Strict Middleware Cannot Access Response Status Code

[humbledshuttler]

Problem

When using oapi-codegen generated strict middleware (StrictMiddlewareFunc), the response status code is not available during middleware execution.

Expected Behavior

func Telemetry(f v1.StrictHandlerFunc, operationName string) v1.StrictHandlerFunc {
    return func(ctx *gin.Context, request interface{}) (interface{}, error) {
        result, err := f(ctx, request)
        statusCode := ctx.Writer.Status() // Should return actual status (200, 404, etc.)
        // ... telemetry collection
        return result, err
    }
}

Actual Behavior

ctx.Writer.Status() always returns 0 because the response hasn't been written yet when strict middleware executes.

Root Cause

The oapi-codegen generated handlers write the response after all middleware has executed:

// Generated handler pattern
for _, middleware := range sh.middlewares {
    handler = middleware(handler, "OperationName") // Middleware runs here
}
response, err := handler(ctx, request)
// Response writing happens AFTER middleware execution
if err != nil {
    ctx.Status(http.StatusInternalServerError) // Status set here
}

Request

Could oapi-codegen provide a way for strict middleware to access the final response status code?

[zhulik]

I've just encountered the same problem. It would be super convenient to have access to the status code from the strict middlewares