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Http 502 Error Bad Gateway


Verify if your server is reachable by using a ping test or trace-route. If so, you could log the time(s) and browser version and submit an error report to the webmaster, because 502 errors can be caused by bugs in the associated PHP programming. Some Bad Gateway errors are caused by temporary issues with DNS servers.Note: Unless you've previously changed them, the DNS servers you have configured right now are probably the ones automatically assigned by your ISP. About Wiki-Errors Contact us Help Center Privacy Policy Terms of use End User License Agreement(EULA) Refund Policy How to Uninstall Disclaimers Sitemap TechNet Products Products Windows Windows Server System Center Browser   Office Office 365 Exchange Server   SQL Server SharePoint Products Skype for Business See all products » IT Resources Resources Evaluation Center Learning Resources Microsoft Tech Companion App Microsoft Technical Communities Microsoft Virtual Academy Script Center Server and Tools Blogs TechNet Blogs   TechNet Flash Newsletter TechNet Gallery TechNet Library TechNet Magazine TechNet Subscriptions TechNet Video TechNet Wiki Windows Sysinternals Virtual Labs Solutions Networking Cloud and Datacenter Security Virtualization Downloads Updates Service Packs Security Bulletins Windows Update Trials Windows Server 2012 R2 System Center 2012 R2 Microsoft SQL Server 2014 SP1 Windows 8.1 Enterprise See all trials » Related Sites Microsoft Download Center TechNet Evaluation Center Drivers Windows Sysinternals TechNet Gallery Training Training Expert-led, virtual classes Training Catalog Class Locator Microsoft Virtual Academy Free Windows Server 2012 courses Free Windows 8 courses SQL Server training Microsoft Official Courses On-Demand Certifications Certification overview MCSA: Windows 10 Windows Server Certification (MCSE) Private Cloud Certification (MCSE) SQL Server Certification (MCSE) Other resources TechNet Events Second shot for certification Born To Learn blog Find technical communities in your area Support Support options For business For developers For IT professionals For technical support Support offerings More support Microsoft Premier Online TechNet Forums MSDN Forums Security Bulletins & Advisories Not an IT pro? navigate here

Here are a few examples of what you might see: "502 Bad Gateway" "HTTP Error 502 - Bad Gateway" "502 Service Temporarily Overloaded" "Error 502" "502 Proxy Error" "HTTP 502" "502 Bad Gateway NGINX" You can see in greater detail what the error specifically entails by going to your web server's error log file. WinHTTP/WebIO Tracing Usually, Network Monitor will provide you with the information you need to identify exactly what is timing out, however there are times (such as when the traffic is SSL encrypted) that you will need to try a different approach. A Web Proxy client request is sent either from a client to the port on which ISA Server is listening for outbound Web requests (8080), or to port 80. GENERAL_SET_REQUEST_HEADER HeaderName="Max-Forwards", HeaderValue="10", Replace="true" 16:50:21.033 79. https://www.theguardian.com/technology/askjack/2013/aug/01/502-bad-gateway-error

502 Bad Gateway Nginx

Web listeners listen for incoming requests for Web resources published by ISA Server on port 80 for HTTP, and port 443 for HTTPS. More blogposts Topics Computing Internet Share on Facebook Share on Twitter Share via Email Share on LinkedIn Share on Google+ Share on WhatsApp Share on Messenger Reuse this content View all comments > Order by newest oldest recommendations Show 25 25 50 100 All Threads collapsed expanded unthreaded Loading comments… Trouble loading? Contact the webmaster of the website you are attempting to access by using the e-mail [email protected] and alert them of the 502 Bad Gateway error. To understand how this occurs, it is first necessary to understand the difference between a direct request and a proxy request: When a client browser without Web proxy settings specified makes a request for a Web resource, the browser does the following: The user types "http://host.domain.tld/path/resource.ext" in the browser.

Often, simply refreshing or reloading the page (Ctrl-F5) will work, but sometimes the problem can persist for days. The second thing to try is a different browser. What are two consecutive primes whose difference is 666? 502 Bad Gateway Nginx/1.4.6 (ubuntu) Most websites have social networking accounts they use to help support their services.

In Freecycle's case, there's an alternative service called Freegle, which was set up in the UK in 2009 by a disgruntled group of former Freecycle moderators. 502 Bad Gateway Fix Sometimes it will come up reading differently as 502 – Service Temporarily Overloaded or even as HTTP Error 502 – Bad Gateway. If the traffic between the ARR server and the member servers is over SSL, then WinHTTP tracing on Windows Server 2008 or WebIO tracing on Windows Server 2008 R2 may provide additional information. Do you know how to sort this out?

