Nuxt•4d ago

How to add HTTP headers to bundle assets

Hi everyone, I'm trying to create a template page for Azure ADB2C using Nuxt3. The HTML is requested by Azure and the authentication form is injected in a specific <div>. This is not working because of CORS errors as page and its static assets do not belong to the same domain as AD. I managed to add CORS headers to the HTML request, but I can't figure how to add such headers to bundle assets (CSS and JS). Nitro server handlers (maybe registered too late ?) and it hooks like beforeResponse are not called for static assets. Do you have any idea?

3 Replies

kapa.ai•4d ago

Hi @bgondy. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- To address your question about adding HTTP headers to bundle assets in Nuxt 3, there are a few approaches you can consider. However, it's important to note that the knowledge sources provided don't contain specific information about adding CORS headers to bundle assets in the context of Azure ADB2C integration. Nevertheless, I can offer some general guidance based on the available information. 1. Route Rules: You can use route rules in your nuxt.config.ts file to add headers to specific routes, including static assets. Here's an example:

   export default defineNuxtConfig({
     routeRules: {
       '/_nuxt/**': { headers: { 'Access-Control-Allow-Origin': '*' } },
     }
   })

   export default defineNuxtConfig({
     routeRules: {
       '/_nuxt/**': { headers: { 'Access-Control-Allow-Origin': '*' } },
     }
   })

This approach is mentioned in the Nuxt documentation on Hybrid Rendering. 2. Server Middleware: You could create a server middleware to add headers to all responses, including static assets. However, as you mentioned, this might be called too late in the process for static assets. 3. Nitro Hooks: While you mentioned that Nitro hooks like beforeResponse are not called for static assets, you might want to double-check this. According to the Nuxt documentation on Lifecycle Hooks, there are hooks like beforeResponse and afterResponse that might be useful. 4. Experimental Features: Nuxt has an experimental feature called crossOriginPrefetch that might be relevant to your CORS issues. You can enable it in your nuxt.config.ts:

   export default defineNuxtConfig({
     experimental: {
       crossOriginPrefetch: true
     }
   })

   export default defineNuxtConfig({
     experimental: {
       crossOriginPrefetch: true
     }
   })

This is mentioned in the Nuxt documentation on Experimental Features. 5. Apache Configuration: If you're using Apache as your web server, you might be able to add CORS headers at the server level. This approach is mentioned in a Stack Overflow post about Nuxt 3 Production in Apache2 with subdirectory. Given the specific context of Azure ADB2C and the CORS issues you're facing, you might need to combine multiple approaches or seek a solution that's more tailored to Azure's requirements. Unfortunately, the provided knowledge sources don't contain specific information about this particular use case. If these suggestions don't solve your problem, you might want to consult Azure's documentation for ADB2C integration with single-page applications, or reach out to Azure support for more specific guidance on handling CORS in this scenario. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•4d ago

<@180378785990836224> Kapa.ai is still learning and improving, please let me know how I did by reacting below.

bgondyOP•3d ago

Using route rules as suggested does the job.

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How to add HTTP headers to bundle assets

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