After Clarity PPM Upgrade, "Error parsing HTTP request header" for App and NSA

Products

• Clarity PPM On Premise
• Clarity PPM SaaS

Issue/Introduction

After upgrading, Error parsing HTTP request header is seen in both the nsa.system.logs and app-system.logs.

We are not able to connect

Error message:
2020/05/23 05:50:32.506 | INFO: Error parsing HTTP request header
2020/05/23 05:50:32.506 |  Note: further occurrences of HTTP header parsing errors will be logged at DEBUG level.
2020/05/23 05:50:32.506 | java.lang.IllegalArgumentException: Invalid character found in method name. HTTP method names must be tokens

Environment

Release : Any

Resolution

Check CSA or properties.xml to ensure the sslType is matching the server setup. I.e. if both HTTP and HTTPS ports are enabled, the sslType should be set to "both"