Copilot Proxy Support

[JustinGrote]

The copilot proxy exposed by the Github Copilot CLI is https://copilot-proxy.githubusercontent.com/

The completion URI follows the same similar contexts and I imagine it will work fine here:
https://copilot-proxy.githubusercontent.com/v1/engines/copilot-labs-codex/completions

I'm pretty sure it just proxies an Azure ML model based on the headers, so I propose adding a new provider type that is either:

1. Copilot Specific
2. Allow to specify an arbitrary base domain that isn't Azure-based.

[kayhantolga]

you can always set your custom basedomain, library support this functionality. However, the links you sent don't work also I didn't understand quite well what you meant 🤔 .
If you can provide me some documentation links, I can add support.

https://github.com/betalgo/openai/blob/master/OpenAI.SDK/OpenAiOptions.cs
If you need any help with setting a custom base domain, just let me know.

[JustinGrote]

I think I misread how this works:

openai/OpenAI.SDK/OpenAiOptions.cs

Lines 85 to 90 in d32a9a8

	return _baseDomain ??= ProviderType switch
	{
	ProviderType.OpenAi => OpenAiDefaultBaseDomain,
	ProviderType.Azure => ResourceName == null ? null : $"https://{ResourceName}.openai.azure.com/",
	_ => throw new ArgumentOutOfRangeException(nameof(ProviderType))
	};

However when I tried to set a basedomain for copilot I got an invalid URL error, I'll see if I can debug it to find what URL it was attempting.

[kayhantolga]

Do you know Where can I find documentation for co-pilot? Also, do you have any sample basedomain for copilot?

[JustinGrote]

It's basically a private API on the backend, but it uses the same completions API as AzureML. here's an example implementation:
https://github.com/copilotplayground/CopilotDev.NET

[kayhantolga]

I don't think the current implementation would work with it. You may need to write a custom endpoint provider.
https://github.com/betalgo/openai/tree/master/OpenAI.SDK/EndpointProviders