Could not connect to the playwright process

Describe the bug I have a working test scenario using your docker image, running robot. The same setup on a differen docker host leads to error messages

Could not connect to the playwright process

and

<_InactiveRpcError of RPC that terminated with:
	status = StatusCode.UNAVAILABLE
	details = "failed to connect to all addresses"
	debug_error_string = "{"created":"@1608286023.662143927","description":"Failed to pick subchannel","file":"src/core/ext/filters/client_channel/client_channel.cc","file_line":4165,"referenced_errors":[{"created":"@1608286023.662136260","description":"failed to connect to all addresses","file":"src/core/ext/filters/client_channel/lb_policy/pick_first/pick_first.cc","file_line":397,"grpc_status":14}]}"
>

Just in case this could be somehow related to IPv6: The working docker host has a ipv6 stack (at least /proc/sys/net/ipv6 exists), the non-working docker host does not have this key, only ipv4

Can you please give some advice how to dig deeper in that issue. How can i provide more information?

Desktop (please complete the following information):

• OS: Ubuntu 20.04, headless
• Browser [chrome]
• rfbrowser-stable:v2.4.0

[DrVanScott]

Exporting these variables

GRRPC_TRACE=all
GRPC_VERBOSITY=debug

helped me to find out the root cause. The failing docker host had been configured to export “http_proxy” variables to the containers. grpc seems to use this proxy even for localhost. Explicitly unsetting http(s)_proxy solved the problem for me.

[aaltat]

Thank you for your investigation. I guess we can close the issue now?