Behind a reverse proxy

You will find below the configuration needed for deploying a Socket.IO server behind a reverse-proxy solution, such as:

In a multi-server setup, please check the documentation here.

NginX

Content of /etc/nginx/nginx.conf:

  1. http {
    server {
    listen 80;
    server_name example.com;

    location / {
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $host;

    proxy_pass http://localhost:3000;

    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "upgrade";
    }
    }
    }

Related:

Apache HTTPD

Content of /usr/local/apache2/conf/httpd.conf:

  1. Listen 80

    ServerName example.com

    LoadModule mpm_event_module modules/mod_mpm_event.so

    LoadModule authn_file_module modules/mod_authn_file.so
    LoadModule authn_core_module modules/mod_authn_core.so
    LoadModule authz_host_module modules/mod_authz_host.so
    LoadModule authz_groupfile_module modules/mod_authz_groupfile.so
    LoadModule authz_user_module modules/mod_authz_user.so
    LoadModule authz_core_module modules/mod_authz_core.so

    LoadModule headers_module modules/mod_headers.so
    LoadModule lbmethod_byrequests_module modules/mod_lbmethod_byrequests.so
    LoadModule proxy_module modules/mod_proxy.so
    LoadModule proxy_balancer_module modules/mod_proxy_balancer.so
    LoadModule proxy_http_module modules/mod_proxy_http.so
    LoadModule proxy_wstunnel_module modules/mod_proxy_wstunnel.so
    LoadModule rewrite_module modules/mod_rewrite.so
    LoadModule slotmem_shm_module modules/mod_slotmem_shm.so
    LoadModule unixd_module modules/mod_unixd.so

    User daemon
    Group daemon

    ProxyPass / http://localhost:3000/
    RewriteEngine on
    RewriteCond %{HTTP:Upgrade} websocket [NC]
    RewriteCond %{HTTP:Connection} upgrade [NC]
    RewriteRule ^/?(.*) "ws://localhost:3000/$1" [P,L]

    ProxyTimeout 3

Related:

Node.js http-proxy

Installation: npm i http-proxy

  1. const httpProxy = require("http-proxy");

    httpProxy
    .createProxyServer({
    target: "http://localhost:3000",
    ws: true,
    })
    .listen(80);

Documentation

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