e1f098b9b7
This PR introduces an `--upstream-url` option to the proxy CLI that
determines the URL that Responses API requests should be forwarded to.
To preserve existing behavior, the default value is
`"https://api.openai.com/v1/responses"`.
The motivation for this change is that the [Codex GitHub
Action](https://github.com/openai/codex-action) should support those who
use the OpenAI Responses API via Azure. Relevant issues:
- https://github.com/openai/codex-action/issues/28
- https://github.com/openai/codex-action/issues/38
- https://github.com/openai/codex-action/pull/44
Though rather than introduce a bunch of new Azure-specific logic in the
action as https://github.com/openai/codex-action/pull/44 proposes, we
should leverage our Responses API proxy to get the _hardening_ benefits
it provides:
d5853d9c47/codex-rs/responses-api-proxy/README.md (hardening-details)
This PR should make this straightforward to incorporate in the action.
To see how the updated version of the action would consume these new
options, see https://github.com/openai/codex-action/pull/47.