Questions tagged [reverse-proxy]
A reverse proxy server usually refers to an HTTP accelerator or load-balancer which proxies requests on behalf of the actual clients to one or more backend HTTP servers. Make sure your question is programming-related, and not about setup/configuration. Only programming-related questions are on-topic on stackoverflow.
reverse-proxy
5,200
questions
1936
votes
21
answers
610k
views
What's the difference between a proxy server and a reverse proxy server? [closed]
What is the difference between a proxy server and a reverse proxy server?
Vicky
225
votes
12
answers
265k
views
Proxy with express.js
To avoid same-domain AJAX issues, I want my node.js web server to forward all requests from URL /api/BLABLA to another server, for example other_domain.com:3000/BLABLA, and return to user the same ...
- 8,397
224
votes
11
answers
385k
views
Nginx reverse proxy causing 504 Gateway Timeout
I am using Nginx as a reverse proxy that takes requests then does a proxy_pass to get the actual web application from the upstream server running on port 8001.
If I go to mywebsite.example or do a ...
- 2,579
172
votes
7
answers
74k
views
API gateway vs. reverse proxy
In order to deal with the microservice architecture, it's often used alongside a Reverse Proxy (such as nginx or apache httpd) and for cross cutting concerns implementation API gateway pattern is ...
- 2,927
158
votes
8
answers
259k
views
Error during SSL Handshake with remote server
I have Apache2 (listening on 443) and a web app running on Tomcat7 (listening on 8443) on Ubuntu.
I set apache2 as reverse proxy so that I access the web app through port 443 instead of 8443. Besides,...
- 1,681
115
votes
4
answers
169k
views
nginx - read custom header from upstream server
I am using nginx as a reverse proxy and trying to read a custom header from the response of an upstream server (Apache) without success. The Apache response is the following:
HTTP/1.0 200 OK
Date: Fri,...
- 1,899
96
votes
3
answers
147k
views
How to serve all existing static files directly with NGINX, but proxy the rest to a backend server.
location / {
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
if (-f $request_filename) {
...
- 6,220
76
votes
2
answers
193k
views
How to enable CORS in Nginx proxy server?
As my title, here is the config file located in conf.d/api-server.conf
server {
listen 80;
server_name api.localhost;
location / {
add_header 'Access-Control-Allow-Origin' 'http://api....
- 1,186
67
votes
3
answers
119k
views
Apache reverse proxy with basic authentication
Trying to configure my reverse proxy with basic authentication before forward the traffic to my back end server. Can any one give me a solution.
Example here:
User(internet) -> reverse proxy / ...
- 801
55
votes
4
answers
50k
views
How to redirect on the same port from http to https with nginx reverse proxy
I use reverse proxy with Nginx and I want to force the request into HTTPS, so if a user wants to access the url with http, he will be automatically redirected to HTTPS.
I'm also using a non-standard ...
- 3,105
53
votes
1
answer
51k
views
Difference between X-Forwarded-For and X-Real-IP headers
I'm using Nginx as a reverse proxy.
What is the difference between these headers:
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Real-IP $remote_addr;
In some ...
- 16.6k
49
votes
2
answers
98k
views
How to record reverse proxy upstream server serving request in Nginx log?
We use Nginx as a reverse proxy with this setup:
upstream frontends {
server 127.0.0.1:8000;
server 127.0.0.1:8001;
server 127.0.0.1:8002;
[...]
}
server {
...
- 3,958
49
votes
2
answers
104k
views
Nginx: when to use proxy_set_header Host $host vs $proxy_host
I've been reading up on reverse proxying and am wondering when proxy_set_header Host $host is appropriate over proxy_set_header Host $proxy_host. I did some research and in this article it says that ...
- 3,611
48
votes
7
answers
48k
views
How do you handle CORS in an electron app?
I'm building an electron app and need to call APIs where the API provider has not enabled CORS. The typically proposed solution is to use a reverse proxy which is trivial to do when running locally ...
- 1,396
44
votes
4
answers
41k
views
HAProxy + WebSocket Disconnection
I am using HAProxy to send requests, on a subdomain, to a node.js app.
I am unable to get WebSockets to work. So far I have only been able to get the client to establish a WebSocket connection but ...
- 14.4k
44
votes
2
answers
108k
views
What does the Resolver param in nginx do?
I am using nginx as a reverse_proxy server with ELB. I am looking for explanation regarding the resolver value I set in the nginx.conf file. My nginx.conf:
http {
...
resolver x.x.x.x valid=...
- 997
44
votes
3
answers
10k
views
Advantages of a reverse proxy in front of Node.JS
What are the advantages of having nginx or another web-server running as a reverse-proxy in front of the Node.JS? What does it provide?
