Bad Request Syntax Error
Contents |
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads http 400 bad request fix with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the the request could not be understood by server due to malformed syntax. 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: what does malformed syntax mean Sign up HTTP 400 (bad request) for logical error, not malformed request syntax up vote 50 down vote favorite 16 The HTTP/1.1 specification (RFC 2616) has the following to say on the meaning of status code 400, Bad Request (§10.4.1): The request http error 400 bad request could not be understood by the server due to malformed syntax. The client SHOULD NOT repeat the request without modifications. There seems to be a general practice among a few HTTP-based APIs these days to use 400 to mean a logical rather than a syntax error with a request. My guess is that APIs are doing this to distinguish between 400 (client-induced) and 500 (server-induced). Is it acceptable or incorrect to use 400 to indicate non-syntactic errors? If it is acceptable, is there
Http 400 Bad Request Internet Explorer
an annotated reference on RFC 2616 that provides more insight into the intended use of 400? Examples: Google Data Protocol, Protocol Reference, HTTP Status Codes http http-status-codes http-status-code-400 share|improve this question edited Jan 24 '11 at 18:17 asked Jan 24 '11 at 11:00 Atif Aziz 22.9k145165 Why should a web server care about syntax errors? –leppie Jan 24 '11 at 11:03 @leppie: The web server needs to make sure, for example, that the request line and headers are well-formed. –Atif Aziz Jan 24 '11 at 12:01 But that would be a malformed client request. –leppie Jan 24 '11 at 12:02 1 @leppie: A client can always send a malformed request. It's clear that a server would respond with a 400 in that case. What's unclear is whether a 400 is a legitimate response to a well-formed yet invalid (per application) request. –Atif Aziz Jan 24 '11 at 12:22 1 @Atif Aziz: If the request can be passed to some backing server, then it should have a 500 error, except for well-known client errors like authentication failed or 404. –leppie Jan 24 '11 at 12:24 | show 2 more comments 6 Answers 6 active oldest votes up vote 41 down vote accepted Status 422 (RFC 4918, Section 11.2) comes to mind: The 422 (Unprocessable Entity) status code means the server understands the content type of the request entity (hence a 415(Unsupported Media Type) status code is inappropriate), and the s
Error 400: Bad Request The HTTP ‘Error 400: Bad Request’ typically occurs when a web server receives a request that it is unable to understand. The cause of
400 Bad Request Chrome
this is often malformed syntax. If the request contains syntax that doesn’t conform 400 bad request request header or cookie too large to the HTTP protocol, the server will generate the 400 error. The request should not be re-sent without modifications. The the request could not be understood by the server due to malformed syntax venmo 400 Error occurs whenever the HTTP search cycle is terminated by the web server. As a result, the client is not granted access to the particular information it requested. This is often because http://stackoverflow.com/questions/4781187/http-400-bad-request-for-logical-error-not-malformed-request-syntax the request does not adhere to the rules listed under the hypertext transfer protocol. Consequently, the client receives a HTTP status code and data stream transmitting the ‘400′ error. How Does The HTTP Cycle Flow? When a client such as a web browser requests a http resource, it goes through the following process: The client receives the IP address for the respective domain as you request, using https://www.helpdesksoftware.biz/400-bad-request/ the DNS system. An IP socket connection is opened to that IP address. Then HTTP data stream is sent as a request through that socket by the client. This request is obtained by the web server, which sends a relevant reply as a HTTP data stream which contains status codes and other data. The web client receives the reply and displays the results. This video provides an visualization of the data flow - http://www.youtube.com/watch?v=Pdqss2GvU5M. Different browsers display different amounts of information regarding the 400 Bad Request error. By default, Internet Explorer shows much more detail than other browsers, and it actually suggests possibilities for the cause of the error. For example, if you open a url that triggers a 400 Bad Request error in Internet Explorer, it will display the message below: If Internet Explorer shows a message with no description of the 400 Bad Request error, as below, that means that the “Show friendly http error message” option is disabled. To re-enable it, click on ‘Settings’, and go to the ‘Advanced’ tab. Put a tick in the “Show friendly http error message” box. Mozilla Firefox and Google Chrome will not show much information in contrast to Internet Expl
