The issue is when i use nginx the socket is not establishing.Any one help me in steps to follow to integrate Socket oi with nginx.
i tried this
location /field {
# the following is required for WebSockets
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $http_host;
proxy_set_header X-NginX-Proxy true;
# supposedly prevents 502 bad gateway error;
# ultimately not necessary in my case
proxy_buffers 8 32k;
proxy_buffer_size 64k;
# the following is required
proxy_pass
proxy_redirect off;
# the following is required as well for WebSockets
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
tcp_nodelay on; # not necessary
}
First of all check your nginx version. According to that page websockets supported after v1.3.13;
http://nginx.com/blog/nginx-nodejs-websockets-socketio/
Then compare your nginx conf with the below configuration as stated in the nginx blog;
map $http_upgrade $connection_upgrade {
default upgrade;
'' close;
}
upstream websocket {
server 192.168.100.10:8010;
}
server {
listen 8020;
location / {
proxy_pass http://websocket;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection $connection_upgrade;
}
}
http://nginx.com/blog/websocket-nginx/
Also check your firewall configuration for the port you chose for socket.io server. (I've read that some ISPs are blocking websocket connection for ports other than 80 & 443, please also check if server receive packets using tcpdump etc.)
If everyhing is okay up until now, check your nginx error logs (/var/log/nginx/error.log) to see if there are any socket.io related error messages. You can paste it here for further analysis.
Then if there is no socket error in nginx logs start your node app with DEBUG mode on as below;
DEBUG=* node yourfile.js
And check if any socket connection message is printed to console. You can also paste it for further analysis.
Related
I'm using Node server with an express app which handles a Server Sent Events stream. This is proxied via NginX with http2 enabled. The SSE events are consumed via EventSource in a React app. I'm sending a heartbeat message every 10 seconds to keep the connection alive.
This all works great until there is some form of network interruption such as putting my laptop to sleep then re-awaking it.
Then from that point on the stream will error every 40 or so seconds with the net::ERR_HTTP2_PROTOCOL_ERROR 200 error and then reconnect instead of just reconnecting once with a steady stream.
Firefox works correctly. It doesn't error and reconnects only once.
If I configure Node to serve http2 directly instead of via NGinx as a test (via spdy library) then all works as expected so I don't think this is a Node issue and I must be missing something with my Nginx configuration and Chrome.
Nginx config as follows (location /stream is the SSE proxy)
server {
listen 28443 ssl http2;
listen [::]:28443 ssl http2;
server_name example.com;
ssl on;
ssl_certificate /etc/letsencrypt/live/example.com/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/example.com/privkey.pem;
http2_max_field_size 16k;
http2_max_header_size 128k;
root /var/www/example.com;
index index.html index.htm;
location / {
client_max_body_size 100M;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $remote_addr;
proxy_pass http://localhost:28080;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection 'Upgrade';
proxy_set_header Host $host;
proxy_cache_bypass $http_upgrade;
}
location /stream {
proxy_http_version 1.1;
# proxy_request_buffering off;
# proxy_buffering off;
# proxy_cache off;
# chunked_transfer_encoding off;
proxy_set_header Connection '';
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_pass http://localhost:28080/stream;
}
}
I've tried various combinations with proxy_buffers off and keepalive settings ect.. which seems to only affect the time between errors i.e. 5 minutes instead of 40 seconds.
Not sure if you figure this out. I got the same issue recently, by increasing the size:
http2_max_field_size 64k;
http2_max_header_size 512k;
The chrome's net::ERR_HTTP2_PROTOCOL_ERROR has gone.
