Add dedicated settings for maxHttpPostSize

This commit deprecates `server.max-http-post-size` and introduces a
dedicated property for each supported  container. In particular, Undertow
can now define a max size higher than 2GB.

Closes gh-7362

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/ServerProperties.java

@@ -362,12 +362,18 @@ public class ServerProperties
 		this.maxHttpHeaderSize = maxHttpHeaderSize;
 	}
 
+	@Deprecated
+	@DeprecatedConfigurationProperty(reason = "Use dedicated property for each container.")
 	public int getMaxHttpPostSize() {
 		return this.maxHttpPostSize;
 	}
 
+	@Deprecated
 	public void setMaxHttpPostSize(int maxHttpPostSize) {
 		this.maxHttpPostSize = maxHttpPostSize;
+		this.jetty.setMaxHttpPostSize(maxHttpPostSize);
+		this.tomcat.setMaxHttpPostSize(maxHttpPostSize);
+		this.undertow.setMaxHttpPostSize(maxHttpPostSize);
 	}
 
 	protected final boolean getOrDeduceUseForwardHeaders() {
@@ -645,6 +651,11 @@ public class ServerProperties
 		 */
 		private int minSpareThreads = 0; // Minimum spare threads in protocol handler
 
+		/**
+		 * Maximum size in bytes of the HTTP post content.
+		 */
+		private int maxHttpPostSize = 0; // bytes
+
 		/**
 		 * Maximum size in bytes of the HTTP message header.
 		 */
@@ -697,6 +708,14 @@ public class ServerProperties
 			this.minSpareThreads = minSpareThreads;
 		}
 
+		public int getMaxHttpPostSize() {
+			return this.maxHttpPostSize;
+		}
+
+		public void setMaxHttpPostSize(int maxHttpPostSize) {
+			this.maxHttpPostSize = maxHttpPostSize;
+		}
+
 		public Accesslog getAccesslog() {
 			return this.accesslog;
 		}
@@ -815,8 +834,8 @@ public class ServerProperties
 			if (maxHttpHeaderSize > 0) {
 				customizeMaxHttpHeaderSize(factory, maxHttpHeaderSize);
 			}
-			if (serverProperties.getMaxHttpPostSize() > 0) {
+			if (this.maxHttpPostSize > 0) {
-				customizeMaxHttpPostSize(factory, serverProperties.getMaxHttpPostSize());
+				customizeMaxHttpPostSize(factory, this.maxHttpPostSize);
 			}
 			if (this.accesslog.enabled) {
 				customizeAccessLog(factory);
@@ -1116,6 +1135,11 @@ public class ServerProperties
 
 	public static class Jetty {
 
+		/**
+		 * Maximum size in bytes of the HTTP post or put content.
+		 */
+		private int maxHttpPostSize = 0; // bytes
+
 		/**
 		 * Number of acceptor threads to use.
 		 */
@@ -1126,6 +1150,14 @@ public class ServerProperties
 		 */
 		private Integer selectors;
 
+		public int getMaxHttpPostSize() {
+			return this.maxHttpPostSize;
+		}
+
+		public void setMaxHttpPostSize(int maxHttpPostSize) {
+			this.maxHttpPostSize = maxHttpPostSize;
+		}
+
 		public Integer getAcceptors() {
 			return this.acceptors;
 		}
@@ -1155,8 +1187,8 @@ public class ServerProperties
 				customizeMaxHttpHeaderSize(factory,
 						serverProperties.getMaxHttpHeaderSize());
 			}
-			if (serverProperties.getMaxHttpPostSize() > 0) {
+			if (this.maxHttpPostSize > 0) {
-				customizeMaxHttpPostSize(factory, serverProperties.getMaxHttpPostSize());
+				customizeMaxHttpPostSize(factory, this.maxHttpPostSize);
 			}
 
 			if (serverProperties.getConnectionTimeout() != null) {
@@ -1266,6 +1298,11 @@ public class ServerProperties
 
 	public static class Undertow {
 
+		/**
+		 * Maximum size in bytes of the HTTP post content.
+		 */
+		private long maxHttpPostSize = 0; // bytes
+
 		/**
 		 * Size of each buffer in bytes.
 		 */
@@ -1294,6 +1331,14 @@ public class ServerProperties
 
 		private final Accesslog accesslog = new Accesslog();
 
+		public long getMaxHttpPostSize() {
+			return this.maxHttpPostSize;
+		}
+
+		public void setMaxHttpPostSize(long maxHttpPostSize) {
+			this.maxHttpPostSize = maxHttpPostSize;
+		}
+
 		public Integer getBufferSize() {
 			return this.bufferSize;
 		}
@@ -1366,8 +1411,8 @@ public class ServerProperties
 				customizeMaxHttpHeaderSize(factory,
 						serverProperties.getMaxHttpHeaderSize());
 			}
-			if (serverProperties.getMaxHttpPostSize() > 0) {
+			if (this.maxHttpPostSize > 0) {
-				customizeMaxHttpPostSize(factory, serverProperties.getMaxHttpPostSize());
+				customizeMaxHttpPostSize(factory, this.maxHttpPostSize);
 			}
 
 			if (serverProperties.getConnectionTimeout() != null) {
@@ -1404,13 +1449,13 @@ public class ServerProperties
 
 		private void customizeMaxHttpPostSize(
 				UndertowEmbeddedServletContainerFactory factory,
-				final int maxHttpPostSize) {
+				final long maxHttpPostSize) {
 			factory.addBuilderCustomizers(new UndertowBuilderCustomizer() {
 
