Connection Time Out: Private_Pub + SSL + Nginx - ruby-on-rails

Question

I have implemented Private_Pub with SSL and I am running that over port 4443 as recommended in: https://github.com/ryanb/private_pub#serving-faye-over-https-with-thin
However, whenever I actually use the private_pub service I receive the following error:
Errno::ETIMEDOUT: Connection timed out - connect(2) for "www.mysite.com" port 4443
The really odd thing is that it was working on another server before we migrated providers.
I have ensured port 4443 is open by telnet-ing to it successfully. I have played around with the nginx config without any luck. I have restarted the thin server several times just to see if I get lucky.
I am able to access: https://www.mysite.com:4443/faye/faye.js
Can anybody point me in the right direction here?
Edit: Added my nginx config file:
worker_processes 1;
error_log /var/log/nginx.log debug;
events {
worker_connections 1024;
}
http {
passenger_root /home/me/.rvm/gems/ruby-2.1.2/gems/passenger-4.0.52;
passenger_ruby /home/me/.rvm/gems/ruby-2.1.2/wrappers/ruby;
passenger_app_env production;
include mime.types;
default_type application/octet-stream;
sendfile on;
keepalive_timeout 65;
server {
listen 80;
root /var/www/mysite/current/public;
rails_env production;
passenger_enabled on;
}
server {
listen 443;
root /var/www/mysite/current/public;
rails_env production;
proxy_read_timeout 1200;
client_max_body_size 20m;
error_log /var/log/nginx.log debug;
ssl on;
ssl_certificate /var/server.crt;
ssl_certificate_key /var/server.key;
proxy_set_header X-Forwarded-Proto: https;
passenger_pass_header X-Forwarded-Proto;
passenger_enabled on;
# Tried it also without this part to no avail
location /faye {
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_redirect off;
root /var/applications/current/faye;
proxy_pass http://127.0.0.1:4443;
break;
}
}
server {
listen 80;
listen 443;
server_name www.mysite.co mysite.co;
return 302 $scheme://www.mysite.com$request_uri;
}
}