502 Proxy Error Javascript
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502 Proxy Error Reason Error Reading From Remote Server
it only takes a minute: Sign up 502 proxy error in Express.js while integrating with Apache [closed] up vote 6 down vote favorite 1 I am hosting apache and node.js server together with apache server proxying to node server.My framework is express.js and I am using amCharts.I have timeout for proxying set to 600.When I open my website I 502 proxy error openshift get only the static content and not the dynamic content of amCharts. This is my server side code: var express = require('express'); var routes = require('./routes'); var user = require('./routes/user'); var http = require('http'); var path = require('path'); var fs = require('fs'); var data = ''; var app = express(); var server = app.listen(3000); var io = require('socket.io').listen(server); // all environments //app.set('port', process.env.PORT || 3000); //app.set('views', path.join(__dirname, 'views')); app.set('view engine', 'ejs'); app.use(express.favicon()); app.use(express.logger('dev')); app.use(express.json()); app.use(express.urlencoded()); app.use(express.methodOverride()); app.use(app.router); app.use(express.static(path.join(__dirname, 'public'))); io.sockets.on('connection', function (socket) { setInterval(function(){ var file = __dirname + '/config.json'; fs.readFile(file, 'utf8', function (err, data) { if (err) { console.log('Error: ' + err); return; } data = JSON.parse(data); // You can save those values somewhere or just log them to the console console.dir(data); socket.emit('news', { hello: data}); }); }, 5000); }); app.get('/', function (req, res){ res.render('map1.html'); }); app.set('views', __dirname + '/views'); app.engine('html', require('ejs').renderFile); // development only if ('development' == app.get('env')) { app.use(express.errorHandler()); } console.log("Express server listening on port 3000"); Error on Console is: GET http://localhost/ammap.css 502 (Proxy Error) localhost/:7 GET http://localhost/ammap.js 502 (Proxy Error) localhost/:8 GET http://l
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502 Proxy Error Apache Reverse Proxy
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 Why is it giving me a 502 Proxy http://stackoverflow.com/questions/22375975/502-proxy-error-in-express-js-while-integrating-with-apache error up vote 0 down vote favorite Im using nodejs and express. Everything works fine, but if i try to upload images i get this error Proxy Error The proxy server received an invalid response from an upstream server. The proxy server could not handle the request POST /api/upload. Reason: Error reading from remote server Additionally, a 502 Bad Gateway error was encountered while trying to use http://stackoverflow.com/questions/38328598/why-is-it-giving-me-a-502-proxy-error an ErrorDocument to handle the request I have no idea what is happening. I googled and i added the following line to my httpd.conf Timeout 2400 ProxyTimeout 2400 ProxyBadHeader Ignore But still the same error. Is there anything i am doing wrong or i should do? This is my httpd.conf
Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and http://serverfault.com/questions/185894/proxy-error-502-reason-error-reading-from-remote-server-with-apache-2-2-3-de policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Server Fault Questions Tags Users Badges http://blog.somepixels.net/en/502-proxy-error-uploading-from-apache-mod_proxy-to-tomcat-7/ Unanswered Ask Question _ Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute: Sign up Here's how it works: Anybody 502 proxy can ask a question Anybody can answer The best answers are voted up and rise to the top Proxy Error 502 “Reason: Error reading from remote server” with Apache 2.2.3 (Debian) mod_proxy and Jetty 6.1.18 up vote 46 down vote favorite 22 Apache is receiving requests at port :80 and proxying them to Jetty at port :8080 The proxy server received an 502 proxy error invalid response from an upstream server The proxy server could not handle the request GET /. My dilemma: Everything works fine normally (fast requests, few seconds or few tens of seconds long requests are processed ok). Problems occur when request processing takes long (few minutes?). If I issue request instead directly to Jetty at port :8080 the request is processed OK. So problem is likely to sit somewhere between Apache and Jetty where I am using mod_proxy. How to solve this? I have already tried some "tricks" related to KeepAlive settings, without luck. Here is my current configuration, any suggestions? #keepalive Off ## I have tried this, does not help #SetEnv force-proxy-request-1.0 1 ## I have tried this, does not help #SetEnv proxy-nokeepalive 1 ## I have tried this, does not help #SetEnv proxy-initial-not-pooled 1 ## I have tried this, does not help KeepAlive 20 ## I have tried this, does not help KeepAliveTimeout 600 ## I have tried this, does not help ProxyTimeout 600 ## I have tried this, does not help NameVirtualHost *:80
API is. We're using mod_proxy to do the job and everything is hosted on Amazon's EC2. Everything was working perfectly, but sometime ago we've started to see some errors, when uploading big files, like this: Proxy Error The proxy server received an invalid response from an upstream server. The proxy server could not handle the request POST /app/api/upload. Reason: Error reading from remote server Apache/2.2.22 (Amazon) Server at our_app_server.com Port 443 We started looking for solutions to this problem and tried a lot of things, like configuring the timeout on Apache's httpd.conf: # Configuring the timeout Timeout 2400 ProxyTimeout 2400 # Configuring the reverse proxy ProxyPass /app http://localhost:8080/app ProxyPassReverse /app http://localhost:8080/app After we've changed the timeout, it got a little better, but didn't solve the problem completely. So, after a lot more googling, we found out that this error on Apache's log: (103)Software caused connection abort: proxy: pass request body failed is caused by a malformed server response and, to ignore it, we could set this option on our httpd.conf: ProxyBadHeader Ignore After this change, it finally revealed to us the real problem: org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.springframework.web.multipart.MultipartException: Could not parse multipart servlet request; nested exception is org.apache.commons.fileupload.FileUploadBase$IOFileUploadException: Processing of multipart/form-data request failed. Read timed out org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:894) org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789) javax.servlet.http.HttpServlet.service(HttpServlet.java:641) javax.servlet.http.HttpServlet.service(HttpServlet.java:722) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:312) org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:116) org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:324) org.springframework.