Http Error Codes Common
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6, 2009 in Tech blog Sometimes when you try to visit web page, you’re met with an HTTP error message. It’s a message from the web server that something went wrong. In some fundamental pieces of an http request/response pair cases it could be a mistake you made, but often it’s the site’s
Http Code 403
fault. Each type of error has an HTTP error code dedicated to it. For example, if you try to access a http code 302 non-existing page on a website, you will be met by the familiar 404 error. Now, you might wonder, which are the most common HTTP errors that people encounter when they surf the Web? That
Http Status Codes Cheat Sheet
is the question we’ll answer in this article. Google to the rescue Why not let millions of Web users tell us themselves what errors they encounter the most? In an indirect way we can do that via Google. The basic idea here is that some of the people who encounter errors when they visit websites will want to know more about that error, and will go to the nearest http response example search engine to do so. In short, Google’s search statistics should in this case be able to give us a pretty good idea of which HTTP errors are most common. Using Google Insights for Search (a great tool for estimating the “popularity” of search terms) we went through all of the different HTTP error codes that exist, comparing them against each other. When the dust settled from this little shootout, we had the top list you can see here below. The top 5 errors, according to Google Here they are, listed and explained in reverse order, the five most common HTTP errors. Drumroll, please… 5. HTTP error 401 (unauthorized) This error happens when a website visitor tries to access a restricted web page but isn’t authorized to do so, usually because of a failed login attempt. 4. HTTP error 400 (bad request) This is basically an error message from the web server telling you that the application you are using (e.g. your web browser) accessed it incorrectly or that the request was somehow corrupted on the way. 3. HTTP error 403 (forbidden) This error is similar to the 401 error, but note the difference between unauthorized and forbidden. In this case no login opportu
referer DNT X-Forwarded-For Status codes 301 Moved Permanently 302 Found 303 See Other 403 Forbidden 404 Not Found 451 Unavailable For Legal Reasons v t e This is a list
Http 422
of Hypertext Transfer Protocol (HTTP) response status codes. It includes codes from IETF
Http 502
internet standards, other IETF RFCs, other specifications, and some additional commonly used codes. The first digit of the status http 404 code specifies one of five classes of response; an HTTP client must recognise these five classes at a minimum. The phrases used are the standard wordings, but any human-readable alternative can be http://royal.pingdom.com/2009/05/06/the-5-most-common-http-errors-according-to-google/ provided. Unless otherwise stated, the status code is part of the HTTP/1.1 standard (RFC 7231).[1] The Internet Assigned Numbers Authority (IANA) maintains the official registry of HTTP status codes.[2] Microsoft IIS sometimes uses additional decimal sub-codes to provide more specific information,[3] but not all of those are here (note that these sub-codes only appear in the response payload and in documentation; not in the https://en.wikipedia.org/wiki/List_of_HTTP_status_codes place of an actual HTTP status code). Contents 1 1xx Informational 2 2xx Success 3 3xx Redirection 4 4xx Client Error 5 5xx Server Error 6 Unofficial codes 6.1 Internet Information Services 6.2 nginx 6.3 Cloudflare 7 See also 8 Notes 9 References 10 External links 1xx Informational[edit] Request received, continuing process. 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. Since HTTP/1.0 did not define any 1xx status codes, servers must not[note 1] send a 1xx response to an HTTP/1.0 client except under experimental conditions.[4] 100 Continue The server has received the request headers and the client should proceed to send the request body (in the case of a request for which a body needs to be sent; for example, a POST request). Sending a large request body to a server after a request has been rejected for inappropriate headers would be inefficient. To have a server check the request's headers, a client must send Expect: 100-continue as a header in its initial request and receive a 100 Continue status code in response bef
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 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 http code proxy and 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 http error codes not yet 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 t