Nginx将不同IP的请求分发到不同的WEB服务器

server {
    listen       ;
    server_name  localhost; 

    large_client_header_buffers  16k;
    client_max_body_size 300m;
    client_body_buffer_size 128k;
    proxy_connect_timeout ;
    proxy_read_timeout ;
    proxy_send_timeout ;
    proxy_buffer_size 64k;
    proxy_buffers    32k;
    proxy_busy_buffers_size 64k;
    proxy_temp_file_write_size 64k; 

    location / {
        root   html;
        index  index.html index.htm;
    } 

    location /project {
        proxy_set_header   Host    $host:$server_port;
        proxy_set_header   X-Real-IP   $remote_addr;
        proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;
        client_max_body_size    10m;
        if ($remote_addr ~ "192.168.9.138")
        {
        proxy_pass http://project1.server.com;
        break;
        }
        proxy_pass http://project2.server.com;
    } 

    error_page     /.html;
    location = /.html {
        root   html;
    }
}