Apache Error Got Bad Response 5
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[x] First Last Prev Next This bug is not in your last search results. Bug36495 - apache 502 proxy error mod_proxy_ajp: ajp_check_msg_header() got bad signature xxxx Summary: mod_proxy_ajp: ajp_check_msg_header() got the proxy server received an invalid response from an upstream server. apache reverse proxy bad signature xxxx Status: NEEDINFO Product: Apache httpd-2 Classification: Unclassified Component: mod_proxy Version: 2.2.0 Hardware: PC Linux 502 proxy error apache reverse proxy Importance: P2 normal with 13 votes (vote) TargetMilestone: --- Assigned To: Apache HTTPD Bugs Mailing List URL: Keywords: Depends on: Blocks: Show dependency tree Reported:
502 Proxy Error Fix
2005-09-05 09:07 UTC by Xuekun Hu Modified: 2014-02-23 11:37 UTC (History) CC List: 9 users (show) andy.steeley bugzilla cameron.taggart chuck.mcintyre mail mathieu.rozieres robert stalet william.barker Attachments Add an attachment (proposed patch, testcase, etc.) Note You need to log in before you can comment on or make changes to this bug. Description Xuekun Hu 2005-09-05 09:07:26 apache proxytimeout UTC I tried to use the new connector "mod_proxy_ajp" to connect with Apache2.1.x and TOMCAT 5.5.9. With little simultaneous connections, all work fine. However when have lots of simultaneous connections, there are lots of the belows errors: ... [Mon Sep 05 14:29:35 2005] [error] ajp_check_msg_header() got bad signature 40 [Mon Sep 05 14:29:35 2005] [error] ajp_ilink_receive() received bad header [Mon Sep 05 14:29:35 2005] [error] proxy: got bad response (2) from (null) (*) [Mon Sep 05 14:29:35 2005] [error] ajp_read_header: ajp_ilink_receive failed [Mon Sep 05 14:29:35 2005] [error] (120007)APR does not understand this error code: proxy: read response failed from (null) (*) [Mon Sep 05 14:29:35 2005] [error] ajp_check_msg_header() got bad signature 1a8a [Mon Sep 05 14:29:35 2005] [error] ajp_ilink_receive() received bad header [Mon Sep 05 14:29:35 2005] [error] ajp_read_header: ajp_ilink_receive failed [Mon Sep 05 14:29:35 2005] [error] (120007)APR does not understand this error code: proxy: read response failed from (null) (*) [Mon Sep 05 14:29:35 2005] [error] ajp_check_msg_header() got bad
Zone Create a Push Zone Upload Data to a Push Zone Delete a Push Zone Push Zone Settings Push Zone Subusers Pull Zone Create a Pull Zone Delete a Pull Zone Purge CDN Cache Pull Zone Settings the proxy server received an invalid response from an upstream server tomcat CNAMES Create a Zonealias Delete a Zonealias Zone Security How to setup Let's Encrypt
Apache 502 Bad Gateway
TLS How to setup Custom SSL How to order a SSL certificate Secure Token Create a Zonereferrer (Hotlink Protection) Delete
502 Bad Gateway Apache Proxy
a Zonereferrer Debugging CDN Troubleshooting Guide Technical Questions CDN Error Codes KeyCDN Log Format KeyCDN Log Forwarding Configure your own Syslog Server Getting Started General Account Management Integration Guides CMS Integration Guides Framework Integration https://bz.apache.org/bugzilla/show_bug.cgi?id=36495 Guides Custom CDN Integration CDN How To's Tutorials Zone Configuration General Settings Push Zone Create a Push Zone Upload Data to a Push Zone Delete a Push Zone Push Zone Settings Push Zone Subusers Pull Zone Create a Pull Zone Delete a Pull Zone Purge CDN Cache Pull Zone Settings CNAMES Create a Zonealias Delete a Zonealias Zone Security How to setup Let's Encrypt TLS How to https://www.keycdn.com/support/502-bad-gateway/ setup Custom SSL How to order a SSL certificate Secure Token Create a Zonereferrer (Hotlink Protection) Delete a Zonereferrer Debugging CDN Troubleshooting Guide Technical Questions CDN Error Codes KeyCDN Log Format KeyCDN Log Forwarding Configure your own Syslog Server Knowledge Base Support/Debugging How to solve 502 Bad Gateway Issues? Updated: July 20, 2016 Comments: 1 What does 502 Bad Gateway mean? A 502 Bad Gateway indicates that the edge server (server acting as a proxy) was not able to get a valid or any response from the origin server (also called upstream server). KeyCDN returns a 500 Origin Not Reachable if a 502 Bad Gateway occurred. What does 502 Bad Gateway mean? What are the reasons for 502 Bad Gateway responses? Domain name not resolvable: The domain name is not resolving to the correct IP or it does not resolve to any IP. It is important to note that DNS changes could take same time until they are global fully propagated and active. This is very dependant on the DNS TTL defined per record. Origin server down: The server is not reachable, either because it is down or there is no connectivity to the server given. Firewall blocks request: A firewall b
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 https://en.wikipedia.org/wiki/List_of_HTTP_status_codes This is a list of Hypertext Transfer Protocol (HTTP) response status codes. It includes codes from IETF internet standards, other IETF RFCs, other specifications, and some additional commonly used codes. The https://www.addedbytes.com/articles/for-beginners/http-status-codes/ first digit of the status 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 502 proxy wordings, but any human-readable alternative can be 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 502 proxy error appear in the response payload and in documentation; not in the 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 cli
Articles Code Recommended Most Popular HTTP Status Codes for Beginners All valid HTTP 1.1 Status Codes simply explained. HTTP, Hypertext Transfer Protocol, is the method by which clients (i.e. you) and servers communicate. When someone clicks a link, types in a URL or submits out a form, their browser sends a request to a server for information. It might be asking for a page, or sending data, but either way, that is called an HTTP Request. When a server receives that request, it sends back an HTTP Response, with information for the client. Usually, this is invisible, though I'm sure you've seen one of the very common Response codes - 404, indicating a page was not found. There are a fair few more status codes sent by servers, and the following is a list of the current ones in HTTP 1.1, along with an explanation of their meanings. A more technical breakdown of HTTP 1.1 status codes and their meanings is available at http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html. There are several versions of HTTP, but currently HTTP 1.1 is the most widely used. Informational 100 - ContinueA status code of 100 indicates that (usually the first) part of a request has been received without any problems, and that the rest of the request should now be sent.101 - Switching ProtocolsHTTP 1.1 is just one type of protocol for transferring data on the web, and a status code of 101 indicates that the server is changing to the protocol it defines in the "Upgrade" header it returns to the client. For example, when requesting a page, a browser might receive a statis code of 101, followed by an "Upgrade" header showing that the server is changing to a different version of HTTP. Successful 200 - OKThe 200 status code is by far the most common returned. It means, simply, that the request was received and understood and is being processed.201 - CreatedA 201 status code indicates that a request was successful and as a result, a resource has been created (for example a new page).202 - AcceptedThe status code 202 indicates that server has received and understood the request, and that it has been accepted for processing, although it may not be processed immediately.203 - Non-Authoritative InformationA 203 status code means that the request was received and understood, and that information sent back about the response is from a third party, rather than the original server. This is virtually identical in meaning to a 200 status code.204 - No ContentThe 204 status code means that the request was received and understood, but that there is no need to send any data back.205 - Reset ContentThe 205 status code is a request fr