504 Gateway Time-out是什么意思

"504 Gateway Time-out"是什么意思? 504 Gateway Time-out 504 gateway time out ” 504 gateway time-out什么意思 请问 50 Gateway Time-out 502 Gateway Time-out什么意思 我的hao123打不开了提示：504 Gateway Time-out The server didn't respon 不知道怎么会事,我想上搜狐的博客.但一上就出现“错误:504 Gateway Time-out”这是怎么回事呀! default gateway是什么意思呢/ bad gateway是什么意思? 502 bad gateway是什么意思 解决504 Gateway Time-outThe server didn't respond in time.