I was trying to execute the JMeter jmx scripts in Microsoft Visual Team Services (VSTS), The scripts were working fine when executed using JMeter tool[GUI as well Non-GUI mode] but when tried to execute the same in VSTS, I was facing the below mentioned issues,
1) Non HTTP response message: Connection refused: connect – For localhost application,
2) Non HTTP response code: java.net.UnknownHostException – When used to run using IP address.
It looks like you're trying to test application deployed locally from Internet. Make sure you're using public IP address instead of private, you can determine it using service like What Is My IP?, however you need to ensure your application is not behind NAT and VSTS host(s) can reach it. It might be also a matter of firewall configuration preventing inbound connections from VSTS hosts(s).
See Top 3 Options for Running Performance Tests Behind Your Corporate Firewall article for more information and possible solutions.
