Can't make it work with proxy

[kimifish]

All i see in options is --detect-proxy, no info about what, when or where it tries to detect.
Setting env vars to http_proxy=127.0.0.1:3128 or https_proxy or socks_proxy does nothing:

2024/12/09 16:36:27 [proxy.Provider.readSystemEnvProxy]: "no_proxy"="localhost,127.0.0.1,::1", targetUrl=http://0.0.0.0:50001, bypass=false                                                                                                     
W1209 16:36:28.915052 1314943 proxy.go:128] proxy failed to connect: GET http://0.0.0.0:50001/exa.api_server_pb.ApiServerService/GetCompletions giving up after 4 attempt(s): Get "http://0.0.0.0:50001/exa.api_server_pb.ApiServerService/GetCo
mpletions": EOF     

although i use that proxy every day, and it certainly works with all other apps.
Any ideas about how it could be set to work on LSP <-> API server side?
To justify the definition of the issue, I can complain about the obvious lack of documentation on this matter. =)