[499错误](dyhjw.error.log/499%E9%94%99%E8%AF%AF.md) [recv()](dyhjw.error.log/recv.md) [recv() failed](dyhjw.error.log/recvfailed.md) [recv() failed-第3种](dyhjw.error.log/recvfailed-%E7%AC%AC3%E7%A7%8D.md) [no live upstreams](dyhjw.error.log/noliveupstreams.md) [upstream prematurely](dyhjw.error.log/upstreamprematurely.md) [cache_file_has_too_long_header](dyhjw.error.log/cache_file_has_too_long_header.md) [FastCGI sent in stderr](dyhjw.error.log/FastCGIsentinstderr.md) [directory index of is forbidden](dyhjw.error.log/directoryindexofisforbidden.md) [recv() failed-第4种](dyhjw.error.log/recvfailed-%E7%AC%AC4%E7%A7%8D.md)