Error Parsing HTTP Request Header: 3 Ways You Can Fix it

Using the wrong protocol can cause this problem

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Published onJune 19, 2024

published onJune 19, 2024

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When developing and using Tomcat, you might often encounter Error parsing HTTP request header. This error will prevent your project from running, but it can be fixed.

How can I fix the Error parsing HTTP request header?

Before we start, make sure that your server is configured to handle HTTPS requests. Also, ensure that you’re accessing the server using the right protocol, so try HTTPS instead of HTTP and vice versa.

1. Remove the listener

2. Modify application.properties

You can also set the max header size by adding one of the following lines:server.max-http-header-size=64kbserver.maxHttpHeaderSize = 102400

This solution works if you’re using SpringBoot.

3. Modify the application.yml file

This solution also applies to SpringBoot.

This error message can prevent your application from working correctly, but in most cases, it can be fixed by switching from HTTP or HTTPS or vice versa.

In web development, HTTP errors are fairly common, and we coveredHTTP error 431andHTTP error 413in previous guides.

Before you go, we also have a guide onHTTP error 302that might interest you. Did you manage to fix theError parsing HTTP request headermessage? Share with us the solution that worked for you.

Error Parsing HTTP Request Header: 3 Ways You Can Fix it#

How can I fix the Error parsing HTTP request header?#

1. Remove the listener#

2. Modify application.properties#

3. Modify the application.yml file#

Error Parsing HTTP Request Header: 3 Ways You Can Fix it

How can I fix the Error parsing HTTP request header?

1. Remove the listener

2. Modify application.properties

3. Modify the application.yml file