HTTP Status 505 – HTTP Version Not Supported

Type Exception Report

Message Invalid character found in the HTTP protocol

Description The server does not support, or refuses to support, the major version of HTTP that was used in the request message.

Exception

java.lang.IllegalArgumentException: Invalid character found in the HTTP protocol
	org.apache.coyote.http11.Http11InputBuffer.parseRequestLine(Http11InputBuffer.java:547)
	org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:684)
	org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
	org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:808)
	org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1498)
	org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	java.lang.Thread.run(Thread.java:750)

Note The full stack trace of the root cause is available in the server logs.

HTTP Status 505 – HTTP Version Not Supported

Apache Tomcat/8.5.43