Sometime tomcat server not responding at port 8443

Tomacat server not responding at port 8443 but at the same time able to access the URL from 8080 port.
to make it work we need to restart the server. we have done lot of setting within tomcat server but ended up with no luck.

can anyone help us in getting resolved this …

Below is the error info logged into stderror log:-

07-Nov-2019 17:22:33.969 INFO [no-request] org.apache.coyote.http11.Http11Processor.service Error parsing HTTP request header
Note: further occurrences of HTTP header parsing errors will be logged at DEBUG level.
java.lang.IllegalArgumentException: Invalid character found in the request target. The valid characters are defined in RFC 7230 and RFC 3986
at org.apache.coyote.http11.Http11InputBuffer.parseRequestLine(Http11InputBuffer.java:456)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:380)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:796)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1374)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)

07-Nov-2019 20:15:54.499 INFO [Thread-30399] org.apache.coyote.AbstractProtocol.pause Pausing ProtocolHandler [“http-nio-8080”]
07-Nov-2019 20:15:54.577 INFO [Thread-30399] org.apache.coyote.AbstractProtocol.pause Pausing ProtocolHandler [“https-openssl-nio-0.0.0.0-8443”]
07-Nov-2019 20:15:54.639 INFO [Thread-30399] org.apache.coyote.AbstractProtocol.pause Pausing ProtocolHandler [“ajp-nio-8009”]
07-Nov-2019 20:15:54.702 INFO [Thread-30399] org.apache.catalina.core.StandardService.stopInternal Stopping service [Catalina]

Simple answer - do not use Tomcat for SSL. Instead use a frontend server like Nginx.

Furthermore, this has nothing to do with Razuna but with Tomcat itself.