(This question is intended for matters concerning web-apps, not ...
- 14.2k
44
votes
6
answers
40k
views
How to configure nginx X-Forwarded-Port to be the originally request port
I am using nginx in a standard reverse proxy scenario, to pass all requests to /auth to another host, however I'm trying to use non-standard ports.
My end goal is to have the X-Forwarded-Port header ...
- 4,366
43
votes
4
answers
35k
views
nginx proxy_pass to a linked docker container
I have two docker containers with nginx. container1 is linked to container2. Docker then adds an entry to /etc/hosts which I entered into the nginx configuration like so:
server {
location ~ ^/...
- 1,398
43
votes
2
answers
123k
views
How to pass all Python's traffics through a http proxy?
I want to pass all Python's traffics through a http proxy server, I checked urlib2 and requests packages for instance, they can be configured to use proxies but how could I use something like a system-...
- 860
43
votes
3
answers
36k
views
What's the de facto standard for a Reverse Proxy to tell the backend SSL is used?
I have a reverse proxy that does HTTPS on the outside, but HTTP on the inside.
This means that by default in-app URLs will have HTTP as the scheme, as this is the way it's being contacted.
How can ...
- 6,308
42
votes
4
answers
44k
views
Nginx reverse proxy to Heroku fails SSL handshake
I'm unfortunately not much of a system administrator and have come upon a problem that has me banging my head against the wall.
The short story is that I'm running Nginx on EC2 (Ubuntu 14.04.4 LTS) ...
- 1,381
41
votes
4
answers
123k
views
Nginx does redirect, not proxy
I want to set up Nginx as a reverse proxy for a https service, because we have a special usecase where we need to "un-https" a connection:
http://nginx_server:8080/myserver ==> https://...
- 6,480
40
votes
8
answers
66k
views
Spring Boot with embedded Tomcat behind Apache proxy
We have a Spring Boot (Spring MVC) app with embedded Tomcat on a dedicated appserver behind an Apache SSL proxy.
The SSL port on the proxy server is 4433, forwarding to port 8080 on the appserver.
So ...
- 3,409
39
votes
2
answers
27k
views
When using proxy_pass, can /etc/hosts be used to resolve domain names instead of "resolver"?
Can /etc/hosts be used instead of resolver when using proxy_pass?
I need to perform a proxy_pass to the same nginx machine. Is there a way to resolve the domains using the machine's /etc/hosts file ...
- 1,751
37
votes
2
answers
67k
views
NGINX - Reverse proxy multiple API on different ports
I have the following API(s):
localhost:300/api/customers/
localhost:400/api/customers/:id/billing
localhost:500/api/orders
I'd like to use NGINX to have them all run under the following location:
...
- 6,423
36
votes
2
answers
58k
views
Nginx reverse proxy error:14077438:SSL SSL_do_handshake() failed
So i am using following settings to create one reverse proxy for site as below.
server {
listen 80;
server_name mysite.com;
access_log /var/log/nginx/access.log;
error_log /...
- 1,489
35
votes
7
answers
21k
views
Can nginx be used as a reverse proxy for a backend websocket server?
We're working on a Ruby on Rails app that needs to take advantage of html5 websockets. At the moment, we have two separate "servers" so to speak: our main app running on nginx+passenger, and a ...
- 1,790
34
votes
9
answers
57k
views
Why does Jenkins complain that my reverse proxy setup is broken?
I have no idea why after Jenkins is updated to version 1.591 (Ubuntu Server 12.04), the originally correctly set up reverse proxy now becomes broken. My current setting is exactly the same as said in ...
- 433
34
votes
3
answers
113k
views
How to use NGINX as forward proxy for any requested location?
I am trying to configure NGINX as a forward proxy to replace Fiddler which we are using as a forward proxy. The feature of Fiddler that we use allows us to proxy ALL incoming request to a 8888 port. ...
- 1,799
34
votes
5
answers
18k
views
How to log real client ip in rails log when behind proxy like nginx
Problem
I have a rails 3.2.15 with rack 1.4.5 setup on two servers. First server is a nginx proxy serving static assets. Second server is a unicorn serving the rails app.
In Rails production.log I ...
- 7,181
31
votes
6
answers
12k
views
Cognito - Client is not enabled for OAuth2.0 flows
I've successfully set up an AWS Cognito environment that runs on Localhost following this tutorial.
For the next step, I published the app to my external web server. I confirmed that the Cognito ...
- 1,000
31
votes
5
answers
44k
views
Avoid nginx decoding query parameters on proxy_pass (equivalent to AllowEncodedSlashes NoDecode)
I use nginx as a load balencer in front of several tomcats. In my incoming requests, I have encoded query parameters. But when the request arrives to tomcat, parameters are decoded :
incoming request ...