The content you requested has been removed. 502 Bad Gateway Php This will help if you are tracing the target or destination of the HTTP request: 77. Fixing 502 errors - CheckUpDown Our service monitors your site for HTTP errors like 502. My apache server is not crashing... –Arif Jul 29 '15 at 7:35 @Arif Get a more stable connection by selecting a less busy WiFi channel or plugging in a shielded network cable until it locks into place with clean connectors. –Cees Timmerman Jan 7 at 15:18 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign up using Facebook Sign up using Email and Password Post as a guest Name Email Post as a guest Name Email discard By posting your answer, you agree to the privacy policy and terms of service.

502 Bad Gateway Fix

If you get this problem for only some of the Web sites you try to visit then it is likely to be a problem at those sites i.e. Resource conflicts When the 502 error "The URL does not use a recognized protocol" is issued because of a port conflict, the following event appears in the Microsoft Windows Server® application event log: Event ID: 14148 Description: The Web Proxy filter failed to bind its socket to port . 502 Bad Gateway Nginx Here's What to Do List See an Error Code in Your Browser? 504 Bad Gateway In some cases, you might still be able to get the information you need, either by using the version cached by a search engine such as Google (click the down-arrow next to the web address), or by using a copy of the site archived at the Wayback Machine.

See ASP.NET Ajax CDN Terms of Use – http://www.asp.net/ajaxlibrary/CDN.ashx. ]]> ERROR The requested URL could not be retrieved The following error was encountered while trying to retrieve the URL: Connection to failed. check over here Here's What to Do List Understanding HTTP Error and Status Codes Article Is Facebook Down Right Now... To quote the definition of 502 Bad Gateway from Wikipedia: "The server was acting as a gateway or proxy and received an invalid response from the upstream server." There are many other 5xx server error messages, all of which boil down to: "The server failed to fulfill an apparently valid request." They don't tell you much about the real source of the problem. If you can't get through to a website, here are five things you can try.... 502 Bad Gateway Nginx Means

The internet uses a DNS (domain name system) to convert between human-friendly web addresses and machine-friendly IP addresses, but you can always try going to instead of http://www.freecycle.org/. This server received an invalid response from an upstream server it accessed to fulfil the request. Finally, there's the PC-industry panacea of rebooting the machine, which didn't work in your case. his comment is here It might be that doing them is simply introducing a delay and the site would have worked if you hadn't bothered.

