ASM JMeter script is failing with a “Connection Reset” java socket exception.

Products

• CA App Synthetic Monitor
• DX Application Performance Management

Issue/Introduction

 

We are experiencing a problem where our ASM JMeter script fails with a “Connection Reset” java socket exception.  This started after making changes. Due to security issues, we added a WAF in front of the online.foo.com site.  We are using a service from F5 called Silverline.  We have whitelisted every ASM station with Silverline and we expect the scripts to still execute normally, but they are not. 

Environment

Release : 10.1

Component : CA APP SYNTHETIC MONITOR (WATCHMOUSE)

Cause

Per Engineering,  the WAF is doing its job - blocking requests from automated agents like JMeter, to prevent a distributed denial-of-service (DDoS) attack. 

Resolution

The solution is to use Webdriver monitor instead of Script, because it's indistinguishable from the regular browser.