Http Error Code Temporarily Unavailable
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Pin Email daitoZen / Getty Images Internet & Network Error Messages Basics by Tim Fisher Updated February 23, 2016 The 503 http status codes cheat sheet Service Unavailable error is an HTTP status code that means the web site's server is simply not available right now.Are You the Webmaster? See the Fixing 503 Errors on Your Own Site section further
Http 404
down the page for some things to look at if you're not sure what to do.A 503 error message can be customized by the website it appears on, or the server software that generates it, so the ways in which you might see it vary greatly. How You Might See the 503 ErrorHere are the most common ways you might see the "service unavailable" error:"503 Service Unavailable""503 Service Temporarily http 502 Unavailable""Http/1.1 Service Unavailable""HTTP Server Error 503""Service Unavailable - DNS Failure""503 Error""HTTP 503""HTTP Error 503""Error 503 Service Unavailable"503 Service Unavailable errors can appear in any browser in any operating system, including Windows 10 back through Windows XP, Mac OS, Linux, etc.... even your smartphone or other nontraditional computer. If it has Internet access, then you could see a 503 in certain situations.The 503 Service Unavailable error displays inside the browser window, just as web pages do.Cause of 503 Service Unavailable ErrorsMost of the time, a 503 error occurs because the server is too busy or because there's maintenance being performed on it.Note: Sites that use Microsoft IIS may provide more specific information about the cause of a 503 Service Unavailable error by suffixing a number after the 503 as in HTTP Error 503.2 - Service Unavailable which means Concurrent request limit exceeded. See More Ways You MIght See a 503 Error near the bottom of the page for the whole list.How To Fix the 503 Service Unavailable ErrorThe 503 Service Unavailable error is a server-side error, meaning the problem is usually with the web site's server. It's possible that your computer is having some kind of problem that's causing the 503 error but it's not likely. Regardless,
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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 http 422 minute: Sign up HTTP status code for temporarily unavailable pages up vote 32 down vote favorite 3 I'm redesigning my small business' website. I will be putting up a temporarily 'under construction' splash page. I know, I know... but it will http://www.thebeautyhavenchorleywood.co.uk/ be one in style, I hope. :) What, mostly for SEO purposes, is the best HTTP status code to dish out for the URLs that will be temporarily unavailable (the same URLs will have content again, after the new site is up). Now, my website traffic is hardly of any importance, but as a webdeveloper I want this knowledge in my toolbox for possible future client projects. And what better way to test and experiment with this, now that I have a convenient http://stackoverflow.com/questions/4642923/http-status-code-for-temporarily-unavailable-pages 'reason' with my own website. Here's a few I thought about: 503 looks appealing, but is in the category of server errors. 204 looks appealing as well, but I'd rather temporarily redirect to the splash page. 307 looks like the best choice, but I'm not entirely sure. There are a few others as well. So I'm curious to hear your advice. Thanks http http-status-codes share|improve this question edited Sep 23 '11 at 14:53 Sathya 13.2k1667106 asked Jan 10 '11 at 1:08 Decent Dabbler 13.7k44285 add a comment| 1 Answer 1 active oldest votes up vote 56 down vote accepted I disagree to the selected answer. I would use the 503 code. According to the RFC for HTTP/1.1: 503 Service Unavailable The server is currently unable to handle the request due to a temporary overloading or maintenance of the server. The implication is that this is a temporary condition which will be alleviated after some delay. Yes, it should be an error, because the expected page will not appear. share|improve this answer edited May 26 at 20:08 Community♦ 11 answered Apr 16 '13 at 13:13 Jan Siqueira 781711 7 Note this is not claimed just by wikipedia. This interpretation actually comes from the RFC - tools.ietf.org/html/rfc2616#section-10.5.4 –yaccz May 31 '13 at 13:16 Yes, you are right. And I've just checked: Wikipedia points that link as the source for many statements. –Jan Siqueira Jun 5 '13 at 12:40 12 Google suggests 503 too
response. 10.1 Informational 1xx This class of status code indicates a provisional response, consisting only of the Status-Line and optional headers, and is terminated by an empty line. There are no required headers for this class of status code. Since https://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html HTTP/1.0 did not define any 1xx status codes, servers MUST NOT send a 1xx response http://www.checkupdown.com/status/E503.html to an HTTP/1.0 client except under experimental conditions. A client MUST be prepared to accept one or more 1xx status responses prior to a regular response, even if the client does not expect a 100 (Continue) status message. Unexpected 1xx status responses MAY be ignored by a user agent. Proxies MUST forward 1xx responses, unless the connection between the proxy and http status its client has been closed, or unless the proxy itself requested the generation of the 1xx response. (For example, if a proxy adds a "Expect: 100-continue" field when it forwards a request, then it need not forward the corresponding 100 (Continue) response(s).) 10.1.1 100 Continue The client SHOULD continue with its request. This interim response is used to inform the client that the initial part of the request has been received and has not yet http status code been rejected by the server. The client SHOULD continue by sending the remainder of the request or, if the request has already been completed, ignore this response. The server MUST send a final response after the request has been completed. See section 8.2.3 for detailed discussion of the use and handling of this status code. 10.1.2 101 Switching Protocols The server understands and is willing to comply with the client's request, via the Upgrade message header field (section 14.42), for a change in the application protocol being used on this connection. The server will switch protocols to those defined by the response's Upgrade header field immediately after the empty line which terminates the 101 response. The protocol SHOULD be switched only when it is advantageous to do so. For example, switching to a newer version of HTTP is advantageous over older versions, and switching to a real-time, synchronous protocol might be advantageous when delivering resources that use such features. 10.2 Successful 2xx This class of status code indicates that the client's request was successfully received, understood, and accepted. 10.2.1 200 OK The request has succeeded. The information returned with the response is dependent on the method used in the request, for example: GET an entity corresponding to the requested resource is sent in the response; HEAD the entity-header fields corresponding to the requested resource ar
that this is a temporary condition which will be alleviated after some delay. Some servers in this state may also simply refuse the socket connection, in which case a different error may be generated because the socket creation timed out. Fixing 503 errors The Web server is effectively 'closed for repair'. It is still functioning minimally because it can at least respond with a 503 status code, but full service is impossible i.e. the Web site is simply unavailable. There are a myriad possible reasons for this, but generally it is because of some human intervention by the operators of the Web server machine. You can usually expect that someone is working on the problem, and normal service will resume as soon as possible. Please contact the system operators of the Web site (e.g. your ISP) to determine why the service is down. They will be in a much better position to help you than we are for this type of error. 503 errors in the HTTP cycle Any client (e.g. your Web browser or our CheckUpDown robot) goes through the following cycle when it communicates with the Web server: Obtain an IP address from the IP name of the site (the site URL without the leading 'http://'). This lookup (conversion of IP name to IP address) is provided by domain name servers (DNSs). Open an IP socket connection to that IP address. Write an HTTP data stream through that socket. Receive an HTTP data stream back from the Web server in response. This data stream contains status codes whose values are determined by the HTTP protocol. Parse this data stream for status codes and other useful information. This error occurs in the final step above when the client receives an HTTP status code that it recognises as '503'. Our company also owns these other Web sites: A simple guide to software escrow. Our really simple guide to web hosting (getting your web site and email addresses on the Internet using your own domain name). Convert text to image file (GIF, JPG, PNG etc.) Free to use. Tips if you want to buy a valuable Internet domain name.