Requesting guidance on "Direct XDR Edge Test Tool - Sandbox - Send XDR messages from the Sandbox to your System."

[Julia Drahozal]

Hello,My team and I need guidance on connectivity between the ETT and our endpoint.Firstly, when sending to our endpoint in the Sandbox, our load balancer returns the error "HTTP 400 - 400 The plain HTTP request was sent to HTTPS port"So it seems the Sandbox is sending traffic to us under HTTP instead of HTTPS, but all of the tests within B1 require HTTPS traffic. This relates to my second question: For XDR Test 8 Under b1 Paragraph (i)(B) Receive using Edge Protocol - XDR, we are trying to validate the mTLS handshake, but the tool immediately fails and just says "ran tc 8."My team cannot validate the mTLS handshake because

1. the sandbox seems to be ignoring TLS/HTTPS entirely
2. the XDR Test 8 does not give a helpful error message