[hotfix] Caddy CORS #62
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WalkthroughThe Caddy server configuration files for local and production environments were updated to add CORS support for API endpoints. This includes setting HTTP headers for allowed origins, methods, and headers, and handling CORS preflight OPTIONS requests by returning a 204 status with appropriate headers. Changes
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Summary of Changes
Hello @gocanto, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!
This pull request introduces essential CORS (Cross-Origin Resource Sharing) configurations to the Caddy web server setup. The primary goal is to enable a separate frontend application to securely communicate with the backend API by allowing cross-origin requests and properly handling preflight OPTIONS requests. This ensures that both local development and production deployments can function correctly with a decoupled frontend.
Highlights
- CORS Configuration: Implemented Cross-Origin Resource Sharing (CORS) headers in Caddy for both local development and production environments to allow secure cross-origin requests.
- Preflight Request Handling: Added specific handling for browser preflight
OPTIONSrequests, configuring Caddy to respond with a 204 No Content status, which is crucial for modern web applications. - Local Development Support: Configured CORS in
Caddyfile.localto allow requests fromhttp://localhost:5173, supporting local Vue application development. - Production Environment Support: Configured CORS in
Caddyfile.prodspecifically for the/api/*path, allowing requests fromhttps://oullin.ioin the production environment.
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Code Review
This pull request adds CORS headers to the Caddy configurations for both local and production environments to allow cross-origin requests from the frontend application. The changes are straightforward and should resolve the immediate CORS issue.
My review includes a couple of suggestions to improve the robustness of the implementation:
- The preflight
OPTIONSrequest handler should be more specific to only match actual CORS preflight requests. - I've also noted the potential need for
Access-Control-Allow-Credentialsif your application uses cookies or other forms of credentials.
These changes will make your CORS configuration more secure and correct.
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Actionable comments posted: 0
🧹 Nitpick comments (1)
caddy/Caddyfile.local (1)
16-20: Consider scoping CORS headers to API endpoints only.The CORS headers are applied globally to all requests in the local environment, which may not be necessary. Consider moving these headers inside a
handle_path /api/*block to match the production configuration and avoid exposing CORS headers for static assets.- header { - Access-Control-Allow-Origin "http://localhost:5173" # allows the Vue app (running on localhost:5173) to make requests. - Access-Control-Allow-Methods "GET, POST, PUT, DELETE, OPTIONS" # Specifies which methods are allowed. - Access-Control-Allow-Headers "X-API-Key, X-API-Username, X-API-Signature, Content-Type, User-Agent" # allows the custom headers needed by the API. - } + handle_path /api/* { + header { + Access-Control-Allow-Origin "http://localhost:5173" # allows the Vue app (running on localhost:5173) to make requests. + Access-Control-Allow-Methods "GET, POST, PUT, DELETE, OPTIONS" # Specifies which methods are allowed. + Access-Control-Allow-Headers "X-API-Key, X-API-Username, X-API-Signature, Content-Type, User-Agent" # allows the custom headers needed by the API. + } + + @preflight { + method OPTIONS + } + + respond @preflight 204 + + reverse_proxy api:8080 + }
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📒 Files selected for processing (2)
caddy/Caddyfile.local(1 hunks)caddy/Caddyfile.prod(1 hunks)
🔇 Additional comments (3)
caddy/Caddyfile.prod (2)
34-38: CORS headers configuration looks correct.The CORS headers are properly configured for production with appropriate restrictions:
- Origin limited to the specific production domain
- Methods restricted to necessary HTTP verbs
- Headers allow required API authentication headers
40-44: Preflight handling implementation is correct.The preflight OPTIONS request handling is properly implemented:
- Named matcher correctly identifies OPTIONS requests
- Returns appropriate 204 No Content status
- Positioned before the reverse_proxy directive to avoid unnecessary backend calls
caddy/Caddyfile.local (1)
23-27: Preflight handling is correctly implemented.The preflight OPTIONS request handling follows the same pattern as production and is properly positioned before the reverse_proxy directive.
Summary by CodeRabbit