Hello, I've discovered an interesting issue where POST requests fail when uploading a file over about ~6MB if the server ignores the request content.
I've put together a simple project to reproduce it: https://github.com/leonatherton/tomcat-request-issue Serverside code: https://github.com/leonatherton/tomcat-request-issue/blob/master/src/main/java/DemoServlet.java Clientside code: https://github.com/leonatherton/tomcat-request-issue/blob/master/src/main/webapp/index.html If you'd like to try it yourself there are a couple of pre-built war files on the releases page, and there are steps to reproduce in the README.md file. The problem does not occur when uploading a small file, and the problem can be "fixed" by simply getting a parameter from the request object. It reproduces in Tomcat 8 & 9. The problem does not reproduce on Payara, but I am seeing similar on Jetty. My guess is that the server responds before the client has finished uploading the file. The browsers see the incomplete upload and report this as an error, despite content being sent in response. And my guess is that inspecting a request parameter causes the server to wait for the full upload before sending the response. It's a slightly odd workflow, but it's not too unreasonable to sometimes respond early and ignore the request content. Is this expected behavior, or a bug in Tomcat? Thanks! Leon --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
