ini 示例Nginx配置，用于为反向代理API添加跨源资源共享（CORS）支持

Posted 2021-05-24

#
# CORS header support
#
# One way to use this is by placing it into a file called "cors_support"
# under your Nginx configuration directory and placing the following
# statement inside your **location** block(s):
#
#   include cors_support;
#
# As of Nginx 1.7.5, add_header supports an "always" parameter which
# allows CORS to work if the backend returns 4xx or 5xx status code.
#
# For more information on CORS, please see: http://enable-cors.org/
# Forked from this Gist: https://gist.github.com/michiel/1064640
#

set $cors '';
if ($http_origin ~ '^https?://(localhost|www\.yourdomain\.com|www\.yourotherdomain\.com)') {
        set $cors 'true';
}

if ($cors = 'true') {
        add_header 'Access-Control-Allow-Origin' "$http_origin" always;
        add_header 'Access-Control-Allow-Credentials' 'true' always;
        add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS' always;
        add_header 'Access-Control-Allow-Headers' 'Accept,Authorization,Cache-Control,Content-Type,DNT,If-Modified-Since,Keep-Alive,Origin,User-Agent,X-Requested-With' always;
        # required to be able to read Authorization header in frontend
        #add_header 'Access-Control-Expose-Headers' 'Authorization' always;
}

if ($request_method = 'OPTIONS') {
        # Tell client that this pre-flight info is valid for 20 days
        add_header 'Access-Control-Max-Age' 1728000;
        add_header 'Content-Type' 'text/plain charset=UTF-8';
        add_header 'Content-Length' 0;
        return 204;
}

ini NGINX配置示例，用于为Node进程提供自己的配置

  ~ cat /etc/nginx/sites-available/example.com   

# HTTP - redirect all requests to HTTPS:
server {
    listen 80;
    listen [::]:80;
    server_name example.com www.example.com;
    # listen [::]:80 ipv6only=on;
    return 301 https://$server_name$request_uri;
}

# HTTPS - proxy requests on to local Node.js app:
server {
    
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name example.com www.example.com;
    
    error_log /var/log/nginx/example.com.error.log;
    access_log /var/log/nginx/example.com.access.log;
    
    ssl on;
    underscores_in_headers on;
    
    # Use certificate and key provided by Let's Encrypt:
    ssl_certificate /etc/letsencrypt/live/example.com/fullchain.pem; # managed by Certbot
    ssl_certificate_key /etc/letsencrypt/live/example.com/privkey.pem; # managed by Certbot
    
    # See https://gist.github.com/wesleybliss/01ceeda5a3b59cc1542b915a901e1600
    include snippets/ssl-params.conf;
    
    location / {
        
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-NginX-Proxy true;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_pass http://127.0.0.1:1234; # Any port you want here
        proxy_http_version 1.1;
        proxy_ssl_session_reuse off;
        proxy_cache_bypass $http_upgrade;
        proxy_redirect off;
        
    }
    
}