https://bz.apache.org/bugzilla/show_bug.cgi?id=65565
Bug ID: 65565 Summary: Tomcat responds with HTTP status code 503 with response body upstream connect error or disconnect/reset before headers. reset reason: remote refused stream reset Product: Tomcat 9 Version: 9.0.52 Hardware: All OS: All Status: NEW Severity: blocker Priority: P2 Component: WebSocket Assignee: dev@tomcat.apache.org Reporter: juhigupta...@gmail.com Target Milestone: ----- Hello, I have following configuration setup in my production environment: Java Application with following configuration: 1. Sprint boot server version 2.5.4 2. Tomcat version 9.0.52 3. Inside our Application we have enabled HTTP 2 version by using following bean code ``` @Bean public TomcatConnectorCustomizer customizer() { return (connector) -> connector.addUpgradeProtocol(new Http2Protocol()); } ``` 4. All the other Spring boot and Tomcat configuration/properties are default 5. Running this Application as docker container (using base image of alpine) on cloud in which we have installed tomcat-native which has following libs https://pkgs.alpinelinux.org/contents?branch=edge&name=tomcat-native&arch=x86&repo=community Issue faced: When the client call this java application, it receives HTTP status code 503 with response body as "upstream connect error or disconnect/reset before headers. reset reason: remote refused stream reset" They happen almost 2-3 times in an hour with normal load We didnt get these errors while using HTTP 1 but have started to notice this issue when we upgraded Tomcat to use HTTP 2 We also enabled internal logs for tomcat to be printed by using these application property logging.level.org.apache.tomcat=ERROR logging.level.org.apache.catalina=ERROR but no additional information was printed out when we get this error. -- You are receiving this mail because: You are the assignee for the bug. --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@tomcat.apache.org For additional commands, e-mail: dev-h...@tomcat.apache.org