• DISCONNECT_FULL : Passenger::EventedClient
• DISCONNECT_WRITE : Passenger::EventedClient
• HEADER_TERMINATOR_EXPECTED : Passenger::ScgiRequestParser
• INVALID_HEADER_DATA : Passenger::ScgiRequestParser
• INVALID_LENGTH_STRING : Passenger::ScgiRequestParser
• LENGTH_STRING_TOO_LARGE : Passenger::ScgiRequestParser
• LIMIT_REACHED : Passenger::ScgiRequestParser