Add Undertow Customizer

frameworks/Java/spring/src/main/java/com/techempower/spring/SampleApplication.java

@@ -1,9 +1,16 @@
 package com.techempower.spring;
 
+import io.undertow.Undertow;
+import io.undertow.UndertowOptions;
+import org.xnio.Options;
+
 import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
 import org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration;
 import org.springframework.boot.builder.SpringApplicationBuilder;
+import org.springframework.boot.context.embedded.undertow.UndertowBuilderCustomizer;
+import org.springframework.boot.context.embedded.undertow.UndertowEmbeddedServletContainerFactory;
 import org.springframework.boot.context.web.SpringBootServletInitializer;
+import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.ComponentScan;
 import org.springframework.web.servlet.config.annotation.EnableWebMvc;
 
@@ -21,4 +28,23 @@ public class SampleApplication extends SpringBootServletInitializer {
 		new SpringApplicationBuilder(SampleApplication.class).run(args);
 	}
 
+	@Bean
+	public UndertowEmbeddedServletContainerFactory embeddedServletContainerFactory() {
+		UndertowEmbeddedServletContainerFactory factory = new UndertowEmbeddedServletContainerFactory();
+		factory.addBuilderCustomizers(new UndertowBuilderCustomizer() {
+
+			@Override
+			public void customize(Undertow.Builder builder) {
+				builder.setBufferSize(1024 * 16)
+						.setIoThreads(Runtime.getRuntime().availableProcessors() * 2)
+						.setSocketOption(Options.BACKLOG, 10000)
+						.setServerOption(UndertowOptions.ALWAYS_SET_KEEP_ALIVE, false)
+						.setServerOption(UndertowOptions.ALWAYS_SET_DATE, true)
+						.setWorkerThreads(200);
+			}
+
+		});
+		return factory;
+	}
+
 }