How to Determine the Maximum HTTP Request Size in Tomcat?

Determining Maximum HTTP Request Size in Tomcat

When utilizing Tomcat, it's crucial to be aware of the maximum data size that can be transmitted in a single HTTP request. To answer this concern, we'll delve into the configuration settings that govern this limit.

In Tomcat's server.xml configuration file, located in the conf directory, you'll find the "Connector" element. This element includes the "maxPostSize" attribute that specifies the maximum size of HTTP POST requests in bytes. By default, Tomcat sets this value to 67589953 bytes, allowing for a maximum request size of approximately 64 MB.

Another potential limitation related to HTTP request size can be found in Tomcat's web application management interface (Manager App). The web.xml file located in webapps/manager/WEB-INF/web.xml contains a "multipart-config" element. Within this element, the "max-request-size" parameter sets the maximum size for any multipart HTTP request, which includes file uploads. The default value for this parameter is also set to 52428800 bytes, roughly equivalent to 50 MB.

Therefore, to ensure that your HTTP requests do not exceed the maximum allowable size in Tomcat, you may need to adjust the settings in both the server.xml and web.xml files to accommodate your specific requirements.

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