title: Unable to execute HTTP request : Couldn't Kickstart Handshaking
body: <p>I am trying to hit my Spring Boot Server(2.1.4) with 500 user threads using JMeter(5.0). while trying this I got the error in JMeter log file which is about 1% of the Samples. Spring Boot server is connecting to aws services .</p>
  
  <blockquote>
    <p>Unable to execute HTTP request : Couldn't Kickstart Handshaking </p>
  </blockquote>
  
  <p>Both the JMeter and SpringBoot Server is Running on AWS EC2 instance (m5a.2xlarge)</p>
  
  <p>Note: When I run Jmeter and Spring Boot Server in different instance Error got reduced to 0.1% </p>
  
  <ul>
  <li>JDK - openjdk version 11</li>
  </ul>
  
  <p><img src="https://i.stack.imgur.com/lTZiE.jpg" alt="while logging in the spring boot server we got this Exception Details"></p>
  
  <p>This shows aws sdkclient exception.Do we need to change anything awsclient configuration or its problem with our spring boot-server?</p>