IllegalArgumentException when trying to use Tomcat's HttpNio2Protocol with Spring Boot-configured SSL

[automvc]

Httpl1Nio2Protocol can work with springboot3.0.13, but have exception in v3.1,v3.2,v3.3.
exception is:
SslStoreProvider can only be used with Http11NioProtocol: org.apache.coyote.httpl1.Httpl1Nio2Protocol
use Http11NioProtocol is ok.
what 's the reason and solution ?

[wilkinsona]

I'm not sure I understand the question. Can you please provide a minimal example that works with Spring Boot 3.0.x and then fails when upgraded to 3.2.x?

[automvc]

Thanks Wilkinsona.
Here is a minimal example. in springboot 3.0.13, Http11Nio2Protocol and Http11NioProtocol can work. But in 3.3.0 just Http11NioProtocol is ok.

@Configuration
public class TomcatConnectorConfig {

//	public static final String PROTOCOL = "org.apache.coyote.http11.Http11Nio2Protocol";
	public static final String PROTOCOL = "org.apache.coyote.http11.Http11NioProtocol"; //ok in 3.3.0
	
	//... some fields
	
	@Bean
	public org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory servletContainer() {

		// Create Tomcat Web server factory with pre-defined setting
		TomcatServletWebServerFactory tomcat = new TomcatServletWebServerFactory() {
		};
	
		tomcat.addAdditionalTomcatConnectors(getHttpConnector());
		tomcat.setProtocol(PROTOCOL);
		tomcat.addConnectorCustomizers(new TomcatConnectorCustomizer() {
			@Override
			public void customize(Connector connector) {
				ProtocolHandler protocol = connector.getProtocolHandler();
				AbstractHttp11Protocol abstractHttp11Protocol = ((AbstractHttp11Protocol) protocol);

				abstractHttp11Protocol.setMaxConnections(maxConnection);
				abstractHttp11Protocol.setMaxThreads(maxThread);
				abstractHttp11Protocol.setMinSpareThreads(minThread);
				abstractHttp11Protocol.setKeepAliveTimeout(keepAliveTimeout);
				abstractHttp11Protocol.setConnectionTimeout(connectionTimeout);
				
			}
		});

		return tomcat;
	}
	
	private Connector getHttpConnector() {
		// Set default http protocol
		Connector connector = new Connector(PROTOCOL);
		connector.setScheme("http");
		connector.setSecure(false);

		connector.setPort(443);
		connector.setRedirectPort(80);
		
		return connector;
	}
}

[wilkinsona]

Thank you. I've reproduced the problem now. All that's necessary is a single connector using Spring Boot-configured SSL and Tomcat configured to use its HttpNio2Protocol.