AkousaHTTP Status CodesInfo
203203 Non-Authoritative Information
The response has been modified by a transforming proxy and differs from what the origin server sent.
browsernodeserver
View details 19 error codes tagged with "proxy"
203The response has been modified by a transforming proxy and differs from what the origin server sent.
305The requested resource must be accessed through the proxy specified in the Location header. This status code is deprecated.
407The client must first authenticate with the proxy before the request can be forwarded to the target server.
502A gateway or proxy server received an invalid response from the upstream server.
504A gateway or proxy server did not receive a timely response from the upstream server.
520Cloudflare received an unexpected or empty response from the origin server.
521The origin web server has refused the connection from Cloudflare.
502 Bad GatewayNginx received an invalid response from the upstream server.
504 Gateway TimeoutNginx timed out waiting for a response from the upstream server.
upstream timed outNginx timed out while waiting for the upstream server to respond.
connect() failed (111: Connection refused)Nginx could not connect to the upstream server.
upstream prematurely closed connectionThe upstream server closed the connection before sending a complete response.
host not found in upstreamNginx could not resolve the hostname specified in the upstream block.
no live upstreams while connecting to upstreamAll upstream servers in the pool are marked as unavailable.
an upstream response is buffered to a temporary fileThe upstream response is being buffered to disk because it exceeds memory buffers.
upstream sent too big header while reading response header from upstreamThe upstream server sent response headers larger than Nginx's buffer.
no servers are inside upstreamThe upstream block has no servers defined.
ERR_PROXY_CONNECTION_FAILEDThe connection to the proxy server could not be established.
ERR_TUNNEL_CONNECTION_FAILEDThe CONNECT tunnel through a proxy server could not be established.