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‎.gitignore‎

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# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
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hs_err_pid*
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*.iml
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*.idea/

‎02nio/nio02/README.md‎

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# netty-gateway
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```
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```

‎02nio/nio02/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>io.github.kimmking</groupId>
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<artifactId>netty-gateway</artifactId>
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<version>0.0.1-SNAPSHOT</version>
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<packaging>jar</packaging>
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<name>netty-gateway</name>
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<description>Demo project for Spring Boot</description>
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<parent>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-parent</artifactId>
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<version>2.0.4.RELEASE</version>
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<relativePath/>
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</parent>
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<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
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<java.version>1.8</java.version>
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</properties>
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<dependencies>
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<dependency>
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<groupId>io.netty</groupId>
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<artifactId>netty-all</artifactId>
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<version>4.1.45.Final</version>
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</dependency>
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<dependency>
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<groupId>commons-logging</groupId>
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<artifactId>commons-logging</artifactId>
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<version>1.2</version>
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</dependency>
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<dependency>
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<groupId>org.slf4j</groupId>
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<artifactId>slf4j-api</artifactId>
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<version>1.7.25</version>
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</dependency>
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<dependency>
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<groupId>org.slf4j</groupId>
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<artifactId>slf4j-log4j12</artifactId>
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<version>1.7.25</version>
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</dependency>
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<dependency>
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<groupId>org.apache.httpcomponents</groupId>
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<artifactId>httpasyncclient</artifactId>
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<version>4.1.4</version>
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</dependency>
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<!--
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-web</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-test</artifactId>
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<scope>test</scope>
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</dependency>
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-->
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-maven-plugin</artifactId>
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</plugin>
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</plugins>
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</build>
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</project>

‎02nio/nio02/src/main/java/io/github/kimmking/gateway/NettyServerApplication.java‎

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package io.github.kimmking.gateway;
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import io.github.kimmking.gateway.inbound.HttpInboundServer;
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public class NettyServerApplication {
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public final static String GATEWAY_NAME = "NIOGateway";
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public final static String GATEWAY_VERSION = "1.0.0";
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public static void main(String[] args) {
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String proxyServer = System.getProperty("proxyServer","http://localhost:8088");
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String proxyPort = System.getProperty("proxyPort","8888");
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// http://localhost:8888/api/hello ==> gateway API
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// http://localhost:8088/api/hello ==> backend service
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int port = Integer.parseInt(proxyPort);
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System.out.println(GATEWAY_NAME + " " + GATEWAY_VERSION +" starting...");
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HttpInboundServer server = new HttpInboundServer(port, proxyServer);
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System.out.println(GATEWAY_NAME + " " + GATEWAY_VERSION +" started at http://localhost:" + port + " for server:" + proxyServer);
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try {
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server.run();
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}catch (Exception ex){
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ex.printStackTrace();
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}
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}
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}

‎02nio/nio02/src/main/java/io/github/kimmking/gateway/inbound/HttpInboundHandler.java‎

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package io.github.kimmking.gateway.inbound;
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import io.github.kimmking.gateway.outbound.httpclient4.HttpOutboundHandler;
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import io.netty.channel.ChannelHandlerContext;
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import io.netty.channel.ChannelInboundHandlerAdapter;
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import io.netty.handler.codec.http.FullHttpRequest;
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import io.netty.util.ReferenceCountUtil;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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public class HttpInboundHandler extends ChannelInboundHandlerAdapter {
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private static Logger logger = LoggerFactory.getLogger(HttpInboundHandler.class);
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private final String proxyServer;
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private HttpOutboundHandler handler;
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public HttpInboundHandler(String proxyServer) {
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this.proxyServer = proxyServer;
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handler = new HttpOutboundHandler(this.proxyServer);
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}
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@Override
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public void channelReadComplete(ChannelHandlerContext ctx) {
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ctx.flush();
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}
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@Override
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public void channelRead(ChannelHandlerContext ctx, Object msg) {
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try {
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//logger.info("channelRead流量接口请求开始，时间为{}", startTime);
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FullHttpRequest fullRequest = (FullHttpRequest) msg;
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// String uri = fullRequest.uri();
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// //logger.info("接收到的请求url为{}", uri);
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// if (uri.contains("/test")) {
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// handlerTest(fullRequest, ctx);
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// }
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handler.handle(fullRequest, ctx);
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} catch(Exception e) {
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e.printStackTrace();
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} finally {
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ReferenceCountUtil.release(msg);
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}
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}
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// private void handlerTest(FullHttpRequest fullRequest, ChannelHandlerContext ctx) {
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// FullHttpResponse response = null;
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// try {
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// String value = "hello,kimmking";
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// response = new DefaultFullHttpResponse(HTTP_1_1, OK, Unpooled.wrappedBuffer(value.getBytes("UTF-8")));
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// response.headers().set("Content-Type", "application/json");
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// response.headers().setInt("Content-Length", response.content().readableBytes());
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//
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// } catch (Exception e) {
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// logger.error("处理测试接口出错", e);
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// response = new DefaultFullHttpResponse(HTTP_1_1, NO_CONTENT);
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// } finally {
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// if (fullRequest != null) {
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// if (!HttpUtil.isKeepAlive(fullRequest)) {
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// ctx.write(response).addListener(ChannelFutureListener.CLOSE);
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// } else {
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// response.headers().set(CONNECTION, KEEP_ALIVE);
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// ctx.write(response);
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// }
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// }
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// }
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// }
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//
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// @Override
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// public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
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// cause.printStackTrace();
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// ctx.close();
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// }
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}

