HTTP Error Codes Reference The jargon of the web has added many new words and terms to the English language.... way too many! - it's hard to keep up with the terminology, definition and explanations. We've all hit those pages that give us mysterious error messages, so what do they mean? Below is a brief explanation of various HTTP Error codes. If you would like to decipher other information technologies terminology, try out our comprehensive glossary search box, located at: http://www.tamingthebeast.net/seng/whatis.htm Code Number Error Message Description
400 Bad Request The request could not be understood by the server due to incorrect syntax.
401 Unauthorized User authentication is required.
403 Forbidden The server understood the request, but is refusing to fulfill it.
404 Page Not Found The server has not found anything matching the Request-URI.
405 Method Not Allowed The method specified in the Request-Line is not allowed for the resource identified by the Request-URI.
406 Not Acceptable The server cannot generate a response that the requestor is willing to accept.
407 Proxy Authentication Required This code is similar to 401 (Unauthorized), but indicates that the client must first authenticate itself with the proxy.
408 Request Timed Out The server stopped waiting for a client request.
409 Conflict The request could not be completed due to a conflict with the current state of the resource.
410 Gone The requested resource is no longer available at the server and no forwarding address is known. This condition is similar to 404, except that the 410 error condition is expected to be permanent.
411. Length Required The server requires a content-length in the request
412 Precondition Failed The precondition given in one or more of the request-header fields evaluated to false when it was tested on the server.
413 Request Entity Too Large The server is refusing to process a request because the request entity is larger than the server is willing or able to process.
414 Request URL Too Long The server is refusing to service the request because the Request-URI is longer than the server is willing to interpret.
415 Unsupported Media Type The server is refusing to service the request because the entity of the request is in a format not supported by the requested resource for the requested method.
500 Server Error Internal Web server error
501 No Server Function not implemented in Web server software
502 Server Overload Bad Gateway; a server being used by this Web server has sent an invalid response.
503 Service Unavailable Service unavailable because of temporary overload or maintenance.
504 Gateway Timeout A server being used by this server has not responded in time.
505 HTTP Version Not Supported The server does not support the HTTP protocol version that was used in the request message.
| DISCLAIMER: The content provided in this article is not warranted or guaranteed by Developer Shed, Inc. The content provided is intended for entertainment and/or educational purposes in order to introduce to the reader key ideas, concepts, and/or product reviews. As such it is incumbent upon the reader to employ real-world tactics for security and implementation of best practices. We are not liable for any negative consequences that may result from implementing any information covered in our articles or tutorials. If this is a hardware review, it is not recommended to open and/or modify your hardware. |
More How To Articles
More By Developer Shed  developerWorks - FREE Tools!
|
Attend this launch webcast with Scott Hebner, Vice President of IBM Rational Marketing and Strategy, for an overview of Rational’s new software offerings and resources to help modernize and accelerate software innovation on i on Power Systems – while ensuring past application investments are protected and continue to grow. Learn how these solutions are helping customers extend their core i5/OS solutions toward modern architectures such as SOA and web technologies to deliver business improvements that stand the test of time.
FREE! Go There Now!
| | | |
Visit IBM developerWorks to download a free trial version of Lotus Quickr 8.0, which enables collaboration by transforming the way everyday business content such as documents, rich media, photos, and video can be shared. Lotus Quickr makes it faster and easier to share content of all types (not just documents) within virtual teams. It is designed to make it easier to collaborate across organizational boundaries, while continuing to work within the context of familiar desktop applications.
FREE! Go There Now!
| | | |
Visit IBM developerWorks to download IBM DB2 Express-C 9.5, a no-charge version of DB2 Express 9 database server. DB2 Express-C offers the same core data server base features as other DB2 Express editions and provides a solid base to build and deploy applications developed using C/C++, Java, .NET, PHP, and other programming languages.
FREE! Go There Now!
| | | |
Download a free trial version of IBM Rational Software Analyzer Developer Edition V7.0 to identify bug defects earlier in the software development cycle. Rational Software Analyzer is an extensible software development solution that reduces the expense of bug-fixes by enabling static analysis code reviews and bug identification very early in the development cycle.
FREE! Go There Now!
| | | |
Visit IBM developerWorks to download a free trial of the Rational Host Access Transformation Services (HATS) Toolkit. The HATS toolkit provides a set of plug-ins for the IBM Rational Software Delivery Platform to help you easily extend your legacy applications. HATS makes your 3270 and 5250 applications available as HTML through the most popular Web browsers, while converting your host screens to a Web look and feel and it also enables you to develop new Web, portal, and rich-client applications.
FREE! Go There Now!
| | | |
Visit IBM developerWorks to download a free trial version of WebSphere Extended Deployment Compute Grid, which lets you schedule, execute, and monitor batch jobs. Because online transaction processing and batch jobs execute simultaneously on the same server resources, you can avoid costly duplication of resources. Compute Grid supports job types of Java transactional batch, compute-intensive and a new type called "native execution", which enables non-Java workloads to run on distributed end points.
FREE! Go There Now!
| | | |
Manage, govern, and share services across your organization by using WebSphere Service Registry and Repository. Follow the hands-on exercises to learn how to navigate the Web interface to publish, find, reuse, and update services.
FREE! Go There Now!
| | | |
Rational Modeling Extension for Microsoft .NET enhances usability for code generation supporting a more intelligent refactoring. The latest enhancements enable organizations with Java and .NET systems and software development maintain architectural integrity across heterogeneous platforms.
FREE! Go There Now!
| | | |
Visit IBM developerWorks to try the IBM SOA Sandbox for process. The SOA Sandbox for process focuses on providing a trial environment with the necessary tooling and components required to gain a better understanding of business processes and how to best improve existing business processes to derive value quickly.
FREE! Go There Now!
| | | |
Viper 2 brings a great value to developer communities including SQL, XML, PHP, Ruby, .NET and Java. You probably already know that DB2 Express-C is free for developers to develop, deploy and distribute. Viper 2 provides a variety of means that help move your application from the development stage to deployment more rapidly. This webcast shows how to best utilize the latest tools available for developing DB2 applications.
FREE! Go There Now!
| | | |
All FREE IBM® developerWorks Tools!
| |
