location ^~ /nexus {

    proxy_pass http://x.x.x.x:8080/nexus;

    sendfile off;

    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 https; # 转发时使用https协议
    proxy_max_temp_file_size 0;

    # This is the maximum upload size
    client_max_body_size    20m;
    client_body_buffer_size  128k;

    proxy_connect_timeout   90;
    proxy_send_timeout     90;
    proxy_read_timeout     90;

    proxy_temp_file_write_size 64k;

    # Required for new HTTP-based CLI
    proxy_http_version 1.1;
    proxy_request_buffering off;
    proxy_buffering off; # Required for HTTP-based CLI to work over SSL
  }