Also, not sure if it applied to you. If I use firefox, I can actually visit my site correctly.
http2_max_field_size and http2_max_header_size directives are obsolete since version 1.19.7
Instead, something like the following could be used:
large_client_header_buffers 4 64k;
Now token is named
In my environment just set to:
large_client_header_buffers 10 512k;
And error is gone
Source:
http://nginx.org/en/docs/http/ngx_http_core_module.html#large_client_header_buffers
I have 2 server:
Server 1 is for loading balance with Nginx - https://server1.herokuapp.com/
Server 2 is for acting RESTful APIs. - https://server2.herokuapp.com/
Here my configuration of nginx.conf.erb at Server 1: https://gist.github.com/ntvinh11586/5b6fde3e804482aa400f3f7faca3d65f
When I try call https://server1.herokuapp.com/, instead of return data from https://server2.herokuapp.com/, I reach a 400 - Bad request. I don't know somewhere in my nginx.conf.erb wrong or I need implement nginx in server 2.
Try to research some resources but I found almost these tutorials configuring in localhost instead of specific hosts like heroku.
So what should I do to make my work successfully?
You need to configure your app as follows -
#upstream nodebeats {
# server server2.herokuapp.com;
# }
server {
listen <%= ENV['PORT'] %>;
server_name herokuapp.com;
root "/app/";
large_client_header_buffers 4 32k;
location / {
proxy_redirect off;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header Host $http_host;
proxy_set_header X-NginX-Proxy true;
proxy_set_header Connection "";
proxy_http_version 1.1;
proxy_pass http://localhost:<node-app-port>;
}
My two cents.
Comment out the upstream. Work with a single server server1.herokuapp.com, get it working with the above implementation, and then you can accomplish on adding the server2.hreokuapp.com to load balance.
I want to setup nginx server listening on one port, proxying the connection to a different port to a nodejs application. The problem is that I get 500 error - worker_connections are not enough while connecting to upstream.
Nginx config:
upstream node {
server 127.0.0.1:1235;
keepalive 8;
}
server {
listen 1234;
server_name http://123.123.123.123:1234 node;
access_log off;
location / {
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $http_host;
proxy_set_header X-NginX-Proxy true;
proxy_pass http://123.123.123.123:1234/;
proxy_redirect off;
}
}
What's wrong?
You should correct your proxy_pass since you are proxying requests back to nginx itself.
According to your config it must be
proxy_pass http://node/;
You may need to add:
proxy_responses 0;
to you nginx config.
i’m new to the javascript world and im trying to publish online a small react app that i‘ve done for tests.
So, first i installed nodejs in my server that already has nginx. Then expressjs, configure it and made a nginx .conf file that uses proxy_reverse to access port 8080 (chosen for nodejs). When i access the server name of that .conf file, without the port, the page it’s shown correctly.
The problem is, if i access another server name configured in my server and add the 8080 port at the end, nginx shows me my nodejs app, even with a server name different from the one configured in proxy_reverse.
Is there any way to limit access to that specific port to one specific server name and return a error everywhere else?
My nginx conf file:
server {
listen 80;
server_name react.mydomain.com;
access_log /var/log/nginx/react.access.log;
error_log /var/log/nginx/react.error.log error;
location / {
proxy_pass https://localhost:8080;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $http_host;
proxy_set_header X-NginX-Proxy true;
# Enables WS support
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
proxy_redirect off;
}
}
Thanks
I am running node.js and socket.io on EC2, using nginx v1.4.1
Here is my /etc/nginx/sites-available/default
map $http_upgrade $connection_upgrade {
default upgrade;
'' close;
}
server {
listen 80;
server_name mysite.com;
location / {
proxy_pass http://localhost:4321;
proxy_set_header Host $http_host;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection $connection_upgrade;
}
}
However I get
WebSocket connection to 'ws://mysite.com/socket.io/1/websocket/nS7f2eI5jAZ-pIN_8fai' failed: Unexpected response code: 502
and from node:
debug - setting request GET /socket.io/1/websocket/nS7f2eI5jAZ-pIN_8fai
debug - set heartbeat interval for client nS7f2eI5jAZ-pIN_8fai
warn - websocket connection invalid
Then it switches to xhr-polling.
I have followed exactly how so many online guides say about Nginx + websocket, but I don't know where I made a mistake.
As per the Nginx documentation, you can try the following in your nginx config file.
location /wsapp/ {
proxy_pass http://your-host:your-port/;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "Upgrade";
proxy_set_header Host $host;
}