client_max_body_size 500m;
client_body_buffer_size 128k;
client_header_buffer_size 8m;
proxy_connect_timeout 1800;
proxy_send_timeout 1800;
proxy_read_timeout 1800;
proxy_buffer_size 1024k;
proxy_buffers 4 1024k;
proxy_busy_buffers_size 1024k;
proxy_temp_file_write_size 1024k;
large_client_header_buffers 40 1024k;