- 2,657
31
votes
1
answer
30k
views
The simplest possible reverse proxy [closed]
I'm looking for a way to simply set up a proxy locally that connects to a remote site. I don't want to install anything in the system proper. If I could call it with a single command-line call rather ...
- 7,838
29
votes
1
answer
23k
views
nginx proxy pass Node, SSL?
my nginx server is actually proxying my node backend (which listens on port 3000) with a simple:
location /api/ {
proxy_pass http://upstream_1;
}
Where upstream_1 is my node cluster defined in nginx....
- 1,181
28
votes
5
answers
52k
views
nginx as cache proxy not caching anything
I'm trying to cache static content which are basically inside the paths below in virtual server configuration. For some reason files are not being cached. I see several folders and files inside the ...
- 5,222
27
votes
8
answers
27k
views
Is there any way to configure nginx (or other quick reverse proxy) dynamically?
Suppose we have several identical nodes which are the application servers of some n-tier service. And suppose we use Apache ZooKeeper to keep all the config's of our distributed application. Plus we ...
- 547
26
votes
4
answers
22k
views
How to read response body of ReverseProxy
package main
import (
"net/http"
"net/http/httputil"
"net/url"
)
func main() {
target := &url.URL{Scheme: "http", Host: "www.google.com"}
proxy := httputil....
- 18.9k
26
votes
4
answers
58k
views
Intercepting backend 301/302 redirects (proxy_pass) and rewriting to another location block possible?
We have a couple of backends sitting behind our nginx front ends.
Is it possible to intercept 301 / 302 redirects sent by these backends and have nginx handle them?
We were thinging something alone ...
- 14.8k
26
votes
1
answer
22k
views
nginx 'invalid number of arguments in "map" directive'
I'm trying to reverse-proxy a websocket, which I've done with nginx before with no issue. Weirdly, I can't seem to re-create my prior success with something so simple. I've been over and over the ...
- 3,375
26
votes
1
answer
70k
views
nginx reverse proxy to backend running on localhost
EDIT: It turns out that the my setup below actually works. Previously, I was getting redirections to port 36000 but it was due to some configuration settings on my backend application that was causing ...
- 3,517
25
votes
10
answers
45k
views
Laravel routes behind reverse proxy
Ok, so for development purposes, we have a dedicated web server. It's not currently connected directly to the internet, so I've setup an apache reverse proxy on another server, which forwards to the ...
- 9,187
25
votes
5
answers
29k
views
How do I use Rack::Proxy within Rails to proxy requests to a specific path to another app
I found this great blog post on how to use Rack::Proxy as a separate proxy app. The article explains how he uses Rack::Proxy to proxy requests to http://localhost:3000 to an app on port 3001 and ...
- 9,378
25
votes
2
answers
10k
views
nginx 1.2.0 - socket.io - HTTP/1.1 - Proxy websocket connections
i would like to replace my node-http-proxy module with nginx proxy_pass module. Is it possible with new released nginx version, as i have read, that it supports HTTP/1.1 out of the box. I saw some ...
- 1,340
25
votes
3
answers
122k
views
Nginx proxy_pass to https
we have:
Ubuntu 16.04
nginx 1.10.3
i am new to nginx and need help on proxy_pass to https.
We have clients in internet they call a url for example.
https://testapp.mobios.example.com
i want to pass ...
- 383
25
votes
2
answers
37k
views
Code to get a Java servlet to act as a proxy?
I have two Java web applications that have a single servlet that gets mapped to a specific URL:
red.war/
WEB-INF/classes
com.me.myorg.red.RedServlet (maps to http://red.example.com/...
- 56.3k
24
votes
4
answers
38k
views
proxy_pass isn't working when SELinux is enabled, why?
I'm having an application listening on port 8081 and Nginx running on port 8080. The proxy pass statement looks like:
$ cat /var/etc/opt/lj/output/services/abc.servicemanager.conf
location /api/abc....
24
votes
4
answers
52k
views
How to properly set JSESSIONID cookie path behind reverse proxy
My web app is running in Tomcat at http://localhost:8080/example.com/ but it is being reverse proxied from Apache that is serving up http://example.com/ on port 80. My web app looks at the request....
- 24.7k
24
votes
1
answer
36k
views
Nested locations in nginx
Hi I'm trying to get the following to work!
I'm basically trying to allow the following URLs to be passed to the proxy_pass directive by either of these two URLS:
http://example.com/admin/1 or http:/...
- 1,005
24
votes
2
answers
16k
views
What does HTTP/2 mean for a reverse proxy server?
How HTTP/2 affects the implementation of a proxy server? Especially, for example, when a client sends an HTTP/2 request to a content server that only supports HTTP/1.x, should the proxy server ...
- 1,615