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502 Proxy Error

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Failed To Load Resource The Server Responded With A Status Of 502 (connection Refused)

about 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. Join them; it only takes a minute: Sign up HTTPError: HTTP Error 502: Proxy Error ( Connection refused ) up vote 1 down vote favorite I am continuously getting connection Proxy error 502 (connection refused) on Google app engine while running the devserver locally. proxy is by passed for localserver but still its its refusing the connection. here is what I am getting: HTTPError() HTTPError() Traceback (most recent call last): File "/home/arslan/GAE/google_appengine/lib/cherrypy/cherrypy/wsgiserver/wsgiserver2.py", line 1302, in communicate req.respond() File "/home/arslan/GAE/google_appengine/lib/cherrypy/cherrypy/wsgiserver/wsgiserver2.py", line 831, in respond self.server.gateway(self).respond() File "/home/arslan/GAE/google_appengine/lib/cherrypy/cherrypy/wsgiserver/wsgiserver2.py", line 2115, in respond response = self.req.server.wsgi_app(self.env, self.start_response) File "/home/arslan/GAE/google_appengine/google/appengine/tools/devappserver2/wsgi_server.py", line 250, in __call__ return app(environ, start_response) File "/home/arslan/GAE/google_appengine/google/appengine/tools/devappserver2/request_rewriter.py", line 311, in _rewriter_middleware response_body = iter(application(environ, wrapped_start_response)) File "/home/arslan/GAE/google_appengine/google/appengine/tools/devappserver2/python/request_handler.py", line 89, in __call__ self._flush_logs(response.get('logs', [])) File "/home/arslan/GAE/google_appengine/google/appengine/tools/devappserver2/python/request_handler.py", line 225, in _flush_logs apiproxy_stub_map.MakeSyncCall('logservice', 'Flush', request, response) File "/home/arslan/GAE/google_appengine/google/appengine/api/apiproxy_stub_map.py", line 94, in MakeSyncCall return stubmap.MakeSyncCall(service, call, request, response) File "/home/arslan/GAE/google_appengine/google/appengine/api/apiproxy_stub_map.py", line 328, in MakeSyncCall rpc.CheckSuccess() File "/home/arslan/GAE/google_appengine/google/appengine/api/apiproxy_rpc.py", line 156, in _WaitImpl self.req

