12建网站,最简单的网页制作,网站设计制作哪家好,惠州市网站建设公司0. 目录 1. 需求背景2. 实现3. 额外 - 其它Servlet容器实现3.1 Undertow3.2 Tomcat 4. 相关 1. 需求背景
浏览器针对单个网站地址(ipport)存在“6个请求”限制#xff1b;通过多子域配置可以突破这个限制#xff0c;增加网站的响应效率#xff0c;尤其是针对三维服务这类大… 0. 目录 1. 需求背景2. 实现3. 额外 - 其它Servlet容器实现3.1 Undertow3.2 Tomcat 4. 相关 1. 需求背景
浏览器针对单个网站地址(ipport)存在“6个请求”限制通过多子域配置可以突破这个限制增加网站的响应效率尤其是针对三维服务这类大请求量服务。
注意
多子域的目的是为了突破浏览器6个请求的限制(【浏览器请求并发限制】与后端应用提供的业务功能无关。这个配置项的底层实现原理其实就是为当前网站增加几个访问端口比如除了原始的123端口之外还可以通过456777端口访问仅此而已没有任何业务功能上的变化和影响。浏览器对于同一个网址采取的是 ip port 的组合认定只有两者都相同才会认定为同一个网站这也是通过开放多个端口就可以突破该项限制的原因。
2. 实现
本项功能需求的应用场景比较窄因此这里直接给出解决方案不做原理性解读。
以下三个类拷贝到项目中即可。
// 1/3 MultiportNettyWebServer
// 组合模式
public class MultiportNettyWebServer implements WebServer {private final ListNettyWebServer servers;public MultiportNettyWebServer(ListNettyWebServer servers) {this.servers servers;}Overridepublic void start() throws WebServerException {servers.stream().forEach(server - server.start());}Overridepublic void shutDownGracefully(GracefulShutdownCallback callback) {servers.stream().forEach(server - server.shutDownGracefully(callback));}Overridepublic void stop() throws WebServerException {servers.stream().forEach(server - server.stop());}Overridepublic int getPort() {return -1;}}// 2/3 MultiportNettyReactiveWebServerFactory
public class MultiportNettyReactiveWebServerFactory extends NettyReactiveWebServerFactory {Overridepublic WebServer getWebServer(HttpHandler httpHandler) {NettyWebServer webServer (NettyWebServer)super.getWebServer(httpHandler);ListNettyWebServer newArrayList CollUtil.newArrayList(webServer);// 这里并不是原地修改, 生效的是方法的返回值对象; 所以这里还得塞回去...// 这个思路其实很好, 保证对象的不可变....HttpServer httpServer Convert.convert(HttpServer.class, ReflectUtil.getFieldValue(webServer, httpServer));httpServer httpServer.port(81);ReflectUtil.setFieldValue(webServer, httpServer, httpServer);webServer (NettyWebServer)super.getWebServer(httpHandler);newArrayList.add(webServer);httpServer Convert.convert(HttpServer.class, ReflectUtil.getFieldValue(webServer, httpServer));httpServer httpServer.port(82);ReflectUtil.setFieldValue(webServer, httpServer, httpServer);return new MultiportNettyWebServer(newArrayList);}
}// 3/3 MultiportNettyReactiveWebServerFactory
/*** COPY FROM {code ReactiveWebServerFactoryConfigurationEmbeddedNetty}*/
Configuration
public class MultiportNettyWebServerConfig {BeanConditionalOnMissingBeanReactorResourceFactory reactorServerResourceFactory() {return new ReactorResourceFactory();}BeanNettyReactiveWebServerFactory nettyReactiveWebServerFactory(ReactorResourceFactory resourceFactory,ObjectProviderNettyRouteProvider routes, ObjectProviderNettyServerCustomizer serverCustomizers) {NettyReactiveWebServerFactory serverFactory new MultiportNettyReactiveWebServerFactory();serverFactory.setResourceFactory(resourceFactory);routes.orderedStream().forEach(serverFactory::addRouteProviders);serverFactory.getServerCustomizers().addAll(serverCustomizers.orderedStream().collect(Collectors.toList()));return serverFactory;}}3. 额外 - 其它Servlet容器实现
3.1 Undertow
Slf4j
Configuration
ConditionalOnClass({Servlet.class, Undertow.class, SslClientAuthMode.class})
// 参考自: ServletWebServerFactoryConfiguration.EmbeddedUndertow.java
public class WebServerMultiPortConfigByUndertow implements WebServerFactoryCustomizerUndertowServletWebServerFactory {/*** 多个端口*/Overridepublic void customize(UndertowServletWebServerFactory factory) {if (ArrayUtil.isEmpty(multiports)) {log.warn(### there is no multi-port config. so skip it);return;}final String[] finalMultiports new String[]{81, 82};factory.addBuilderCustomizers(s - {log.warn(### 启用Undertow容器, 配置多端口 [ {} ], Arrays.toString(finalMultiports));Arrays.stream(finalMultiports).forEach(port - s.addHttpListener(Convert.toInt(port), 0.0.0.0));});}
}
3.2 Tomcat
Slf4j
Configuration
// 参考自: ServletWebServerFactoryConfiguration.EmbeddedTomcat.java
ConditionalOnClass({ Servlet.class, Tomcat.class, UpgradeProtocol.class })
public class WebServerMultiPortConfigByTomcat implements WebServerFactoryCustomizerTomcatServletWebServerFactory {/*** 多个端口*/Overridepublic void customize(TomcatServletWebServerFactory factory) {factory.addAdditionalTomcatConnectors(addtionalConnetors());}private Connector[] addtionalConnetors() {final String[] multiPorts new String[]{81, 82};log.warn(### 启用Tomcat容器, 配置多端口 [ {} ], Arrays.toString(multiPorts));ListConnector connectors new ArrayList();for (String s : multiPorts) {Connector connector new Connector(HTTP/1.1);connector.setPort(Integer.parseInt(s));connector.setScheme(http);connectors.add(connector);}return connectors.toArray(new Connector[] {});}
}4. 相关
【浏览器请求并发限制】Spring Boot中为Tomcat配置多个监听端口
