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Websockets behind AWS ELB

Nginx

See Configuring NGINX to accept the PROXY Protocol - NGINX

upstream wsserver {
    server 127.0.0.1:9000;
}

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AWS ELB with Node.js and WebSockets

This assumes that:

• You are using Nginx.
• You want to accept incoming connections on port 80.
• Your Node.js app is listening on port 3000.
• You want to be able to connect to your Node.js instance directly as well as via the load balancer.

####1. Create load balancer

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<?php

date_default_timezone_set('UTC');

function out($msg) {
    $now = date('Y-m-d H:i:s');

    echo "[{$now}] {$msg}\n";
}