How to solve 502 errors? 502 Bad Gateway Wordpress Article What to do with 'DNS Server Not Responding' issues on your network Get the Most From Your Tech With Our Daily Tips Email Address Sign Up There was an error. In the example below, a request timed out because it took more than 30 seconds (ARR's default timeout) to run. 336 2:32:22 PM 7/22/2011 32.6380453 w3wp.exe (1432) WINHTTP_MicrosoftWindowsWinHttp WINHTTP_MicrosoftWindowsWinHttp:12:32:23.123 ::sys-recver starts in _INIT state 337 2:32:22 PM 7/22/2011 32.6380489 w3wp.exe (1432) WINHTTP_MicrosoftWindowsWinHttp WINHTTP_MicrosoftWindowsWinHttp:12:32:23.123 ::current thread is not impersonating 340 2:32:22 PM 7/22/2011 32.6380584 w3wp.exe (1432) WINHTTP_MicrosoftWindowsWinHttp WINHTTP_MicrosoftWindowsWinHttp:12:32:23.123 ::sys-recver processing WebReceiveHttpResponse completion (error-cdoe = ? (0x5b4), overlapped = 003728F0)) 341 2:32:22 PM 7/22/2011 32.6380606 w3wp.exe (1432) WINHTTP_MicrosoftWindowsWinHttp WINHTTP_MicrosoftWindowsWinHttp:12:32:23.123 ::sys-recver failed to receive headers; error = ? (1460) 342 2:32:22 PM 7/22/2011 32.6380800 w3wp.exe (1432) WINHTTP_MicrosoftWindowsWinHttp WINHTTP_MicrosoftWindowsWinHttp:12:32:23.123 ::ERROR_WINHTTP_FROM_WIN32 mapped (?) 1460 to (ERROR_WINHTTP_TIMEOUT) 12002 343 2:32:22 PM 7/22/2011 32.6380829 w3wp.exe (1432) WINHTTP_MicrosoftWindowsWinHttp WINHTTP_MicrosoftWindowsWinHttp:12:32:23.123 ::sys-recver returning ERROR_WINHTTP_TIMEOUT (12002) from RecvResponse() 344 2:32:22 PM 7/22/2011 32.6380862 w3wp.exe (1432) WINHTTP_MicrosoftWindowsWinHttp WINHTTP_MicrosoftWindowsWinHttp:12:32:23.123 ::sys-req completes recv-headers inline (sync); error = ERROR_WINHTTP_TIMEOUT (12002) In this next example, the content server was completely offline: 42 2:26:39 PM 7/22/2011 18.9279133 WINHTTP_MicrosoftWindowsWinHttp WINHTTP_MicrosoftWindowsWinHttp:12:26:39.704 ::WinHttpReceiveResponse(0x11d23d0, 0x0) {WINHTTP_MicrosoftWindowsWinHttp:4, NetEvent:3} 43 2:26:39 PM 7/22/2011 18.9279633 WINHTTP_MicrosoftWindowsWinHttp WINHTTP_MicrosoftWindowsWinHttp:12:26:39.704 ::sys-recver starts in _INIT state {WINHTTP_MicrosoftWindowsWinHttp:4, NetEvent:3} 44 2:26:39 PM 7/22/2011 18.9280469 WINHTTP_MicrosoftWindowsWinHttp WINHTTP_MicrosoftWindowsWinHttp:12:26:39.704 ::current thread is not impersonating {WINHTTP_MicrosoftWindowsWinHttp:4, NetEvent:3} 45 2:26:39 PM 7/22/2011 18.9280776 WINHTTP_MicrosoftWindowsWinHttp WINHTTP_MicrosoftWindowsWinHttp:12:26:39.704 ::sys-recver processing WebReceiveHttpResponse completion (error-cdoe = WSAETIMEDOUT (0x274c), overlapped = 003728F0)) {WINHTTP_MicrosoftWindowsWinHttp:4, NetEvent:3} 46 2:26:39 PM 7/22/2011 18.9280802 WINHTTP_MicrosoftWindowsWinHttp WINHTTP_MicrosoftWindowsWinHttp:12:26:39.704 ::sys-recver failed to receive headers; error = WSAETIMEDOUT (10060) {WINHTTP_MicrosoftWindowsWinHttp:4, NetEvent:3} 47 2:26:39 PM 7/22/2011 18.9280926 WINHTTP_MicrosoftWindowsWinHttp WINHTTP_MicrosoftWindowsWinHttp:12:26:39.704 ::ERROR_WINHTTP_FROM_WIN32 mapped (WSAETIMEDOUT) 10060 to (ERROR_WINHTTP_TIMEOUT) 12002 {WINHTTP_MicrosoftWindowsWinHttp:4, NetEvent:3} 48 2:26:39 PM 7/22/2011 18.9280955 WINHTTP_MicrosoftWindowsWinHttp WINHTTP_MicrosoftWindowsWinHttp:12:26:39.704 ::sys-recver returning ERROR_WINHTTP_TIMEOUT (12002) from RecvResponse() {WINHTTP_MicrosoftWindowsWinHttp:4, NetEvent:3} Other Resources ERR.EXE Winhttp Error Codes Failed Request Tracing Winhttp Tracing Network Monitor By Richard MarrRichard Marr is a Senior Escalation Engineer at Microsoft Table of ContentsPlanning for ARRArticleApplication Request Routing Version 2 OverviewArticleUsing the Application Request Routing ModuleArticleOverview of Shared Hosting Deployment Using Application Request Routing 2.0LinkNew Features in ARR 3.0Installing Application Request Routing (ARR)ArticleInstall Application Request Routing Version 2ArticleDeploying Application Request Routing in CDNArticleDeployment Recommendations for Application Request RoutingArticleInstall Application Request RoutingConfiguring Application Request Routing (ARR)VideoDemonstration of Shared Hosting Deployment with ARRArticleConfigure and Enable Disk Cache in Application Request RoutingArticleDelete Cached ObjectsArticleCache Hierarchy Management Using Application Request RoutingArticleBrowse Cached Contents on Disk on Application Request RoutingArticleManually Override Cache-control Directives Using Application Request RoutingArticleWarm Up Cache Nodes on Application Request RoutingArticleConfigure Byte-range Request Segment Size in Application Request RoutingArticleConfigure Request Consolidation Feature in Application Request RoutingArticleUsing Compression in Application Request RoutingArticleUsing Performance CountersArticleConfigure Caching with Query String Support in Application Request RoutingArticleUse Scavenge.exe tool to delete cached content from secondary cache driveArticleARR: Support Added for WINHTTP_OPTION_SECURITY_FLAGSArticleARR as generic proxy in Hotmail and SkyDriveArticleShared Hosting Using Application Request Routing (ARR)ArticleConfigure 3-tier deployment architecture using Application Request RoutingArticleDefine and Configure an Application Request Routing Server FarmArticleHTTP Load Balancing using Application Request RoutingArticlePilot program management using Application Request RoutingArticleAchieving High Availability and Scalability - 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This particular error example was created by calling Response.Close() in the ASP.net page after sending part of the response and then calling Response.Flush(). Fixing 502 errors - general This problem is due to poor IP communication between back-end computers, possibly including the Web server at the site you are trying to visit. Browse other questions tagged http client status or ask your own question. http://orgias.org/bad-gateway/http-error-bad-gateway.html Web requests to port 8080 are handled directly by Web Proxy Filter.