Nginx转发(代理)http请求

nginx可以转发所有http/https的请求和响应。在配置文件配置如下代码即可：

    server {
        listen       8020;
        server_name  test;

        location / {
                proxy_buffer_size 640k;
                proxy_buffers  32 320k;
                proxy_busy_buffers_size 1280k;
                proxy_set_header Host $http_host;
                proxy_set_header X-Real-IP $remote_addr;
                proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
                proxy_set_header Upgrade $http_upgrade;
                proxy_set_header Connection keep-alive;
                add_header backendIP $upstream_addr;
                proxy_cache_bypass $http_upgrade;
                client_max_body_size 20m;
                proxy_pass http://172.12.13.14:1500/;#http服务地址，复杂需要可配置upstream
        }
    }

配置完毕后，如上所示，则可以直接访问http://127.0.0.1:8020等同于访问http://172.12.13.14:1500/

转发的时候如果不想被目标地址知道我们真实的ip可去除以下配置项：

proxy_set_header Host $http_host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
add_header backendIP $upstream_addr;