‎02nio/nio02/src/main/java/io/github/kimmking/gateway/inbound/HttpInboundInitializer.java‎

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package io.github.kimmking.gateway.inbound;
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import io.netty.channel.ChannelInitializer;
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import io.netty.channel.ChannelPipeline;
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import io.netty.channel.socket.SocketChannel;
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import io.netty.handler.codec.http.HttpObjectAggregator;
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import io.netty.handler.codec.http.HttpServerCodec;
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public class HttpInboundInitializer extends ChannelInitializer<SocketChannel> {
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private String proxyServer;
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public HttpInboundInitializer(String proxyServer) {
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this.proxyServer = proxyServer;
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}
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@Override
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public void initChannel(SocketChannel ch) {
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ChannelPipeline p = ch.pipeline();
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// if (sslCtx != null) {
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// p.addLast(sslCtx.newHandler(ch.alloc()));
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// }
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p.addLast(new HttpServerCodec());
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//p.addLast(new HttpServerExpectContinueHandler());
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p.addLast(new HttpObjectAggregator(1024 * 1024));
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p.addLast(new HttpInboundHandler(this.proxyServer));
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}
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}

‎02nio/nio02/src/main/java/io/github/kimmking/gateway/inbound/HttpInboundServer.java‎

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package io.github.kimmking.gateway.inbound;
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import io.netty.bootstrap.ServerBootstrap;
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import io.netty.buffer.PooledByteBufAllocator;
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import io.netty.channel.Channel;
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import io.netty.channel.ChannelOption;
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import io.netty.channel.EventLoopGroup;
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import io.netty.channel.epoll.EpollChannelOption;
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import io.netty.channel.nio.NioEventLoopGroup;
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import io.netty.channel.socket.nio.NioServerSocketChannel;
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import io.netty.handler.logging.LogLevel;
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import io.netty.handler.logging.LoggingHandler;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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public class HttpInboundServer {
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private static Logger logger = LoggerFactory.getLogger(HttpInboundServer.class);
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private int port;
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private String proxyServer;
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public HttpInboundServer(int port, String proxyServer) {
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this.port=port;
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this.proxyServer = proxyServer;
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}
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public void run() throws Exception {
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EventLoopGroup bossGroup = new NioEventLoopGroup(1);
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EventLoopGroup workerGroup = new NioEventLoopGroup(16);
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try {
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ServerBootstrap b = new ServerBootstrap();
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b.option(ChannelOption.SO_BACKLOG, 128)
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.option(ChannelOption.TCP_NODELAY, true)
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.option(ChannelOption.SO_KEEPALIVE, true)
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.option(ChannelOption.SO_REUSEADDR, true)
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.option(ChannelOption.SO_RCVBUF, 32 * 1024)
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.option(ChannelOption.SO_SNDBUF, 32 * 1024)
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.option(EpollChannelOption.SO_REUSEPORT, true)
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.childOption(ChannelOption.SO_KEEPALIVE, true)
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.option(ChannelOption.ALLOCATOR, PooledByteBufAllocator.DEFAULT);
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b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
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.handler(new LoggingHandler(LogLevel.INFO)).childHandler(new HttpInboundInitializer(this.proxyServer));
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Channel ch = b.bind(port).sync().channel();
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logger.info("开启netty http服务器，监听地址和端口为 http://127.0.0.1:" + port + '/');
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ch.closeFuture().sync();
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} finally {
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bossGroup.shutdownGracefully();
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workerGroup.shutdownGracefully();
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}
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}
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}

‎02nio/nio02/src/main/java/io/github/kimmking/gateway/outbound/netty4/NettyHttpClient.java‎

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//public class NettyHttpClient {
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// public void connect(String host, int port) throws Exception {
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// EventLoopGroup workerGroup = new NioEventLoopGroup();
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//
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//
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// try {
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// Bootstrap b = new Bootstrap();
2020
// b.group(workerGroup);
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// ch.pipeline().addLast(new HttpClientOutboundHandler());
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// }
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// });
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//
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//
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// // Start the client.
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// ChannelFuture f = b.connect(host, port).sync();
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//
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// // for test
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// URI uri = new URI("http://127.0.0.1:8844");
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// String msg = "Are you ok?";
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// DefaultFullHttpRequest request = new DefaultFullHttpRequest(HttpVersion.HTTP_1_1, HttpMethod.GET,
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// uri.toASCIIString(), Unpooled.wrappedBuffer(msg.getBytes("UTF-8")));
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//
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// // 构建http请求
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// request.headers().set(HttpHeaders.Names.HOST, host);
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// request.headers().set(HttpHeaders.Names.CONNECTION, HttpHeaders.Values.KEEP_ALIVE);
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// request.headers().set(HttpHeaders.Names.CONTENT_LENGTH, request.content().readableBytes());
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// // 发送http请求
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//
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//
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// f.channel().write(request);
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// f.channel().flush();
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// f.channel().closeFuture().sync();
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// } finally {
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// workerGroup.shutdownGracefully();
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// }
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//
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//
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// }
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//
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//
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// public static void main(String[] args) throws Exception {
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// NettyHttpClient client = new NettyHttpClient();
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// client.connect("127.0.0.1", 8844);

‎02nio/nio02/src/main/java/io/github/kimmking/gateway/outbound/okhttp/OkhttpOutboundHandler.java‎

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package io.github.kimmking.gateway.outbound.okhttp;
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public class OkhttpOutboundHandler {
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}

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