Ihr Webbrowser oder unser CheckUpDown-Roboter) zu erfüllen. Dieser Server empfing eine ungültige Antwort von einem vorgeschalteten Server, auf den er zugriff, um die Anforderung zu erfüllen. Dies bedeutet normalerweise nicht, dass der vorgeschaltete Server ausgefallen ist (keine Antwort zum Gateway/Proxy), sondern, dass vorgeschalteter Server und Gateway/Proxy sich nicht über das Protokoll zum Datenaustausch einig sind. Da Internetprotokolle ziemlich eindeutig sind, beduetet dies oft, dass eine oder beide Rechner falsch oder unvollständig programmiert wurden. Beheben von 502-Fehlern - allgemein Dieses Problem rührt von einer schlechten IP-Kommunikation zwischen nachgestellten Computern her. Dies kann möglicherweise den Webserver an der Site, die Sie besuchen http://stackoverflow.com/questions/17710860/httperror-http-error-502-proxy-error-connection-refused wollen, mit einschließen. Bevor Sie dieses Problem analysieren, sollten Sie Ihren Browsercache vollständig leeren. Wenn Sie im Web surfen und dieses Problem bei allen Websites, die Sie zu besuchen versuchen, sehen, dann hat entweder 1) Ihr ISP einen großen Geräteausfall/eine Überlast oder 2) es ist etwas falsch mit Ihrer internen Internetverbindung, z.B. funktioniert Ihre Firewall nicht richtig. Im ersten Fall kann Ihnen nur Ihr ISP helfen. Im http://www.checkupdown.com/status/E502.html zweiten Fall müssen Sie, was immer es ist, dass Sie davon abhält das Internet zu erreichen, korrigieren. Wenn Sie dieses Problem nur bei einigen der Websites die Sie zu besuchen versuchen erhalten, ist es wahrscheinlich ein Problem bei diesen Sites, d.h. eines ihrer Ausrüstungsteile ist ausgefallen/überlastet. Wenden Sie sich an die Betreiber dieser Sites. Beheben von 502-Fehlern - CheckUpDown Wir überwachen Ihre Site auf Fehler wie 502. Der Einsatz von Proxies und Caching nimmt im Web zu. Unser CheckUpDown-Roboter versucht immer sich zu dem realen Computer, der tatsächlich Ihre Website hostet, 'durchzubohren', aber wir haben keine vollständige Kontrolle darüber, wo unsere HTTP-Anforderung tatsächlich landet. Wenn nur ein Glied in der Kette von Computern, die mit unserer HTP-Anforderung beschäftigt sind, unterbrochen ist, dann kann ein Fehler wie ein 502 einfach auftreten. Bitte wenden Sie sich direkt (am besten per E-Mail) an uns, wenn Sie auf 502-Fehler stoßen - Sie selbst können nichts machen, um sie zu bereinigen. Wir müssen dann mit Ihrem ISP und dem Hersteller der Webserver-Software in Verbindung treten, so dass sie den IP-Datenverkehr zwischen den verschiedenen Computern, die sie betreiben, überprüfen können. 502-Fehler im HTTP-Ablauf Jeder Client (z.B. Ihr Webbrowser oder unser CheckUpDown-Roboter) durchläuft den folgenden Ablauf,

HTTP-over-RPC proxy: Truncated body 9 people starred this issue and may be notified of changes. Back to list Status: Acknowledged Owner: [email protected] Cc: [email protected], https://code.google.com/p/googleappengine/issues/detail?id=12790 [email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected] Type-Defect Priority-High Component-ManagedVMs Language-Java log-23345476 Sign in to add a comment Reported by [email protected], Mar 5, 2016 Seems that Managed VM frontend proxy unable to process responses larger that 32kb. I'm getting a text message applied to every request larger that that. Which corrupts my JSON, for example. * proxy error Does the problem affect deployed apps? Apps running in the development server? Both? Deployed apps * How can someone else reproduce the problem? It is best to provide a succinct self-contained app that demonstrates the problem. Make a following servlet ---- HttpServletResponse response; int size = 32768; byte[] buf = new byte[size]; for (int i = 0; i < buf.size(); i++) { buf[i] = 48 gae proxy error + (i % 10); } IOUtils.copy(new ByteArrayInputStream(buf), response.outputStream); ---- * What is the expected output? For example if I run it twice, with size=32767 and size=32768, it should produce long responses that ends with following: ->> with size=32767 should be -> ____0123456 ->> with size=32768 should be -> ____01234567 * What do you see instead? ->> with size=32767 it's -> ____0123456 ->> with size=32767 it's -> ____01234567Error from HTTP-over-RPC proxy: Truncated body All works fine for less that 32768 byte output. But for larger output a text is appended, which makes it corrupted I'm using following Docker image: ---- FROM gcr.io/google_appengine/jetty9-compat ---- Mar 5, 2016 #1 [email protected] Oops (is there any way to edit my post??) Wrong copy paste. It should be: ->> with size=32768 it's -> ____01234567Error from HTTP-over-RPC proxy: Truncated body Mar 6, 2016 #2 [email protected] All works fine with `FROM gcr.io/google_appengine/java-compat` based vm, and 27 Feb it was working on `jetty9-compat` image. Mar 8, 2016 #3 [email protected] In nginx logs i see this for every corrupted request: ---- 2016/03/08 16:07:47 [error] 13#0: *4035 upstream prematurely closed connection while reading upstream, client: 172.17.0.1, server: , request: "GET /filler?size=32768 HTTP/

 

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