use NettyBufferByteBuf; use NettyHandlerChannelHandlerContext; use NettyHandlerChannelInboundHandler; class ServerHandler extends ChannelInboundHandler { public function channelRead(ChannelHandlerContext $ctx, $msg) { // 解析消息体 $byteBuf = ByteBuf::wrap($msg); $data = $byteBuf->readString(); // 处理业务逻辑 // ... // 响应消息 $response = 'Hello, ' . $data . '!'; $ctx->write($response); } }
<?php use NettyBootstrapServerBootstrap; use NettyChannelSocketServerSocketChannel; use NettyEventEventLoopGroup; use NettyTransportSocketAddress; class ServerLauncher { private $bossGroup; private $workerGroup; private $bootstrap; private $host; private $port; public function __construct($host, $port) { $this->host = $host; $this->port = $port; $this->bossGroup = new EventLoopGroup(1); $this->workerGroup = new EventLoopGroup(4); $this->bootstrap = new ServerBootstrap(); $this->bootstrap->group($this->bossGroup, $this->workerGroup) ->channel(ServerSocketChannel::class) ->childHandler(new ServerHandler()); } public function run() { $channel = $this->bootstrap->bind(new SocketAddress($this->host, $this->port)); $channel->closeFuture()->sync(); $this->bossGroup->shutdownGracefully(); $this->workerGroup->shutdownGracefully(); } }
<?php $server = new ServerLauncher('127.0.0.1', 8080); $server->run();
3. Write Netty client
The steps to create a Netty client are as follows:
<?php use NettyBufferByteBuf; use NettyHandlerChannelHandlerContext; use NettyHandlerChannelInboundHandler; class ClientHandler extends ChannelInboundHandler { private $response; public function channelRead(ChannelHandlerContext $ctx, $msg) { // 解析消息体 $byteBuf = ByteBuf::wrap($msg); $this->response = $byteBuf->readString(); // 关闭连接 $ctx->close(); } public function getResponse() { return $this->response; } }
<?php use NettyBootstrapBootstrap; use NettyChannelChannelOption; use NettyChannelSocketClientSocketChannel; use NettyEventEventLoopGroup; use NettyTransportInetSocketAddress; class ClientLauncher { private $group; private $bootstrap; private $host; private $port; public function __construct($host, $port) { $this->host = $host; $this->port = $port; $loopGroup = new EventLoopGroup(1); $handler = new ClientHandler(); $this->bootstrap = new Bootstrap(); $this->bootstrap->group($loopGroup) ->channel(ClientSocketChannel::class) ->option(ChannelOption::SO_KEEPALIVE, true) ->handler($handler); $this->group = $loopGroup; } public function connect($message) { $channel = $this->bootstrap->connect(new InetSocketAddress($this->host, $this->port))->sync(); $channel->write($message)->addListener(function($future) use($channel, $handler) { if ($future->isSuccess()) { echo "Send message success. "; } else { echo "Send message failed. "; } }); $channel->closeFuture()->sync(); $this->group->shutdownGracefully(); return $handler->getResponse(); } }
<?php $client = new ClientLauncher('127.0.0.1', 8080); $response = $client->connect('Jack'); echo "Receive response: " . $response . " ";
4. Summary
Using Netty4 to build network applications in PHP can improve the performance and scalability of the application, making it easier for developers to write efficient applications. This article explains how to use Netty4 functions in PHP and shows how to create a Netty server and client through a simple example. Hope it helps readers.
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