Web Server Error Messages: Server Error And Connection Error.

In the last article I had mentioned about the Client Error in context of Web server

error .Now in this article I will let you know about the Server error i.e. the error made by the service provider. Sometime it also happen that web server is aware about the error encountered by it or web server is unable to provide the services. This type of error is can be recognized by the first digit of Web server error code. If the first digit is 5 then it is Server error. The Client errors are listed below:

500 Internal Server Error: This error message indicates that sever couldn't retrieve the HTML document because of server-configuration problems. Contact site administrator.

501 Not Implemented: This error code is generated when the server is not able to recognize the request method or unable to fulfill the resource specified in the users request.

502 Bad Gateway: The server was acting as a gateway or proxy and received an invalid response from the upstream server.

503 Service Unavailable: The server is currently unavailable because it is overloaded or down for maintenance.

504 Gateway Timeout: The server was acting as a gateway or proxy and did not receive a timely response from the upstream server.

505 HTTP Version Not Supported: The server does not support the HTTP protocol version used in the request for resource.

506 Variant Also Negotiates: This error code is generated when resource requested by user is not able to serve different versions of a document.

507 Insufficient Storage: This error code is generated when the server is unable to store the representation to store to complete the request.

508 Loop Detected: This error code is generated when an infinite loop is detected while processing the request.

510 Not Extended: This error code generated when further extensions to the request are required for the server to fulfill it.

511 Network Authentication Required: The client needs to authenticate gaining network access. Intended for use by intercepting proxies used to control access to the network.

Connection Error: This type of error occur when user/client is not able to establish a with connection web server. As internet connection is not established so web server is not able to send any web server error code. But they only send a brief description which contains the reason why connection is not established. There are following types of connection error:

Invalid URL: This message is generated when the format of URL entered by user is not correct. It may contain incorrect domain name, spelling mistake etc.

Host Not Found: This type of error occur when web server is not able to establish connection with the specified host/domain name. This error is caused due to problem with your DNS system.

Time Out: This type of error occurs when web server is not able to establish connection with host computer within predetermined limit. Generally the limit for time out is 90 sacs. This error indicates problems with your routers or a web server hardware failure.

Connection Refused: This type of error is caused when the web servers host computer is found, but the host computer refuses to accept the connection request.

No Response from Web Server: This type of error occur when a connection between host and web server is established but a web server is not able to response in predetermined time

Unexpected Error: This type of error message is displayed when an error occurs and monitoring system is not able to classify error into the above category. This error is very rare.

Thus the above mentioned error information let you diagnose the problem and solve them with ease. If you know about these errors then you eliminate it without any computer repair services from any expert.

by: Matthew Ferrall

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