of a request that it received. Outline: Symptoms Causes and Solutions http://www.getnetgoing.com/HTTP-400.html Extra information Footnotes Symptoms Internet Explorer may report this as “The webpage cannot be found” Microsoft Windows Update reports HTTP 400 errors with error http://forums.timewarnercable.com/t5/TWC-WiFi-Hotspots/Getting-error-Bad-request-syntax-or-unsupported-method/td-p/85837 code 0x80244016 (hexadecimal 80244016). Apache web servers report this as: Bad Request Your browser sent a request that this server could not understand. Microsoft IIS web bad request servers provide extended error codes 400.1 to 400.9. For details, see Microsoft Knowledge Base article 943891: “The HTTP status codes in IIS 7.0” Google servers may report HTTP 400 errors in several ways, e.g.: By accessing http://www.google.com/reader/view/null: Google Error Client Error There was an error in your request. By 400 bad request accessing http://www.google.com/history/feeds/default/subscriptions/browser (when you haven't subscribed to Google's browser history feature): Google Error Bad Request Your client has issued a malformed or illegal request. Image from http://www.flickr.com/photos/apelad/ Causes and Solutions The official description of what causes HTTP 400 errors is very broad: “The request could not be understood by the server due to malformed syntax.&rdquo In turn, that can have several causes: Bad server name When the server indicates “Bad Request (Invalid Hostname)”: The website name may lead to a web hosting server that no longer serves the web site with that name. If there are multiple sites listed in the “Other Website On” section at the bottom of http://www.websiteoutlook.com, then the server is probably part of a web hosting site. This can happen when the owner of a web site ends an agreement with a web hosting service, but has not updated information about their site fr
Updates Suggestions About the Community Forums Feedback and Suggestions- TWC Service Product Feedback and Suggestions TWC Experience TWC ID TWC ID & My Account Internet Connectivity Web Browsing Email Home Networking IPv6 TWC WiFi Hotspots Antivirus Tablets and MobileDevices TV Equipment Picture Quality Channels and Programming TWC TV TWCTV.com TWC TV for iOS TWC TV for Android TWC TV for Roku TWC TV- Other Devices TV Everywhere TWC Apps Other TWC Apps CableCARDs and Tuning Adapters CableCARD Q and A TiVo Ceton Hauppauge Other CableCARD Devices Tuning Adapters Home Phone Equipment Voicemail & Features TWC IntelligentHome Product Usage Equipment and Components TWC IntelligentHome Mobile App TWC IntelligentHome Portal Browse Sign In TWC : Internet : TWC WiFi Hotspots : Getting error: Bad request syntax or unsupported m... TWC WiFi Hotspots Reply Topic Options Subscribe to RSS Feed Mark Topic as New Mark Topic as Read Float this Topic to the Top Bookmark Subscribe Printer Friendly Page All Forum Topics Previous Topic Next Topic Getting error: Bad request syntax or unsupported method Mirsky Rookie Options Mark as New Bookmark Subscribe Subscribe to RSS Feed Highlight Print Email to a Friend Report Inappropriate Content 10-30-2015 08:07 PM - edited 10-30-2015 08:08 PM 10-30-2015 08:07 PM - edited 10-30-2015 08:08 PM Getting error: Bad request syntax or unsupported method [Edited] Hi. I'm having problems using Wifi hotspots.I'm wondering if someone who reads theseforums might have an idea of how to solve the problem I'm having.I'm using an iPhone 5s running iOS 9.1.My iPhone is new (to me, at least; I bought it used two weeks ago).When I tried to use a Time Warner wifi hotspot it sent me to a screen (I couldn't tell if it was a webpage) for me to verify my account. The top of the screen said“redir.twcwifi.com." Below, the screen said"Bad request syntax or unsupported method" and I was unable to do anything to log in.This happens forTWC Wifi Hotspots, TWC Wifi-Passpoint hotspots and Cable Wifi hotspots.I talked to someone using Time Warner's live chat to find out what was causing