Error 502 Proxy Error
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a proxy server. The problem is typically caused for one of two reasons: 1 – The Internet Security and Acceleration (ISA) is configured to throw a proxy error to help guard against external 502 proxy error apache or internally-based Internet threats, and 2- The client or server computers are misconfigured or using
502 Proxy Error Ftp
outdated software. What is a 502 Proxy Error? A 502 proxy error is typically thrown in the HTTP cycle. When the error 502 proxy error error reading from remote server occurs, a server (does not have to be a Web server) is filling a role similar to a proxy or a gateway server. When a client computer sends an HTTP request (typically a web browser, but can be 502 proxy error connection refused any software application that is capable of making an HTTP request), it will pass through the server in order to obtain access to the desired URL. The proxy or gateway subsequently receives a 502 error, or invalid response, from the server located “upstream” in the attempt to fulfill the client request. The majority of the time the error is thrown, the upstream server is functioning appropriately. The proxy or gateway and upstream servers just cannot
The Proxy Server Received An Invalid Response From An Upstream Server
agree on the appropriate protocol for exchanging the information requested in the original client HTTP request. In many of these cases, either the proxy or upstream server are not configured correctly or are running incompatible software. Why Does a 502 Proxy Error Get Thrown? During a typical web browsing session, the following is an example of the classic HTTP cycle when a client computer and web server are communicating: Client Computer: The IP address of the desired website will be obtained from the URL of the site from the DNS server. Client Computer: The computer obtains an IP socket connection to the desired IP address and then sends an HTTP data stream through the IP address. Web Server: HTTP data is sent back to the client computer in response to the original HTTP request. The HTTP response will include status codes and other useful information for the client computer. Client Computer: If there is an error in the client’s request or server’s ability to respond, there will be an HTTP error code of 502 included in the server’s response (502 Proxy Error). How to Fix 502 Proxy Errors (Client Side) One of the most frustrating things for the average computer user is determining where the problem resides when receiving the 502 Proxy Error. Before engaging the webmaster of the site or one’s Inter
504 Gateway Timeout Error 3 503 Service Unavailable 4 500 Internal Server Error 5 How to Fix a 400 Bad Request Error 502 proxy error ssl About.com About Tech PC Support . . . Troubleshooting Guides Error 502 proxy error the login request was denied Messages 0 to 9 Error Messages Understanding and Fixing 502 Bad Gateway Errors Tactics to Fix a
Error Code 502 Proxy Error
502 Bad Gateway Error 502 Bad Gateway Error. © THORDOG By Tim Fisher PC Support Expert Share Pin Tweet Submit Stumble Post Share By Tim Fisher Updated October http://www.tech-faq.com/502-proxy-error.html 02, 2016. The 502 Bad Gateway error is an HTTP status code that means that one server received an invalid response from another server.The Bad Gateway error can be customized by each website. While fairly uncommon, different web servers do describe this error differently. Here are some common ways you might see it.How the 502 http://pcsupport.about.com/od/findbyerrormessage/a/502error.htm Error Appears"502 Bad Gateway""502 Service Temporarily Overloaded""Error 502""Temporary Error (502)""502 Proxy Error""502 Server Error: The server encountered a temporary error and could not complete your request""HTTP 502""502. That's an error""Bad Gateway: The proxy server received an invalid response from an upstream server""HTTP Error 502 - Bad Gateway"The 502 Bad Gateway error displays inside the Internet browser window, just as web pages do.Twitter's famous "fail whale" error that says Twitter is over capacity is actually a 502 Bad Gateway error (even though a 503 Error would make more sense).A Bad Gateway error received in Windows Update generates a 0x80244021 error code or the message WU_E_PT_HTTP_STATUS_BAD_GATEWAY. continue reading below our video How to Fix Browser Error Codes When Google services, like Google Search or Gmail, are experiencing a 502 Bad Gateway, they often show Server Error, or sometimes just 502, on the screen.502 Bad Gateway errors are completely independent of your particular setup, meaning that you could see one in any browser, on any operating system, an
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the http://stackoverflow.com/questions/29642042/what-is-502-proxy-error-how-to-resolve-it workings and policies of this site About Us Learn more about http://www.checkupdown.com/status/E502.html Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges 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. 502 proxy Join them; it only takes a minute: Sign up What is 502 Proxy error? How to Resolve it up vote 2 down vote favorite When i try to login into Artifactory web appliaction ,its showing proxy error. The Error message is below. Proxy Error The proxy server received an invalid response from an upstream server. The proxy server could 502 proxy error not handle the request POST /artifactory/webapp/login.html. Reason: Error reading from remote server Apache/2.2.15 (CentOS) Server at XX.XX.XX.XX Port 80 Any Solution for this? apache tomcat artifactory share|improve this question asked Apr 15 '15 at 5:12 Anil Yadav 125112 Do you see any errors in the Artifactory log? how is your proxy configured? can you login Artifactory directly (bypassing the proxy)? –drorb Apr 15 '15 at 11:53 In error log also same error...connection time out..and proxy: Error reading from remote server returned by ............. –Anil Yadav Apr 15 '15 at 13:01 This looks like an error from an Apache log not Artifactory. I guess you have an Apache HTTPd server in front of Artifactory serving as a proxy. –drorb Apr 16 '15 at 6:25 Yes Drorb..I increased the timeout to 120 sec in httpd.conf . Now i m able to login. But the Artifactory appliaction is taking more than 100 sec to login...Is there any way to reduce this time. –Anil Yadav Apr 16 '15 at 6
This server received an invalid response from an upstream server it accessed to fulfil the request. This usually does not mean that the upstream server is down (no response to the gateway/proxy), but rather that the upstream server and the gateway/proxy do not agree on the protocol for exchanging data. Given that Internet protocols are quite clear, it often means that one or both machines have been incorrectly or incompletely programmed. 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. Before analysing this problem, you should clear your browser cache completely. If you are surfing the Web and see this problem for all Web sites you try to visit, then either 1) your ISP has a major equipment failure/overload or 2) there is something wrong with your internal Internet connection e.g. your firewall is not functioning correctly. In the first case, only your ISP can help you. In the second case, you need to fix whatever it is that is preventing you reaching the Internet. 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. one of their pieces of equipment is failing/overloaded. Contact the people at those sites. Fixing 502 errors - CheckUpDown Our service monitors your site for HTTP errors like 502. Use of proxies and caching is increasing on the Web. Our CheckUpDown robot will always try to "drill through" to the real computer that actually hosts the Web site, but we do not have complete control over where our HTTP request actually ends up. If only one link in the chain of computers dealing with our HTTP request is broken, then an error such as 502 can easily occur. Please contact us (email preferred) whenever you encounter 502 errors - there is nothing you can do to sort them out. We then have to liaise with your ISP and the vendor of the Web server software so that they can review the flow of IP data traffic between various computers under their control. 502 errors in the HTTP cycle Any client (e.g. your Web browser or our Check