How Do I Increase the Maximum HTTP Request Size in Tomcat?

Understanding the Maximum HttpRequest Size in Tomcat

When interacting with Tomcat using HttpURLConnection, understanding the limitations on the maximum request size is critical.

What is the Default Limit?

By default, Tomcat has two potential limits that restrict the maximum size of an HTTP request:

• maxPostSize: Configured in server.xml, it determines the maximum size of POST requests (typically form data).
• maxRequestSize: Configured in web.xml for the Manager application, it specifies the maximum size of all types of HTTP requests, including POST.

How to Increase the Maximum Size

To adjust these limits, modify the following files:

• server.xml:

<code class="xml"><Connector ... maxPostSize="67589953" .../></code>

• web.xml:

<code class="xml"><multipart-config>
  <max-file-size>52428800</max-file-size>
  <max-request-size>52428800</max-request-size>
</multipart-config></code>

These values represent the maximum sizes in bytes and are equivalent to approximately 64 MB and 50 MB, respectively. To accommodate larger requests, adjust these values as needed.

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