Custom Http Error
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Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: http error 500 Sign up Can we create custom HTTP Status codes? up vote 44 down vote favorite 23 I have a REST and WCF service and want to send a custom status code based on the operation. Example when some validation fails then i want to send HTTP 444 and when authorization fails i want to send HTTP 455 The question is how do we http error 400 have it validated for both SOAP and REST web services. On the client how does the error code act because when you send a HTTP 400/500 from a WCF Service (using SOAP) an exception is throw on the client showing the status code. Now if i send a new custom status code how does the client handle this? c# asp.net wcf http wcf-rest share|improve this question asked Nov 3 '11 at 14:28 Rajesh 5,82031126 2 Is this a service you're exposing to the world, or do you control all the clients too? –Rup Nov 3 '11 at 14:59 add a comment| 4 Answers 4 active oldest votes up vote 61 down vote Yes, as long as you respect the class -- that is, 2xx for success, 4xx for Client error, etc. So you can return custom 4XX error codes (preferably those that are unassigned) for your own application's error conditions. To quote from RFC 2616: "HTTP status codes are extensible. HTTP applications are not required to understand the meaning of all registered status codes, though such understanding is obviously desirable. However, applications MUST underst
generic error responses in the event of 4xx or 5xx HTTP
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status codes, these responses are rather stark, uninformative, and can be http protocol error intimidating to site users. You may wish to provide custom error responses which are either friendlier,
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or in some language other than English, or perhaps which are styled more in line with your site layout. Customized error responses can be defined for any http://stackoverflow.com/questions/7996569/can-we-create-custom-http-status-codes HTTP status code designated as an error condition - that is, any 4xx or 5xx status. Additionally, a set of values are provided, so that the error document can be customized further based on the values of these variables, using Server Side Includes. Or, you can have error conditions handled by a cgi program, or https://httpd.apache.org/docs/2.4/custom-error.html other dynamic handler (PHP, mod_perl, etc) which makes use of these variables. Configuration Available Variables Customizing Error Responses Multi Language Custom Error Documents See alsoComments Configuration Custom error documents are configured using the ErrorDocument directive, which may be used in global, virtualhost, or directory context. It may be used in .htaccess files if AllowOverride is set to FileInfo. ErrorDocument 500 "Sorry, our script crashed. Oh dear" ErrorDocument 500 /cgi-bin/crash-recover ErrorDocument 500 http://error.example.com/server_error.html ErrorDocument 404 /errors/not_found.html ErrorDocument 401 /subscription/how_to_subscribe.html The syntax of the ErrorDocument directive is: ErrorDocument <3-digit-code>
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codes -- http://jproulx.github.io/node-http-error Install npm install http-custom-errors Usage var HTTPErrors = require('http-custom-errors');var error = HTTPErrors.createHTTPError(500); // Create a "500 Internal Server Error" exception throw new HTTPErrors.NotFoundError('/missing'); // Throw a "404 Not Found Error" exception The createHTTPError(code); function export will inherit and return a new error exception, with the additional code and status fields that correspond to the HTTP Server Statuses advertised by node's internal HTTP module. One practical use would allow you to use a polymorphic error handler with express.js: app.use(function (err, res, req, next) { res.status(err.code || 500); // respond with html page if (req.accepts('html')) { return res.render(err.code || 500, { url: req.url }); } // respond with json if (req.accepts('json')) { res.send({ 'message' : err.message || 'Server Error' }); return; } // default to plain-text. send() res.type('txt').send(err.message || 'Server Error');}); With this middleware you would be able to simply throw the appropriate HTTP status error in the right situation: function authorize (req, res, next) { if (// not authorized logic) { return next(new HTTPErrors.ForbiddenError('Please log in')); } return next();});app.get('/sensitive', authorize, function (req, res, next) { return res.render('logged_in');});app.use(function (req, res, next) { throw new HTTPErrors.NotFoundError(req.url);}); Additionally, each error type is exposed as its own Error constructor: HTTPErrors.BadRequestError(message); HTTPError