VS Code Server Download for AML Incosistent

[sevillal]

SSL connection dropped by az764295.vo.msecnd.net server or any intermediary.

[sevillal]

Asked customer to trace the network calls to determine which server is dropping the SSL connecition.

[sevillal]

Issue

Customer is trying to connect to Azure ML Compute instance but intermittently failing to download VS Code Server bits

Triage

• Met with customer and detected 'wget' for the resource was timing out. Customer would check with their network team to allow the required endpoints in their firewall.
• After fixing the firewall but now customer is experiencing failures with SSL
• CI team confirmed is not an issue with the target
• Customer reports the issue is present in multiple CIs
• Triage SSL: “openssl s_client -connect az764295.vo.msecnd.net:443 -debug" shows "write:errno=104", seem like connection is being drop by server or intermediary https://superuser.com/questions/297889/does-openssl-errno-104-mean-that-sslv2-is-disabled
• "openssl version" version supports TLS 1.2
• Asked the customer to trace their network to identify where the connection was dropped

[sevillal]

Closing this for now since we have not heard from the customer.