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fix: optimize Codex relay #2826

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Merged
seefs001 merged 1 commit into from
Feb 5, 2026
Merged

fix: optimize Codex relay #2826

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16 changes: 16 additions & 0 deletions relay/channel/codex/adaptor.go
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Original file line number Diff line number Diff line change
Expand Up @@ -90,6 +90,12 @@ func (a *Adaptor) ConvertOpenAIResponsesRequest(c *gin.Context, info *relaycommo
}
}
}
// Codex backend requires the `instructions` field to be present.
// Keep it consistent with Codex CLI behavior by defaulting to an empty string.
if len(request.Instructions) == 0 {
request.Instructions = json.RawMessage(`""`)
}

if isCompact {
return request, nil
}
Expand Down Expand Up @@ -172,5 +178,15 @@ func (a *Adaptor) SetupRequestHeader(c *gin.Context, req *http.Header, info *rel
req.Set("originator", "codex_cli_rs")
}

// chatgpt.com/backend-api/codex/responses is strict about Content-Type.
// Clients may omit it or include parameters like `application/json; charset=utf-8`,
// which can be rejected by the upstream. Force the exact media type.
req.Set("Content-Type", "application/json")
if info.IsStream {
req.Set("Accept", "text/event-stream")
} else if req.Get("Accept") == "" {
req.Set("Accept", "application/json")
}

return nil
}