We've hit Error code 502 when running a REST POST request on a "Add a Rest response" window during creating a REST Integration connector. On the other hand, we've got a normal response from the REST service on a remote system with a common REST Client: ARC on Chrome browser.

I couldn't find any messages on a pega log.

 I feel if we need to set a proxy server setting on Pega8.2.2.  I've tested if the remote system REST service builds correct or not. So I utilized a REST client software: ARC and then got fine result.  When I activate the ARC software on my laptop, the laptop has a proxy setting.

What are the steps to reproduce the issue:

 1, New REST Integration window  2, "Data model" tab  3, select "Add a REST response" link  4, fill in values on the the "Add a REST response" pop-up window  5, tap "Run" botton for getting a REST response from a remote system which serves REST POST service.  6, unfortunately we see "502" code on a response tab.