Add Access-Control-Allow-Origin to API Gateway based on Nginx

[giulioroggero]

To setup it you can use the Advanced section in Console/Project/Design and configuring the following files

server-extension.conf

location /api/ {
    # Allow CORS
    add_header 'Access-Control-Allow-Origin' '*';
    add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS, PATCH';
    add_header 'Access-Control-Allow-Headers' 'accept, authorization, content-type, origin, x-requested-with, user-agent, access-control-allow-origin, DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Authorization';
    

    # Respond to preflight requests
    if ($request_method = 'OPTIONS') {
         add_header 'Access-Control-Allow-Origin' '*';
        add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS, PATCH';
        add_header 'Access-Control-Allow-Headers' 'accept, authorization, content-type, origin, x-requested-with, user-agent, access-control-allow-origin, DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Authorization';
        add_header 'Access-Control-Max-Age' 60000;
        add_header 'Access-Control-Allow-Credentials' 'true';
        add_header 'Content-Type' 'text/plain; charset=utf-8';
        add_header 'Content-Length' 0;
        return 204; # No Content
    }

    add_header 'Access-Control-Allow-Credentials' 'true';
    proxy_pass http://crud-service$proxy_url;
    proxy_set_header Host $host; 
    proxy_set_header X-Real-IP $remote_addr; 
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; 
    proxy_set_header X-Forwarded-Proto $scheme;
}

upstreams.conf

upstream crud-service {
    server crud-service:80; # Replace with the address and port of your CRUD service
}

change crud-service with your microservice

[giulioroggero]

Do you know how to do the same with envoy api-gateway?