ERR_CACHE_ACCESS_DENIED
ERR_CACHE_MGR_ACCESS_DENIED
ERR_CANNOT_FORWARD
-ERR_CLIENT_ABORT
ERR_CONNECT_FAIL
ERR_DNS_FAIL
+ERR_ESI
ERR_FORWARDING_DENIED
ERR_FTP_DISABLED
ERR_FTP_FAILURE
+ERR_FTP_FORBIDDEN
+ERR_FTP_NOT_FOUND
ERR_FTP_PUT_CREATED
ERR_FTP_PUT_ERROR
ERR_FTP_PUT_MODIFIED
+ERR_FTP_UNAVAILABLE
+ERR_ICAP_FAILURE
ERR_INVALID_REQ
+ERR_INVALID_RESP
ERR_INVALID_URL
ERR_LIFETIME_EXP
ERR_NO_RELAY
ERR_READ_ERROR
ERR_READ_TIMEOUT
ERR_SECURE_CONNECT_FAIL
+ERR_SHUTTING_DOWN
ERR_SOCKET_FAILURE
+ERR_TOO_BIG
ERR_UNSUP_REQ
ERR_URN_RESOLVE
ERR_WRITE_ERROR