HTTP请求状态码汇总,加粗的比较常见:
httpStatusCodes :
100: "Continue",
101: "Switching Protocols",
200: "OK",
201:...,
302: "Found",
303: "See Other",
304: "Not Modified",
305: "Use Proxy",
307: "Temporary Redirect",
400...501: "Not Implemented",
502: "Bad Gateway",
503: "Service Unavailable",
504: "Gateway Timeout",
505: "HTTP