总结 1. 502没有收到相应,或者收到了但不及时? cannot get a response in time 540收到了无效的响应 received an invalid response from the upstream server, HTTP/1.1: Status Code Definitions https://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10 10.5 Server Error 5xx Response
1 /* 2 Copyright (c) 2009-2012 Roger Light <roger@atchoo.org> 3 All rights reserved. 4 5 Redistribution and use in source and binary forms, with or without 6 modification, are permitted provided that the following conditions are met: 7 8 1. Redistri