I have observed Header size issue with spring webflux 3.1.1 post spring boot upgrade but if we downgrade to springboot version 3.0.2 it is working as expected. Would appreciate help if anyone has any idea what has changed in the latest releases leading to this issue.
LOG: {"timestamp":"2023-07-26 11:00:16.104","level":"WARN","thread":"reactor-http-epoll-3","logger":"reactor.netty.http.server.HttpServerOperations","message":{"input":"[a8250b3e, L:/127.0.0.1:8080 - R:/127.0.0.1:39322] Decoding failed: REQUEST(decodeResult: failure(io.netty.handler.codec.http.TooLongHttpHeaderException: HTTP header is larger than 8192 bytes.),
Comment From: wilkinsona
The max HTTP header size defaults to 8KB (8192 bytes). A request that exceeds this should have failed with 3.0.x just as it does with 3.1.1. You haven't provided enough information for us to identify why that limit apparently isn't being applied for you with Spring Boot 3.0.2. You can use server.max-http-header-size to change the limit. If this doesn't help,
or you would like us to spend some more time investigating the behavior with 3.0.x, please spend some time providing a complete yet minimal sample that reproduces the problem. You can share it with us by pushing it to a separate repository on GitHub or by zipping it up and attaching it to this issue.
Comment From: spring-projects-issues
If you would like us to look at this issue, please provide the requested information. If the information is not provided within the next 7 days this issue will be closed.
Comment From: spring-projects-issues
Closing due to lack of requested feedback. If you would like us to look at this issue, please provide the requested information and we will re-open the issue.