 				@Override
 				public void customize(Builder builder) {
 					builder.setServerOption(UndertowOptions.MAX_ENTITY_SIZE,
-							(long) maxHttpPostSize);
+							maxHttpPostSize);
 				}
 
 			});

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/ServerPropertiesTests.java

@@ -310,7 +310,9 @@ public class ServerPropertiesTests {
 		Map<String, String> map = new HashMap<String, String>();
 		map.put("server.maxHttpPostSize", "9999");
 		bindProperties(map);
-		assertThat(this.properties.getMaxHttpPostSize()).isEqualTo(9999);
+		assertThat(this.properties.getJetty().getMaxHttpPostSize()).isEqualTo(9999);
+		assertThat(this.properties.getTomcat().getMaxHttpPostSize()).isEqualTo(9999);
+		assertThat(this.properties.getUndertow().getMaxHttpPostSize()).isEqualTo(9999);
 	}
 
 	@Test
@@ -476,6 +478,35 @@ public class ServerPropertiesTests {
 				.getProtocolHandler()).getMaxConnections()).isEqualTo(5);
 	}
 
+	@Test
+	public void customTomcatMaxHttpPostSize() {
+		Map<String, String> map = new HashMap<String, String>();
+		map.put("server.tomcat.max-http-post-size", "10000");
+		bindProperties(map);
+
+		TomcatEmbeddedServletContainerFactory container = new TomcatEmbeddedServletContainerFactory();
+		this.properties.customize(container);
+		TomcatEmbeddedServletContainer embeddedContainer = (TomcatEmbeddedServletContainer) container
+				.getEmbeddedServletContainer();
+		assertThat(embeddedContainer.getTomcat().getConnector().getMaxPostSize())
+				.isEqualTo(10000);
+	}
+
+	@Test
+	@Deprecated
+	public void customTomcatMaxHttpPostSizeWithDeprecatedProperty() {
+		Map<String, String> map = new HashMap<String, String>();
+		map.put("server.max-http-post-size", "2000");
+		bindProperties(map);
+
+		TomcatEmbeddedServletContainerFactory container = new TomcatEmbeddedServletContainerFactory();
+		this.properties.customize(container);
+		TomcatEmbeddedServletContainer embeddedContainer = (TomcatEmbeddedServletContainer) container
+				.getEmbeddedServletContainer();
+		assertThat(embeddedContainer.getTomcat().getConnector().getMaxPostSize())
+				.isEqualTo(2000);
+	}
+
 	@Test
 	public void customizeUndertowAccessLog() {
 		Map<String, String> map = new HashMap<String, String>();

spring-boot-docs/src/main/asciidoc/appendix-application-properties.adoc

@@ -154,11 +154,11 @@ content into your application; rather pick only the properties that you need.
 	server.context-path= # Context path of the application.
 	server.display-name=application # Display name of the application.
 	server.max-http-header-size=0 # Maximum size in bytes of the HTTP message header.
-	server.max-http-post-size=0 # Maximum size in bytes of the HTTP post content.
 	server.error.include-stacktrace=never # When to include a "stacktrace" attribute.
 	server.error.path=/error # Path of the error controller.
 	server.error.whitelabel.enabled=true # Enable the default error page displayed in browsers in case of a server error.
 	server.jetty.acceptors= # Number of acceptor threads to use.
+	server.jetty.max-http-post-size=0 # Maximum size in bytes of the HTTP post or put content.
 	server.jetty.selectors= # Number of selector threads to use.
 	server.jsp-servlet.class-name=org.apache.jasper.servlet.JspServlet # The class name of the JSP servlet.
 	server.jsp-servlet.init-parameters.*= # Init parameters used to configure the JSP servlet
@@ -213,6 +213,7 @@ content into your application; rather pick only the properties that you need.
 			172\\.2[0-9]{1}\\.\\d{1,3}\\.\\d{1,3}|\\
 			172\\.3[0-1]{1}\\.\\d{1,3}\\.\\d{1,3} # regular expression matching trusted IP addresses.
 	server.tomcat.max-connections= # Maximum number of connections that the server will accept and process at any given time.
+	server.tomcat.max-http-post-size=0 # Maximum size in bytes of the HTTP post content.
 	server.tomcat.max-threads=0 # Maximum amount of worker threads.
 	server.tomcat.min-spare-threads=0 # Minimum amount of worker threads.
 	server.tomcat.port-header=X-Forwarded-Port # Name of the HTTP header used to override the original port value.
@@ -231,6 +232,7 @@ content into your application; rather pick only the properties that you need.
 	server.undertow.buffers-per-region= # Number of buffer per region.
 	server.undertow.direct-buffers= # Allocate buffers outside the Java heap.
 	server.undertow.io-threads= # Number of I/O threads to create for the worker.
+	server.undertow.max-http-post-size=0 # Maximum size in bytes of the HTTP post content.
 	server.undertow.worker-threads= # Number of worker threads.
 
 	# FREEMARKER ({sc-spring-boot-autoconfigure}/freemarker/FreeMarkerAutoConfiguration.{sc-ext}[FreeMarkerAutoConfiguration])